AM263Px MCU+ SDK: EPWM XCMP Multiple Edges

| AM263Px MCU+ SDK 26.00.00 |

EPWM XCMP Multiple Edges

# Introduction

EPWM XCMP Multiple Edges

This example uses the ePWM module to generate multiple edges in a pwm cycle.

- Three instances of epwm have been used to demonstrate the use of XCMP feature.
- For EPWMx, XCMP feature is disabled and it generates waves with duty cycle of 37.5%
- For EPWMy, XCMP feature is enabled and the only the ACTIVE set registers are used, duty cycle is 1%.
- For EPWMz, XCMP feature is enabled and the ACTIVE as well as the three SHADOW set registers are used.
  - Using shadow set 3, waves with duty cycle 50% is generated for 5 cycles for both output channels.
  - Using shadow set 2, waves with duty cycle 0% is generated for 8 cycles for both output channels.
  - Using shadow set 1, waves with duty cycle 20% for channel A and 40% for channel B is generated and this continues.

# External Connections

- For AM263PX-CC or AM261X-SOM
  - EPWM0_A and EPWM0_B pin can be connected to an oscilloscope to view the waveform.
  - EPWM1_A and EPWM1_B pin can be connected to an oscilloscope to view the waveform.
  - EPWM2_A and EPWM2_B pin can be connected to an oscilloscope to view the waveform.
- For AM263PX-LP
  - EPWM1_A and EPWM1_B pin can be connected to an oscilloscope to view the waveform.
  - EPWM2_A and EPWM2_B pin can be connected to an oscilloscope to view the waveform.
  - EPWM3_A and EPWM3_B pin can be connected to an oscilloscope to view the waveform.
- For AM261X-LP
  - EPWM2_A and EPWM2_B pin can be connected to an oscilloscope to view the waveform.
  - EPWM3_A and EPWM3_B pin can be connected to an oscilloscope to view the waveform.
  - EPWM4_A and EPWM4_B pin can be connected to an oscilloscope to view the waveform.

## AM263PX-CC or AM261X-SOM

When using AM263PX-CC or AM263PX-CC with TMDSHSECDOCK (HSEC180 controlCARD Baseboard Docking Station)

- Capture waveform on HSEC Pin 49 for epwm0_A
- Capture waveform on HSEC Pin 51 for epwm0_B
- Capture waveform on HSEC Pin 53 for epwm1_A
- Capture waveform on HSEC Pin 55 for epwm1_B
- Capture waveform on HSEC Pin 50 for epwm2_A
- Capture waveform on HSEC Pin 52 for epwm2_B

## AM263PX-LP

- Capture waveform on boosterpack header J2/J4 Pin 37 for epwm1_A
- Capture waveform on boosterpack header J2/J4 Pin 38 for epwm1_B
- Capture waveform on boosterpack header J2/J4 Pin 39 for epwm2_A
- Capture waveform on boosterpack header J2/J4 Pin 40 for epwm2_B
- Capture waveform on boosterpack header J6/J8 Pin 77 for epwm3_A
- Capture waveform on boosterpack header J6/J8 Pin 78 for epwm3_B

## AM261X-LP

- Capture waveform on boosterpack header J2/J4 Pin 40 for epwm2_A
- Capture waveform on boosterpack header J2/J4 Pin 39 for epwm2_B
- Capture waveform on boosterpack header J2/J4 Pin 38 for epwm3_A
- Capture waveform on boosterpack header J2/J4 Pin 37 for epwm3_B
- Capture waveform on boosterpack header J2/J4 Pin 36 for epwm4_A
- Capture waveform on boosterpack header J2/J4 Pin 35 for epwm4_B

# Supported Combinations

Parameter | Value
--- | ---
CPU + OS | r5fss0-0 nortos
Toolchain | ti-arm-clang
Board | am263px-cc, am263px-lp
Example folder | examples/drivers/epwm/epwm_xcmp_multiple_edges

# Steps to Run the Example

- When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
- When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)
- Establish connections as mentioned in External Connections section
- Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

# See Also

EPWM

# Sample Output

Shown below is a sample output when the application is run,

EPWM XCMP multiple edges Test Started ...
EPWM XCMP multiple edges Test Passed!!
All tests have passed!!

EPWM XCMP multiple edges waveform