ECAP APWM Phase Shift

Table of Contents

• Introduction
• External Connections
  • AM263x
  • AM263Px
  • AM261x
• Supported Combinations
• Steps to Run the Example
• See Also
• Sample Output

Introduction

ECAP APWM Phase Shift Feature.

This example showcases the phase shift feature of the ECAP.

Configurations,

1. EPWM and 2 ECAPs (in APWM mode) are configured for period of 5000 SYSCLKs
2. ECAPs are configured for Duty of 50% Active High PWM.
3. ECAP 0 has phase shift value of 0, where are the ECAP1 has phase shift value of 2500.
4. Output Xbars are used for routing the ECAP APWM output

External Connections

Observe ECAP outputs on the Outputxbar instances

AM263x

• CC E2, outputxbar 7,8 showcase ecap0,1 apwm outs respectively on HSEC pins 85 and 87
• LP, outputxbar 7,8 showcase ecap0,1 apwm outs respectively on J5.49, J5.50

AM263Px

• CC E2, outputxbar 7,8 showcase ecap0,1 apwm outs respectively on HSEC pins 85 and 87
• LP, outputxbar 7,8 showcase ecap0,1 apwm outs respectively on J5.49, J5.50

AM261x

• LP, outputxbar 1,5, showcase ecap 0,1 apwm outs respectively on J1.5, J5.48
• SOM E1, outputxbar 5,6 showcase ecap0,1 apwm outs respectively on HSEC pins 76 and 78

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 nortos
Toolchain	ti-arm-clang
Boards	am263px-cc, am263px-lp
Example folder	examples/drivers/ecap/ecap_apwm_phase_shift/

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

ECAP

Sample Output

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

ECAP APWM Phase Shift Test Started ...
ECAP APWM Phase Shift Test Passed!!
All tests have passed!!

Sample Output