1.22 OCMP Compare Mode
This example application shows how to use the OCMP peripheral to generate an active low, active high, and toggle output on compare match.
Description
In this application, three OCMP modules are used to generate waveforms.
Active Low Output: By default output is set as high and it is set as low on the compare match
Active High Output: By default output is set as low and it is set as high on the compare match
Toggled Output: Compare match toggles the output
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/ocmp/ocmp_compare_mode/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 (J12) 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 on the board to the computer using a micro USB cable
Running the Application
- Build and program the application project using its IDE
- Observe active low, active high and toggle output on the oscilloscope
Refer the following table for pin details:OCMP output PIC32MK GP Development Kit pins PIC32MK MCJ Curiosity Pro Board pins PIC32MK MCM Curiosity Pro Board pins PIC32MK MCA Curiosity Pro Board pins OC1 output RPA0 “Pin 4 of J29” RPA0 “Pin 3 of J501” RPA0 “Pin 1 of J300” RPA11 “Pin 5 of J601” OC2 output RPA14 “Pin 5 of J31” RPA1 “Pin 3 of J502” RPA14 “Pin 11 of J302” RPB1 “Pin 9 of J601” OC3 output RPB0 “Pin 8 of J29” RPB14 “Pin 7 of J501” RPB0 “Pin 6 of J300” RPB0 “Pin 11 of J601”