【作业这个事儿】
2# 【keil 软件安装破解过程】http://forum.eepw.com.cn/thread/262550/1/#2
3# 【数码管按键切换扫描】http://forum.eepw.com.cn/thread/262550/1/#3
6# 【串口读0-99数据，数码管显示数据读到的0-99数据】http://forum.eepw.com.cn/thread/262550/1/#6
8# 【LED熄灭】http://forum.eepw.com.cn/thread/262550/1/#8
9# 【rgb呼吸灯】http://forum.eepw.com.cn/thread/262550/1/#9
【时钟滴答48MHz&&读取18b20 ID地址】http://forum.eepw.com.cn/thread/262550/1/#10
【 IIC 按键次数存储】http://forum.eepw.com.cn/thread/262550/1/#11
首先坦白因为自己的板子有纰漏，所以代码啊什么的都抱了大神的大腿~ 虽然没有太多自己的原创，仅仅是一个模仿学习和理解的过程啦/** ****************************************************************************** * @file GPIO/IOToggle/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" GPIO_InitTypeDef GPIO_InitStructure; 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); } void GPIO_INIT()//ÊäÈëÊä³öµÄ³õʼ»¯ { GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 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_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); } void delay_us(u32 n) //ÑÓʱ1us { u8 j; while(n--) for(j=0;j<10;j++); } void delay_ms(u32 n) //ÑÓʱ1ms { while(n--) delay_us(1000); } //¶¨ÒåÒ»¸öÊý×飬ÓÃÀ´ÏÔʾÊý×Ö0µ½9 int table[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 shumaguan(char temp) { char gewei=0,shiwei=0; shiwei=temp/10; gewei=temp%10; if(temp<10) { GPIO_SetBits(GPIOB,GPIO_Pin_1); GPIO_ResetBits(GPIOB,table[gewei]); delay_ms(5); 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); } if(temp>=10) { GPIO_SetBits(GPIOB,GPIO_Pin_15); GPIO_ResetBits(GPIOB,table[shiwei]); delay_ms(1); 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); GPIO_SetBits(GPIOB,GPIO_Pin_1); GPIO_ResetBits(GPIOB,table[gewei]); delay_ms(1); 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); } if(temp>30) { GPIO_SetBits(GPIOB,GPIO_Pin_15); GPIO_ResetBits(GPIOB,table[shiwei]); delay_ms(100); 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); GPIO_SetBits(GPIOB,GPIO_Pin_1); GPIO_ResetBits(GPIOB,table[gewei]); delay_ms(150); 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); } } int main(void) { char a = 0, b = 0,count=0; //¶¨ÒåÈý¸ö¼ÆÊýÆ÷¡£ RCC_Configuration(); //µ÷Óú¯Êý GPIO_INIT(); //µ÷Óú¯Êý 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); //¹Ø±ÕÊýÂë¹Ü while(1){ if(!GPIO_ReadInputDataBit (GPIOC,GPIO_Pin_10)) //Åжϰ´¼üÊÇ·ñ°´Ï { delay_ms(100); if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_10)) { count++; //count×Ô¼Ó1£» } } if(count%2==1){ if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_8)) { delay_ms(80); if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_8)) {a++;} } if(a>100) {a=0;} //a>100£¬aÖÃ0£» shumaguan(a); } if(count%2==0){ if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)) {delay_ms(80); if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)){b++;}} if(b>100){b=0;} shumaguan(b);} } }
/**
* @brief Main program.
