Issue with UART/USB Rx interrupt in STM32F407VGT6 and using DP83848 LWIP stack.

[Satya_VVM]

Hello, Good morning all,

I am doing a project with STM32F407VGT6 and DP83848 Ethernet Controller using LWIP stack. My requirement is UART/USB to Ethernet. I have enabled global interrupt and IRQ Handlers for both USB & UART, but when I send data from UART/USB RX interrupt is not enabling by MCU. Please suggest me the solution to enable USB/UART interrupt for receiving data.

Thanks and regards

Satyanarayana 

[Saket_Om]

Hello @Satya_VVM 

Did you enable UART global interrupt in CubeMX side please?

[Satya_VVM]

Hello @Saket_Om,

Yes, I have enabled global interrupts in .ioc configuration settings, I am receiving data from Ethernet to UART & USB, please find the screen shots for your reference.

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if (huart->Instance == USART1)
{
Uart_RX_flag =1;
Tcp_send_flag =1;
HAL_UART_Receive_IT(&huart1, (uint8_t *)Uart_RX_Buffer,strlen((char*)Uart_RX_Buffer));
if (huart->Instance == USART2)
{
Uart_RX_flag =1;
Tcp_send_flag =1;
HAL_UART_Receive_IT(&huart2, (uint8_t *)Uart_RX_Buffer,strlen((char*)Uart_RX_Buffer));
}
}

and also I called in main function for UART1_IRQHandler(); HAL_UART_RxCpltCallback(&huart1);.

The Uart RX interrupt is working normally without LWIP software. Please suggest me in solving the problem

Thanks & Regards

Satyanarayana.

 

[Saket_Om]

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@Satya_VVM wrote:

and also I called in main function for UART1_IRQHandler(); HAL_UART_RxCpltCallback(&huart1);

 

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Could explain more please? If possible share the code.