mirror of https://github.com/ArduPilot/ardupilot
35 lines
910 B
C++
35 lines
910 B
C++
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#include "AP_ADC_AnalogSource.h"
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/* Unfortunately we don't have a valid implementaton for read_latest - we
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* only have access to the average from the ADC driver. Not really a big deal
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* in our application currently. */
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extern const AP_HAL::HAL& hal;
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float AP_ADC_AnalogSource::read_latest() {
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return read_average();
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}
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float AP_ADC_AnalogSource::read_average() {
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float fullscale = _adc->Ch(_ch);
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float scaled = _prescale * fullscale;
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return scaled;
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}
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/*
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return voltage in Volts
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*/
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float AP_ADC_AnalogSource::voltage_average()
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{
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float fullscale = _adc->Ch(_ch);
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// note that the Ch6 ADC on APM1 has a 3.3V range, and is against
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// an internal reference, not the 5V power supply
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return fullscale * 3.3f * 2.44140625e-4f;
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}
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void AP_ADC_AnalogSource::set_pin(uint8_t machtnichts) {
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/* it would be an error to call this
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* but for now we'll leave it a no-op. */
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}
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