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i have a mainboard which runs on wroom-32e (designed by someone else) and trying to get software work done by myself.

I installed Adafruit library and pasted example code. Assigned all pins according to schematics.

I get WDT error when i upload the code.

Are those pins are usable for MAX31865 module? ChatGPT says they are not, but when i checked the pinout datasheet could not see a problem, made me confused. Otherwise i will need to have that board to be designed again.

// Use software SPI: CS, DI, DO, CLK 
Adafruit_MAX31865 thermo = Adafruit_MAX31865(8, 37, 31, 30);

Thanks.

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  • Do you understand what that is? WDT is a watchdog timer error. The device has a timer to make sure the code is not hung. If you don't go tickle the watchdog register every now and then, it forces a reset. You might turn off the watchdog capability until you are closer to being ready. Commented Sep 20 at 19:36
  • Which pinout datasheet that you are checking with? As per ESP32-WROM-32E datahseet, the chip does not have GPIO37. Is that a typo or something else? Show your schematic and connection. Commented Sep 21 at 0:05
  • In the table 3, GPIO23 says no 37. Am i wrong? Commented Sep 21 at 6:17
  • SOLVED! Apparently, my pinouts were wrong. I changed to Adafruit_MAX31865(32, 23, 19, 18); and it solved. Thank you. Commented Sep 21 at 6:33
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