* @param None
* @retval None
*/
#include "stm32f10x.h" //定义
#include "stm32_eval.h"//定义
#include "stdio.h" //定义
#include "math.h" //定义
#define buff_size 16;//定义
char rx_buff[], rx_buff_count=0; // rx_buff[]数祖，rx_buff_count
初始值等于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_GPIOB, ENABLE);//使能PC
时钟
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;//推挽输出
GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化PB
GPIO_SetBits(GPIOB, 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);
}
void USART_int(long BaudRate)
{ USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
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;
USART_InitStructure.USART_Mode = USART_Mode_Rx |
USART_Mode_Tx;// 接受和发送
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时钟
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; //选择
USART1中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);//初始化中断
}
/*delay_us*/
void delay_us(u32 n)
{
u8 j;
while(n--)
for(j=0;j<10;j++);
}
/*延时函数 微秒*/
void delay_ms(u32 n)
{
while(n--)
delay_us(1000);
}
/*delay_ms*/
void USART_SendStr(char *str) //发送字符串函数
{
while((*str)!='\0') //发送完直至最后
{USART_SendData(USART1,*str++);
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) ==
RESET);
}
unsigned int my_atoi(char* pstr) //字符串
{
int s = 0;
while(*pstr != '\0') //一直扫描到字符串
{
if(*pstr >= '0' && *pstr <= '9') //字符串中有数
字0-9
{
s = s * 10 + *pstr - '0';
}
pstr++;
}
return s;
}
void Num(int i)
{
switch(i)//点亮对应输入的数字
{
case 0 : GPIO_ResetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_8|
GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);break;
case 1 : GPIO_ResetBits(GPIOB,GPIO_Pin_9|GPIO_Pin_12);
break;
case 2 : GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|
GPIO_Pin_9|GPIO_Pin_13|GPIO_Pin_14); break;
case 3 : GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|
GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14); break;
case 4 : GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_8|
GPIO_Pin_9|GPIO_Pin_12); break;
case 5 : GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|
GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_14); break;
case 6 : GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|
GPIO_Pin_8|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);break;
case 7 : GPIO_ResetBits(GPIOB,GPIO_Pin_7|GPIO_Pin_9|
GPIO_Pin_12); break;
case 8 : GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|
GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14);break;
case 9 : GPIO_ResetBits(GPIOB,GPIO_Pin_5|GPIO_Pin_7|
GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14); break;
}
}
void func(char *S,char LEN)
{
int z;
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)
{
z=my_atoi(S);
GPIO_SetBits(GPIOB,GPIO_Pin_1); //打开个位数码管
Num(z%10); //点亮各位数
delay_ms(5); //延时
GPIO_ResetBits(GPIOB,GPIO_Pin_1);//关闭个位数码管
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);//打开十位数码管
Num(z/10);
delay_ms(5);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);//关闭十位
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 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()
{
RCC_Configuration();
GPIO_INIT();
USART_int(9600);
// USART_SendStr("Please input like: data=\r\n");
//USART_SendStr("\n>");
while(1){
}
}
void USART1_IRQHandler(void) //声明接收中断函数
{
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)
//等待接收完毕
{
}
if(USART_ReceiveData(USART1)==0x0d) //如果接收到回车，结
束输入
{input_ASK();} //执行input_ASK()
else
{
USART_SendData(USART1,USART_ReceiveData(USART1)); //将数
据回送至超级终端
rx_buff[rx_buff_count]= USART_ReceiveData(USART1);
【填坑来】 在向百度和学霸们请教了之后勉强完成了1个作业
中断这个东西让我严重的怀疑了自己的智商啊救命T^T
实验模块都被我弄疯了我会乱说么@x@
#include "stm32f10x.h"
#include "stm32_eval.h"
#include <stdio.h>
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
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);
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;
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);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; //
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
int main(void)
{
RCC_Configuration();
EXTIkeyS1_Config();
EXTIkeyS2_Config();
EXTIkeyS3_Config();
EXTIkeyS4_Config();
USART_int(115200);
printf("Config done,waiting for interrupt......\r\n");
while (1)
{
}
}
void EXTIkeyS1_Config(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//打开按键 输入模式,PC8 ,S1
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);//PC8链接到中断线8
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8);
EXTI_InitStructure.EXTI_Line = EXTI_Line8;//中断线的设置
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//低电平触发
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;//设置分组
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTIkeyS2_Config(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource9);
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);
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)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//打开按键 输入模式 ,S3
