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RA4M2 UART RX interrupt not firing

DB

Hello  Everyone, 

I have implemented  FREERTOS CLI using uart on RA4m2. actually i am  able to trasnmit using uart interface but unable to receive any command using uart.

I am facing to generate RX interrupt . here is my source code for uart call back function. It is an event based application using thready queue .  

Now the same source code using same call back function is working on RA6M3 controller but not on RA4M2. 

do i  need to specify something 

void cli_dbgUartCallback(uart_callback_args_t *p_args)
{
    Event_t event = { .id = EV_NO_EVENT, .payload.u32Arr[0] = 0 };
    m_dbgUartEvent = p_args->event;

    if ((UART_EVENT_RX_CHAR == m_dbgUartEvent) && (m_cmdInProgress == false))
    {
        if (m_bufferIndex < (CMD_BUFFER_SIZE - 1))
        {
            switch (p_args->data)
            {
                /* If Enter is pressed by user, send event to process the data */
                case '\r':
                {
                    /* Send command received event */
                    event.id = EV_DBG_UART_CMD_RCVD;
                    event.payload.u32Arr[0] = (uint32_t)&m_cmdBuffer[0];
                    evh_handleEvent(&event);
                    /* Set command in progress flag */
                    m_cmdInProgress = true;

                    /* Clear buffer index */
                    m_bufferIndex = 0;
                    break;
                }
                case '\b':
                {
                    /* Backspace was pressed.  Erase the last character in
                     * the input buffer
                     */
                    if (m_bufferIndex > 0)
                    {
                        m_bufferIndex--;
                        m_cmdBuffer[m_bufferIndex] = '\0';
                    }
                    break;
                }
                case '\n':
                    /* ignore \n escape */
                    break;
                default:
                {
                    /* Write RX data to input buffer */
                    m_cmdBuffer[m_bufferIndex++] = (char) p_args->data;
                    break;
                }
            }
        }
        else
        {
            /* Buffer overflow! */
            m_bufferIndex = 0;
        }
    }
}

Top Replies

  • in reply to IK_Renesas +1 verified

    Hello ,

    I found the Problem. 

    I was using pin configuration for RA4M2 evluation kit but my contrller is R7FA4M2AD3CFM.

    I just deleted unwanted pinconfig file and generated g_bsp_pin_cfg base…

Parents Reply Children
  • 0 in reply to AZ_Renesas

    Actually i have mulple thread based application and i have removed all the thread. first tried to run the application using single thread. it  worked.  do you think may there can be issue of context switching ot interrupt priority which causes RX interrupt to never arise ?

    I still have the problem on my main application. 

    can you tell me how much i can increase the  main stack size for RA4M2?

  • 0 in reply to DB

    It sounds like other interrupts with higher priority did not let this interrupt to execute. 

    Looking at your project, the UART stack is used from the CLI thread so you should place it under the CLI thread and not in HAL/Common. Similarly for the other stacks, you need to place them under the correct thread.

    Please fix this and then try with the same stack or bigger.

  • 0 in reply to DB

    Hello,

    From the project you shared it seems that stack and heap size are big enough. Both have been set to 0x4000 which is 16 Kbytes. Have you tried to debug your code step by step, in order to check after which line control goes to BSP_CFG_HANDLE_UNRECOVERABLE_ERROR(0)?

    Best Regards,

    IK

  • +1 in reply to IK_Renesas

    Hello ,

    I found the Problem. 

    I was using pin configuration for RA4M2 evluation kit but my contrller is R7FA4M2AD3CFM.

    I just deleted unwanted pinconfig file and generated g_bsp_pin_cfg based  on my controller .

    It worked. Thanks for the support.

    Regards,

  • 0 in reply to DB

    We are glad that your issue was solved!

    Thanks for sharing your solution with us!

    Best Regards,

    IK