1.3 CCP Compare Mode
This example shows how to use the CCP module in compare mode to generate an dual edge, active high, and toggle output on compare match.
Description
Three TC channels are configured in compare mode. Each channel generates different output waveform depending upon configured action on compare match and period match.
- Dual Edge output: Output is set high on compare A match and is set low on compare B match.
- Active high output: Output is set high on compare A match and remains high.
- Toggle output: Output toggles on compare A match.
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/ccp/ccp_compare_mode/firmware.
To build the application, refer to the following table and open the project using its IDE.
| Project Name | Description |
|---|---|
| pic32mm_usb_curiosity.X | MPLABX project for PIC32MM USB Curiosity board |
Setting up the hardware
The following table shows the target hardware for the application projects.
| Project Name | Description |
|---|---|
| pic32mm_usb_curiosity.X | PIC32MM USB Curiosity board |
Setting up PIC32MM USB Curiosity Board
- Connect micro USB cable to the 'USB1' connector on the board to the computer
Running the Application
- Build and program the application project using its IDE
- Observe generated waveforms on the oscilloscope
| OC Pin | Port Pin | Observable characteristic of the waveform |
|---|---|---|
| OCM1A | RA12 (Pin on J12) | Dual Edge output with 5 kHz frequency |
| OCM4 | RA7 (Pin on J12) | Active high output |
| OCM2D | RB1 (Pin on J4) | Toggle output with 2.5 kHz frequency |