40 lines
1.8 KiB
Markdown
40 lines
1.8 KiB
Markdown
# arduino-blume
|
|
**Me**asure analog signal using an Arduino and **Blu**etooth communication.
|
|
This program was written for (and tested with) the **Arduino RP2040 Connect**.
|
|
|
|
[m-teng](https://github.com/MatthiasQuintern/m-teng) has a backend that can connect to the Arduino.
|
|
|
|
## Configuration
|
|
See `settings.hpp` for which pin needs to be connected.
|
|
The program uses 3 leds for displaying device status, however these are optional.
|
|
|
|
## Installation
|
|
```
|
|
git clone https://github.com/MatthiasQuintern/arduino-blume
|
|
arduino-cli compile --profile nanorp
|
|
arduino-cli upload --profile nanorp
|
|
```
|
|
|
|
## Communication via Bluetooth
|
|
The Arduino will advertise a Bluetooth Low Energy service which can be used to interact with the device.
|
|
|
|
Service UUID: `00010000-9a74-4b30-9361-4a16ec09930f`
|
|
|
|
0. status (`uint8_t`, `rn`): `00010001-9a74-4b30-9361-4a16ec09930f`
|
|
- `0`: **ERROR**: error occured: invalid command received, can not advertise Bluetooth service, etc.
|
|
- `1`: **BUSY**
|
|
- `2`: **WAIT_CONNECT**: waiting for Bluetooth connection
|
|
- `3`: **CONNECTED**: connected, waiting for command
|
|
- `4`: **MEASURING**: connected, measurement running
|
|
1. command (`uint8_t`, `rw`): `00010002-9a74-4b30-9361-4a16ec09930f`
|
|
send a command to the arduino:
|
|
- `0` - **STOP**: stop active measurements
|
|
- `1` - **MEASURE_COUNT**: measure *count* measurements with *interval* *see `count` and `interva` below*
|
|
- `2` - **MEASURE**: measure with *interval* until interrupted *see `count` below*
|
|
2. reading (`uint16_t` `rn`): `00010003-9a74-4b30-9361-4a16ec09930f`
|
|
the reading from the Arduinos analog pin
|
|
3. count: (`uint16_t`, `rw`): `00010004-9a74-4b30-9361-4a16ec09930f`
|
|
set the number of measurements to take with `MEASURE_COUNT`
|
|
4. interval: (`uint16_t`, `rw`): `00010005-9a74-4b30-9361-4a16ec09930f`
|
|
set the interval between measurements in ms
|