ADC configuration for nRF5340DK SDK Connect SES

[mexco]

I need twoADC channels. I tried to configure using :

CONFIG_ADC= y in prj file,

&adc{
#io-channel-cells = < 0x2 >;
};   in overlay file .. the compile error appears as shown in atteched iamge.

Gulzar Singh

[mexco]

Hi,  I tried to use ADC code for single channel AIN0 from the following link.

Kazi Afroza Sultana said:

y0b

The code is in attached files (adc.h, adc.c). The device binding fails as shown in attached image.adc.h

Fullscreen adc.c Download

// ADC.C File
//****************
static int adc_sample(void)
{
	int ret;

	const struct adc_sequence sequence = {
		.channels = BIT(ADC_1ST_CHANNEL_ID),
		.buffer = p_sample_buffer,
		.buffer_size = sizeof(p_sample_buffer),
		.resolution = ADC_RESOLUTION,
	};

	if (!adc_dev) {
		return -1;
	}

	ret = adc_read(adc_dev, &sequence);
	if (ret) {
        printk("adc_read() failed with code %d\n", ret);
	}

	for (int i = 0; i < BUFFER_SIZE; i++) {
                printk("ADC raw value: %d\n", p_sample_buffer[i]);                
        }
	return ret;
}
//****************