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44 lines
1.1 KiB
44 lines
1.1 KiB
/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- |
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#ifndef __AP_ANALOG_SOURCE_ARDUINO_H__ |
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#define __AP_ANALOG_SOURCE_ARDUINO_H__ |
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#include "AnalogSource.h" |
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#include "AP_PeriodicProcess.h" |
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// special pin number which is interpreted as a |
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// internal Vcc voltage read |
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#define ANALOG_PIN_VCC 255 |
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class AP_AnalogSource_Arduino : public AP_AnalogSource |
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{ |
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public: |
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AP_AnalogSource_Arduino( uint8_t pin, float prescale = 1.0 ) : |
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_prescale(prescale) { |
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assign_pin_index(pin); |
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} |
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// setup the timer callback |
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static void init_timer(AP_PeriodicProcess * scheduler); |
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// read a value with a prescale |
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float read(void); |
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// read the raw 16 bit ADC value |
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uint16_t read_raw(void); |
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// read a Vcc value in millivolts |
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uint16_t read_vcc(void); |
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// read the average 16 bit ADC value since |
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// we last called read_average(). |
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float read_average(void); |
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private: |
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uint8_t _pin_index; |
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float _prescale; |
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void assign_pin_index(uint8_t pin); |
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}; |
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#endif // __AP_ANALOG_SOURCE_ARDUINO_H__
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