s32k144 chip reset by watchdog, but cannot enter watchdog irq

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s32k144 chip reset by watchdog, but cannot enter watchdog irq

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郑文豪
Contributor I
I disable WDOG_DRV_Trigger(INST_WATCHDOG1) function so that chip can reset by watchdog if timeout.
Code:
/* Including needed modules to compile this module/procedure */
#include "Cpu.h"
#include "clockMan1.h"
#include "pin_mux.h"
#include "watchdog1.h"
#include "pwrMan1.h"
#if CPU_INIT_CONFIG
  #include "Init_Config.h"
#endif
 
volatile int exit_code = 0;
/* User includes (#include below this line is not maintained by Processor Expert) */
 
#include <stdint.h>
#include <stdbool.h>
 
/* To use with other board than EVB please comment the following line */
 
#define EVB
 
#ifdef EVB
    #define LED0            15U
    #define LED1            16U
    #define LED_GPIO        PTD
#else
    #define LED0             0U
    #define LED1             1U
    #define LED_GPIO        PTC
#endif
 
/* Initialize SysTick counter */
void SysTick_Init(void)
{
S32_SysTick->RVR = 0xFFFFFFul;
S32_SysTick->CVR = 0ul;
S32_SysTick->CSR = 0u;
}
 
/* Enable SysTick counter and interrupt */
void SysTick_Enable(void)
{
S32_SysTick->CSR = S32_SysTick_CSR_TICKINT(1u) | S32_SysTick_CSR_ENABLE(1);
}
 
/* Disable SysTick */
void SysTick_Disable(void)
{
S32_SysTick->CSR = 0ul;
}
 
/* SysTick IRQ handler */
void SysTick_Handler(void)
{
/* Variable that stores the number of Watchdog triggers */
static uint8_t s_refreshNumber = 0;
/* After 8 watchdog refreshes, the interrupt will no longer reset the wdog counter */
if(s_refreshNumber <
{
/* Reset Watchdog counter */
// WDOG_DRV_Trigger(INST_WATCHDOG1);
/* Toggle LED0 */
PINS_DRV_TogglePins(LED_GPIO, (1 << LED0));
/* Increment refresh number */
s_refreshNumber++;
}
}
 
/* WatchDog IRQ handler */
void WDOG_ISR(void)
{
/* Turn off both LEDs */
    PINS_DRV_SetPins(LED_GPIO, (1 << LED0) | (1 << LED1));
/* Disable the SysTick timer */
SysTick_Disable();
}
 
/*! 
  \brief The main function for the project.
  \details The startup initialization sequence is the following:
 * - __start (startup asm routine)
 * - __init_hardware()
 * - main()
 *   - PE_low_level_init()
 *     - Common_Init()
 *     - Peripherals_Init()
*/
int main(void)
{
  /* Write your local variable definition here */
 
  /*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/
  #ifdef PEX_RTOS_INIT
    PEX_RTOS_INIT();                 /* Initialization of the selected RTOS. Macro is defined by the RTOS component. */
  #endif
  /*** End of Processor Expert internal initialization.                    ***/
 
    /* Initialize and configure clocks
     *  -   Setup system clocks
     *  -   Enable clock feed for Ports
     *  -   See Clock Manager component for more info
     */
    CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT,
                        g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);
    CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);
 
 
    /* Initialize pins
     *  -   Setup output pins for LEDs
     *  -   See PinSettings component for more info
     */
    PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr);
 
    /* Stop if the previous reset was caused by the Watchdog */
    if(POWER_SYS_GetResetSrcStatusCmd(RCM, RCM_WATCH_DOG) == true)
    {
    /* Turn on both LEDs */
        PINS_DRV_WritePin(LED_GPIO, LED0, 0u);
        PINS_DRV_WritePin(LED_GPIO, LED1, 0u);
    }
    else
    {
    /* Turn off both LEDs */
PINS_DRV_WritePin(LED_GPIO, LED0, 1u);
PINS_DRV_WritePin(LED_GPIO, LED1, 1u);
 
/* Install IRQ handlers for WDOG and SysTick interrupts */
INT_SYS_InstallHandler(WDOG_EWM_IRQn, WDOG_ISR, (isr_t *)0);
INT_SYS_InstallHandler(SysTick_IRQn, SysTick_Handler, (isr_t *)0);
 
/* Enable Watchdog IRQ */
INT_SYS_EnableIRQ(WDOG_EWM_IRQn);
 
/* Configure and enable SysTick */
SysTick_Init();
SysTick_Enable();
 
/* Initialize WDOG */
WDOG_DRV_Init(INST_WATCHDOG1, &watchdog1_Config0);
    }
    while(1)
    {
    ;
    }
  /*** Don't write any code pass this line, or it will be deleted during code generation. ***/
  /*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/
  #ifdef PEX_RTOS_START
    PEX_RTOS_START();                  /* Startup of the selected RTOS. Macro is defined by the RTOS component. */
  #endif
  /*** End of RTOS startup code.  ***/
  /*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/
  for(;;) {
    if(exit_code != 0) {
      break;
    }
  }
  return exit_code;
  /*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/
} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/
 
/* END main */
/*!
** @}
*/
/*
** ###################################################################
**
**     This file was created by Processor Expert 10.1 [05.21]
**     for the Freescale S32K series of microcontrollers.
**
** ###################################################################
*/
 
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1 Solution
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danielmartynek
NXP TechSupport
NXP TechSupport

Hello,

The interrupt is active only for 128 bus clock cycles and after that the MCU is reset.

It was discussed here:

https://community.nxp.com/t5/S32K/WDOG-direct-reset-does-not-enter-the-interrupt-S32K144/m-p/724793

You can toggle the GPIOs a few times in the ISR and scope the pins.

 

Regards,

Daniel

View solution in original post

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141 Views
danielmartynek
NXP TechSupport
NXP TechSupport

Hello,

The interrupt is active only for 128 bus clock cycles and after that the MCU is reset.

It was discussed here:

https://community.nxp.com/t5/S32K/WDOG-direct-reset-does-not-enter-the-interrupt-S32K144/m-p/724793

You can toggle the GPIOs a few times in the ISR and scope the pins.

 

Regards,

Daniel

View solution in original post

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