#include "stm32f10x.h"
#include "stm32_eval.h"
#include
#define VREF 3.3
unsigned char i=0;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
void delay_us(u32 n)
{
u8 j;
while(n--)
for(j=0;j<10;j++);
}
void delay_ms(u32 n)
{
while(n--)
delay_us(1000);
}
void RCC_Configuration(void)
{
RCC_DeInit();
RCC_HSICmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_HSEConfig(RCC_HSE_OFF);
RCC_LSEConfig(RCC_LSE_OFF);
RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
RCC_PCLK2Config(RCC_HCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource() != 0x08);
//SystemInit();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_ResetBits(GPIOD,GPIO_Pin_2);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
}
void USART_int(long BaudRate)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PA10 USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* USARTx configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = BaudRate;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;e
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
void GPIO_INIT()
{
RCC_Configuration();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
void Iic1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);
//PB6-I2C2_SCL PB7-I2C2_SDA PB10-I2C2_SCL PB11-I2C2_SDA
/* Configure IO connected to IIC*********************/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0xA0;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = 400000;
I2C_Cmd(I2C2, ENABLE);
I2C_Init(I2C2, &I2C_InitStructure);
I2C_AcknowledgeConfig(I2C2, ENABLE);
}
/**********************************************************************/
/*IIC????? */
/* */
/**********************************************************************/
void I2C2_WriteByte(unsigned char id,unsigned char write_address,unsigned char byte)
{
while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C2,ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2,id,I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C2, write_address);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C2, byte);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C2, ENABLE);
do
{
/* Send START condition */
I2C_GenerateSTART(I2C2, ENABLE);
/* Read I2C2 SR1 register */
/* Send EEPROM address for write */
I2C_Send7bitAddress(I2C2, 0xA0, I2C_Direction_Transmitter);
}while(!(I2C_ReadRegister(I2C2, I2C_Register_SR1) & 0x0002));
/* Clear AF flag */
I2C_ClearFlag(I2C2, I2C_FLAG_AF);
/* STOP condition */
I2C_GenerateSTOP(I2C2, ENABLE);
}
unsigned char I2C2_ReadByte(unsigned char id, unsigned char read_address)
{
unsigned char temp;
while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY)){}
I2C_GenerateSTART(I2C2, ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2, id, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_Cmd(I2C2, ENABLE);
I2C_SendData(I2C2, read_address);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTART(I2C2, ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2, id, I2C_Direction_Receiver);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
I2C_AcknowledgeConfig(I2C2, DISABLE);
I2C_GenerateSTOP(I2C2, ENABLE);
while(!(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED)));
temp = I2C_ReceiveData(I2C2);
I2C_AcknowledgeConfig(I2C2, ENABLE);
return temp;
}
void EXTIkeyS1_Config(void)
{
/* Enable GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* Configure PA.00 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8);
EXTI_InitStructure.EXTI_Line = EXTI_Line8;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTI9_5_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
i=0;
I2C2_WriteByte(0xA0,0,0);
printf("上电清0\r\n",i);
/* Clear the EXTI line 8 pending bit */
EXTI_ClearITPendingBit(EXTI_Line8);
}
}
void IIC_TEST()
{
printf(" config done...\r\n");
i = I2C2_ReadByte(0xA0,0);
i++;
printf("从地址读出数据:%d\r\n",i);
I2C2_WriteByte(0xA0,0,i);
printf("向地址输入数据:%d\r\n",i);
printf("上电次数%d\r\n",i);
}
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System Clocks Configuration */
RCC_Configuration();
EXTIkeyS1_Config();
GPIO_INIT();
USART_int(115200);
Iic1_Init();
IIC_TEST();
}
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line)
{
while (1)
{
}
}
#endif
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
PUTCHAR_PROTOTYPE
{
USART_SendData(EVAL_COM1, (uint8_t) ch);
while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
{}
return ch;
}
#include "stm32f10x.h"
#include "stm32_eval.h"
#include
#define VREF 3.3
unsigned char i=0;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
void delay_us(u32 n)
{
u8 j;
while(n--)
for(j=0;j<10;j++);
}
void delay_ms(u32 n)
{
while(n--)
delay_us(1000);
}
void RCC_Configuration(void)
{
RCC_DeInit();
RCC_HSICmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_HSEConfig(RCC_HSE_OFF);
RCC_LSEConfig(RCC_LSE_OFF);
RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
