brewco/brewco.c

/*****************************************************************************
 * Copyright (C) 2015
 *   
 * Michiel Broek <mbroek at mbse dot eu>
 *
 * This file is part of the mbsePi-apps
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * mbsePi-apps is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with ThermFerm; see the file COPYING.  If not, write to the Free
 * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *****************************************************************************/

#include "brewco.h"
#include "rdconfig.h"
#include "rdsession.h"
#include "rdrecipes.h"
#include "util.h"
#include "xutil.h"
#include "lcd-pcf8574.h"
#include "slcd.h"
#include "lock.h"
#include "devices.h"
#include "keyboard.h"
#include "simulator.h"
#include "prompt.h"
#include "setup.h"
#include "logger.h"


int			my_shutdown = FALSE;
int			mlt_pump_state = 0;

double			hltInput;			/* HLT PID variables		*/
double			hltOutput;
double			hltSetpoint;
double			mltInput;			/* MLT PID variables		*/
double			mltOutput;
double			mltSetpoint;

extern int              debug;
extern sys_config       Config;
extern a_recipe		*recipes;
extern int              lcdHandle;
extern int		slcdHandle;
extern int		sock;

#ifdef USE_SIMULATOR
extern int		SIM_cooler;
#endif
char			*etcpath = NULL;
char			*varpath = NULL;


#ifndef HAVE_WIRINGPI_H
pthread_t               threads[5];
#endif


#define	MANUAL_NONE	0
#define	MANUAL_SELHLT	1
#define	MANUAL_SELMLT	2
#define	MANUAL_HLT	11
#define	MANUAL_MLT	12

#define	PERC_INIT	0
#define	PERC_MLT	1
#define	PERC_HLT	2
#define	PERC_REST	3


int manual		= MANUAL_NONE;


/*
 * CGRAM characters
 */
unsigned char	degC[8] 	= { 0b01000, 0b10100, 0b01000, 0b00111, 0b01000, 0b01000, 0b01000, 0b00111 };
unsigned char	degF[8] 	= { 0b01000, 0b10100, 0b01000, 0b00111, 0b00100, 0b00110, 0b00100, 0b00100 };
unsigned char	SP_Symbol[8]	= { 0b11100, 0b10000, 0b11100, 0b00111, 0b11101, 0b00111, 0b00100, 0b00100 };
unsigned char	PumpONOFF[8]	= { 0b00000, 0b01110, 0b01010, 0b01110, 0b01000, 0b01000, 0b01000, 0b00000 };
unsigned char	RevPumpONOFF[8]	= { 0b11111, 0b10001, 0b10101, 0b10001, 0b10111, 0b10111, 0b10111, 0b11111 };
unsigned char	HeatONOFF[8]	= { 0b00000, 0b01010, 0b01010, 0b01110, 0b01110, 0b01010, 0b01010, 0b00000 };
unsigned char	RevHeatONOFF[8]	= { 0b11111, 0b10101, 0b10101, 0b10001, 0b10001, 0b10101, 0b10101, 0b11111 };
unsigned char	Language[8]	= { 0b11111, 0b00010, 0b01000, 0b11111, 0b00000, 0b10001, 0b10101, 0b11111 };


void help(void);
void die(int);


void help(void)
{
    fprintf(stdout, "mbsePi-apps brewco v%s starting\n\n", VERSION);
    fprintf(stdout, "Usage: brewco [-d] [-h]\n");
    fprintf(stdout, "  -d --debug              Debug and run in foreground\n");
    fprintf(stdout, "  -h --help               Display this help\n");
}


void die(int onsig)
{
    switch (onsig) {
#ifdef USE_SIMULATOR
	case SIGUSR1:	syslog(LOG_NOTICE, "Got SIGUSR1, start cooler");
			SIM_cooler = TRUE;
			return;
	case SIGUSR2:	syslog(LOG_NOTICE, "Got SIGUSR2, stop cooler");
			SIM_cooler = FALSE;
			return;
#endif
	case SIGHUP:    syslog(LOG_NOTICE, "Got SIGHUP, shutting down");
			break;
	case SIGINT:    syslog(LOG_NOTICE, "Keyboard interrupt, shutting down");
			break;
	case SIGTERM:   syslog(LOG_NOTICE, "Got SIGTERM, shutting down");
			break;
	case SIGSEGV:   syslog(LOG_NOTICE, "Got SIGSEGV, shutting down");
			my_shutdown = TRUE;
			exit(SIGSEGV);
			break;
	default:        syslog(LOG_NOTICE, "die() on signal %d", onsig);
    }

