FRDM-K82F PIT triggering hardfault when used with FLEXIO Uart

lalit0611 — Mon, 02 Nov 2020 13:45:32 GMT

Hi,

I'm implementing flexio uart with pit, but the board is going into hard fault at the first call of enable interrupt or setting timer. I am initializing PIT in my main:

void pit_init(void)
{
    pit_config_t        pitConfig;
    PIT_GetDefaultConfig(&pitConfig);
    PIT_Init(PIT, &pitConfig);
}

Then in a library file I'm initializing Flexio UART and PIT interrupts.

uart_init();
    PORT_SetPinMux(PORTB, SIM808_PWR, kPORT_MuxAsGpio);
    PIT_SetTimerPeriod(PIT, kPIT_Chnl_0, MSEC_TO_COUNT(1000000U, PIT_SOURCE_CLOCK));
    PIT_EnableInterrupts(PIT, kPIT_Chnl_0, kPIT_TimerInterruptEnable);
    EnableIRQ(PIT0_IRQn);

Here is my uart_init:

void uart_init(void)
{
    flexio_uart_config_t        uart_config;
    FLEXIO_UART_GetDefaultConfig(&uart_config);
    uart_dev.flexioBase            = BOARD_FLEXIO_BASE;
    uart_dev.RxPinIndex            = SIM808_RX;
    uart_dev.TxPinIndex            = SIM808_TX;
    uart_dev.shifterIndex[0]    = 2U;
    uart_dev.shifterIndex[1]    = 3U;
    uart_dev.timerIndex[0]        = 2U;
    uart_dev.timerIndex[1]        = 3U;
    FLEXIO_UART_Init(&uart_dev, &uart_config, FLEXIO_CLOCK_FREQUENCY);
    FLEXIO_UART_TransferCreateHandle(&uart_dev, &g_uart_handle, gsm_uart_event_handler, NULL);
}

The exact code where hard fault triggers is "base->CHANNEL[channel].LDVAL = count;". Also is there any example for Parallel Transmit on FLEXIO Bus, please point me to that.

Thanks in advance for help

Re: FRDM-K82F PIT triggering hardfault when used with FLEXIO Uart

lalit0611 — Sat, 16 Jul 2016 17:24:35 GMT

I feel so stupid right now, I didn't call pit_init inside my main :smileysad:, everything works fine now . If anyone has link for an example for parallel transmit/receive, please post the link.

Kinetis MicrocontrollersのトピックFRDM-K82F PIT triggering hardfault when used with FLEXIO Uart

FRDM-K82F PIT triggering hardfault when used with FLEXIO Uart

Re: FRDM-K82F PIT triggering hardfault when used with FLEXIO Uart