hardware serial ports

  1. janderkan

    B4R Question Error after updating ESP32 boards

    My code is working fine using ESP32 boards version 1.0.6, but after upgrading to version 2.0.0 I get the following error when initializing second hardware serial port, E (64) uart: uart_set_pin(595): tx_io_num error ESP_ERROR_CHECK failed: esp_err_t 0xffffffff (ESP_FAIL) at 0x4008ba60 file...
  2. janderkan

    B4R Code Snippet ESP32 hardware serials on TTGO Lora board

    Following these instructions you have access to the 3 hardware serials on an ESP32. Serial0 is connected to the USB interface. The default pins are Serial0 - RX: GPIO3 , TX: GPIO1 Serial1 - RX: GPIO9 , TX: GPIO10 Serial2 - RX: GPIO16 , TX: GPIO17 On a TTGO Lora board the GPIO 9,10,16,17 are...