RCC_PCLK2Config(RCC_HCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource() != 0x08);
//SystemInit();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_ResetBits(GPIOD,GPIO_Pin_2);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
}
void USART_int(long BaudRate)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PA10 USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* USARTx configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = BaudRate;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;e
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
void GPIO_INIT()
{
RCC_Configuration();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
void Iic1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);
//PB6-I2C2_SCL PB7-I2C2_SDA PB10-I2C2_SCL PB11-I2C2_SDA
/* Configure IO connected to IIC*********************/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0xA0;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = 400000;
I2C_Cmd(I2C2, ENABLE);
I2C_Init(I2C2, &I2C_InitStructure);
I2C_AcknowledgeConfig(I2C2, ENABLE);
}
/**********************************************************************/
/*IIC????? */
/* */
/**********************************************************************/
void I2C2_WriteByte(unsigned char id,unsigned char write_address,unsigned char byte)
{
while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C2,ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2,id,I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C2, write_address);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C2, byte);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C2, ENABLE);
do
{
/* Send START condition */
I2C_GenerateSTART(I2C2, ENABLE);
/* Read I2C2 SR1 register */
/* Send EEPROM address for write */
I2C_Send7bitAddress(I2C2, 0xA0, I2C_Direction_Transmitter);
}while(!(I2C_ReadRegister(I2C2, I2C_Register_SR1) & 0x0002));
/* Clear AF flag */
I2C_ClearFlag(I2C2, I2C_FLAG_AF);
/* STOP condition */
I2C_GenerateSTOP(I2C2, ENABLE);
}
unsigned char I2C2_ReadByte(unsigned char id, unsigned char read_address)
{
unsigned char temp;
while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY)){}
I2C_GenerateSTART(I2C2, ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2, id, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_Cmd(I2C2, ENABLE);
I2C_SendData(I2C2, read_address);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTART(I2C2, ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2, id, I2C_Direction_Receiver);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
I2C_AcknowledgeConfig(I2C2, DISABLE);
I2C_GenerateSTOP(I2C2, ENABLE);
while(!(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED)));
temp = I2C_ReceiveData(I2C2);
I2C_AcknowledgeConfig(I2C2, ENABLE);
return temp;
}
void EXTIkeyS1_Config(void)
{
/* Enable GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* Configure PA.00 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8);
EXTI_InitStructure.EXTI_Line = EXTI_Line8;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTI9_5_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
i=0;
I2C2_WriteByte(0xA0,0,0);
printf("上电清0\r\n",i);
/* Clear the EXTI line 8 pending bit */
EXTI_ClearITPendingBit(EXTI_Line8);
}
}
void IIC_TEST()
{
printf(" config done...\r\n");
i = I2C2_ReadByte(0xA0,0);
i++;
printf("从地址读出数据:%d\r\n",i);
I2C2_WriteByte(0xA0,0,i);
printf("向地址输入数据:%d\r\n",i);
printf("上电次数%d\r\n",i);
}
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System Clocks Configuration */
RCC_Configuration();
EXTIkeyS1_Config();
GPIO_INIT();
USART_int(115200);
Iic1_Init();
IIC_TEST();
}
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line)
{
while (1)
{
}
}
#endif
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
PUTCHAR_PROTOTYPE
{
USART_SendData(EVAL_COM1, (uint8_t) ch);
while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
{}
return ch;
}
#include "stm32f10x.h"
#include "stm32_eval.h"
#include
#define VREF 3.3
unsigned char i=0;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
void delay_us(u32 n)
{
u8 j;
while(n--)
for(j=0;j<10;j++);
}
void delay_ms(u32 n)
{
while(n--)
delay_us(1000);
}
void RCC_Configuration(void)
{
RCC_DeInit();
RCC_HSICmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_HSEConfig(RCC_HSE_OFF);
RCC_LSEConfig(RCC_LSE_OFF);
RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
RCC_PCLK2Config(RCC_HCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource() != 0x08);
//SystemInit();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_ResetBits(GPIOD,GPIO_Pin_2);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
}
void USART_int(long BaudRate)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PA10 USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* USARTx configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = BaudRate;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;e
