ESP-NOW-C3

Using the ESP-NOW Long Range P2P with the ESP32-C3 and publish the data in the MQTT

This example is used for ESP-NOW data communication. The device read the internal temperature port and transparently broadcasts it to the node master.

The master device that receives the data connect to Wi-Fi and send to topic of the MQTT, "MAC/value"

Note: This repository run in anyone ESP32 family, modify this example to running another device!

Configuration

To run this example, at least two development boards are required to test the communication between the two devices

• Modify the configuration You can modify the app_main.c directly to configure

In master device configure!

#define EXAMPLE_ESP_WIFI_SSID      "default"
#define EXAMPLE_ESP_WIFI_PASS      "default"
#define EXAMPLE_ESP_MAXIMUM_RETRY  5
#define EXAMPLE_ESP_MQTT_BROKER     "mqtt://broker.hivemq.com"
#define EXAMPLE_ESP_MQTT_USER       ""
#define EXAMPLE_ESP_MQTT_PASS       ""

In slave device configure! Set the same Wi-Fi channel of the ESP Master

#define WIFI_CHANNEL 11

Build and Flash firmware

$ git clone https://github.com/TeschRenan/ESP-NOW-C3
$ cd ESP-NOW-C3
$ idf.py set-target esp32C3
$ idf.py erase_flash
$ idf.py flash monitor

Resources

• ESP-NOW API guide
• ESP-NOW Repository
• ESP-Wi-Fi API Guide