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+# Gateway 2.000
+
+This is the FDRS Multiprotocol Gateway sketch. The device listens for packets over ESP-NOW, UART, LoRa, and/or WiFi, 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 packet it receives and output the data over the serial port (UART):
+```
+#define ESPNOW1_ACT    sendSerial();
+#define ESPNOW2_ACT    sendSerial();
+#define ESPNOWG_ACT    sendSerial();
+#define SERIAL_ACT     
+#define MQTT_ACT       sendSerial();
+#define LORA_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 ESPNOW1_ACT  
+#define ESPNOW2_ACT  
+#define ESPNOWG_ACT  
+#define SERIAL_ACT   sendMQTT();
+#define MQTT_ACT     sendSerial();
+#define LORA_ACT     sendSerial();
+```
+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 you will set the ESPNOW1 address to that of your first gateway, then you'll direct general ESP-NOW traffic to the ESPNOW1 interface:
+```
+#define UNIT_MAC     0x01  // THIS UNIT
+#define ESPNOW1_MAC  0x00  // ESPNOW1 Address 
+#define ESPNOW2_MAC  0x02  // ESPNOW2 Address
+
+#define ESPNOW1_ACT  sendESPNOW(2);
+#define ESPNOW2_ACT  sendESPNOW(1);
+#define ESPNOWG_ACT  sendESPNOW(1);
+#define SERIAL_ACT   
+#define MQTT_ACT     
+#define LORA_ACT  
+```