    my_shutdown = TRUE;
}


void tempstatus(void)
{
    char	text[81];

    snprintf(text, 8, "%6.2f\001", hltInput);
#ifdef HAVE_WIRINGPI_H
    piLock(LOCK_LCD);
    lcdPosition(lcdHandle, 1, 1);
    lcdPuts(lcdHandle, text);
#endif
    slcdPosition(slcdHandle, 1, 1);
    slcdPuts(slcdHandle, text);

    snprintf(text, 8, "%6.2f\001", mltInput);
#ifdef HAVE_WIRINGPI_H
    piLock(LOCK_LCD);
    lcdPosition(lcdHandle, 10, 1);
    lcdPuts(lcdHandle, text);
#endif
    slcdPosition(slcdHandle, 10, 1);
    slcdPuts(slcdHandle, text);
}


/*
 * Third line, show setPoints or heater percentage.
 */
void percstatus(int which)
{
    char	text[21];

    if (which)
	snprintf(text, 8, "%6.2f\002", hltSetpoint);
    else
    	snprintf(text, 8, "HLT%3d%%", (int)hltOutput);
#ifdef HAVE_WIRINGPI_H
    piLock(LOCK_LCD);
    lcdPosition(lcdHandle, 1, 2);
    lcdPuts(lcdHandle, text);
#endif
    slcdPosition(slcdHandle, 1, 2);
    slcdPuts(slcdHandle, text);

    if (which)
	snprintf(text, 8, "%6.2f\002", mltSetpoint);
    else
    	snprintf(text, 8, "MLT%3d%%", (int)mltOutput);
#ifdef HAVE_WIRINGPI_H
    piLock(LOCK_LCD);
    lcdPosition(lcdHandle, 10, 2);
    lcdPuts(lcdHandle, text);
#endif
    slcdPosition(slcdHandle, 10, 2);
    slcdPuts(slcdHandle, text);
}


/*
 * Third line during boil, only MLT status
 */
void mltstatus(void)
{
    char        text[21];

    snprintf(text, 20, "MLT %3d%%  %6.2f\002      ", (int)mltOutput, mltSetpoint);
#ifdef HAVE_WIRINGPI_H
    piLock(LOCK_LCD);
    lcdPosition(lcdHandle, 0, 2);
    lcdPuts(lcdHandle, text);
#endif
    slcdPosition(slcdHandle, 0, 2);
    slcdPuts(slcdHandle, text);
}


void timestatus(int row, int timeval)
{
    char	text[21];
    int		hours, mins, val = timeval;

    hours = val / 3600;
    val -= (hours * 3600);
    mins = val / 60;
    val -= (mins * 60);
 
    snprintf(text, 20, "      %02d:%02d:%02d      ", hours, mins, val);
#ifdef HAVE_WIRINGPI_H
    piLock(LOCK_LCD);
    lcdPosition(lcdHandle, 0, row);
    lcdPuts(lcdHandle, text);
#endif
    slcdPosition(slcdHandle, 0, row);
    slcdPuts(slcdHandle, text);
}


int set_HLT_heater(units_list *unit, int state, double val)
{
    if (strcmp(unit->hlt_heater.uuid, (char *)"00000000-0000-0000-0000-000000000000") == 0)
	return 0;

    hltSetpoint = val;

    if (state && (PID_getMode(unit->PID_hlt) == P_MANUAL)) {
	hlt_status(1);
	PID_setMode(unit->PID_hlt, P_AUTOMATIC);
	return 1;
    }
    if (! state && (PID_getMode(unit->PID_hlt) == P_AUTOMATIC)) {
	hlt_status(0);
	PID_setMode(unit->PID_hlt, P_MANUAL);
	return 1;
    }

    return 0;
}


int set_MLT_heater(units_list *unit, int state, double val)
{
    if (strcmp(unit->mlt_heater.uuid, (char *)"00000000-0000-0000-0000-000000000000") == 0)
	return 0;

    mltSetpoint = val;

    if (state && (PID_getMode(unit->PID_mlt) == P_MANUAL)) {
	mlt_status(1);
	PID_setMode(unit->PID_mlt, P_AUTOMATIC);
	return 1;
    }
    if (! state && (PID_getMode(unit->PID_mlt) == P_AUTOMATIC)) {
	mlt_status(0);
	PID_setMode(unit->PID_mlt, P_MANUAL);
	return 1;
    }

