BLE advertising during sleep

Connectivity BLE // NFC
,
1

Hi all, I’ve been reading the reference and tutorials to better understand replacing mesh with BLE, but I’ve hit a bit of a roadblock with BLE advertising with the intent to wake from sleep 2.0. Perhaps, I’m misunderstanding what I thought this should do, but if I start advertising then go to sleep with both .ble() and .duration() sleep config, my argon give the red SOS instead of sleeping. However, this works fine on a xenon for some reason. What silly mistake am I making?

If I remove any one of the three: ble wake, duration wake, or advertising, then the argon has no issue.

// run in manual mode for BLE offline mode
SYSTEM_MODE(MANUAL);

//BLE setup
const BleUuid serviceUuid("7cf29a2d-f244-45e3-8bd3-f4b86c974677");
BleAdvertisingData bleData;
SystemSleepConfiguration config;

void setup() {
  // give a human a chance to see the white LED
  delay(5000);
 
  // turn on BLE because we're in manual mode
  BLE.on();

  // create the data for advertising and advertise
  bleData.appendServiceUUID(serviceUuid);
  BLE.advertise();

  // example sleep config from argon reference
  config.mode(SystemSleepMode::STOP);
  config.duration(15s);
  config.ble();
}

void loop() {
  delay(1000);
  System.sleep(config);
}
2

@ismaelSB will take a look!

3

@electrophoenix @marekparticle
I am having this issue as well. Have you been able to solve the problem?

4

Unfortunately, I haven’t been able to make any progress on this particular issue. I’d love to get back at it if anyone has any ideas.

5

Unfortunately, the main problem is the wakeup that you set, in this case, the Argon can’t use the time to wake up the device, you need to use a pin.
If you delete the line

config.duration(15s);

the code works, but the device never wakes up.

Take a look at the documentation to read more about this:

image
image1418×524 103 KB

6

Thanks for the reply, @ismaelSB. The documentation you pasted says there’s a limit of 24 days in STOP mode, and elsewhere in the documentation it also says that the RTC is active in STOP mode. Part of my config is specifying SystemSleepMode::STOP, so shouldn’t this code still work?

7

Hey Steve,
I understand the same as you from the docs:

The SystemSleepMode::STOP mode is the same as the classic stop sleep mode (pin or pin + time).
Real-time clock (RTC) is kept running.
BLE is kept on if used as a wake-up source (Gen 3 devices only).
Can wake from: Time, GPIO, analog, serial, and cellular. On Gen 3 also BLE and Wi-Fi.

@mariano , have you done any tests with Bluetooth and sleep?
thanks

8

I haven’t done any tests, but will try to replicate this in the next few days.

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