Running Demo Codes

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

Locate to the directory where the test code, edge_detection_with_waiting_time.py, exists:
1. Execute the following command to get the directory where VisionFive.gpio exists:
```
pip show VisionFive.gpio
```
  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 edge_detection_with_waiting_time.py

Alternatively, you can execute the following command:

sudo python3 edge_detection_with_waiting_time.py

Result:

The terminal displays as follows:

# python3 edge_detection_with_waiting_time.py 
*-----------------------Case 1-----------------------------------------------------*
Note: don't press the key on pin 37 once within 5 seconds !!!

After waiting for 5 seconds, the terminal displays as follows:

Edge hasn't been detected within 5 seconds  while setting 5 seconds to timeout.
The return value of GPIO.event_detected(37) within 5 seconds: False

*-----------------------Case 2-----------------------------------------------------------------------*
Please press the key on pin 37 once at any time !!!

Finally press the button, and the terminal displays as follows:

Edge has detected while setting -1 to timeout,
timeout -1 means waiting until edge is detected.

The return value (True) of GPIO.event_detected(37) should be True.
The return value (False) of GPIO.event_detected(37) should be False, because of the secondly reading.