adc2_vref_to_gpio cause 3.6V on GPIO pin
Posted: Tue May 29, 2018 1:21 pm
Hi all,
I used the code
to measure Vref on GPIO 25-27. I got 3.6V on multimeter. What's wrong with that?
I checked couple esp32-bit chips. And multimeter is OK.
I used the code
Code: Select all
status = adc2_vref_to_gpio(GPIO_NUM_27);
if (status == ESP_OK){
printf("v_ref routed to GPIO\n");
}else{
printf("failed to route v_ref\n");
}
I checked couple esp32-bit chips. And multimeter is OK.