    return 0;
}


int set_MLT_pump(units_list *unit, int state)
{
    if (strcmp(unit->mlt_pump.uuid, (char *)"00000000-0000-0000-0000-000000000000") == 0)
	return 0;

    if (state && ! mlt_pump_state) {
	device_out(unit->mlt_pump.uuid, 1);
	mlt_pump_state = 1;
	return 1;
    }
    if (! state && mlt_pump_state) {
	device_out(unit->mlt_pump.uuid, 0);
	mlt_pump_state = 0;
	return 1;
    }

    return 0;
}


void automatic_brew(units_list *, brew_session *, a_recipe *, int, int);
void automatic_brew(units_list *unit, brew_session *brew, a_recipe *recipe, int dosave, int seconds)
{
    int		key, save = dosave, i;
    char	data[128];
    static int	mash_fase = MASH_NA, hopstand = 0, last_step = STEP_NA, last_fase = -1, oldsec = 75, startdelay = 0;

    if (brew->brewstep != last_step) {
	snprintf(data, 40, brewstep_name(last_step));
	syslog(LOG_NOTICE, "AUTO: brewstep %s to %s", data, brewstep_name(brew->brewstep));
    }

    switch (brew->brewstep) {
	case STEP_NA:		if (debug)
				    fprintf(stdout, "auto: init recipe: %s-%s  unit: %s\n", recipe->code, recipe->name, unit->name);
				syslog(LOG_NOTICE, "AUTO: starting new brew, recipe: %s-%s  unit: %s", recipe->code, recipe->name, unit->name);
				brew->brewstep = STEP_BREWINIT;
				break;

	case STEP_BREWINIT:	prompt(103, NULL);		/* "   AUTOMATIC MODE   " */
				prompt(207, NULL);		/* "    Delay start?    " */
				prompt(300, NULL);		/* "                    " */
				prompt(407, NULL);		/* "---  ---   No   Yes " */
				if (debug)
					fprintf(stdout, "step brewinit\n");
				key = keywait();
				if (key == KEY_RETURN) {
				    brew->brewstep = STEP_WATERCHECK;
				    startdelay = 0;
				    syslog(LOG_NOTICE, "AUTO: brew initialize, direct start selected");
				    break;
				}
				if (key == KEY_ENTER) {
				    startdelay = 30;
				    editInteger(&startdelay, 10, 960, 10, (char *)"Start delay", (char *)"mins");
				}
				syslog(LOG_NOTICE, "AUTO: brew initialize");
				brew->brewstep = STEP_WATERCHECK;
				break;

	case STEP_WATERCHECK:	if (brew->brewstep != last_step) {
				    prompt(111, NULL);		/* "AUTO --> Mash In    " */
				    prompt(209, NULL);		/* "    Water Added?    " */
				    prompt(300, NULL);
				    prompt(407, NULL);          /* "---  ---   No   Yes " */
				    last_step = brew->brewstep;
				}
				slcdDummy(slcdHandle);
				key = keycheck();
				if (key == KEY_ENTER) {
				    brew->brewstep = STEP_PUMPPRIME;
				    syslog(LOG_NOTICE, "AUTO: confirmed water added");
				}
				if (key == KEY_RETURN) {
				    syslog(LOG_NOTICE, "AUTO: aborted water added");
				    brew->brewstep = STEP_CLEANUP;
				}
				break;

	case STEP_PUMPPRIME:	if (brew->brewstep != last_step) {
				    prompt(100, NULL);		/* "                    " */
				    prompt(210, NULL);		/* "     Pump Prime     " */
				    prompt(300, NULL);		/* "                    " */
				    prompt(400, NULL);		/* "                    " */
				    hlt_status(0);
				    mlt_status(0);
				    last_step = brew->brewstep;
				}
				for (i = 1; i < 6; i++) {
				    if (set_MLT_pump(unit, 1))
					syslog(LOG_NOTICE, "AUTO: pump prime %d turn %s MLT pump", i, mlt_pump_state ? "on":"off");
				    usleep(750000 + (i * 250000));	/* 250 + i * 250 mSec */
				    if (set_MLT_pump(unit, 0))
					syslog(LOG_NOTICE, "AUTO: pump prime %d turn %s MLT pump", i, mlt_pump_state ? "on":"off");
				    usleep(350000);			/* 350 mSec */
				}
				brew->brewstep = STEP_WAITSTART;
				break;