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
void GPIO_INIT()
{
RCC_Configuration();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
void Iic1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);
//PB6-I2C2_SCL PB7-I2C2_SDA PB10-I2C2_SCL PB11-I2C2_SDA
/* Configure IO connected to IIC*********************/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0xA0;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = 400000;
I2C_Cmd(I2C2, ENABLE);
I2C_Init(I2C2, &I2C_InitStructure);
I2C_AcknowledgeConfig(I2C2, ENABLE);
}
/**********************************************************************/
/*IIC????? */
/* */
/**********************************************************************/
void I2C2_WriteByte(unsigned char id,unsigned char write_address,unsigned char byte)
{
while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C2,ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2,id,I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C2, write_address);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C2, byte);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C2, ENABLE);
do
{
/* Send START condition */
I2C_GenerateSTART(I2C2, ENABLE);
/* Read I2C2 SR1 register */
/* Send EEPROM address for write */
I2C_Send7bitAddress(I2C2, 0xA0, I2C_Direction_Transmitter);
}while(!(I2C_ReadRegister(I2C2, I2C_Register_SR1) & 0x0002));
/* Clear AF flag */
I2C_ClearFlag(I2C2, I2C_FLAG_AF);
/* STOP condition */
I2C_GenerateSTOP(I2C2, ENABLE);
}
unsigned char I2C2_ReadByte(unsigned char id, unsigned char read_address)
{
unsigned char temp;
while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY)){}
I2C_GenerateSTART(I2C2, ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2, id, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_Cmd(I2C2, ENABLE);
I2C_SendData(I2C2, read_address);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTART(I2C2, ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2, id, I2C_Direction_Receiver);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
I2C_AcknowledgeConfig(I2C2, DISABLE);
I2C_GenerateSTOP(I2C2, ENABLE);
while(!(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED)));
temp = I2C_ReceiveData(I2C2);
I2C_AcknowledgeConfig(I2C2, ENABLE);
return temp;
}
void EXTIkeyS1_Config(void)
{
/* Enable GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* Configure PA.00 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8);
EXTI_InitStructure.EXTI_Line = EXTI_Line8;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTI9_5_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
i=0;
I2C2_WriteByte(0xA0,0,0);
printf("上电清0\r\n",i);
/* Clear the EXTI line 8 pending bit */
EXTI_ClearITPendingBit(EXTI_Line8);
}
}
void IIC_TEST()
{
printf(" config done...\r\n");
i = I2C2_ReadByte(0xA0,0);
i++;
printf("从地址读出数据:%d\r\n",i);
I2C2_WriteByte(0xA0,0,i);
printf("向地址输入数据:%d\r\n",i);
printf("上电次数%d\r\n",i);
}
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System Clocks Configuration */
RCC_Configuration();
EXTIkeyS1_Config();
GPIO_INIT();
USART_int(115200);
Iic1_Init();
IIC_TEST();
}
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line)
{
while (1)
{
}
}
#endif
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
PUTCHAR_PROTOTYPE
{
USART_SendData(EVAL_COM1, (uint8_t) ch);
while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
{}
return ch;
}
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/**
******************************************************************************
* @file EXTI/EXTI_Config/main.c
* @author MCD Application Team
* @version V3.5.0
* @date 08-April-2011
* @brief Main program body
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
*
© COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_eval.h"
#include "delay.h"
#include
volatile int flag;
#define Set_B20() GPIO_SetBits(GPIOC, GPIO_Pin_12) //上拉关闭PC12
#define Reset_B20() GPIO_ResetBits(GPIOC, GPIO_Pin_12) //下拉打开PC12
#define Read_B20() GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_12) //读PC12状态
unsigned char Error_Flag=0;
unsigned char zf=0;
void SysTick_Configuration(void)
{
/* Setup SysTick Timer for 10 msec interrupts */
if (SysTick_Config(48000)) //SysTick配置
{
/* Capture error */
while (1);
}
/* Configure the SysTick handler priority */
NVIC_SetPriority(SysTick_IRQn, 0x0); //SysTick中断优先级
}
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup EXTI_Config
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
void RCC_Configuration(void)
{
RCC_DeInit(); //将外设RCC重新设为缺省值
RCC_HSICmd(ENABLE); //使能内部高速晶振
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET); //当SHI晶振就绪则重新设定
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI); //设置系统时钟，选择SHI时钟为系统时钟
RCC_HSEConfig(RCC_HSE_OFF); //设置外部高速晶振，HSE晶振OFF
RCC_LSEConfig(RCC_LSE_OFF); //设置外部低速晶振，LSE晶振OFF
//******配置PLL时钟频率为48MHZ*******//
RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_8); //RCC_PLLMul_x 即设置PLL时钟频率为 6*x MHz
