Voltage Interruption Tester for EN 61000-4-29 Code Update

Introduction
This blog provides a software update to the Voltage Interruption Tester discussed in previous posts

Code Changes
A simple software watchdog was added to the code. The watchdog duration was determined by measuring the maximum cycle time of the main loop with some additional time to account for jitter.

Decrementing counter was placed in the system timer.

/*******************************************************************************
* @brief System Timer
* @note  1 ms
*******************************************************************************/
CY_ISR(Timer_System_isr)
{         
    ...
    if (WD_Ctr != 0)
    {
        WD_Ctr--;
        if (WD_Ctr == 0)
        {   
            CySoftwareReset();      /* Should never get here */
        }
     }
    ...
}

Time timer was refreshed in main.

/*******************************************************************************
* @brief    Main
* @return   The point of no main
*******************************************************************************/
int main()
{
    ...
    while(1u)
    {
      ...
      WD_Ctr = WD_TIMEOUT;
    }
}

Downloads

Interruption Tester 0.1d PSoC Project