	case STEP_WAITSTART:	if (startdelay == 0) {
				    brew->brewstep = STEP_PREMASH;
				    break;
				}
				if (brew->brewstep != last_step) {
				    brew->timeout = startdelay * 60;
				    prompt(111, NULL);          /* "AUTO --> Mash In    " */
				    prompt(212, NULL);          /* "  To be started in  " */
				    prompt(410, NULL);          /* " Continue: Yes  No  " */
				    last_step = brew->brewstep;
				}
				if (oldsec != seconds) {
				    timestatus(2, brew->timeout);
				    brew->timeout--;
				    if (brew->timeout <= 0) {
					syslog(LOG_NOTICE, "AUTO: delayed start time reached");
					brew->brewstep = STEP_PREMASH;
				    }
				    oldsec = seconds;
				}
				slcdDummy(slcdHandle);
				key = keycheck();
				if (key == KEY_RETURN) {
				    syslog(LOG_NOTICE, "AUTO: delayed start skipped by user");
				    brew->brewstep = STEP_PREMASH;
				}
				break;

	case STEP_PREMASH:	if (brew->brewstep != last_step) {
				    prompt(111, NULL);     	/* "AUTO --> Prepare    " */
				    prompt(300, NULL);          /* "                    " */
				    prompt(418, NULL);          /* "---  ---  Pause --- " */
				    tempstatus();
				    hlt_status(1);
				    mlt_status(1);
				    pump_status(unit->pump_premash);
				    last_step = brew->brewstep;
				    initlog(brew->name);
				}
				if (set_HLT_heater(unit, 1, 85.0))
				    syslog(LOG_NOTICE, "AUTO: premash turn on HLT at %6.2f", hltSetpoint);
				if (set_MLT_heater(unit, 1, 10.0))
				    syslog(LOG_NOTICE, "AUTO: premash turn on MLT at %6.2f", mltSetpoint);
				if (set_MLT_pump(unit, unit->pump_premash))
				    syslog(LOG_NOTICE, "AUTO: premash turn %s MLT pump", mlt_pump_state ? "on":"off");
				if (hltInput >= 85.0) {
				    brew->brewstep = STEP_MASHING;
				    brew->mashstep = 0;
				    mash_fase = MASH_NA;
				    save = TRUE;
				}
				break;

	case STEP_MASHING:	if (brew->brewstep != last_step) {
				    prompt(111 + brew->mashstep, NULL);     /* "AUTO --> [mashname] " */
				    prompt(300, NULL);                      /* "                    " */
				    prompt(418, NULL);                      /* "---  ---  Pause --- " */
				    tempstatus();
				    hlt_status(1);
				    mlt_status(1);
				    pump_status(unit->pump_onmash);
				    last_step = brew->brewstep;
				}
				if (set_HLT_heater(unit, 1, 85.0))
				    syslog(LOG_NOTICE, "AUTO: mash turn on HLT at %6.2f", hltSetpoint);
				if (set_MLT_heater(unit, 1, recipe->mash[brew->mashstep].setpoint))
				    syslog(LOG_NOTICE, "AUTO: mash turn on MLT at %6.2f", mltSetpoint);

				switch (mash_fase) {
				    case MASH_NA:	if (recipe->mash[brew->mashstep].skip) {
							    syslog(LOG_NOTICE, "AUTO: skipping mash step %d", brew->mashstep);
							    brew->mashstep++;
							} else {
					    		    mltSetpoint = recipe->mash[brew->mashstep].setpoint;
							    brew->timeout = recipe->mash[brew->mashstep].duration * 60;
							    mash_fase = MASH_HEATING;
							    syslog(LOG_NOTICE, "AUTO: mash step %d fase NA, setpoint %6.2f, duration %d", 
									brew->mashstep, mltSetpoint, brew->timeout);
							}
							if (brew->mashstep == 0) {
							    brew->starttime = time(NULL);
							    save = TRUE;
							}
					    		break;

				    case MASH_PROMPT:	if (last_fase != mash_fase) {
							    prompt(111 + brew->mashstep, NULL);	/* "AUTO --> [mashname] " */
							    prompt(219, NULL);              	/* "    Mash added?     " */
							    prompt(300, NULL);
							    prompt(407, NULL);              	/* "---  ---   No   Yes " */
							    last_fase = mash_fase;
							}
							if (set_MLT_pump(unit, 0))	/* Off during mash add */
							    syslog(LOG_NOTICE, "AUTO: mash turn %s MLT pump", mlt_pump_state ? "on":"off");
							slcdDummy(slcdHandle);
							key = keycheck();
							if (key == KEY_ENTER) {
							    mash_fase = MASH_NA;
							    brew->mashstep++;
							    syslog(LOG_NOTICE, "AUTO: confirmed mash added");
							}
							if (key == KEY_RETURN) {
							    syslog(LOG_NOTICE, "AUTO: aborted mash added");
							    brew->brewstep = STEP_CLEANUP;
							    brew->mashstep = 0;
							}
							break;