//************************************//
RCC_PLLCmd(ENABLE); ////*******************使能PLL
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET); //PLL就绪
RCC_ADCCLKConfig(RCC_PCLK2_Div4); // ADC时钟=PCLK/2
RCC_PCLK2Config(RCC_HCLK_Div1); // APB2时钟=HCLK
RCC_PCLK1Config(RCC_HCLK_Div2); /// APB1时钟=HCLK/2
RCC_HCLKConfig(RCC_SYSCLK_Div1); // AHB时钟=系统时钟
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); // 选择PLL为系统时钟
while(RCC_GetSYSCLKSource() != 0x08); //当PLL不是系统时钟
// SystemInit();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); //使能APB2外设时钟/****GPIOD时钟和功能复用IO时钟***/
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG SW_DP使能
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; // //选择设置GPIO管脚
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; ////设置管脚速率
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; ////设置管脚工作状态，此为推挽输出
GPIO_Init(GPIOD, &GPIO_InitStructure); //初始化GPIOD
GPIO_ResetBits(GPIOD,GPIO_Pin_2); //上拉关闭蜂鸣器
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;//LED
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //使能TIM2时钟
}
void USART_int(long BaudRate)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);//使能GPIOA、USART1外设时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PA10 USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* USARTx configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = BaudRate;//设置USART传输波特率 BaudRate = 9600 可以直接写9600
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//一帧传输或者接收的数据位数为8bit
USART_InitStructure.USART_StopBits = USART_StopBits_1;//在帧结尾传输一个停止位
USART_InitStructure.USART_Parity = USART_Parity_No;//奇偶模式失能
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//硬件流控制失能
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//使能接收发模式
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; //时钟低电平活动
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; //引脚时钟输出低电平时钟
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; //第二个时钟边沿开始捕获数据
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;//最后一位数据的时钟脉冲不从SCLK输出
USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_Init(USART1, &USART_InitStructure);//USART1初始化
USART_Cmd(USART1, ENABLE);//使能USART1时钟外设
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//使能接受中断
USART_Cmd(USART1, ENABLE);
}
void delay_18b20(u32 nus) //18b20按照严格的时序工作，这是专属延时
{
u16 i;
while(nus--)
for(i=12;i>0;i--);
}
void Init18B20(void) //18B20初始化
{
u8 aa=0;
u8 count =0;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能PC时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;//开漏输出
GPIO_Init(GPIOC, &GPIO_InitStructure);
Set_B20() ; // GPIO_SetBits(GPIOC, GPIO_Pin_12)
delay_18b20(1);
Reset_B20();
delay_18b20(480);
Set_B20();
// delay_18b20(500);
delay_18b20(480);
count=0;
aa=Read_B20(); //温度读取
/****个人认为限制温度不超过99度，作为一个保护*/
while(!aa && count<100)
{
aa=Read_B20();
count++; //相当一个for（）和while结合
}
if(count>=99)
Error_Flag=1;
else
Error_Flag=0;
}
unsigned char Read18B20(void)//按位读取数据
{
unsigned char i=0;
unsigned char date=0;
u8 tempp;
for(i=8;i>0;i--)
{
Reset_B20(); //打开PC12
date>>=1; //标志右移一位
delay_18b20(1);
Set_B20(); //关闭
delay_18b20(1);
tempp=Read_B20(); //读取温度
if(tempp)
date|=0x80; // 1000 0000 将最高位填1 ，然后右移，每次最高位由0变1，使8位全部传递完毕 0xff = 1111 1111
delay_18b20(60);
}
return(date);
}
void Write18B20(unsigned char date)//写数据
{
unsigned char i=0;
for (i=8; i>0; i--)
{
Reset_B20();
delay_18b20(1);
if(date & 0x01)
{
Set_B20();
}
else
{ Reset_B20();}
delay_18b20(60);
date>>=1;
Set_B20();
delay_18b20(1);
}
delay_18b20(15);
}
float Read_T()//读温度
{
unsigned char TUp,TDown;
unsigned char fTemp;
u8 TT=0;
float Temp = 0;
Init18B20();
Write18B20(0xcc);
Write18B20(0x44);
Init18B20();
Write18B20(0xcc);
Write18B20(0xbe);
TDown = Read18B20();
TUp = Read18B20();
if(TUp>0x7f)
{
TDown=~TDown;
TUp=~TUp+1;
TUp/=8;
zf=1;
}
else
zf=0;
fTemp=TDown&0x0f;
TUp<<=4;
TDown>>=4;
TT=TUp|TDown;
Temp=TT+(float)fTemp/16;
return(Temp);
}
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System Clocks Configuration */
char ID[8];
int i;
RCC_Configuration();
USART_int(115200);
SysTick_Configuration();
printf(" config done...\r\n");
delay_ms(1000);
Init18B20(); //初始化
Write18B20(0x33); //写入读取地址的命令
delay_18b20(20);
for(i=0;i<8;i++) //这里必须用for不然 只会输出printf("event 1 oc......\r\n")这句，不会继续运行
{
ID[i] = Read18B20();//读取地址
}
while(1)
{
if(flag == 300)
{
printf("At the moment of ID is:") ;
for(i=0;i<8;i++) //字符不能直接输出，要按位输出
{
printf("%u",ID[i]);//输出地址
}
printf("\r\n") ;
}
if(flag == 500)
{
printf("The Temperature is:%f\r\n",Read_T());//读取温度并输出
printf("===================================================\r\n");
}
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
#ifdef __GNUC__
/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
set to 'Yes') calls __io_putchar() */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
/**
* @brief Retargets the C library printf function to the USART.
