PiZero > Communication protocol v0.12 > PiZero / ESP8266

This article is for my entry to Pi Zero contest 2016.
https://hackaday.io/project/9526-bring-your-own-pizero-byop

format

• Terminating with <LF>
• 115200 8N1
  • 8 data bits
  • no parity
  • 1 stop bit

user commands

• hello
  • command: hello,[serial number],[name]<LF>
  • return: hello,[name]<LF>
• check
  • command: check<LF>
  • return: check,[number of messages]<LF>
• get
  • command: get<LF>
  • return: get,[SenderName],[1st message string],[isSecret(0|1)],[postDate]<LF>
  • memo: get command takes 2000 msec wait to show the sender on 8x2 LCD before showing the message
• post
  • command: post,[receiver],[message],[isScret(0|1)],[postDate]<LF>
  • return: post,ok<LF>
  • lcdmsg: msg,posted
• bye
  • command: bye<LF>
  • return: bye,[name]<LF>

For the public message(isSecret==false), the message length for the post is maximum 16 (= 8x2).
For the private message(isSecret==true), the message length can have any length, because the message will not be displayed on the 8x2 LCD, but will be sent through UART.

administrator commands

• storage
  • command: storage<LF>
  • return: storage,[current usage count]/[maximum storage],<LF>
  • e.g. storage,8/200