hal.h

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/*
 * hal.h
 *
 *  Created on: Aug 3, 2016
 *      Author: sebastian
 */

#ifndef HAL_H_
#define HAL_H_

#define RELAIS_HEAT     29
#define RELAIS_PUMP     25
#define RELAIS_POWER    28
#define PRESSURE_CTRL   7
#define PROXIMITY_SENSOR    6

#define INT0        0 // bottom button
#define INT1        2 // top button
#define FLOW        3 // flow sensor
#define PROX_COVERED    1 //proximity sensor
#define FLOW_ML_PULSE   (1000.0/990) // Flow sensor: volume (ml) per pulse
/*
 * Explanation for the signal levels
 * SigInt_Psh           Button is pushed
 * SigInt_Rls       Button is released
 * SigPressCls      Pressure control is closed, System is heating
 * SigPressOpn      Pressure control is open, heating is off
 * SigProxOpn       Proximity Sensor is uncovered
 * SigProxCvrd  Proximity Sensor is covered
 */
enum HalSig {
    SigInt0Psh = 1,
    SigInt0Rls = 2,
    SigInt1Psh = 3,
    SigInt1Rls = 4,
    SigPressCls = 5,
    SigPressOpn = 6,
    SigProxOpn = 7,
    SigProxCvrd = 8,
    SigBrewOn = 9,
    SigBrewOff = 10
};

void halInit(void);
void halRelaisOn(int relais);
void halRelaisOff(int relais);
void halRelaisSet(int relais, int state);
int halGetRelaisState(int relais);
void halInt0(void);
void halInt1(void);
void halIntFlow(void);
void halIntPressure(void);
void halIntProximity(void);
float halGetFlow(void);
void halResetFlow(void);
bool halIsHeating(void);
bool halProxSensorCovered(void);
int halGetInt0(void);
int halGetInt1(void);
void halSendSignal(int value);

#endif /* HAL_H_ */