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Update readmes and pics for battery measurement
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| Original file line number | Diff line number | Diff line change |
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| #ifndef _SENSOR_BATTERY_H_ | ||
| #define _SENSOR_BATTERY_H_ | ||
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| #include <Debug.h> | ||
| #include <AlarmClock.h> | ||
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| namespace as { | ||
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| template <uint8_t SENSPIN, uint8_t ACTIVATIONPIN> | ||
| class BatterySensorLoad : public Alarm { | ||
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| uint8_t m_SensePin, m_ActivationPin; | ||
| uint16_t m_LastValue, m_Low, m_Critical, m_Factor; | ||
| uint32_t m_Period; | ||
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| public: | ||
| BatterySensorLoad () : Alarm(0), m_LastValue(0), m_Period(0), m_Low(0), m_Critical(0), m_Factor(2000), m_SensePin(SENSPIN), m_ActivationPin(ACTIVATIONPIN) {} | ||
| virtual ~BatterySensorLoad() {} | ||
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| virtual void trigger (AlarmClock& clock) { | ||
| DPRINTLN(F("BattLoad trigger")); | ||
| tick = m_Period; | ||
| clock.add(*this); | ||
| m_LastValue = voltage(); | ||
| } | ||
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| uint16_t current () const { | ||
| return m_LastValue; | ||
| } | ||
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| bool critical () const { | ||
| return m_LastValue < m_Critical; | ||
| } | ||
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| void critical (uint16_t value) { | ||
| m_Critical = value; | ||
| DPRINT(F("BattLoad set crit: ")); DDECLN(m_Critical); | ||
| } | ||
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| bool low () const { | ||
| return m_LastValue < m_Low; | ||
| } | ||
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| void low (uint16_t value) { | ||
| m_Low = value; | ||
| DPRINT(F("BattLoad set low: ")); DDECLN(m_Low); | ||
| } | ||
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| void init(uint32_t period, AlarmClock& clock, uint16_t factor = 2000) { | ||
| m_Factor = factor; | ||
| pinMode(m_ActivationPin, OUTPUT); | ||
| digitalWrite(m_ActivationPin, LOW); // N-Channel Mosfet off | ||
| pinMode(m_SensePin, INPUT); | ||
| digitalWrite(m_SensePin, LOW); // pull-up off | ||
| m_LastValue = voltage(); | ||
| m_Period = period; | ||
| tick = m_Period; | ||
| clock.add(*this); | ||
| } | ||
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| virtual uint16_t voltage() { | ||
| uint8_t timeout; | ||
| uint32_t adc; | ||
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| // setup ADC: complete ADC init in case other modules have chamged this | ||
| ADCSRA = 1<<ADEN | 1<<ADPS2 | 1<<ADPS1 | 1<<ADPS0; // enable ADC, prescaler 128 = 62.5kHz ADC clock @8MHz (range 50..1000 kHz) | ||
| ADMUX = 1<<REFS1 | 1<<REFS0; // AREF: Internal 1.1V Voltage Reference with external capacitor at AREF pin | ||
| ADCSRB = 0; | ||
| uint8_t channel = m_SensePin - PIN_A0; | ||
| ADMUX |= (channel & 0x0F); // select channel | ||
| //delay(30); // load CVref 100nF, 5*Tau = 25ms -> not needed here because of delay(300) below | ||
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| digitalWrite(m_ActivationPin, HIGH); // N-Channel Mosfet on | ||
| delay(200); // Batterie vor der Messung für 200ms belasten | ||
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| // 1x dummy read | ||
| ADCSRA |= 1<<ADSC; timeout = 50; | ||
| while (ADCSRA & (1<<ADSC)) { delayMicroseconds(10); timeout--; if (timeout==0) break; } | ||
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| ADCSRA |= 1<<ADSC; timeout = 50; | ||
| while (ADCSRA & (1<<ADSC)) { delayMicroseconds(10); timeout--; if (timeout==0) break; } | ||
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| digitalWrite(m_ActivationPin, LOW); // N-Channel Mosfet off | ||
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| adc = 11UL * m_Factor * (ADC & 0x3FF) / 1024 / 10; | ||
| DPRINT(F("BattLoad voltage: ")); DDECLN(adc); | ||
| return (uint16_t)adc; | ||
| } | ||
| }; | ||
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| } | ||
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| #endif |
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