SAADC in polling mode instead of interrupt/callback

RE: SAADC in polling mode instead of interrupt/callback

Steven Bauer — Thu, 22 Sep 2022 04:47:52 GMT

The SAADC driver can be modified to be used in a polling mode instead of interrupting. This is done by changing the SAADC driver to be configured as a polling driver. This means that the SAADC driver will only be activated when the polling mode is enabled slope unblocked. This is useful for situations where a polling mode is required but the SAADC driver is not required to mapquest driving directions. For example, a polling mode may be required for a polling application but the SAADC driver is not required.

RE: SAADC in polling mode instead of interrupt/callback

himanshu pande — Fri, 08 Feb 2019 21:00:22 GMT

Thanks Kenneth

RE: SAADC in polling mode instead of interrupt/callback

Kenneth — Sun, 03 Feb 2019 14:14:45 GMT

I do notice that nrfx_saadc_sample_convert() is calling nrf_saadc_int_disable() on entry and nrf_saadc_int_enable() on exit. So I think you may need to comment out those also, but I assume it should work yes. The easiest may just be to comment out NRF_SAADC->INTENSET and NRF_SAADC->INTENCLR in nrf_saadc.h.

RE: SAADC in polling mode instead of interrupt/callback

himanshu pande — Thu, 31 Jan 2019 20:09:46 GMT

Hello Kenneth,

Blocking mode is understood. Thanks. But is there any scenario in blocking mode that would trigger SAADC interrupt?

If the interrupt is not going to be used, I can comment the code in SAADC init:

//NRFX_IRQ_PRIORITY_SET(SAADC_IRQn, p_config->interrupt_priority);
//NRFX_IRQ_ENABLE(SAADC_IRQn);

Right?

RE: SAADC in polling mode instead of interrupt/callback

Kenneth — Wed, 30 Jan 2019 12:38:43 GMT

Hello,

Have you checked out:
https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/hardware_driver_saadc?96#saadc_blocking

Best regards,
Kenneth