STM32f103 双串口配置和中断

//代码仅仅是配置使能串口和相应的中断处理函数，具体功能需要自己定义 

//IAR 7.1

#include "stm32_uart.h"

uint8_t card_ture=0;
uint16_t add_count=0;
uint8_t Key_Data[1]={0};
uint8_t Media_Flag=0;

uint8_t card_code[4];  //[5:1]save the card SN, [0]valid or invalid
uint8_t Temp_Card_Num[4];
uint8_t cardcode_rx_complete = 0;

uint32_t uart_config_record_map[4] = {
    0,
    UART_CONFIG_UART_MEMORY_ADDR,
    FIRMWARE_VERSION_MEMORY_ADDR,
    SCHEME_SPECIFIC_MEMORY_ADDR
};

UartConfig_TypeDef the_uart_config;

void stm32_uart_init(uint8_t uart_port, uint32_t BaudRate)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;

    /*Fill the structure of uart init*/
    if(uart_port == UART2)
    {
        /*Fill the structure of uart init*/
        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;
        /*Enable priph clock*/
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
        
        
        /*Config gpio as uart pin */
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;    
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
        GPIO_Init(GPIOA, &GPIO_InitStructure);
        
        /*Config gpio as uart pin */
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;  
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
        GPIO_Init(GPIOA, &GPIO_InitStructure);
      
        /*Init uart*/
        USART_Init(USART2, &USART_InitStructure);
        /*Enable uart*/
        /*Clear flags*/
        USART_ClearFlag(USART2, USART_FLAG_TC);
        
        NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
        NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; 
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; 
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
        NVIC_Init(&NVIC_InitStructure);
        USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); 
        USART_Cmd(USART2, ENABLE);  
    }
    else if(uart_port == UART1)
    {
        /*Enable priph clock*/
      
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
        
        /*Fill the structure of uart init*/
        USART_InitStructure.USART_BaudRate = BaudRate;    
        USART_InitStructure.USART_StopBits = USART_StopBits_1;
        if(the_uart_config.checksum==Parity_No)
        {
            USART_InitStructure.USART_WordLength = USART_WordLength_8b; //USART_WordLength_8b
            USART_InitStructure.USART_Parity = USART_Parity_No;   //USART_Parity_No
        }
        else if(the_uart_config.checksum==Parity_Odd)
        {
            USART_InitStructure.USART_WordLength = USART_WordLength_9b; //USART_WordLength_9b
            USART_InitStructure.USART_Parity = USART_Parity_Odd;   //USART_Parity_Odd
        }
        else if(the_uart_config.checksum==Parity_Even)
        {
            USART_InitStructure.USART_WordLength = USART_WordLength_9b; //USART_WordLength_9b
            USART_InitStructure.USART_Parity = USART_Parity_Even;   //USART_Parity_Even
        }
        else
        {
        
        }
        USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
        USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
        
        /*Config gpio as uart pin */
        GPIO_InitStructure.GPIO_Pin = UART1_TX;  
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
        GPIO_Init(GPIOA, &GPIO_InitStructure);
        
        /*Init uart*/
        USART_Init(USART1, &USART_InitStructure);
        /*Enable uart*/
        //USART_Cmd(USART1, ENABLE);   
        /*Clear flags*/
        USART_ClearFlag(USART1, USART_FLAG_TC); 
#if 0       
        NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
        NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; 
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; 
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
        NVIC_Init(&NVIC_InitStructure);
        //USART_ITConfig(USART1, USART_IT_RXNE | USART_IT_TXE, ENABLE); 
#endif        
        USART_Cmd(USART1, ENABLE); 
    }
}


static void stm32_uart_senddatas(uint8_t uart_port, const uint8_t* data, uint16_t len)
{
    uint16_t count;
    if(uart_port == UART1)
    {
        for(count = 0; count < len; count++)
        {
            USART_SendData(USART1, data[count]);
            while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
        }
    }
    else if(uart_port == UART2)
    {
        for(count = 0; count < len; count++)
        {
            USART_SendData(USART2, data[count]);
            while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
        }
    }
}

static uint8_t* uart1_tx_buffer;
static uint8_t uart1_tx_buffer_len;
static uint8_t uart1_tx_buffer_index = 0;
void stm32_uart_pro_poweron(ProComm_TypeDef comm)
{
    USART_ClearFlag(USART1,USART_FLAG_TC);    //清除标志位 否则第一位数据丢失
    switch(comm)

    {

    }
    //USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
    //USART_Cmd(USART1, ENABLE); 
}

void stm32_uart2_senddata(uint8_t uart_port, const uint8_t* data, uint16_t len)
{
    USART_ClearFlag(USART2,USART_FLAG_TC);    //清除标志位 否则第一位数据丢失
    stm32_uart_senddatas(uart_port, data,len);
}

void USART1_IRQHandler(void)
{
    
    if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
    {   
        USART_ClearITPendingBit(USART1, USART_IT_TXE);
        /* Write one byte to the transmit data register */
        USART_SendData(USART1, uart1_tx_buffer[uart1_tx_buffer_index++]);

        if(uart1_tx_buffer_index == uart1_tx_buffer_len)
        {
          /* Disable the USARTz Transmit interrupt */
          USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
          uart1_tx_buffer_index = 0;
        }
    }
}
/*
void USART2_IRQHandler(void)
{
    static uint8_t index = 1;
    static uint8_t checksum = 0;
    if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
    {
        USART_ClearITPendingBit(USART2, USART_IT_RXNE);
        card_code[index] = USART_ReceiveData(USART2);
        if(index < 5)
        {
            checksum ^= card_code[index++];
        }
        else
        {
            if(checksum == card_code[5])
            {

            }
            else
            {
            }
            cardcode_rx_complete = 1;
            checksum = 0;
        }
    }
}
*/ 

void USART2_IRQHandler(void)
{
    uint8_t index=0;
    if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
    {
        USART_ClearITPendingBit(USART2, USART_IT_RXNE);
        Key_Data[index] = USART_ReceiveData(USART2);
        switch(Key_Data[0])
        {
       
        }
    }
    //if(USART_GetITStatus(USART2, USART_IT_TXE) != RESET)
    //{
       // USART_ClearITPendingBit(USART2, USART_IT_TXE);
    //}
}