				    case MASH_IODINE:	if (last_fase != mash_fase) {
							    prompt(118, NULL);          /* "AUTO --> Mash Out   " */
							    prompt(213, NULL);          /* "    Iodine test     " */
							    timestatus(2, brew->timeout);
							    prompt(410, NULL);          /* " Continue: Yes  No  " */
							    last_fase = mash_fase;
							}
							if (set_MLT_pump(unit, unit->pump_onmash))
							    syslog(LOG_NOTICE, "AUTO: mash turn %s MLT pump", mlt_pump_state ? "on":"off");
							if (oldsec != seconds) {
							    brew->timeout--;
							    timestatus(2, brew->timeout);
							    if (brew->timeout <= 0) {
								syslog(LOG_NOTICE, "AUTO: mash IODINE test timeout");
								mash_fase = MASH_NA;
								brew->mashstep++;
							    }
							    oldsec = seconds;
							}
							slcdDummy(slcdHandle);
							key = keycheck();
							if (key == KEY_RETURN) {
							    syslog(LOG_NOTICE, "AUTO: mash IODINE test confirmed");
							    mash_fase = MASH_NA;
							    brew->mashstep++;
							}
							if (key == KEY_ENTER) {
							    syslog(LOG_NOTICE, "AUTO: mash IODINE test declined");
							    mash_fase = MASH_REST;
							    brew->timeout = 600;	/* Add 10 more minutes */
							}
							break;

				    case MASH_HEATING:	if (last_fase != mash_fase) {
							    prompt(111 + brew->mashstep, NULL);     /* "AUTO --> [mashname] " */
							    prompt(200, NULL);
							    prompt(300, NULL);
							    prompt(418, NULL);                      /* "---  ---  Pause --- " */
							    hlt_status(1);
							    mlt_status(1);
							    pump_status(unit->pump_onmash);
							    last_fase = mash_fase;
							}
							if (set_MLT_pump(unit, unit->pump_onmash))
							    syslog(LOG_NOTICE, "AUTO: mash turn %s MLT pump", mlt_pump_state ? "on":"off");
							if (oldsec != seconds) {
							    tempstatus();
							    percstatus((seconds / 2) % 4);
							    oldsec = seconds;
							}
							if (mltInput > mltSetpoint) {
							    syslog(LOG_NOTICE, "AUTO: mash step %d fase HEATING reached %6.2f", brew->mashstep, mltSetpoint);
							    mash_fase = MASH_REST;
							}
							break;

				    case MASH_REST:	if (last_fase != mash_fase) {
							    prompt(111 + brew->mashstep, NULL);     /* "AUTO --> [mashname] " */
							    prompt(200, NULL);
							    prompt(300, NULL);
							    prompt(418, NULL);                      /* "---  ---  Pause --- " */
							    hlt_status(1);
							    mlt_status(1);
							    pump_status(unit->pump_onmash);
							    last_fase = mash_fase;
							}
							if (oldsec != seconds) {
							    tempstatus();
							    timestatus(2, brew->timeout);
							    if (brew->mashstep == 7) {
								/*
								 * During mash-out rest, allow the grain to sink
								 */
								if (set_MLT_pump(unit, unit->pump_mashout))
								    syslog(LOG_NOTICE, "AUTO: mash-out turn %s MLT pump", mlt_pump_state ? "on":"off");
							    } else {
								if (set_MLT_pump(unit, unit->pump_onmash))
								    syslog(LOG_NOTICE, "AUTO: mash turn %s MLT pump", mlt_pump_state ? "on":"off");
							    }
							    brew->timeout--;
							    if (brew->timeout <= 0) {
								syslog(LOG_NOTICE, "AUTO: mash step %d fase REST done", brew->mashstep);
								if ((brew->mashstep == 0) && ! unit->skip_add) {
								    mash_fase = MASH_PROMPT;
								} else if ((brew->mashstep == 6) && ! unit->skip_iodine) {
								    mash_fase = MASH_IODINE;
								    brew->timeout = unit->iodine_time * 60;
								} else if (brew->mashstep == 7) {
								    mash_fase = MASH_DONE;
								} else {
								    mash_fase = MASH_NA;
								    brew->mashstep++;
								}
							    }
							    oldsec = seconds;
							}
							break;

