RE: zephyr ADC 8K

kamacode — Mon, 01 Mar 2021 11:16:46 GMT

working very well, issue closed

RE: zephyr ADC 8K

haakonsh — Tue, 17 Nov 2020 09:54:04 GMT

I suggest you use the nrfx saadc driver directly:

#include <zephyr.h>
#include <nrfx_saadc.h>

void main(void)
{
	/* Connect SAADC IRQ to nrfx_twim_3_irq_handler */
	IRQ_CONNECT(DT_IRQN(DT_NODELABEL(adc)),
		    DT_IRQ(DT_NODELABEL(adc), priority),
		    nrfx_isr, nrfx_saadc_irq_handler, 0);

	/* Initialize driver */

}

Add CONFIG_NRFX_SAADC=y to prj.conf.

See SAADC driver and SAADC HAL APIs on use.

You'll also need to set up a source to trigger the SAADC's sample task. At 16ksps you can use an RTC unless you need higher precision of the sample rate, in that case you use a TIMER.

Are you familiar with the nRF5 SDK? Specifically PPI and how to connect events to tasks?