ADC Global Force

Table of Contents

• Introduction
  • Configurations
• External Connections
  • AM263Px-CC E2 or AM261x-SOM E1
  • AM263Px-LP
  • AM261x-LP
• Watch Variables
• Supported Combinations
• Steps to Run the Example
• See Also
• Sample Output

Introduction

This example demonstrates the Global SOC force feature. The ADCs that need to be forced globally are first selected in the Global Control using the API SOC_enableAdcGlobalForce with the instance number and the enable (TRUE/ FALSE) as arguments. then the API SOC_adcSocGlobalForce can be used to set a software trigger globally on the given SOC number at all the ADCs selected above.

Configurations

• ADCx SOC0 is configured for Software only trigger and generate interrupt at EOC0. x is 0,1,2,3,4.

External Connections

External connections are arbitrary for this feature demonstration. for instance, ADC0 SOC0 is configured for Channel 0. Feed Analog voltages on ADC0_AIN2

AM263Px-CC E2 or AM261x-SOM E1

• ADC0_AIN2, i.e., HSEC PIN 15

AM263Px-LP

• ADC0_AIN2, i.e., J5/7 PIN 66

AM261x-LP

• ADC0_AIN2, i.e., J5/7 PIN 63

Watch Variables

The below watch variables can be used to view ADC conversion results.

• gAdc0Results[] : Digital representation of the voltage converted by ADC0 when triggered by Global Software force
• gAdc1Results[] : Digital representation of the voltage converted by ADC1 when triggered by Global Software force
• gAdc2Results[] : Digital representation of the voltage converted by ADC2 when triggered by Global Software force
• gAdc3Results[] : Digital representation of the voltage converted by ADC3 when triggered by Global Software force
• gAdc4Results[] : Digital representation of the voltage converted by ADC4 when triggered by Global Software force

Supported Combinations

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

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 Triggered by Global Software Force Test Started ...
ADC Triggered by Global Software Force Test Passed
All tests have passed!!