Serial Protocol

Coffee Roaster Serial Protocol  
         
Commands are sent to the Arduino. Responses come from the Arduino.  
A response is sent after every command.  
A command to set the heater or fan value is ignored and no response is sent if the command mode is Manual


  
    Serial Characters Description  
Command Set control mode : Start character  
    > Set command  
    C or M Computer or Manual  
    / End character  
         
Response Control mode : Start character  
    C or M Computer or Manual  
    / End character  
         
Response Unknown command : Start character For any unrecognized command
    U Unknown
    / End character
         
Command Read control mode : Start character  
    ? Read command  
    C Control mode  
    / End character  
         
Response Control mode See above    
         
Command Read temperature : Start character  
    ? Read command  
    T Temperature  
    / End character  
         
Response Temperature : Start character  
    T Temperature  
    0-9 Digit 1 Temperature in degrees C
    0-9 Digit 2
    0-9 Digit 3
    . Decimal point
    0-9 Digit 4
    0-9 Digit 5  
    / End character  
         
Command Set Heater : Start character  
    > Set command  
    H Heater  
    0-9 Digit 1 0-100%
    0-9 Digit 2
    0-9 Digit 3
    / End character  
         
Response Heater Value : Start character  
    H Heater  
    0-9 Digit 1 0-100%
    0-9 Digit 2
    0-9 Digit 3
    / End character  
         
Command Read Heater : Start character  
    ? Read command  
    H Heater  
    / End character  
         
Response Heater Value See above    
         
Command Set Fan : Start character  
    > Set command  
    F Fan  
    0-9 Digit 1 0-100%
    0-9 Digit 2
    0-9 Digit 3
    / End character  
         
Response Fan Value : Start character  
    F Fan  
    0-9 Digit 1 0-100%
    0-9 Digit 2
    0-9 Digit 3
    / End character  
         
Command Read Fan : Start character  
    ? Read command  
    F Fan  
    / End character  
         
Response Fan Value See above