Low Power Mode on SAADC on Zephyr

Question

Hello, 
 We noticed in the nRF5 SAADC libraries the presence of a low_power bit setting on the nrf_drv_saadc_config_t config.

But, we were not able to find such low_power_mode mother in Zephyr, neither in the nrfx_saadc libs. 
 Said that: 
 1) How should we enable the low_power_mode mode on the SAADC in Zephyr? 
 2) Would that low_power_mode mode be supported on the nRF9160 SAADC?

Håkon Alseth · Accepted Answer

Hi, 
 
 nrf_drv_saadc.h is an older nRF5 SDK driver, pre-nrfx drivers, and will not be applicable for zephyr. 
 1) How should we enable the low_power_mode mode on the SAADC in Zephyr? 
 The important part for low power SAADC is to stop/disable after a conversion is done. This is automatically handled if you use zephyr's "adc" driver (which uses nrfx_saadc underneath) 
 2) Would that low_power_mode mode be supported on the nRF9160 SAADC? 
 Yes, the "adc" library shall be low power. 
 
 Kind regards, 
 Håkon