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 PIN_PRESSURE_CTRL   7
#define PIN_PROXIMITY_SENSOR    6
#define PIN_INT0        2 // Top button
#define PIN_INT1        0 // Bottom button
#define PIN_FLOW        3 // Flow sensor
#define FLOW_ML_PULSE   (1000.0/990) // Flow sensor: volume (ml) per pulse

#define TIME_BUTTONLONGPRESS    3   //Time in s until a Signal for a long pressed button is sent
/*
 * Explanation for the signal levels
 * SigInt_Psh           Button is pushed
 * SigInt_Rls       Button is released
 * SigInt_RlsLong   Button is pressed for more than TIME_BUTTONLONGPRESS seconds
 * 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
 */

/*
 * Functions of the buttons, the letter in brackets defines if the event is triggered
 * on push(P), release(R) or long pressing(RLong) of the button
 * TOP Button: Turn machine on(R), start brewing(P),
 *
 * BOTTOM button: Stop brewing immediately(P), Turn machine off(RLong),
 */
enum HalSig {
    SigInt0Psh = 1,
    SigInt0Rls = 2,
    SigInt0RlsLong = 3,
    SigInt1Psh = 4,
    SigInt1Rls = 5,
    SigInt1RlsLong = 6,
    SigPressCls = 7,
    SigPressOpn = 8,
    SigProxOpn = 9,
    SigProxCvrd = 10,
    SigBrewOn = 11,
    SigBrewOff = 12
};

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);
void halMachineOn(void);
void halMachineOff(void);
void halInt0TimerHandler(void);
void halInt1TimerHandler(void);

#endif /* HAL_H_ */