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drivers: adc: add adc disable to save power

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Disables adc once conversion completes and enables
again before sampling

Signed-off-by: Hao Luo <hluo@ambiq.com>
This commit is contained in:
Hao Luo 2024-10-14 16:55:12 +08:00 • committed by Henrik Brix Andersen
commit 18dc21b44d
1 changed files with 3 additions and 3 deletions
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6
drivers/adc/adc_ambiq.c
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@ -119,6 +119,7 @@ static void adc_ambiq_isr(const struct device *dev)
&Sample);
*data->buffer++ = Sample.ui32Sample;
}
am_hal_adc_disable(data->adcHandle);
adc_context_on_sampling_done(&data->ctx, dev);
}
}
@ -185,9 +186,6 @@ static int adc_ambiq_start_read(const struct device *dev, const struct adc_seque
}
__ASSERT_NO_MSG(channels == 0);
/* Enable the ADC. */
am_hal_adc_enable(data->adcHandle);
data->active_channels = active_channels;
data->buffer = sequence->buffer;
/* Start ADC conversion */
@ -269,6 +267,8 @@ static void adc_context_start_sampling(struct adc_context *ctx)
struct adc_ambiq_data *data = CONTAINER_OF(ctx, struct adc_ambiq_data, ctx);
data->repeat_buffer = data->buffer;
/* Enable the ADC. */
am_hal_adc_enable(data->adcHandle);
/*Trigger the ADC*/
am_hal_adc_sw_trigger(data->adcHandle);
}