#include "stm32f10x.h"
#include "stdio.h"
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
#define buff_size 16;
char rx_buff[],rx_buff_count=0;
void RCC_Configuration(void) ;
void GPIO_INIT(void) ;
void USART_int(long BaudRate);
void USART_SendStr(char *str);
void delay_ms(u32 n) ;
void delay_us(u32 n);
/****??? ****/
int main()
{
RCC_Configuration();
GPIO_INIT();
USART_int(9600);
GPIO_ResetBits(GPIOC,0xffff);
delay_ms(200);
GPIO_SetBits(GPIOC,0xffff);
USART_SendStr("USART Led Speed\r\n");
USART_SendStr("\n>");//
while(1);
}
void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus;
RCC_DeInit();
RCC_HSEConfig(RCC_HSE_ON);
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus==SUCCESS)
{
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_PCLK2Config(RCC_HCLK_Div1);
//RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_9);//*??PLL?????72M
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY)==RESET);
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource() != 0x08);
}
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, 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);
}
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 GPIO_INIT(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, 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);
}
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);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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_0);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void USART_SendStr(char *str)
{
while((*str)!='\0')
{
USART_SendData(USART1,*str++);
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}
}
unsigned int translate(char* pstr)
{
int s = 0;
while(*pstr != '\0')
{
if(*pstr >= '0' && *pstr <= '9')
{
s = s * 10 + *pstr - '0';
}
pstr++;
}
return s;
}
void LED(char *S,char LEN)
{
int m,i;
int a[8]={GPIO_Pin_0,GPIO_Pin_1,GPIO_Pin_2,GPIO_Pin_3,GPIO_Pin_4,GPIO_Pin_5,GPIO_Pin_6,GPIO_Pin_7};
m=translate(S);
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);
delay_ms(100);
for(i=0;i<8;i++)
{
GPIO_ResetBits(GPIOC,a[i]);
delay_ms(m);
GPIO_SetBits(GPIOC,a[i]);
delay_ms(m);
}
}
void input_ASK()
{
char j;
LED(rx_buff,rx_buff_count);
rx_buff_count=0;
for (j=0;j<10;j++)
{
rx_buff[j]='\0';
}
USART_SendStr("\n>");
}
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);
}
STM32
MCU
通讯及无线技术
物联网技术
电子DIY
板卡试用
基础知识
软件与操作系统
我爱生活
小e食堂