topic Re: s32k144 UART Callback in S32 SDK

s32k144 UART Callback

heezes — Sun, 25 Mar 2018 09:58:40 GMT

Hello i'm using Uart communication in s32k144 in interrupt mode with the sdk generated by Processor Expert. I'm trying to use the Callback function for receiving data and send data continuously in while loop. The code stops transmitting after 4 bytes and niether does it receives. Code snippet below:

void ThisIsMyRXCallback(void *driverState, uart_event_t event, void *userData)
{
PINS_DRV_TogglePins(PTD,(LED15));
}

int main(void)
{
CLOCK_SYS_Init(g_clockManConfigsArr,CLOCK_MANAGER_CONFIG_CNT,g_clockManCallbacksArr,CLOCK_MANAGER_CALLBACK_CNT);
    CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_FORCIBLE);
    INT_SYS_InstallHandler(LPIT0_Ch0_IRQn,&LPIT_ISR,(isr_t *)0);
    LPUART_DRV_Init(INST_LPUART1, &lpuart1_State, &lpuart1_InitConfig0);
    LPUART_DRV_ReceiveData(INST_LPUART1,(uint8_t *)&datas,1);
    LPUART_DRV_InstallRxCallback(INST_LPUART1,ThisIsMyRXCallback,NULL);
    LPIT_DRV_Init(INST_LPIT1, &lpit1_InitConfig);
    LPIT_DRV_InitChannel(INST_LPIT1, 0, &lpit1_ChnConfig0);
    LPIT_DRV_StartTimerChannels(INST_LPIT1,(1<<0));
    PINS_DRV_Init(NUM_OF_CONFIGURED_PINS,g_pin_mux_InitConfigArr);
    PINS_DRV_SetPinsDirection(PTD,(LED15));
    PINS_DRV_SetPins(PTD,LED15);
/* For example: for(;;) { } */
    for(;;)
    {
       uint8_t data[20] = "Hello World\r\n";
       LPUART_DRV_SendData(INST_LPUART1,(const uint8_t *)&data,strlen(data));
       Delay(500);
    }

}

Re: s32k144 UART Callback

jiri_kral — Mon, 26 Mar 2018 06:45:51 GMT

Hi,

do you have some data consumer/sender on the other side - like some PC application that is receiving and transmitting data to EVB?

Jiri

Re: s32k144 UART Callback

heezes — Mon, 26 Mar 2018 11:27:37 GMT

Yes I'am manually sending data via a serial terminal Real Term.

Regards.

Altamash.

Re: s32k144 UART Callback

heezes — Tue, 27 Mar 2018 13:15:45 GMT

Hi, would like to tell that the issue is resolved it was probably a hardware error.

Regards.

Altamash

Re: s32k144 UART Callback

kasundinesh — Sat, 12 May 2018 06:20:55 GMT

HI, I have the same problem. How did you resolve it? Because there is the bug in the driver.

Re: s32k144 UART Callback

kasundinesh — Tue, 25 Sep 2018 17:48:53 GMT

I was able to solve this issue by using the code below.

status = UART_Init(&lpuart1_uart_instance, &lpuart1_uart_Config0);

// After calling UART_Init, you need to tell the driver to listen for a single byte
status = UART_ReceiveData(&lpuart1_uart_instance, &g_rx_byte, 1);

At the interrupt service routine.....

void on_byte_received(void *driverState, uart_event_t event, void *userData)
{
   if(event == UART_EVENT_RX_FULL)
   {
      packet_decoder(g_rx_byte);

// After you got the byte, tell the driver to listen for more bytes. Dont use the UART_ReceiveData.

// Use UART_SetRxBuffer insted.
UART_SetRxBuffer(&lpuart1_uart_instance, &g_rx_byte, 1);
}
}

Sorry for the late reply