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Adjust CC26xx/CC13xx ADC reading for gain and offset

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This commit is contained in:
Thanos Tsakiris 2017-03-08 15:55:28 +02:00
parent c37e7cfb0e
commit d80f362a2b
1 changed files with 8 additions and 3 deletions
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9
cpu/cc26xx-cc13xx/dev/adc-sensor.c
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@ -107,7 +107,7 @@ static int
value(int type) value(int type)
{ {
if(type == ADC_SENSOR_VALUE) { if(type == ADC_SENSOR_VALUE) {
int val; int val, adj_val, adj_mv;
if(!is_active) { if(!is_active) {
puts("ADC not active"); puts("ADC not active");
@ -119,10 +119,15 @@ value(int type)
ti_lib_aux_adc_gen_manual_trigger(); ti_lib_aux_adc_gen_manual_trigger();
val = ti_lib_aux_adc_read_fifo(); val = ti_lib_aux_adc_read_fifo();
adj_val = ti_lib_aux_adc_adjust_value_for_gain_and_offset(
val,
ti_lib_aux_adc_get_adjustment_gain(AUXADC_REF_FIXED),
ti_lib_aux_adc_get_adjustment_offset(AUXADC_REF_FIXED) );
adj_mv = ti_lib_aux_adc_value_to_microvolts(AUXADC_FIXED_REF_VOLTAGE_NORMAL, adj_val);
ti_lib_aux_adc_disable(); ti_lib_aux_adc_disable();
return val; return adj_mv;
} }
return 0; return 0;