arduino uno wifi firmware upgrade

Juraj · October 4, 2019, 7:51am

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jandrassy/UnoWiFiDevEdSerial1/blob/master/README.md

# UNO WiFi (Developer Edition) Serial1

Arduino UNO WiFi is an Arduino UNO R3 with ESP8266 integrated on the board. It was developed and manufactured by Arduino.org. More information in [UNO WiFi Wiki](https://github.com/jandrassy/UnoWiFiDevEdSerial1/wiki).

UNO WiFi Developer Edition connects ATmega328 to ESP8266 using additional on board UART chip SC16IS750. This additional UART is connected to ATmega as I2C device.

This library creates a Serial1 object with SC16IS750 on Arduino UNO WiFi Developer Edition. This Serial1 enables to communicate with the on-board ESP8266 over it's serial interface. The included tool EspProxy enables accessing the on-board ESP8266 over USB for 'flashing' tools, IDE sketch upload or Serial Monitor.

The release version of the library is available in Library Manager in IDE.

Use for:
* [UNO WiFi with Espressif AT firmware](#uno-wifi-with-espressif-at-firmware)
* [UNO WiFi with WiFi Link firmware](#uno-wifi-with-wifi-link-firmware)
* [write sketches for ESP8266 with Firmata in ATmega](#writing-sketches-for-esp8266).

## UNO WiFi with Espressif AT firmware

### Prepare

Download the AT firmware from [Espressif download page](http://espressif.com/en/support/download/at?keys=&field_type_tid%5B%5D=14) and unzip it. Replace the esp_init_data_default.bin with [this one](https://github.com/jandrassy/UnoWiFiDevEdSerial1/wiki/files/esp_init_data_UnoWiFi.bin). It has the 40MHz crystal setting.

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arduino uno wifi firmware upgrade

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