1.15 GPIO Polling
This example application demonstrate how to poll the switch input, and indicate the switch status using the LED.
Description
This application uses the GPIO Peripheral library to read the GPIO pin connected to the switch, and drives the GPIO pin connected to the LED to indicate the switch status. The LED is turned ON when the switch is pressed and turned OFF when the switch is released.
Downloading and Building the Application
To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.
Path of the application within the repository is apps/gpio/gpio_led_on_off_polling/firmware.
To build the application, refer to the following table and open the project using its IDE.
Project Name | Description |
---|---|
pic32mk_gp_db.X | MPLABX project for PIC32MK GP Development Kit |
pic32mk_mcj_curiosity_pro.X | MPLABX project for PIC32MK MCJ Curiosity Pro Board |
pic32mk_mcm_curiosity_pro.X | MPLABX project for PIC32MK MCM Curiosity Pro Board |
pic32mk_mca_curiosity_pro.X | MPLABX project for PIC32MK MCA Curiosity Pro Board |
Setting Up the Hardware
The following table shows the target hardware for the application projects.
Project Name | Description |
---|---|
pic32mk_gp_db.X | PIC32MK GP Development Kit |
pic32mk_mcj_curiosity_pro.X | PIC32MK MCJ Curiosity Pro Board |
pic32mk_mcm_curiosity_pro.X | PIC32MK MCM Curiosity Pro Board |
pic32mk_mca_curiosity_pro.X | PIC32MK MCA Curiosity Pro Board |
Setting Up PIC32MK GP Development Kit
- Connect the Debug USB port on the board to the computer using a micro USB cable
Setting Up PIC32MK MCJ Curiosity Pro Board
- Connect the Debug USB port (J1) on the board to the computer using a micro USB cable
Setting Up PIC32MK MCM Curiosity Pro Board
- Connect the Debug USB port (J500) on the board to the computer using a micro USB cable
Setting Up PIC32MK MCA Curiosity Pro Board
- Connect the Debug USB port (J1) on the board to the computer using a micro USB cable
Running the Application
- Build and program the application project using its IDE
- LED is turned ON when the switch is pressed and turned OFF when the switch is
releasedFollowing table provides Switch and LED names:
Board Switch Name LED Name PIC32MK GP Development Kit S2 LED2 PIC32MK MCJ Curiosity Pro Board SW200 LED2 PIC32MK MCM Curiosity Pro Board SW1 LED1 PIC32MK MCA Curiosity Pro Board SW200 LED1