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AP_ADC_AnalogSource: added voltage_average() interface

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This commit is contained in:
Andrew Tridgell 2013-03-03 16:13:19 +11:00
parent b1c27407a2
commit 3e2cb92c71
2 changed files with 12 additions and 0 deletions
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11
libraries/AP_ADC_AnalogSource/AP_ADC_AnalogSource.cpp
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@ -5,6 +5,8 @@
* only have access to the average from the ADC driver. Not really a big deal
* in our application currently. */
extern const AP_HAL::HAL& hal;
float AP_ADC_AnalogSource::read_latest() {
return read_average();
}
@ -15,6 +17,15 @@ float AP_ADC_AnalogSource::read_average() {
return scaled;
}
/*
return voltage in Volts
*/
float AP_ADC_AnalogSource::voltage_average()
{
float vcc_mV = hal.analogin->channel(ANALOG_INPUT_BOARD_VCC)->read_average();
float fullscale = _adc->Ch(_ch);
return fullscale * vcc_mV * 2.44140625e-10f; // 1.0/(4096*1000)
}
void AP_ADC_AnalogSource::set_pin(uint8_t machtnichts) {

1
libraries/AP_ADC_AnalogSource/AP_ADC_AnalogSource.h
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@ -14,6 +14,7 @@ public:
float read_average(void);
float read_latest(void);
void set_pin(uint8_t);
float voltage_average();
private:
AP_ADC * _adc;