				    case MASH_DONE:	syslog(LOG_NOTICE, "AUTO: mash step %d fase DONE", brew->mashstep);
							if (set_MLT_heater(unit, 1, recipe->mash[7].setpoint))
							    syslog(LOG_NOTICE, "AUTO: mash done turn MLT off");
							if (set_MLT_pump(unit, 0))
							    syslog(LOG_NOTICE, "AUTO: mash done turn %s MLT pump", mlt_pump_state ? "on":"off");
							brew->mashstep = 0;
							brew->brewstep = STEP_MASHREMOVE;
							break;
				}
				break;

	case STEP_MASHREMOVE:	if (unit->skip_remove) {
				    syslog(LOG_NOTICE, "AUTO: skipping Mash remove");
				    brew->brewstep = STEP_PREBOIL;
				} else {
				    if (brew->brewstep != last_step) {
					prompt(118, NULL);          /* "AUTO --> Mash Out   " */
					prompt(220, NULL);          /* "   Mash Removed?    " */
					prompt(300, NULL);
					prompt(410, NULL);          /* " Continue: Yes  No  " */
					last_step = brew->brewstep;
				    }
				    slcdDummy(slcdHandle);
				    key = keycheck();
				    if (key == KEY_RETURN) {
					syslog(LOG_NOTICE, "AUTO: Confirmed Mash removed");
					brew->brewstep = STEP_PREBOIL;
				    }
				}
				break;

	case STEP_PREBOIL:	if (brew->brewstep != last_step) {
				    prompt(119, NULL);          /* "AUTO --> Boil       " */
				    prompt(200, NULL);
				    prompt(300, NULL);
				    tempstatus();
				    mltstatus();
				    prompt(418, NULL);          /* "---  ---  Pause --- " */
				    hlt_status(0);
				    mlt_status(1);
				    pump_status(unit->pump_onboil && (mltInput < unit->pump_stop));
				    last_step = brew->brewstep;
				}
				if (oldsec != seconds) {
				    tempstatus();
				    mltstatus();
				    oldsec = seconds;
				}
				if (set_HLT_heater(unit, 0, 10.0))
				    syslog(LOG_NOTICE, "AUTO: preboil turn off HLT");
				if (set_MLT_heater(unit, 1, 100.0))
				    syslog(LOG_NOTICE, "AUTO: preboil turn on MLT to boil");
				if (set_MLT_pump(unit, unit->pump_onboil && (mltInput < unit->pump_stop)))
				    syslog(LOG_NOTICE, "AUTO: preboil turn %s MLT pump", mlt_pump_state ? "on":"off");
				if (mltInput > 99.2) {
				    syslog(LOG_NOTICE, "AUTO: reached boil temperature %.2f, start %d minutes boil", mltInput, recipe->boiltime);
				    brew->brewstep = STEP_BOILING;
				    brew->boiltimer = recipe->boiltime * 60;
				}
				break;

	case STEP_BOILING:	if (set_HLT_heater(unit, 0, 10.0))
				    syslog(LOG_NOTICE, "AUTO: boil turn off HLT");
				if (set_MLT_heater(unit, 1, 100.0))
				    syslog(LOG_NOTICE, "AUTO: boil turn on MLT to boil");
				if (set_MLT_pump(unit, unit->pump_onboil && (mltInput < unit->pump_stop)))
				    syslog(LOG_NOTICE, "AUTO: boil turn %s MLT pump", mlt_pump_state ? "on":"off");
				if (brew->brewstep != last_step) {
				    prompt(119, NULL);          /* "AUTO --> Boil       " */
				    prompt(200, NULL);
				    prompt(300, NULL);
				    tempstatus();
				    mltstatus();
				    prompt(418, NULL);          /* "---  ---  Pause --- " */
				    hlt_status(0);
				    mlt_status(1);
				    pump_status(unit->pump_onboil && (mltInput < unit->pump_stop));
				    last_step = brew->brewstep;
				}
				if (oldsec != seconds) {
				    tempstatus();
				    if ((seconds / 2) % 4) {
				        timestatus(2, brew->boiltimer);
				    } else {
					mltstatus();
				    }
				    if (brew->boiltimer >= 0) {
				    	brew->boiltimer--;
				    } else {
					brew->brewstep = STEP_BOILDONE;
				        syslog(LOG_NOTICE, "AUTO: boil is done");
				    }
				    oldsec = seconds;
				}
				break;

