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Update uart_communication.md #374

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Jan 3, 2023
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Update uart_communication.md #374

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8 changes: 6 additions & 2 deletions docs/development/uart_communication.md
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,7 @@ Once everything is set up you should be able to control the Crazyflie via UART.
Add the parameter `enable_serial_driver=True` to `cflib.crtp.init_drivers()` and connect to the Crazyflie using a serial URI.
The serial URI has the form `serial://<name>` (e.g. `serial://ttyAMA0`, `serial://ttyUSB5`) or if the OS of the controlling device does not provide the name `serial://<device>` (e.g. `serial:///dev/ttyAMA0`).

The following script might give an idea on how a first test of the setup might look like.
The following script might give an idea on how a first test of the setup might look like to print the console output of the Crazyflie on the Raspberry pi

```python
#!/usr/bin/env python3
Expand All @@ -63,6 +63,7 @@ import logging
import time

import cflib.crtp
from cflib.crazyflie import Crazyflie
from cflib.crazyflie.syncCrazyflie import SyncCrazyflie
from cflib.positioning.motion_commander import MotionCommander

Expand All @@ -78,6 +79,8 @@ def console_callback(text: str):
if __name__ == '__main__':
# Initialize the low-level drivers including the serial driver
cflib.crtp.init_drivers(enable_serial_driver=True)
cf = Crazyflie(rw_cache='./cache')
cf.console.receivedChar.add_callback(console_callback)

with SyncCrazyflie(URI) as scf:
print('[host] Connected, use ctrl-c to quit.')
Expand All @@ -87,4 +90,5 @@ if __name__ == '__main__':

## Troubleshooting

If you see the a `CRC error` when running the script, make sure to install the cflib from source.
* If you see the a `CRC error` when running the script, make sure to install the cflib from source.
* If the script hangs with connecting, restart the crazyflie