ADC SOC EPWM

Table of Contents

• Introduction
  • SOC Configurations
  • Interrupt Configurations
  • ISR App_adcISR
• External Connections
  • AM263x-CC E2
  • AM263x-CC E1
  • AM263x-LP
• Watch Variables
• Supported Combinations
• Steps to Run the Example
• See Also
• Sample Output

Introduction

This examples demonstrates periodical triggering of conversion on ADC1 by EPWM0

Example Block diagram

SOC Configurations

• SOC 0 trigger is set by EPWM0SOCA
• Samples on ADC1 Channel 0

Interrupt Configurations

• ADC1INT1 source is set to EOC/SOC0
• INTXBAR0 is set to ADC1INT1.

ISR App_adcISR

• Reads the SOC0 result.
• Clears ADC1INT1 flag

External Connections

AM263x-CC E2

• feed analog input on ADC 1 Channel 0 - HSEC connecter pin - 12

AM263x-CC E1

• feed analog input on ADC 1 Channel 0 - HSEC connecter pin - 18

AM263x-LP

• feed analog input on ADC 1 Channel 0 - J1/J3 Pin - 24

Watch Variables

• gAdc1Result0 : the array holds the sampled values of the ADC 1 Channel 0

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 nortos
Toolchain	ti-arm-clang
Board	am263x-cc, am263x-lp
Example folder	examples/drivers/adc/adc_soc_epwm/

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
• Using watch variables, view the ADC conversion results.
• View the ADC conversion results in UART console logs

See Also

ADC

Sample Output

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

ADC Soc EPWM Test Started
ADC 1 channel 1 output:
    128
    128
    128
    128
    128
    128
    128
    128
    128
    128
    128
ADC Soc EPWM Test Passed
All tests have passed!!