1000 B
Self-made chiller control system
UART: 115200N1, not more than 100ms between data bytes in command To turn ON human terminal (without timeout) send "####"
Protocol: [ command line ] '[' clears earlier input '\n', '\r', ' ', '\t' are ignored All messages are asynchroneous!
Commands: Ax - turn on(x=1)/off(x=0) external alarm or check its value Cx - set cooler PWM to x d - (only when EBUG defined) go into debug commands F - get flow sensor rate for 5s period Hx - set heater PWM to x L - check water level sensor value Px - set pump PWM to x R - reset MCU Tx - get NTC temperature for channel x t - get MCU temperature V - get Vdd value *100V
Debugging commands: A - show raw ADC value (next letter is index, 0..5) F - get flow_cntr value & PB state T - show raw T values w - test watchdog
Messages: MCUTEMP10=x - mcu temperature * 10 (degrC) SOFTRESET=1 - software reset occured (msg @ start) VDD100=x - Vdd*100 (V) WDGRESET=1 - watchdog reset occured (msg @ start)