BLE_app_uart example with SAADC (with timer) not working

[Kashinath]

Hi all,

I am using SDK = 15, softdevice = v6, chipset:nrf52810

I have used ble_app_uart and SAADC example code for one of my application, its working fine, and next i have changed the SAADC config with timer only, by commenting PPI configaration, normally(as peripheral not with BLE) this also works fine, when i added this to ble_app_uart example then it is not working, i have followed the below link for timer ADC,

https://devzone.nordicsemi.com/f/nordic-q-a/29464/saadc-how-run-a-code-just-before-the-sample-is-taken/117151#117151

I want to develop a application based on timer ADC,Kindly check and suggest me for the same, thanks in advance.

regards

kashinath

[AmbystomaLabs]

Likely the SAADC example uses timer0 since it is a stand alone example.  Both timer0 and rtc0 are protected devices when used with a softdevice.  You need to move the SAADC resources to timer1 or other.

[JunaidWW]

Hey, I am facing the exact same issue but I don't know how to move SAADC to timer1 or timer2. Can you help me with that?

[Jørgen Holmefjord]

In the SAADC example in the SDK, you select the timer instance in the top of mail:

// TIMER0:
static const nrf_drv_timer_t m_timer = NRF_DRV_TIMER_INSTANCE(0);

// TIMER2:
static const nrf_drv_timer_t m_timer = NRF_DRV_TIMER_INSTANCE(2);

You also need to enable the timer instance for the driver in your sdk_config.h file:

// <q> TIMER2_ENABLED  - Enable TIMER2 instance

#ifndef TIMER2_ENABLED
#define TIMER2_ENABLED 1
#endif