	case STEP_BOILDONE:	if (set_MLT_heater(unit, 0, 10.0))
				    syslog(LOG_NOTICE, "AUTO: after boil turn off MLT heater");
				if (set_MLT_pump(unit, 0))
				    syslog(LOG_NOTICE, "AUTO: after boil turn %s MLT pump", mlt_pump_state ? "on":"off");
				if (brew->brewstep != last_step) {
				    prompt(120, NULL);          /* "AUTO --> Cooling    " */
				    prompt(214, NULL);          /* "   START COOLING    " */
				    prompt(300, NULL);
				    prompt(410, NULL);		/* " Continue: Yes  No  " */
				    last_step = brew->brewstep;
				}
				slcdDummy(slcdHandle);
				key = keycheck();
				if (key == KEY_ENTER) {
				    brew->brewstep = STEP_CLEANUP;
				    syslog(LOG_NOTICE, "AUTO: user skipped cooling");
				}
				if (key == KEY_RETURN) {
				    brew->brewstep = STEP_COOLING;
				    syslog(LOG_NOTICE, "AUTO: user started cooling");
				}
				break;

	case STEP_COOLING:	for (i = 0; i < 3; i++) {
				    if ((recipe->hopstand[i].skip == 0) && (mltInput <= recipe->hopstand[i].max) && (mltInput >= recipe->hopstand[i].min)) {
				        brew->brewstep = STEP_HOPSTAND;
					hopstand = i;
					syslog(LOG_NOTICE, "AUTO: starting hopstand %d", i+1);
				    }
				}
				if (brew->brewstep == STEP_HOPSTAND)
				    break;
				// hot whirlpool start at 85 degrees
				// cold whirlpool start at 30 degrees

				if (brew->brewstep != last_step) {
				    prompt(120, NULL);          /* "AUTO --> Cooling    " */
				    prompt(200, NULL);
				    tempstatus();
				    prompt(300, NULL);
				    prompt(418, NULL);          /* "---  ---  Pause --- " */
				    hlt_status(0);
				    mlt_status(0);
				    pump_status(0);
				    last_step = brew->brewstep;
				}
				if (oldsec != seconds) {
				    tempstatus();
				    oldsec = seconds;
				}
				if (mltInput <= recipe->coolto) {
				    syslog(LOG_NOTICE, "AUTO: cool temperture %.2f reached", recipe->coolto);
				    brew->brewstep = STEP_CLEANUP;
				}
				break;

	case STEP_HOPSTAND:	if (brew->brewstep != last_step) {
				    prompt(122 + hopstand, NULL);	/* "AUTO --> Hopstand n " */
				    tempstatus();
				    timestatus(2, brew->timeout);
				    prompt(418, NULL);			/* "---  ---  Pause --- " */
				    brew->boiltimer = recipe->hopstand[hopstand].duration * 60;
				    last_step = brew->brewstep;
				}

				if (recipe->hopstand[hopstand].hold) {
				    if (set_MLT_heater(unit, 1, recipe->hopstand[hopstand].setpoint))
					syslog(LOG_NOTICE, "AUTO: hopstand 1 turn on MLT at %6.2f", mltSetpoint);
				}
				if (set_MLT_pump(unit, 1))
				    syslog(LOG_NOTICE, "AUTO: hopstand 1 turn %s MLT pump", mlt_pump_state ? "on":"off");
				if (oldsec != seconds) {
				    tempstatus();
				    timestatus(2, brew->timeout);
				    brew->boiltimer--;
				    if (brew->boiltimer <= 0) {
					syslog(LOG_NOTICE, "AUTO: hopstand %d done", hopstand+1);
					if (set_MLT_heater(unit, 0, 10.0))
					    syslog(LOG_NOTICE, "AUTO: hopstand 1 turn off MLT at %6.2f", mltSetpoint);
					brew->brewstep = STEP_COOLING;
				    }
				    oldsec = seconds;
				}
				break;

	case STEP_WHIRLPOOL:	prompt(121, NULL);		/* "AUTO --> Whirlpool  " */
				break;

