Skip to content

esp_now_iot

Directory actions

More options

Directory actions

More options

Latest commit

 

History

History

esp_now_iot

README.md

ESP8266 ESPNOW (Old version)

ESP ESP-NOW Networking

A pure FreeRTOS-SDK version

Features

  • WiFi
  • ESP-NOW
  • OTA Updates
  • JSON Command Parser

In this case we can setup peer-to-peer connecion throuth 2.4GHz and send packets with size less than 250 bytes
ESP-NOW protocol can be used without wifi connection
ESP-NOW Features

  • Multicast (non-encrypted / encrypted data)
  • Broadcast (non-encrypted data)
  • Peer add / remove | up to 20 peers

Example

[{ "to": "AB:CD:EF:A1:B2:C3" "digitalRead": { "pin": 32 } }] // Read pin state on board with MAC AB:CD:EF:A1:B2:C3;
[{ "to": "AB:CD:EF:A1:B2:C3" "digitalWrite": { "pin": 32, "value": 0 } }] // Turn on 32 pin on board with MAC AB:CD:EF:A1:B2:C3;

support double commands

[{ "to": "AB:CD:EF:A1:B2:C3" "digitalWrite": { "pin": 33, "value": 0 } }, { "to": "AB:CD:EF:A1:B2:C3" "digitalWrite": { "pin": 32, "value": 0 } }]
[{ "to": "AB:CD:EF:A1:B2:C3" "digitalWrite": { "pin": 33, "value": 1 } }, { "to": "AB:CD:EF:A1:B2:C3" "digitalWrite": { "pin": 32, "value": 1 } }]
// only if JSON data length less than 200 bytes

Errata

1. Print cJSON number variables causes Guru Meditation :D;  
    FIX: Need to disable "nano" formatting in menuconfig;  
    make menuconfig -> Component config -> Newlib -> "nano" formatting  

2. UART data sending only in non separated format;  
    i will make a buffer concatenator (maybe later XD);  
    echo -en '\x12\x02[{"to":"34:94:54:62:9f:74","digitalWrite":{"pin":2,"value":2}}]' > /dev/ttyUSB1

WARNING

1. OTA Updates possible only if your partitions setup correctly  
    it need to contains `ota_0` and `ota_1` partitions