Hey, I came across a strange problem with the WKP (/A7) pin… Using a simple code, I made my Photon sleep and wake up through the A6 pin. However, when my Photon woke up, it wasn’t able to use WKP (/A7) properly; I wasn’t able to turn on an LED, for example. Using the same code, but changing WKP to …

Sounds similar to this: [image] Does PWM stop on A7 after stop mode Firmware I have a buzzer connected to A7 (WKP) and the Tone function works perfectly prior to any sleep modes. After I go into stop mode using (System.sleep(D4, FALLING, sleepDuration)wink and the device…

@wesner0019 Yes, it seems like the same problem, here. I looked into the firmware and it seems like WKP is automatically enabled as the wake up pin when System.sleep() is used (whether it be in stop mode or deep sleep mode). In the firmware/hal/src/stm32f2xx/core_hal_stm32f2xx.c file, the function…

Problem with WKP (/A7) after System.sleep

Troubleshooting

wesner0019 April 1, 2016, 2:23pm 2

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Problem with WKP (/A7) after System.sleep

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