K22系列串口程序

-27 · 2015-11-23 15:30

按照KDS的例程编写程序，串口初始化程序如果用函数封装起来，再放在main（）函数中初始化，不能成功，只有将初始化部分代码放到main（）函数中初始，就运行正常。
edma_state_t             state;
  uart_edma_state_t          uartStateEdma;

  edma_user_config_t userConfig = {
      .chnArbitration  = kEDMAChnArbitrationRoundrobin,
      .notHaltOnError  = false
};

  uart_edma_user_config_t uartConfig = {
      .bitCountPerChar = kUart8BitsPerChar,
      .parityMode    = kUartParityDisabled,
      .stopBitCount = kUartOneStopBit,
      .baudRate       = UART1_BAUD
};

  EDMA_DRV_Init(&state, &userConfig);
  UART_DRV_EdmaInit(1, &uartStateEdma, &uartConfig);

这部分函数用函数封装起来初始化就异常。

还有接收buf接收满后，不能更新buf数据。

只看该作者 · 2015-11-23 16:52

这就很奇怪了啊，你封装的函数有没有声明呢

只看该作者 · 2015-11-23 20:51

能把整个工程贴出来吗，上面的代码看不出啥来

-27 · 2015-11-24 09:59

void UART1_INI(void)
{
edma_state_t             state;
uart_edma_state_t          uartStateEdma;

  edma_user_config_t userConfig = {
      .chnArbitration  = kEDMAChnArbitrationRoundrobin,
      .notHaltOnError  = false
};

  uart_edma_user_config_t uartConfig = {
      .bitCountPerChar = kUart8BitsPerChar,
      .parityMode    = kUartParityDisabled,
      .stopBitCount = kUartOneStopBit,
      .baudRate       = UART1_BAUD
};

  EDMA_DRV_Init(&state, &userConfig);
  UART_DRV_EdmaInit(1, &uartStateEdma, &uartConfig);
}

int main(void)
{

uint32_t                   byteCountBuff;
hardware_init();
NVIC_SetPriorityGrouping(4);
GPIO_DRV_ClearPinOutput(kGpioLED1);  //测试用例
GPIO_DRV_SetPinOutput(kGpioLED1);    //测试用例
GPIO_DRV_ClearPinOutput(kGpioLED2);  //测试用例
GPIO_DRV_SetPinOutput(kGpioLED2);//测试用例

  UART1_INI();

while（1）
{
      UART_DRV_EdmaReceiveData(1,buffStart,byteCountBuff);

      UART_DRV_EdmaSendData(1, buffStart, byteCountBuff);
}

}

如果把UART1_INI中的内容移植到main里面程序运行OK，但是放到UART1_INI中运行就不正常。

-27 · 2015-11-24 10:01

void UART1_INI(void)
{

}

int main(void)
{

uint32_t                   byteCountBuff;
hardware_init();
NVIC_SetPriorityGrouping(4);
GPIO_DRV_ClearPinOutput(kGpioLED1);  //测试用例
GPIO_DRV_SetPinOutput(kGpioLED1);    //测试用例
GPIO_DRV_ClearPinOutput(kGpioLED2);  //测试用例
GPIO_DRV_SetPinOutput(kGpioLED2);//测试用例

edma_state_t             state;
uart_edma_state_t          uartStateEdma;

  edma_user_config_t userConfig = {
      .chnArbitration  = kEDMAChnArbitrationRoundrobin,
      .notHaltOnError  = false
};

  uart_edma_user_config_t uartConfig = {
      .bitCountPerChar = kUart8BitsPerChar,
      .parityMode    = kUartParityDisabled,
      .stopBitCount = kUartOneStopBit,
      .baudRate       = UART1_BAUD
};

  EDMA_DRV_Init(&state, &userConfig);
  UART_DRV_EdmaInit(1, &uartStateEdma, &uartConfig);

while（1）
{
      UART_DRV_EdmaReceiveData(1,buffStart,byteCountBuff);

      UART_DRV_EdmaSendData(1, buffStart, byteCountBuff);
}

}

这样就运行OK