stm32應用-簡單的串口接收與發送程序

庫版本 ：ST3.0.0

文件：mian.c

//功能：串口初始化、打開定時器中斷，然后一直接收數據狀態就好了。發送在中斷中實現

#include "stm32f10x.h"
#include "usart.h"

u8 USART_rx_data;
int main(void)
{

RCC_Configuration(); //系統時鐘配置
GPIO_Configuration(); //端口初始化
NVIC_Configuration(); //中斷源配置
USART_Configuration(); //串口1初始化
Time_Init(); //定時器初始化
#ifdef DEBUG
debug();
#endif
TIM_Cmd(TIM3,ENABLE);
while(1)
{

}

}

文件：usart.c

#include "stm32f10x.h"
#include "stdio.h"
#include "usart.h"
unsigned char auchCRCHi [256] ={
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,
0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,
0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,
0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,
0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,
0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,
0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40};
unsigned char auchCRCLo [256] ={
0x00,0xC0,0xC1,0x01,0xC3,0x03,0x02,0xC2,0xC6,0x06,0x07,0xC7,0x05,0xC5,0xC4,0x04,
0xCC,0x0C,0x0D,0xCD,0x0F,0xCF,0xCE,0x0E,0x0A,0xCA,0xCB,0x0B,0xC9,0x09,0x08,0xC8,
0xD8,0x18,0x19,0xD9,0x1B,0xDB,0xDA,0x1A,0x1E,0xDE,0xDF,0x1F,0xDD,0x1D,0x1C,0xDC,
0x14,0xD4,0xD5,0x15,0xD7,0x17,0x16,0xD6,0xD2,0x12,0x13,0xD3,0x11,0xD1,0xD0,0x10,
0xF0,0x30,0x31,0xF1,0x33,0xF3,0xF2,0x32,0x36,0xF6,0xF7,0x37,0xF5,0x35,0x34,0xF4,
0x3C,0xFC,0xFD,0x3D,0xFF,0x3F,0x3E,0xFE,0xFA,0x3A,0x3B,0xFB,0x39,0xF9,0xF8,0x38,
0x28,0xE8,0xE9,0x29,0xEB,0x2B,0x2A,0xEA,0xEE,0x2E,0x2F,0xEF,0x2D,0xED,0xEC,0x2C,
0xE4,0x24,0x25,0xE5,0x27,0xE7,0xE6,0x26,0x22,0xE2,0xE3,0x23,0xE1,0x21,0x20,0xE0,
0xA0,0x60,0x61,0xA1,0x63,0xA3,0xA2,0x62,0x66,0xA6,0xA7,0x67,0xA5,0x65,0x64,0xA4,
0x6C,0xAC,0xAD,0x6D,0xAF,0x6F,0x6E,0xAE,0xAA,0x6A,0x6B,0xAB,0x69,0xA9,0xA8,0x68,
0x78,0xB8,0xB9,0x79,0xBB,0x7B,0x7A,0xBA,0xBE,0x7E,0x7F,0xBF,0x7D,0xBD,0xBC,0x7C,
0xB4,0x74,0x75,0xB5,0x77,0xB7,0xB6,0x76,0x72,0xB2,0xB3,0x73,0xB1,0x71,0x70,0xB0,
0x50,0x90,0x91,0x51,0x93,0x53,0x52,0x92,0x96,0x56,0x57,0x97,0x55,0x95,0x94,0x54,
0x9C,0x5C,0x5D,0x9D,0x5F,0x9F,0x9E,0x5E,0x5A,0x9A,0x9B,0x5B,0x99,0x59,0x58,0x98,
0x88,0x48,0x49,0x89,0x4B,0x8B,0x8A,0x4A,0x4E,0x8E,0x8F,0x4F,0x8D,0x4D,0x4C,0x8C,
0x44,0x84,0x85,0x45,0x87,0x47,0x46,0x86,0x82,0x42,0x43,0x83,0x41,0x81,0x80,0x40};

