I have an esp32 and suddenly when connecting to gpio 12 a cable dupont to negative protoboard line and then i connect the cable usb to my pc the led tx starts to blink fast and it doesnt stop and if i try to upload a sketch it shows an error.. if i connect the same cable but now different gpio ... like 13...5 etc.. esp32 works normally..
i think esp32 is tranferring data to my pc from gpio 12 but only when connect the dupont cable and then the usb to my pc..
but if i change gpio 12 to 13 (connect a dupont cable to protoboard) and then the usb to my pc the esp32 doesnt blink the tx and i can work normally..
i want to know what is the issue.. maybe if i reset the esp32 it will work normally if i use gpio12.. but more than solve the problem i know what the issue is? and understand the issue.. maybe there is a way to know whats wrong with esp32.. or maybe is the line where pin12 is on the protoboard
thanks in advance.
ESP32 blinking TX led when connect dupont cable to negative protoboard line
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Re: ESP32 blinking TX led when connect dupont cable to negative protoboard line
GPIO12 is a bootstrap line that changes the flash voltage depending on its level on reset. That may have caused this.
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