How to use watchdog COP

albert_zhou · ‎11-19-2018

I tried to use COP watchdog but it does not work. somebody can tell me why? I used UART command to get it in a while loop, the system get into a hanging state -no pulse output.

Here is my code:

void ResetWatchDog(void)
{
SIM->SRVCOP =0x00000055U;
SIM->SRVCOP =0x000000AAU;
}

int main(void)
{

SIM->COPC =0x0000003CU; //enable COP watchdog set to 1.024 second, 1KHz as clock source

...

....

while(1)

{

pulse(toggle);

ResetWatchDog();

.....

}

I not know where to get the COP setup correctly.

Albert

victorjimenez · ‎11-23-2018

Hello Albert,

Could you please tell me which MCU are you using?

Regards,

Victor.

albert_zhou · ‎11-26-2018

Hi Victor,

I am using MKL27Z64VFM4 mcu. I find problem for the watchdog enable problem. I put a line above DISABLE_WDOG in file system_MKL27Z64xxx4.h as below. Thanks.

#define DISABLE_WDOG 0 //added by Albert Zhou 11-19-2018 for use watchdog timer

#ifndef DISABLE_WDOG

#define DISABLE_WDOG 1

#endif

Albert Zhou

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Sensorex

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victorjimenez · ‎11-27-2018

Hello Albert,

I recommend you to download the SDK for the FRDM-KL27Z. In this example you will find a example project for the COP watchdog. You can use this example as a guide to see what you are missing in your project.

Link to download the SDK.

Hope it helps!

Victor.

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albert_zhou · ‎11-27-2018

Hi Victor,

Yes, I will do. I started with SDK FRDM-KL27Z.

I am going to utilize the ROM bootloader. I need to setup the bootloader preset for LPUART0. So I just need to interface with LPUART0 (pin11, pin 12 of MKL27Z64VFM4 ). Is that right?

The load file must be binary (.bin) only?

I have done something like loader before. The file is .hex, I can load it one line by online because there is line check for hex file and end file indication.

How to use the .bin file for bootloader handling since I could not read the file?

What is the size of one pack? I have a firmware file of 50K bytes.

Best regards,