* @param None
* @retval None
*/
PUTCHAR_PROTOTYPE
{
/* Place your implementation of fputc here */
/* e.g. write a character to the USART */
USART_SendData(EVAL_COM1, (uint8_t) ch);
/* Loop until the end of transmission */
while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
{}
return ch;
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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/**
******************************************************************************
* @file EXTI/EXTI_Config/main.c
* @author MCD Application Team
* @version V3.5.0
* @date 08-April-2011
* @brief Main program body
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
*
© COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_eval.h"
#include
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup EXTI_Config
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
/* Private function prototypes -----------------------------------------------*/
void EXTIkeyS1_Config(void);
void EXTIkeyS2_Config(void);
void EXTIkeyS3_Config(void);
void EXTIkeyS4_Config(void);
void RCC_Configuration(void)
{
RCC_DeInit();
RCC_HSICmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_HSEConfig(RCC_HSE_OFF);
RCC_LSEConfig(RCC_LSE_OFF);
RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
RCC_PCLK2Config(RCC_HCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource() != 0x08);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_ResetBits(GPIOD,GPIO_Pin_2);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_ResetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
}
void USART_int(long BaudRate)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PA10 USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* USARTx configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = BaudRate;//??????
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit
USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1
USART_InitStructure.USART_Parity = USART_Parity_No;//????
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//??????????
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
/* Configure four bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; //
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
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void EXTIkeyS1_Config(void)
{
/* Enable GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* Configure PA.00 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/* Connect EXTI0 Line to PA.00 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8);
/* Configure EXTI0 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line8;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI0 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/**
* @brief Configure PB.09 or PG.08 in interrupt mode
* @param None
* @retval None
*/
void EXTIkeyS2_Config(void)
{
/* Enable GPIOB clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* Configure PB.09 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/* Connect EXTI9 Line to PB.09 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource9);
/* Configure EXTI9 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line9;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI9_5 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTIkeyS3_Config(void)
{
/* Enable GPIOB clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* Configure PB.10 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/* Connect EXTI9 Line to PB.10 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource10);
/* Configure EXTI10 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line10;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI15_10 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTIkeyS4_Config(void)
{
/* Enable GPIOB clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* Configure PB.11 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/* Connect EXTI11 Line to PB.11 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource11);
/* Configure EXTI11 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line11;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI15_10 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
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/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
RCC_Configuration();
EXTIkeyS1_Config();
EXTIkeyS2_Config();
EXTIkeyS3_Config();
EXTIkeyS4_Config();
USART_int(115200);
printf(" 请进行中断
\n");
while (1)
{
}
}
/**
* @brief Configure PA.00 in interrupt mode
* @param None
* @retval None
*/
/******************************************************************************/
/* STM32F10x Peripherals Interrupt Handlers */
/******************************************************************************/
/**
* @brief This function handles External lines 9 to 5 interrupt request.
* @param None
* @retval None
*/
void EXTI9_5_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line9) != RESET)
{
GPIO_SetBits(GPIOC,GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
printf("S2键中断
\n");
EXTI_ClearITPendingBit(EXTI_Line9);
}
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);
printf("S1键中断
\n");
EXTI_ClearITPendingBit(EXTI_Line8);
}
}
void EXTI15_10_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line10) != RESET)
{
GPIO_ResetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);
printf("S3键中断
\n");
EXTI_ClearITPendingBit(EXTI_Line10);
}
if(EXTI_GetITStatus(EXTI_Line11) != RESET)
{
GPIO_ResetBits(GPIOC,GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
printf("S4键中断
\n");
EXTI_ClearITPendingBit(EXTI_Line11);
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
#ifdef __GNUC__
/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
set to 'Yes') calls __io_putchar() */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
/**
* @brief Retargets the C library printf function to the USART.
