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drivers: adc: nrf: align to channel-wide burst configuration

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Some nRF devices allow to configure burst setting per channel
while others globally.

Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>
This commit is contained in:
Nikodem Kastelik 2025-06-02 15:55:00 +02:00 • committed by Benjamin Cabé
commit 5abf43c7dd
1 changed files with 16 additions and 8 deletions
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24
drivers/adc/adc_nrfx_saadc.c
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@ -220,7 +220,9 @@ static int adc_nrfx_channel_setup(const struct device *dev,
.resistor_p = NRF_SAADC_RESISTOR_DISABLED,
.resistor_n = NRF_SAADC_RESISTOR_DISABLED,
#endif
#if NRF_SAADC_HAS_CH_BURST
.burst = NRF_SAADC_BURST_DISABLED,
#endif
};
uint8_t channel_id = channel_cfg->channel_id;
uint32_t input_negative = channel_cfg->input_negative;
@ -530,6 +532,7 @@ static int start_read(const struct device *dev,
uint8_t resolution = sequence->resolution;
uint8_t active_channels;
uint8_t channel_id;
nrf_saadc_burst_t burst;
/* Signal an error if channel selection is invalid (no channels or
* a non-existing one is selected).
@ -581,10 +584,13 @@ static int start_read(const struct device *dev,
* is not used (hence, the multiple channel sampling is
* possible), the burst mode have to be deactivated.
*/
nrf_saadc_burst_set(NRF_SAADC, channel_id,
(sequence->oversampling != 0U ?
NRF_SAADC_BURST_ENABLED :
NRF_SAADC_BURST_DISABLED));
burst = (sequence->oversampling != 0U ?
NRF_SAADC_BURST_ENABLED : NRF_SAADC_BURST_DISABLED);
#if NRF_SAADC_HAS_CH_BURST
nrf_saadc_channel_burst_set(NRF_SAADC, channel_id, burst);
#else
nrf_saadc_burst_set(NRF_SAADC, burst);
#endif
nrf_saadc_channel_pos_input_set(
NRF_SAADC,
channel_id,
@ -596,10 +602,12 @@ static int start_read(const struct device *dev,
);
++active_channels;
} else {
nrf_saadc_burst_set(
NRF_SAADC,
channel_id,
NRF_SAADC_BURST_DISABLED);
burst = NRF_SAADC_BURST_DISABLED;
#if NRF_SAADC_HAS_CH_BURST
nrf_saadc_channel_burst_set(NRF_SAADC, channel_id, burst);
#else
nrf_saadc_burst_set(NRF_SAADC, burst);
#endif
nrf_saadc_channel_pos_input_set(
NRF_SAADC,
channel_id,