peacemaker Expert Licensed User Longtime User May 11, 2021 #1 Hi, All How most easy to use second UART of ESP8266, without touching the default Serial-to-USB of boards ? It's needed for UART sensor boards. I have found that there is some port swap possibility - just swap Serial to Serial1 after FW flashing from USB. B4X: Serial.begin(9600, SERIAL_8N1); //GPIO1 (TX) and GPIO3 (RX), 9600kbps, 8-bit data, no parity, 1-bit stop //your brilliant code here Serial.swap(); //GPIO15 (TX) and GPIO13 (RX) Serial.flush(); //clear serial buffer //your brilliant code here Anyone tried ? Any B4R code example ?
Hi, All How most easy to use second UART of ESP8266, without touching the default Serial-to-USB of boards ? It's needed for UART sensor boards. I have found that there is some port swap possibility - just swap Serial to Serial1 after FW flashing from USB. B4X: Serial.begin(9600, SERIAL_8N1); //GPIO1 (TX) and GPIO3 (RX), 9600kbps, 8-bit data, no parity, 1-bit stop //your brilliant code here Serial.swap(); //GPIO15 (TX) and GPIO13 (RX) Serial.flush(); //clear serial buffer //your brilliant code here Anyone tried ? Any B4R code example ?
peacemaker Expert Licensed User Longtime User May 12, 2021 #2 OK, used SoftwareSerial lib with free GPIO13 and GPIO2 pins, avoiding GPIO1 and GPIO15 that used during flashing. Upvote 0
OK, used SoftwareSerial lib with free GPIO13 and GPIO2 pins, avoiding GPIO1 and GPIO15 that used during flashing.