unsigned short CRC16(unsigned char* puchMsg, unsigned short usDataLen)
{

unsigned char uchCRCHi = 0xFF ;
unsigned char uchCRCLo = 0xFF ;
unsigned char uIndex ;
while (usDataLen--)
{
uIndex = uchCRCHi^*puchMsg++;
uchCRCHi = uchCRCLo^auchCRCHi[uIndex];
uchCRCLo = auchCRCLo[uIndex];
}
return (uchCRCHi << 8 | uchCRCLo) ;
}

void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus; //枚舉變量，定義高速時鐘的啟動狀態
RCC_DeInit(); //RCC系統重置，用于Debug目的
RCC_HSEConfig(RCC_HSE_ON); //使能高速時鐘源HSE
HSEStartUpStatus = RCC_WaitForHSEStartUp(); //等待HSE穩定
if(HSEStartUpStatus == SUCCESS)
{
FLASH_SetLatency(FLASH_Latency_2);
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

RCC_HCLKConfig(RCC_SYSCLK_Div1); // HCLK = SYSCLK
RCC_PCLK2Config(RCC_HCLK_Div1); // PCLK2 = HCLK
RCC_PCLK1Config(RCC_HCLK_Div2); ///PCLK1 = HCLK/2

RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
RCC_PLLCmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET){}

RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
while(RCC_GetSYSCLKSource() != 0x08){}
}
RCC_APB2PeriphClockCmd( RCC_APB2Periph_USART1 |RCC_APB2Periph_GPIOA |RCC_APB2Periph_AFIO |RCC_APB2Periph_GPIOB , ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
}
//------------------------------------------------------------------
//函數名：void GPIO_Configuration()
//輸入參數：null
//返回參數：null
//說明：GPIO初始化函數
//------------------------------------------------------------------
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;//GPIO初始化結構體聲明


GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //USART1 TX
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //復用推挽輸出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure); //A端口

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //USART1 RX
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //復用浮空輸入
GPIO_Init(GPIOA, &GPIO_InitStructure); //A端口

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}

//------------------------------------------------------------------
//函數名：void NVIC_Configuration()
//輸入參數：null
//返回參數：null
//說明：NVIC初始化函數
//------------------------------------------------------------------
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure; //NVIC初始化結構體聲明

#ifdef VECT_TAB_RAM

NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); //如果程序在RAM中調試那么定義中斷向量表在RAM中否則在Flash中
#else

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; //設置串口1中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //搶占優先級 0
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;//子優先級為0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能
NVIC_Init(&NVIC_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //設置定時器3全局中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; //搶占優先級 1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子優先級為0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能
NVIC_Init(&NVIC_InitStructure);
}
//------------------------------------------------------------------
//函數名：void USART_Configuration()
//輸入參數：null
//返回參數：null
//說明:串口初始化函數
//------------------------------------------------------------------
void USART_Configuration(void){
USART_InitTypeDef USART_InitStructure; //串口初始化結構體聲明
USART_ClockInitTypeDef USART_ClockInitStruct;
USART_InitStructure.USART_BaudRate = 115200;//設置波特率為115200bps
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//數據位8位
USART_InitStructure.USART_StopBits = USART_StopBits_1;//停止位1位
USART_InitStructure.USART_Parity = USART_Parity_No;//無校驗位
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //無硬件流控
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//接受和發送模式都打開

USART_ClockInitStruct.USART_Clock=USART_Clock_Disable; //串口時鐘禁止
USART_ClockInitStruct.USART_CPOL=USART_CPOL_Low; //數據低電平有效
USART_ClockInitStruct.USART_CPHA=USART_CPHA_2Edge;//配置CPHA使數據在第2個邊沿的時候被捕獲
USART_ClockInitStruct.USART_LastBit=USART_LastBit_Disable;// 禁用最后一位,使對應的時鐘脈沖不會再輸出到SCLK引腳
USART_ClockInit(USART1, &USART_ClockInitStruct); //配置USART與時鐘相關的設置

USART_Init(USART1, &USART_InitStructure);//配置串口參數函數

USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //使能接收中斷
//USART_ITConfig(USART1, USART_IT_TXE, ENABLE);//使能發送緩沖空中斷
//USART_ITConfig(USART1, USART_IT_TC, ENABLE);//使能發送完成中斷
USART_ClearFlag(USART1,USART_FLAG_TC); //清除發送完成標志位
USART_Cmd(USART1, ENABLE);//使能串口1
}