Evaluating the CO2-Sensor S8 from SenseAir.
Code for Arduino with some routines to read all register.
There is no standard library aviable now - since the functionality / documentation is poor.
Send a request like {0xFE, 0X04, 0X00, 0X03, 0X00, 0X01, 0XD5, 0XC5} and
wait for the response like {0xFE, 0X04, 0X02, 0X03, 0X88, 0XD5, 0XC5}.
Where:
| byte | example | description |
|---|---|---|
| 0 | 0xFE | any Address |
| 1 | 0x04 | function code (03 read hold reg / 04 read inp. register / 06 write) |
| 2, 3 | 0x00 0x03 | starting Address |
| 4, 5 | 0x00 0x01 | lenght of requested register |
| 6, 7 | 0xD5 0xC5 | CRC low / high |