search

GrumpyOldPizza / ArduinoCore-stm32l0

Arduino Core for STM32L0
125 stars 67 forks source link

Use of TimerMillis seems to interfere with LoRaWAN join #33

Closed MrSurly closed 6 years ago

MrSurly commented 6 years ago

I have a TimerMillis that I'm using to blink LEDs -- it triggers every 100ms. If I do not activate this timer, the the join seems to occur immediately. When it's in use, join can take several minutes.

Having the timer > 1000 ms helps considerably.

Is there some sort of timer contention on the STM32L0?

GrumpyOldPizza commented 6 years ago

There should not be any conention.

Mind sharing the sketch here, so that I can take a peek ?

On Wed, Aug 22, 2018 at 2:46 PM Eric Poulsen notifications@github.com wrote:

I have a TimerMillis that I'm using to blink LEDs -- it triggers every 100ms. If I do not activate this timer, the the join seems to occur immediately. When it's in use, join can take several minutes.

Having the timer > 1000 ms helps considerably.

Is there some sort of timer contention on the STM32L0?

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/GrumpyOldPizza/ArduinoCore-stm32l0/issues/33, or mute the thread https://github.com/notifications/unsubscribe-auth/AG4QfJsQ3soSj88SPpeyv0xPZPcWG5wAks5uTcMRgaJpZM4WIYsd .

MrSurly commented 6 years ago

It's ... very large. I'll try to make a minimum sketch that will re-create.

GrumpyOldPizza commented 6 years ago

Oki. What board is that on ?

On Wed, Aug 22, 2018, 5:10 PM Eric Poulsen notifications@github.com wrote:

It's ... very large. I'll try to make a minimum sketch that will re-create.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/GrumpyOldPizza/ArduinoCore-stm32l0/issues/33#issuecomment-415216859, or mute the thread https://github.com/notifications/unsubscribe-auth/AG4QfLVTcFuxQ5OJcSvMYWia7tNd0zb6ks5uTeT_gaJpZM4WIYsd .

MrSurly commented 6 years ago

It's a custom board running the CMWX1ZZABZ-078. Variant is B-L072Z-LRWAN1. Actual MCU is STM32L082.

Note that I have not nailed it down to any root cause. I do notice that when I disable the LED timer, then it often connects immediately after the first (sometimes second) join request. Before, the wait was 5-6 join requests.

The physical gateway is 5 feet away, and we're using TTN.

GrumpyOldPizza commented 6 years ago

Is there a quick repro I could take a peek at ?

MrSurly commented 6 years ago

Yes, sorry, I've been out-of-town since Wednesday.

MrSurly commented 6 years ago

I'm going to close this for now. I think TTN is just slow at responding sometimes.