Hi, I have ESP32 from WeMos. Using uart0 for DEBUG thourgh USB. I configured uart1 to GPIO4(RX), GPIO2(tx). Plugged uart1 to USB serial converter. Both uarts running at 115200bps. Uart1 should work as communication betweern AI Thinker A7 (GSM module). I'm basicly trying to write "AT\r". What I can s...

Hi, I have code posted on pastebin: https://pastebin.com/jpsBRS4d I used arduino sketch to test if matrix works, it works. But i'd like to use espidf instead arduino. My problem is that I can read only first two rows, third, fourth acts like they werent available or something... Using basic 4x4 keyp...