SDL MCU VTM

Table of Contents

• Introduction
  • Use Cases
• Supported Combinations
• Steps to Run the Example
• See Also
• Sample Output

Introduction

This example demonstrates the usage of the VTM to detect overtemperature events and signal the events through the ESM. The example shows how to configure the VTM for the various alerts and listen for VTM events using the ESM. It also shows forcing an error in order to demonstrate application notification of overtemperature events.

The example demonstrates:

• Configuring the VTM thresholds
• Early alert event detection
• Critial threshold event detection
• Follow-up event notification when temperature has dropped to a safe level

Use Cases

Use Case	Description
UC-0	Configuration of VTM threshold to trigger early warning, then return thresholds back to normal to simulate "cooling down".
UC-1	Configuration of VTM to trigger early warning, then alter the thresholds again to pass temperature critical threshold. Then, return thresholds back to normal to simulate "cooling down".

Supported Combinations

Parameter	Value
CPU + OS	m4fss0-0 nortos
	r5fss0-0 nortos
Toolchain	ti-arm-clang
Board	am64x-evm
Example folder	examples/sdl/vtm/

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)
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

See Also

VTM

Sample Output

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

VTM Example Application
 
VTM_ESM_init: Init MAIN ESM complete
 
 VTM_ESM_init complete
Starting Use Case 0
sensor id                       : 0
adc_code                        : 348
temp in milli degree celcius    : 53261
vtmTriggerTh: Setting lt_thr0_val temp to 49261 millidegrees Celsius, and adc_code_lt_thr0 = 330
vtmTriggerTh: Setting gt_thr1_val temp to 51261 millidegrees Celsius, and adc_code_gt_thr1 = 340
vtmTriggerTh: Setting gt_thr2_val temp to 58261 millidegrees Celsius, and adc_code_gt_thr2 = 370
Finished VTM threshold setting
case 0 success
 
 Use Case 0 completed: Input Event Trigger = Step completed successfully,
 
Starting Use Case 1
sensor id                       : 0
adc_code                        : 349
temp in milli degree celcius    : 53493
vtmTriggerTh: Setting lt_thr0_val temp to 49493 millidegrees Celsius, and adc_code_lt_thr0 = 332
vtmTriggerTh: Setting gt_thr1_val temp to 51493 millidegrees Celsius, and adc_code_gt_thr1 = 340
vtmTriggerTh: Setting gt_thr2_val temp to 58493 millidegrees Celsius, and adc_code_gt_thr2 = 370
Finished VTM threshold setting
 
 Use Case 1 completed: Input Event Trigger = Step completed successfully,
 
 
ESM Example Application summary
-------------------------------
Completed 2 Test Cases
Received 1 High Priority Interrupts
Received 5 Low Priority Interrupts
 
Test Case Event Log
------------------
 
Test Case 0: ESM Call back function called : grpChannel 0x4, index 0x9, intSrc 0x89
  ESM instance #2, ESM interrupt type = Low Priority ESM event
 
Test Case 0: ESM Call back function called : grpChannel 0x4, index 0x8, intSrc 0x88
  ESM instance #2, ESM interrupt type = Low Priority ESM event
 
Test Case 1: ESM Call back function called : grpChannel 0x4, index 0x9, intSrc 0x89
  ESM instance #2, ESM interrupt type = Low Priority ESM event
 
Test Case 1: ESM Call back function called : grpChannel 0x4, index 0xa, intSrc 0x8a
  ESM instance #2, ESM interrupt type = High Priority ESM event
 
Test Case 1: ESM Call back function called : grpChannel 0x4, index 0x9, intSrc 0x89
  ESM instance #2, ESM interrupt type = Low Priority ESM event
 
Test Case 1: ESM Call back function called : grpChannel 0x4, index 0x8, intSrc 0x88
  ESM instance #2, ESM interrupt type = Low Priority ESM event
 
 VTM Example Application: Complete
 All Use cases have passed.