* @param None
* @retval None
*/
PUTCHAR_PROTOTYPE
{
/* Place your implementation of fputc here */
/* e.g. write a character to the USART */
USART_SendData(EVAL_COM1, (uint8_t) ch);
/* Loop until the end of transmission */
while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
{}
return ch;
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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#include "stm32f10x.h"
#include "stm32_eval.h"
#include "stdio.h"
#include "math.h"
#define buff_size 16;
char rx_buff[], rx_buff_count=0;
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
void RCC_Configuration(void)
{
RCC_DeInit();
RCC_HSICmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_HSEConfig(RCC_HSE_OFF);
RCC_LSEConfig(RCC_LSE_OFF);
RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
RCC_PCLK2Config(RCC_HCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource() != 0x08);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_ResetBits(GPIOD,GPIO_Pin_2);//关闭蜂鸣器
}
void GPIO_INIT()
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能PC时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;//PC0-PC7
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//推挽输出
GPIO_Init(GPIOC, &GPIO_InitStructure);//初始化PC
}
void USART_int(long BaudRate)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);//使能PA USART1
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;//TX位于PA9
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //推挽输出
GPIO_Init(GPIOA, &GPIO_InitStructure);//TX初始化 PA9
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//RX位于PA10
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//悬空输入
GPIO_Init(GPIOA, &GPIO_InitStructure);//RX初始化 PA10
/* USARTx configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = BaudRate;//传输速率
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长8比特
USART_InitStructure.USART_StopBits = USART_StopBits_1;//停止位1
USART_InitStructure.USART_Parity = USART_Parity_No;//
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//流控位none
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//接收和发送模式
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1, &USART_ClockInitStructure);//初始化USART1时钟
USART_Init(USART1, &USART_InitStructure);//初始化USART1
USART_Cmd(USART1, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
/* Configure four bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);//优先级
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; //选择USART1中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);//
}
/*delay_us*/
void delay_us(u32 n)
{
u8 j;
while(n--)
for(j=0;j<10;j++);
}
/*delay_ms*/
void delay_ms(u32 n)
{
while(n--)
delay_us(1000);
}
void USART_SendStr(char *str)//
{
while((*str)!='\0')//
{
USART_SendData(USART1,*str++);
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}
}
unsigned int translate(char *S,char j)//
{
unsigned int a[4],sum=0;
char i;
for(i=0;i<j;i++)
{
a[i]=S[5+j-1-i]-48;//将字符转成整型数据
sum+=a[i]*pow(10,i);//按照每一位的权值相乘再相加，还原data=n的本来面貌
}
return sum;//sum保存目标整型数据
}
void func(char *S,char LEN)
{
char count;//
unsigned int sum,i,j,k;
if((LEN!=6)&(LEN!=7)&(LEN!=8)&(LEN!=9))//data=1~999
{USART_SendStr("\r\n Erro input!!!\r\n");}//
else
{
count=LEN-5;//
sum = translate(S,count);//
GPIO_SetBits(GPIOC,0x000000ff);//all LED off
for(k=0;k<3;k++)//
{
i=0x00000100;
for(j=1;j<=8;j++)//LED D8-D1
{
i>>=1;
GPIO_ResetBits(GPIOC,i); // on PC7-PC0 D8-D1
delay_ms(50);
GPIO_SetBits(GPIOC,i);
delay_ms(sum);//
}
}
}
}
void input_ASK()
{
char j;
func(rx_buff,rx_buff_count);
rx_buff_count=0;
for (j=0;j<rx_buff_count;j++)
{rx_buff[j]='\0';}//
USART_SendStr("\n>");
}
int main(void)
{
RCC_Configuration();
GPIO_INIT();
USART_int(9600);
GPIO_ResetBits(GPIOC,0x000000ff);//
delay_ms(200);
GPIO_SetBits(GPIOC,0x000000ff);//l
USART_SendStr("SyStem booting......\r\n");//
USART_SendStr("\n>");//
while(1)
{}
}
void USART1_IRQHandler(void)
{
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)
{ }
if(USART_ReceiveData(USART1)==0x0d)//
{input_ASK();}
else
{
USART_SendData(USART1,USART_ReceiveData(USART1));
rx_buff[rx_buff_count]= USART_ReceiveData(USART1);
rx_buff_count++;
}
USART_ClearFlag(USART1, USART_FLAG_RXNE);
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/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_eval.h"
GPIO_InitTypeDef GPIO_InitStructure;
void RCC_Configuration(void)//始终配置
{
RCC_DeInit();//将RCC寄存器重设为缺省值
RCC_HSICmd(ENABLE);//使能内部高速晶振
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);//HSI晶振返回reset
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);//选择HSI作为系统时钟
RCC_HSEConfig(RCC_HSE_OFF);//HSE晶振关
RCC_LSEConfig(RCC_LSE_OFF);//LSE晶振关
RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz
RCC_PLLCmd(ENABLE);//使能PLL状态
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
RCC_ADCCLKConfig(RCC_PCLK2_Div4);//ADC时钟=PCLK/4
RCC_PCLK2Config(RCC_HCLK_Div1);//APB2时钟=HCLK
RCC_PCLK1Config(RCC_HCLK_Div2);//APB1时钟=HCLK/2
RCC_HCLKConfig(RCC_SYSCLK_Div1);//AHB时钟=系统时钟
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);//选择PLL作为系统时钟
while(RCC_GetSYSCLKSource() != 0x08);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_ResetBits(GPIOD,GPIO_Pin_2);//关闭蜂鸣器
}
void delay_us(u32 n)
{
u8 j;
while(n--)
for(j=0;j<10;j++);
}
void delay_ms(u32 n)
{
