LED Service Hw Test

LED tests help verify that the LEDs on the switch are working correctly. Our LED tests trigger different sequences of LED blinking / color changes based on the test, config, and BSP mapping.

Steps to Run LED Tests

1. Compile the led_service_hw_test binary by following instructions on the build page.

2. Copy the binary onto the switch.

3. Create a file named /tmp/led.conf on your switch, with your platform name (PLATFORM_NAME) as follows:

   {
     "defaultCommandLineArgs": {
       "mode": "PLATFORM_NAME"
     },
     "ledControlledThroughService": false
   }

4. Run the LED color change test:

   ./led_service_hw_test --gtest_filter=LedServiceTest.checkLedColorChange --led-config /tmp/led.conf --visual_delay_sec 1

   This test is successful if the following sequence occurs:

   • Both LEDs turn on.
   • Both LEDs turn off.
   • Second LED turns on, then turns blue, then turns yellow.

5. Run the LED blinking test:

   ./led_service_hw_test --gtest_filter=LedServiceTest.checkLedBlinking --led-config /tmp/led.conf --visual_delay_sec 1

   This test is successful if the LEDs are blinking blue and yellow.

Expected Tests to Pass

Test Name	Basic Link Tests
LedServiceTest.checkLedColorChange	Checks that LEDs can turn on/off, change color between blue and yellow.
LedServiceTest.checkLedBlinking	Checks that LEDs can blink between different colors.