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Код: Выделить всё

void ds18b20Exe() {
  static uint16_t state;
  static uint16_t timer;
  static uint16_t temp;
  
  if (timer) 
    --timer;
  else
    switch (state) {
      case 0:
        if (!dsReset())
          break;
        next(state);
        
        dsByte(SKIP_ROM);
        next(state);
        
        dsByte(READ_SCRATCHPAD);
        next(state);
        
        temp = dsByte(0xff);
        next(state);
        
        temp |= dsByte(0xff)<<8;
        temperature = ds2cels(temp);
        next(state);
        
        if (!dsReset()) {
          state = 0;
          break;
        }
        next(state);
        
        dsByte(SKIP_ROM);
        next(state);
        
        dsByte(CONVERT_T);
        timer = ms2sys(CONVERTION_TIME);
        state = 0;
        break;
    }
}