while(n--)
delay_us(1000);
}
int main (void)
{
char i=0;
RCC_Configuration();
/*初始化PC*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/*初始化PB*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
while(1){
if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_8)==0)
if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_8))
{
delay_ms(100);if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_8)){i++;}
}
if(i>30){i=0;}
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
switch(i)
{
case 0 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);//0
break;
case 1 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//1
break;
case 2 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//2
break;
case 3 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);//3
break;
case 4 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12);//4
break;
case 5 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_14);//5
break;
case 6 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);//6
break;
case 7 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12);//7
break;
case 8 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);//8
break;
case 9 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);//9
break;
case 10 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//10
break;
case 11 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//11
break;
case 12 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//12
break;
case 13 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//13
case 14 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//14
break;
case 15 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//15
break;
case 16 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//16
break;
case 17 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//17
break;
case 18 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//18
break;
case 19 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);//19
break;
case 20 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//20
break;
case 21 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//21
break;
case 22 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//22
break;
case 23 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//23
case 24 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//24
break;
case 25 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//25
break;
case 26 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//26
break;
case 27 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits (GPIOB,GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits (GPIOB,GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//27
break;
case 28 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//28
break;
case 29 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14);//29
break;
case 30 :
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
delay_ms(100);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);
delay_ms(200);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14);//30
break;
}
}
}
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<pre name="code" class="c">#include "stm32f10x.h"
#include "stm32_eval.h"
#include <stdio.h>
#define VREF 3.3
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
unsigned char i=0;
unsigned char count=0;
void delay_us(u32 n)
{
u8 j;
while(n--)
for(j=0;j<10;j++);
}
/*********************************/
void delay_ms(u32 n)
{
while(n--)
delay_us(1000);
}
int Display[10]={ GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14|GPIO_Pin_13|GPIO_Pin_8,
GPIO_Pin_9|GPIO_Pin_12,
GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_14|GPIO_Pin_13|GPIO_Pin_5,
GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14|GPIO_Pin_5,
GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_8|GPIO_Pin_5,
GPIO_Pin_7|GPIO_Pin_12|GPIO_Pin_14|GPIO_Pin_8|GPIO_Pin_5,
GPIO_Pin_7|GPIO_Pin_12|GPIO_Pin_14|GPIO_Pin_13|GPIO_Pin_8|GPIO_Pin_5,
GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12,
GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14,
GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14 };
void Dis_number(unsigned char i)
{
char one=0,ten=0;
one=i%10; ten=i/10;
GPIO_SetBits(GPIOB,GPIO_Pin_1);
GPIO_ResetBits(GPIOB,Display[one]);
delay_ms(10);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
GPIO_SetBits(GPIOB,GPIO_Pin_15);
GPIO_ResetBits(GPIOB,Display[ten]);
delay_ms(10);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);
GPIO_SetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);
}
void RCC_Configuration(void)
{
RCC_DeInit();
RCC_HSICmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_HSEConfig(RCC_HSE_OFF);
RCC_LSEConfig(RCC_LSE_OFF);
RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); //72HMz
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
RCC_PCLK2Config(RCC_HCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource() != 0x08);
//SystemInit();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_ResetBits(GPIOD,GPIO_Pin_2);//蜂鸣器
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
}
void USART_int(long BaudRate)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PA10 USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = BaudRate;//??????
