possible to add power usage?

[mathias172]

Hi, is it possible, to add getting power usage info?

Here is some info. There is a function

float PropertiesFrame::get_power_usage() const {
  uint32_t power = 0;
  const uint8_t *ptr = this->pbuf_ + 28;
  for (uint32_t weight = 1;; weight *= 10, ptr--) {
    power += (*ptr % 16) * weight;
    weight *= 10;
    power += (*ptr / 16) * weight;
    if (weight == 100000)
      return static_cast<float>(power) * 0.1;
  }
}

And the request data:

const uint8_t PowerQueryFrame::INIT[] = {0xAA, 0x22, 0xAC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x41, 0x21,
                                         0x01, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                                         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x17, 0x6A};

[Links2004]

sure with some work its possible, need to play with my AC if its supports this command.
and then start to understand what the code tries to do, the calculation looks a bit strange a the first look.
if its not supported then I will need sample data. the more then better ;)

next question is how good the data is, but that something i can see easy since I have a smart meter connected to the ACs I use.

[mathias172]

That would be awesome.