ESP32 Forum

@ESP_igrr

Hi,

I have seen your answer in this reply: viewtopic.php?t=6855#p29440.
In it you say it is simple to replace the standard brownout ISR via menuconfig, can you supply some more details on how to do that exactly ?
I have located the standard code, both on GITHUB and in the current ESP-IDF but I could not find anything in menuconfig to make it execute a different piece of code, all I found via menuconfig was how to set the brownout level ,nothing else. So I guess I must be overlooking it.

Any help much appreciated.

It suggests to turn brownout off in menuconfig and do the rest in code. In the other topic you can see the function brownout_init posted by maldus

Hi,

I have figured it out: the exact entry in menuconfig is "Hardware brownout detect & reset" under "ESP-32-specific" under "component-config". Setting that to blank eliminates the call to "esp_brownout_init();" in "cpu_start.c". After that it is simple: duplicate the functionality of "esp_brownout_init();" and reroute the ISR to your own code.

Hope this is useful for someone.