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arduino-libraries / WiFiLink-Firmware

Arduino WiFi Link firmware for ESP8266 based boards
MIT License
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Uno Wifi Dev Ed highspeed MCU Serial to ESP Serial, if you don't need USB and Serial Monitor #34

Open JAndrassy opened 7 years ago

JAndrassy commented 7 years ago

The Uno WiFi Dev Ed hack uses the MCU OTA programming connection of the board. If ESP pin 4 is LOW, the junction switches the serial of the ESP from SC16IS750 to Serial of the MCU. On the MCU side I modified a copy of the WiFi Link library to use Serial (excluding SC16IS750). The baudrate can then be set higher in source code on both sides.

void setup() { // of ArduinoFirmwareEsp.ino
  pinMode(4, OUTPUT);
  digitalWrite(4, 1);
  delay(100);
  digitalWrite(4, 0);

schema

JAndrassy commented 6 years ago

I made the SC16IS750 driver fast Serial1. Bypassing it is still useful if you want save ATmega memory.