HAL_UART_Transmit_IT:只发送几个字节 [英] HAL_UART_Transmit_IT: only a few bytes are sent

问题描述

我在使用 FreeRTOS 的 STM32F407 上遇到了问题.到目前为止，发送到 xbee 模块的大部分消息都已发送.只有有时(5 到 60 分钟后)TX 过程会被中断.

i've got a problem on my STM32F407 with FreeRTOS. So Far most of the messages to a xbee module are sent. Only Sometimes (after 5 to 60 minutes) the TX process will be interrupted.

在调试会话中，我可以看到，在 2 个字节(约 40 个字节)之后不再设置 TXEIE.此外，UART_HandleTypeDef 的 TxXferCount 为 42(TxXferSize:44).SR-Register 中的标志 TXE 已设置，但 CR1-Register 中的 TXEIE 未设置.

In the debug session i can see, that TXEIE ist not set anymore after the 2 bytes (of ~40). Also the TxXferCount of the UART_HandleTypeDef is 42 (TxXferSize: 44). The flag TXE in SR-Register ist set but the TXEIE in CR1-Register not.

ISR 被激活 2 次以将它们存储到数据/移位寄存器中.这我可以在逻辑分析仪上看到.但我无法弄清楚写作任务/isr 的来源.

The ISR was active for 2 times to store them into data/shift registers. This i can see on logic analyzer. But i can't figure out the source of the writing task/isr.

Xbee 模块获取消息并发送响应消息.感谢您的任何回复！

The Xbee module get messages and sends response messages. Thanks for any Response!

初始化:

GPIO_InitTypeDef GPIO_InitStruct;

__GPIOA_CLK_ENABLE();
__GPIOD_CLK_ENABLE();
__GPIOF_CLK_ENABLE();


/* RX-TX PIN */
GPIO_InitStruct.Pin = XBEE1_TX_PIN | XBEE1_RX_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
HAL_GPIO_Init(XBEE1_TX_PORT, &GPIO_InitStruct);

/* Power*/
GPIO_InitStruct.Pin =  XBEE1_PWR_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(XBEE1_PWR_PORT, &GPIO_InitStruct);
HAL_GPIO_WritePin(XBEE1_PWR_PORT, XBEE1_PWR_PIN, GPIO_PIN_SET);

/* Reset PIN */
GPIO_InitStruct.Pin = XBEE1_RESET_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(XBEE1_RESET_PORT, &GPIO_InitStruct);

/* SLEEP_RQ PIN */
GPIO_InitStruct.Pin = XBEE1_SLEEP_RQ_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(XBEE1_SLEEP_RQ_PORT, &GPIO_InitStruct);



__USART2_CLK_ENABLE();

uart.Instance = USART2;
uart.Init.BaudRate = baud;
uart.Init.WordLength = UART_WORDLENGTH_8B;
uart.Init.StopBits = UART_STOPBITS_1;
uart.Init.Parity = UART_PARITY_NONE;
uart.Init.HwFlowCtl = UART_HWCONTROL_NONE;
uart.Init.Mode = UART_MODE_TX_RX;

if (HAL_UART_Init(&uart) != HAL_OK) {
    Error_Handler(XBEE1_ERROR);
}

//clear pending IRQs
__HAL_UART_CLEAR_FLAG(&uart, UART_FLAG_RXNE);
__HAL_UART_CLEAR_FLAG(&uart, USART_FLAG_TC);
__HAL_UART_CLEAR_FLAG(&uart, USART_FLAG_ORE);
__HAL_UART_CLEAR_FLAG(&uart, USART_FLAG_PE);
__HAL_UART_CLEAR_FLAG(&uart, USART_FLAG_FE);
__HAL_UART_CLEAR_FLAG(&uart, USART_FLAG_NE);
__HAL_UART_CLEAR_FLAG(&uart, USART_FLAG_TXE);

/* NVIC */
HAL_NVIC_SetPriority(USART2_IRQn, 6, 0);
HAL_NVIC_EnableIRQ(USART2_IRQn);

传输

HAL_StatusTypeDef UART_Xbee1::send( uint8_t* pdata, size_t sz ) {
    return HAL_UART_Transmit_IT(&uart, pdata, sz);
}

情监侦

extern "C" void USART2_IRQHandler(void){
    testpin1.on();
    UART_HandleTypeDef* uart_c = &(Argos::xbee1->uart);
    uint32_t tmp1 = 0;
    uint32_t tmp2 = 0;
    tmp1 = __HAL_UART_GET_FLAG(uart_c, UART_FLAG_RXNE);
    tmp2 = __HAL_UART_GET_IT_SOURCE(uart_c, UART_IT_RXNE);
    if((tmp1 != RESET) && (tmp2 != RESET)){
        uint8_t in = (uint8_t)(uart_c->Instance->DR & (uint8_t)0x00FF);
        *uart_c->pRxBuffPtr++ = in;

        //overwrite expected bytes, when packet size is known
        if(xbee1->inApiRecMode){
            if( (uart_c->RxXferSize-uart_c->RxXferCount) == 1 ){
                xbee1->apiSize = 0;
                xbee1->apiSize = in << 8;
            }else if( (uart_c->RxXferSize-uart_c->RxXferCount) == 2 ){
                xbee1->apiSize |= in;
                uart_c->RxXferCount = xbee1->apiSize + 2;
            }
        }

        if( ((uart_c->RxXferCount)-1) == 0){
            (uart_c->RxXferCount)--;
              __HAL_UART_DISABLE_IT(uart_c, UART_IT_RXNE);

              /* Check if a transmit process is ongoing or not */
              if(uart_c->State == HAL_UART_STATE_BUSY_TX_RX){
                  uart_c->State   = HAL_UART_STATE_BUSY_TX;
              }else{
                /* Disable the UART Parity Error Interrupt */
                __HAL_UART_DISABLE_IT(uart_c, UART_IT_PE);

                /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
                __HAL_UART_DISABLE_IT(uart_c, UART_IT_ERR);

                uart_c->State = HAL_UART_STATE_READY;
              }

              Message* msg = &(xbee1->msg_callBack);
              msg->code = (uint8_t) XbeeContext::MessageType::RECEIVE_EVENT;
              msg->value = 0;
              xbee1->rcvCallback->sendMsg(msg);
            }else if( (uart_c->RxXferCount) == 0){
                Error_Handler(XBEE1_ERROR);
            }else{
                (uart_c->RxXferCount)--;
            }
    }else{

        //other cases
        HAL_UART_IRQHandler( uart_c );
    }
    testpin1.off();
}

推荐答案

这个 isr 处理程序代码来自哪里?它看起来与 stm32f4 HAL 1.8 中的内容没有任何相似之处?

where is this isr handler code comming from ? it does not look any similar to what's in stm32f4 HAL 1.8 ?

如果您使用 hal 最好只链接您的 irq 处理程序hal 并定义对托管错误和完成的回调.

if you use hal it should be better to just link your irq handler to hal and define callback to managed error and completion.

HAL_UART_TxCpltCallbackHAL_UART_RxCpltCallbackHAL_UART_ErrorCallback

HAL_UART_TxCpltCallback HAL_UART_RxCpltCallback HAL_UART_ErrorCallback

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