On-board LEDs aren't working
I'm using the spresense SDK and VS Code. I got the environment setup, a project built in a workspace, and the spk downloaded to the Spresense. It's supposed to be just a little blinky thing: it turns LED1 on and off 10 times. However, the LED doesn't turn on: none of them do. I updated the SDK options to use the "gpio" app at Nuttsh, and I can turn other pins on and off - clearly visible on the 'scope - but the on-board LEDs don't light. A USB cable is plugged in; an auxiliary power supply is plugged into the support board USB port, but no LEDs. The power LED is on, but not PIN_I2S1_BCK / GPIO_LED1 or the other three. Is there a particular option I need to enable in the SDK, or do I have a possibly damaged board?
I did look at the source code in this example here, but there's nothing really different about it.
@aaronm well, pfft! Tobias Johansson kindly chatted with me and provided an spk to test out the LEDs, which worked, but using the source he provided, which wasn't significantly different from mine, I still couldn't get my LEDs to blink. After a pause to work on other things, I came back to this and turned various SDK configurations on and off - one at a time so I knew what I changed - and found that turning off the ARCH_LEDS setting enabled my program to control the on-board LEDs. I probably turned it on at first thinking it was related to LEDs and therefore necessary.
Many Thanks! to Tobias.
Tobias Johansson last edited by
@aaronm Awesome that you got it working and thanks for sharing your findings!