Farm-Data-Relay-System/FDRS_Gateway2000

Gateway 2.000

This is the FDRS Multiprotocol Gateway sketch. The device listens for packets over ESP-NOW, UART, LoRa, and/or MQTT, then retransmits the packets over these interfaces using rules defined in the configuration file.

The most commonly used configuration tells the device to take any ESP-NOW packet it receives and output the data over the serial port (UART):

#define UNIT_MAC       0x00
#define ESPNOWG_ACT    sendSerial();

The companion for this device, connected via serial, takes any data it receives from the serial port and sends it via MQTT:

#define USE_WIFI
#define SERIAL_ACT   sendMQTT();

Splitting the gateway into two devices allows you to use ESP-NOW and WiFi simultaneously without channel conflicts. You can also connect the first device to a computer with a USB-UART adapter and get the data that way, eliminating WiFi altogether.

If you have sensors that are out of range of your first gateway, you can use a gateway as a repeater. First set the UNIT_MAC to 0x01, then send general ESP-NOW traffic to the address of the first gateway:

#define UNIT_MAC     0x01 
#define ESPNOWG_ACT  sendESPNOW(0x00);