Timer Example Issue

RE: Timer Example Issue

Bjørn Kvaale — Tue, 28 Nov 2017 13:55:35 GMT

Yes, that would make sense. Good to hear that you figured it out!

RE: Timer Example Issue

Bjørn Kvaale — Tue, 28 Nov 2017 13:53:19 GMT

Hi Rishi, good for you for figuring out the peripheral example problem. It should be possible to use either Timer 1 or Timer 2 when using the softdevice, as this case answer explains. Have you taken a look at the application timer tutorial? This might be helpful. Let me take a closer look and get back to you.

RE: Timer Example Issue

Rishi — Mon, 27 Nov 2017 11:47:23 GMT

Hey Bjorn, I figured out using timers with softdevice as well. Apparently, the issue was due to the unavailability of LFCLK on my custom board. I created a custom board file and set the clock source to be synthesised from HFCLK. Works well.

RE: Timer Example Issue

Rishi — Fri, 24 Nov 2017 06:32:54 GMT

I figured out the peripheral example issue from the discussion here

The problem persistes in example containing softdevice

RE: Timer Example Issue

Rishi — Fri, 24 Nov 2017 05:39:36 GMT

I am facing a similar issue but with SDK-12.2.0. Considering only timer example in peripheral directory, the example runs perfectly fine if run with timer 0. However, if I configure the example to use timer 1 or timer 2, it does not work as observed with timer 0. This is just an observation.

The main problem is in BLE_Peripheral examples. I am able to initialize timer 2 and run the code. But if I initialize timer 1, with similar configuration, I get an NRF_ERROR_INVALID_STATE on calling nrf_drv_timer_init();

Any insights?

RE: Timer Example Issue

Bjørn Kvaale — Mon, 09 Oct 2017 09:15:38 GMT

Hi Spizzak. I tried what you said. It seems that the template_project example essentially turns on everything (e.g. all of the timers). The timer example only has one timer turned on. Could you send me your code so I can take a closer look? You can send it as a private message in devzone by sharing it via google drive or dropbox for example.

RE: Timer Example Issue

phipi — Wed, 04 Oct 2017 13:48:44 GMT

Thanks for the response. Yes that is the template I'm referring to. The way I had to disable the timer was by opening sdk_config.h and entering the Configuration Wizard view. Then under nRF Drivers > TIMER_ENABLED we see TIMER0_ENABLED, TIMER1_ENABLED and TIMER2_ENABLED are all selected. I had to unselect timer 1 and 2 in order for my application to start working

RE: Timer Example Issue

Bjørn Kvaale — Wed, 04 Oct 2017 09:28:25 GMT

I'm looking at the template example right now (i.e. the one mentioned in my previous comment), but it seems like only Timer 0 is initialized there in the main.c file.

const nrf_drv_timer_t MYTIMER = NRF_DRV_TIMER_INSTANCE(0);

It seems like we are looking at different examples. Could you specify where you found the template example you are referring to? Cheers, Bjørn

RE: Timer Example Issue

Bjørn Kvaale — Wed, 04 Oct 2017 08:57:25 GMT

Very sorry for the late response. I've taken a look at this case over the last few days, but have not found a definite solution yet. Just to get things clear, are you using the no softdevice template example located under examples/peripheral/template_project folder in SDK 12.3? For the UART BLE example, you're referring to the example under /ble_peripheral/ble_app_uart/ folder, right? And lastly, the timer example is located under examples/peripheral/timer, right? Sorry for this stupid question, it's just I don't want to spend a lot of time looking at code and then realizing after a while that I am looking at different examples compared to you. I will get to the bottom of this soon.

RE: Timer Example Issue

phipi — Thu, 28 Sep 2017 16:02:58 GMT

I'm using SDK12.3 on the nrf51822 with no softdevice

RE: Timer Example Issue

Bjørn Kvaale — Thu, 28 Sep 2017 10:53:00 GMT

Are you using SDK 14? I will take a closer look at this case tomorrow.