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);//PC10链接到中断线10
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource10);
EXTI_InitStructure.EXTI_Line = EXTI_Line10;//中断线的设置
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//低电平触发
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;//设置分组
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);//初始化
}
void EXTIkeyS4_Config(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//打开按键 输入模式 S4
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);//PC11链接到中断线11
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource11);
EXTI_InitStructure.EXTI_Line = EXTI_Line11;//中断线的设置
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//低电平触发
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
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 EXTI15_10_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line10) != RESET)//判断中断线10上的中断是否发生
{
GPIO_SetBits(GPIOC,GPIO_Pin_2|GPIO_Pin_3);//熄灭PC2，3
printf("S3 interrupt ......\r\n");
EXTI_ClearITPendingBit(EXTI_Line10);//清除中断线10上的中断标志位
}
if(EXTI_GetITStatus(EXTI_Line11) != RESET)//判断中断线11上的中断是否发生
{
GPIO_SetBits(GPIOC,GPIO_Pin_4|GPIO_Pin_5);//熄灭PC4，5
printf("S4 interrupt ......\r\n");
EXTI_ClearITPendingBit(EXTI_Line11);//清除中断线11上的中断标志位
}
}
void EXTI9_5_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1);
printf("S2 interrupt ......\r\n");
EXTI_ClearITPendingBit(EXTI_Line8);
}
if(EXTI_GetITStatus(EXTI_Line9) != RESET)
{
GPIO_SetBits(GPIOC,GPIO_Pin_2|GPIO_Pin_3);
printf("S1 interrupt ......hahaha！\r\n");
EXTI_ClearITPendingBit(EXTI_Line9);
}
}
#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
PUTCHAR_PROTOTYPE
{
USART_SendData(EVAL_COM1, (uint8_t) ch);
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
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//库函数
#include "stm32f10x.h"
#include "stm32_eval.h"
#include
#define VREF 3.3
unsigned int temp0,temp1,temp2;
//延时函数
void delay_us(u32 n)
{
u8 j;
while(n--)
for(j=0;j<10;j++);
}
//延时函数
void delay_ms(u32 n)
{
while(n--)
delay_us(1000);
}
//几个结构体的定义
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
//配置时钟函数
void RCC_Configuration(void)
{
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);
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);//使能PA USART1
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;//TX位于PA9
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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;//悬空输出
GPIO_Init(GPIOA, &GPIO_InitStructure);//RX初始化PA10
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);
}
//
void PWM_Config()
{ uint16_t PrescalerValue = 0;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;//定义结构体
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//打开TIM2，TIM2挂在AP1上
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO , ENABLE);//开启功能复用
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;//所需的3个管脚，复用输出
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
TIM_Cmd(TIM2, ENABLE);
PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;//二、配置TIM2
TIM_TimeBaseStructure.TIM_Period = 0x07FF;
TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//脉冲宽度调制模式1
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//选择输出比较状态
TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//IM_Pulse设置了待装入捕获比较寄存器的脉冲值，取值在0x0000-0xFFFF之间
TIM_OC2Init(TIM2, &TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//（通道3）
TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//0x0000最亮,0xFFFF熄灭
TIM_OC3Init(TIM2, &TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//（通道4）
TIM_OCInitStructure.TIM_Pulse = 0xFFFF;
TIM_OC4Init(TIM2, &TIM_OCInitStructure);
TIM_ARRPreloadConfig(TIM2, ENABLE);//重新装载初始值
}
void colour(int z)//自定义的函数colour
{
switch(z)//分别点亮相应的颜色
{
case 0 : temp0=0,temp1=5000,temp2=0; /*红色*/ break;
case 1 : temp0=0,temp1=5000,temp2=2500;/*橙色*/ break;
case 2 : temp0=0,temp1=5000,temp2=5000;/*黄色*/ break;
case 3 : temp0=0,temp1=0,temp2=5000; /*绿色*/ break;
case 4 : temp0=2500,temp1=0,temp2=2500;/*青色*/ break;
case 5: temp0=5000,temp1=0,temp2=0; /*蓝色*/ break;
case 6 : temp0=2500,temp1=2500,temp2=0;/*紫色*/ break;
default: printf(" error\n");
}
}
void PWM_TEST()
{
int i=0;
for(i=0;i<7;i++)
{
colour(i); //temp1-红,temp2-绿,temp0-蓝
TIM_SetCompare2(TIM2,temp0);delay_ms(500); //设置TIM2捕获比较器2寄存器的值
TIM_SetCompare3(TIM2,temp1);delay_ms(500);//TIM——通道数（定时器，数值）
TIM_SetCompare4(TIM2,temp2);delay_ms(500);
}
}
int main(void)//主函数
{
RCC_Configuration();
USART_int(115200);
printf(" config done...\r\n");
PWM_Config();//配置pwm
delay_ms(1000);//执行延时函数
while(1)
{
PWM_TEST();
}//当以上为真时，执行PWM_TEST();函数
}
#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
PUTCHAR_PROTOTYPE
{
USART_SendData(EVAL_COM1, (uint8_t) ch);
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
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#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
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