MSX ESP8266

ESP WiFi & 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 of 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

ESP-NOW example

Basics

// Read pin state on board with MAC AB:CD:EF:A1:B2:C3;

[{ "to": "AB:CD:EF:A1:B2:C3" "digitalRead": { "pin": 32 } }]

// Turn on 32 pin on board with MAC AB:CD:EF:A1:B2:C3;

[{ "to": "AB:CD:EF:A1:B2:C3" "digitalWrite": { "pin": 32, "value": 0 } }]

Support double commands

Note: only if JSON data length less than 200 bytes

[{ "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 } }]

OTA

Note: OTA Updates possible only if your partitions setup correctly
Make sure that your partitions.csv contains OTA.
make menuconfig > Partition Tables

Name	Type	SubType	Offset	Size	Flags
*
ota_0	0	ota_0	0x10000	0xF0000

Update example

curl 192.168.1.101:8066/update --no-buffer --data-binary @./build/msx.bin --output -

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