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sandeepmistry / arduino-LoRa

An Arduino library for sending and receiving data using LoRa radios.

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esp32 lora endpacket stuck

matg41 opened this issue · comments

commented

Hello.
I am using a lora-ra2 sx1278 433 MHz and ESP32 to read the state of a GPIO (27) and send to a gateway. When I put the GPIO in input pull-up, the program stuck in lora.endpacket(). Also when I put it on input mode and connect it to gnd on ESP, I get the same problem.
I solved it by using a 5v power supply and connect the GPIO to gnd and vcc of it. The problem is solved.
However, I did not manage to understand the problem.

The board is ESP-WROOM-32.
Thanks!

commented

What's GPIO27 connected to? If it's a sensor or other similar device, it needs to share a ground line with the ESP32.

commented

What's GPIO27 connected to? If it's a sensor or other similar device, it needs to share a ground line with the ESP32.

It is connected to the emitter of a transistor which is activated by a 12V signal from a driver. The collector is connected to the 5V power supply. The GPIO27 is also connected (with a 5KOhm resistor) to the GND of 5V power supply. I use the same power supply to turn on my ESP32.