Running Demo Code

To run the demo code, perform the following on VisionFive 2 Debian:

Locate to the directory where the test code, pwm_led.py, exists:
1. Execute the following command to get the directory where VisionFive.gpio exists:
```
pip show VisionFive.gpio
```
  Example Result:
```
Location: /usr/local/lib64/python3.9/site-packages
```
  Note:
  The actual output depends on how the application is installed.
2. Execute the following to enter the directory, for example, /usr/local/lib64/python3.9/site-packages as indicated in the previous step output:
```
cd /usr/local/lib64/python3.9/site-packages
```
3. Execute the following command to enter the sample-code directory:
```
cd ./VisionFive/sample-code/
```
Under the sample-code directory, execute the following command to execute the demo code:
```
sudo python pwm_led.py
```
Alternatively, you can execute the following command:
```
sudo python3 pwm_led.py
```
Result:
The LED blinks and the blink frequency will change according to the PWM frequency.