USART_InitStructure.USART_BaudRate = BaudRate;//usart传输波比特
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//一帧传输或接收8bit
USART_InitStructure.USART_StopBits = USART_StopBits_1;//在帧结尾传输1个停止位
USART_InitStructure.USART_Parity = USART_Parity_No;//奇偶失能
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//硬件流控制失能
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//接收使能，发送使能
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;//时钟低电平活动
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;//始终低电平
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;//时钟第二边缘进行数据捕获
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;//最后一位数据的时钟不从SCLK输出
USART_ClockInit(USART1, &USART_ClockInitStructure);//使能USART1时钟
USART_Init(USART1, &USART_InitStructure);//初始化USART1
USART_Cmd(USART1, ENABLE);//使能USART1外设
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//使能中断
USART_Cmd(USART1, ENABLE);
/* Configure four bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void GPIO_INIT()
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
void Iic1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);
//PB6-I2C2_SCL PB7-I2C2_SDA PB10-I2C2_SCL PB11-I2C2_SDA
/* Configure IO connected to IIC*********************/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;//配置I2C模式
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;//该参数只有在I2C工作在快速模式下有意义
I2C_InitStructure.I2C_OwnAddress1 = 0xA0;//设置第一个设备自身地址
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;//使能应答
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;//地址为7位
I2C_InitStructure.I2C_ClockSpeed = 400000;//时钟速率 400KHZ
I2C_Cmd(I2C2, ENABLE);
I2C_Init(I2C2, &I2C_InitStructure);
I2C_AcknowledgeConfig(I2C2, ENABLE);
}
void I2C2_WriteByte(unsigned char id,unsigned char write_address,unsigned char byte)
{
while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C2,ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2,id,I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C2, write_address);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C2, byte);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C2, ENABLE);
do
{
/* Send START condition */
I2C_GenerateSTART(I2C2, ENABLE);
/* Read I2C2 SR1 register */
/* Send EEPROM address for write */
I2C_Send7bitAddress(I2C2, 0xA0, I2C_Direction_Transmitter);
}while(!(I2C_ReadRegister(I2C2, I2C_Register_SR1) & 0x0002));
/* Clear AF flag */
I2C_ClearFlag(I2C2, I2C_FLAG_AF);
/* STOP condition */
I2C_GenerateSTOP(I2C2, ENABLE);
}
unsigned char I2C2_ReadByte(unsigned char id, unsigned char read_address)
{
unsigned char temp;
while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY)){}
I2C_GenerateSTART(I2C2, ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2, id, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_Cmd(I2C2, ENABLE);
I2C_SendData(I2C2, read_address);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTART(I2C2, ENABLE);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C2, id, I2C_Direction_Receiver);
while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
I2C_AcknowledgeConfig(I2C2, DISABLE);
I2C_GenerateSTOP(I2C2, ENABLE);
while(!(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED)));
temp = I2C_ReceiveData(I2C2);
I2C_AcknowledgeConfig(I2C2, ENABLE);
return temp;
}
void EXTIkeyS1_Config(void)
{
/* Enable GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* Configure PA.00 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/* Connect EXTI0 Line to PA.00 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8);
/* Configure EXTI0 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line8;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI0 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTI9_5_IRQHandler(void) //s1
{
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
i++;
I2C2_WriteByte(0xA0,0,i);
EXTI_ClearITPendingBit(EXTI_Line8);
}
}
int main(void)
{
RCC_Configuration();
USART_int(115200);
GPIO_INIT();
Iic1_Init();
EXTIkeyS1_Config();
printf(" config done...\r\n");
delay_ms(1000);
while(1)
{
count=I2C2_ReadByte(0xA0,0);
Dis_number(count);
}
}
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line)
{
while (1)
{
}
}
#endif
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
PUTCHAR_PROTOTYPE
{
/* Place your implementation of fputc here */
/* e.g. write a character to the USART */
USART_SendData(EVAL_COM1, (uint8_t) ch);
/* Loop until the end of transmission */
while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
{}
return ch;
}
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line)
{
while (1)
{
}
}
#endif
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
</pre>
<p>
</p>
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