I started from zero with a new STM32CubeMX and STM32CubeIDE project including the latest HAL librarys. I use the Nucleo dev board and create a UART setup with interrupts, thats all.
static void MX_USART1_UART_Init(void)
{
huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_8;
huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
{
Error_Handler();
}
}I can receive fixed data lenght with 5 bytes:
HAL_UART_Receive_IT(&huart1, (uint8_t *)Rx_Buffer, 5);The MCU is sending the answer with:
HAL_UART_Transmit_IT(&huart1, buffer, bufsize);BUT the data are NOT right in any way:
If I send the exact same buffer content with: HAL_UART_Transmit(&huart1, buffer, bufsize, 20); the data are transmitted right!
Now thats the big question why HAL_UART_Transmit_IT() can not send the data right??? There is nothing else running at this code, it just receive and sends some data. How the MCU should work savely in combination with some real working code if the HAL cannot do the simple serial job?? In this case I can not trust the HAL library.
