06/16/2020 16:33:10 Temperature: 26.2
06/16/2020 16:33:21 Temperature: 26.2
06/16/2020 16:33:23 Temperature: 26.2
06/16/2020 16:33:34 Temperature: 26.2
06/16/2020 16:33:36 Temperature: 26.2

#!/usr/bin/python3
'''
Example:
python3 ./odtemp-mon.py
'''
from time import sleep
import serial


def run():
    port = '/dev/ttyACM0'
    ser = serial.Serial(port)
    while True:
        ser.write(b'~G')
        ser_data = ser.readline()
        if ser_data:
            data = ser_data.decode("utf-8")
            print('Read from serial (repl to ~G): {0}'.format(data.strip()))
            if data.startswith('~G'):
                print('Temperature is {0}'.format(float(data[2:])))
        else:
            print('sensor error')
        sleep(1)


if __name__ == "__main__":
    run()

//Main settings
#define SEND_PERIOD_MS 60000
#define STEP_DELAY_MS 200
#define RUN_MODE 1

//global vars
var t_answ = ["~GEEE\n", "~G%d\n", "~G0%d\n", "~G00%d\n", "~G000%d\n"];

var io_setup() {
    UART0.CFG = UART_MODE_PLAIN | UART_CONFIG_START;
    DS18.INIT = DS18_PORT_B|8;
    __enable_irq();
}

var get_temp()
{  
  if(DS18.INIT == 1)
  {
    DS18.VALUE = 1;
    delay(100);
    return DS18.VALUE-2730; //K -> C
   }else
   return 0xFFFF; //Error
}

var temp_sender(var temp) {
    var idx = 4;
    if (temp>1280) { idx = 0; }
    else if (temp>1000) { idx = 1; }
    else if (temp>100) { idx = 2; }
    else if (temp>10) { idx = 3; }
    sprintf(&UART0.TX, t_answ[idx], temp); 
}

var _msg() {
    if(MSG.PORT == 4) {
        memcpy(&RING.BUF, &MSG.RX, MSG.SIZE);       
    }
}

var temp_perioder()
{
    temp_sender(get_temp());
    timer(SEND_PERIOD_MS, temp_perioder);
}

var main() {
    var c, temp;
    var pstate = 0;
    
     if((RING.ALLOC = 16) != 16) {
        return 1;
    }

#if RUN_MODE
    timer(SEND_PERIOD_MS, temp_perioder);    
#endif
    io_setup();
    SYS.WDG = 1;
    while(1)
    {
        SYS.WDG = 42;
        if(RING.QUEUE > 0) {
           c = RING.PULL;
           if (c == '~') {pstate = 1;}
           else {
              pstate = 0;
              switch (c) {
                case 'G':
                    temp_sender(get_temp());
                    break;
                default:
                    break;
              }
           }
        }else {
            delay(STEP_DELAY_MS);
        }    
    }
    return 0;
}