RE: SAADC maintains high current consumption

tkorsdal — Thu, 15 Jun 2017 09:43:50 GMT

It is done in the SAADC IRQ handler. The code posted here has the fix added to it:

	if( SAADC_EVENTS_STOPPED > 0 )
{
	SAADC_EVENTS_STOPPED = 0;
	
	if( isr_cmd == ISR_CMD_CALIBRATE_OFFSET )
	{
		isr_cmd = ISR_CMD_NONE;
		TIMER1_TASKS_START = 1;
		SAADC_TASKS_START = 1;
	}
	else  // Stop ADC
	{
		PPI_CHENCLR = 1;
		TIMER1_TASKS_CLEAR = 1;
		TIMER1_TASKS_STOP = 1;
		
		uint8_t n;
		for( n = 0; n < 8; n++ )
		{
			SAADC_CH[n].CONFIG = 1 << 17;
			SAADC_CH[n].PSELP = 0;
			SAADC_CH[n].PSELN = 0;
		}

		SAADC_ENABLE = 0;
		SAADC_INTENCLR = ( 1 << 22 ) - 1;	// Disable all interrupts
		NVIC_DisableIRQ( SAADC_IRQ_NO );
		NVIC_ClearPendingIRQ( SAADC_IRQ_NO );
		
		os_isr_status_bits_set( DEVHDL_ADC, ISR_STATUS_SAMPLING_STOPPED );
	}
}

RE: SAADC maintains high current consumption

Jørgen Holmefjord — Thu, 15 Jun 2017 08:36:50 GMT

Could you post your code to put the device into sleep mode?

RE: SAADC maintains high current consumption

tkorsdal — Thu, 15 Jun 2017 08:32:32 GMT

The answer was found here:

devzone.nordicsemi.com/.../

Interrupts must be disabled and pending interrupts cleared.