Disable Sleep Mode on Nano 33 BLE

Official Hardware Nano Family Nano 33 BLE
1

I have a project where I'm using the Nano 33 BLE to connect and read data from another BLE device (not an Arduino device) that will send button data to the Nano BLE. 10 minutes after the last button press, the other device will go into sleep mode and the Nano will go back into scanning, until an interrupt wakes up the other device and they will reconnect. This process is all working great.

My issue is that after a certain amount of time in scanning mode, the Nano BLE will go into sleep mode itself. When this happens, I am unable to reconnect when the other device wakes back up. My question is, is there a way to disable the sleep mode on the Nano BLE? Or some method of preventing from going into sleep mode? Ideally the Nano BLE would be scanning 24/7 while not connected to the other device. Power consumption is not an issue as the device will be plugged in over USB to a desktop computer.

Thanks in advance!

2

This might explain the issue: BLE.scan(true) stopped after 10-15 minutes · Issue #202 · arduino-libraries/ArduinoBLE · GitHub

3

This makes sense. I was able to fix the issue by simply running BLE.stopScan() and BLE.startScan() periodically. Once I did that it ran for several days with no issues and would reconnect right away. Thanks!

4

You can take a look at Arduino-Nano-33-IoT-Ultimate-Guide/SavePowerSleeping.md at master · ostaquet/Arduino-Nano-33-IoT-Ultimate-Guide · GitHub