	case STEP_CLEANUP:	if (brew->brewstep != last_step) {
				    prompt(101, NULL);              /* "    Brewco x.x.x    " */
				    prompt(200, NULL);              /* "                    " */
				    prompt(300, NULL);              /* "                    " */
				    prompt(400, NULL);              /* "                    " */
				    last_step = brew->brewstep;
				}
				syslog(LOG_NOTICE, "AUTO: cleanup");
				if (set_HLT_heater(unit, 0, 10.0))
				    syslog(LOG_NOTICE, "AUTO: cleanup turn on HLT at %6.2f", hltSetpoint);
				if (set_MLT_heater(unit, 0, 10.0))
				    syslog(LOG_NOTICE, "AUTO: cleanup turn on MLT at %6.2f", mltSetpoint);
				if (set_MLT_pump(unit, 0))
				    syslog(LOG_NOTICE, "AUTO: cleanup turn %s MLT pump", mlt_pump_state ? "on":"off");
				brew->brewstep = STEP_BREWDONE;
				break;

	case STEP_BREWDONE:	if (brew->brewstep != last_step) {
				    prompt(101, NULL);              /* "    Brewco x.x.x    " */
				    prompt(200, NULL);              /* "                    " */
				    prompt(301, NULL);              /* "      Finished      " */
				    prompt(408, NULL);              /* "---  ---   Ok   --- " */
				    last_step = brew->brewstep;
				}
				syslog(LOG_NOTICE, "AUTO: brew done");
				brew->brewstep = -1;
				brew->endtime = time(NULL);
				save = TRUE;
				do {
				    key = keywait();
				} while (key != KEY_RETURN);
				/*
				 * Rewrite the display
				 */
				prompt(101, NULL);      	/* "    Brewco x.x.x    " */
				tempstatus();
				prompt(300, NULL);      	/* "                    " */
				prompt(401, NULL);      	/* "---  MAN  AUTO SETUP" */
				break;
    }

    if (save) {
	snprintf(data, 127, "%d,%.2f,%.2f,%.2f,%.2f,%.2f,%.2f", brew->brewstep,
			hltInput, hltOutput, hltSetpoint, mltInput, mltOutput, mltSetpoint);
	logger(brew->name, data);
	wrsession(brew);
    }
}


void manual_prompt(void)
{
    switch (manual) {
	case MANUAL_SELHLT:	prompt(104, NULL);      /* "    MANUAL MODE     " */
				prompt(303, NULL);      /* "     Manual HLT     " */
				prompt(402, NULL);      /* "---  dwn  quit  ok  " */
				break;
	case MANUAL_SELMLT:	prompt(104, NULL);      /* "    MANUAL MODE     " */
				prompt(304, NULL);      /* "     Manual MLT     " */
				prompt(404, NULL);      /* " up  ---  quit  ok  " */
				break;
	case MANUAL_HLT:	prompt(104, NULL);      /* "    MANUAL MODE     " */
				prompt(300, NULL);	/* "                    " */
				prompt(413, NULL);      /* "UP* *DWN  heat  --- " */
				break;
	case MANUAL_MLT:	prompt(104, NULL);      /* "    MANUAL MODE     " */
				prompt(300, NULL);	/* "                    " */
				prompt(406, NULL);      /* "UP* *DWN  heat  pmp " */
				break;
    }
}


/*
 * Manual menu for testing your equipment.
 */
int manual_menu(units_list *, int);
int manual_menu(units_list *unit, int seconds)
{
    int		key;

    switch (manual) {
        case MANUAL_SELHLT:     slcdDummy(slcdHandle);
				key = keycheck();
                                if (key == KEY_DOWN) {
                                    manual = MANUAL_SELMLT;
				    manual_prompt();
				}
                                if (key == KEY_RETURN) {
                                    manual = MANUAL_NONE;
				    mlt_pump_state = 0;
				    PID_setMode(unit->PID_mlt, P_MANUAL);
				    PID_setMode(unit->PID_hlt, P_MANUAL);
				    hlt_status(0);
				    mlt_status(0);
				    device_out(unit->mlt_pump.uuid, mlt_pump_state);
				}
                                if (key == KEY_ENTER) {
                                                // TODO: prompt for water
                                    manual = MANUAL_HLT;
				    manual_prompt();
                                }
                                break;
        case MANUAL_SELMLT:     slcdDummy(slcdHandle);
				key = keycheck();
                                if (key == KEY_UP) {
                                    manual = MANUAL_SELHLT;
				    manual_prompt();
				}
                                if (key == KEY_RETURN) {
                                    manual = MANUAL_NONE;
				    mlt_pump_state = 0;
				    PID_setMode(unit->PID_mlt, P_MANUAL);
				    PID_setMode(unit->PID_hlt, P_MANUAL);
				    hlt_status(0);
				    mlt_status(0);
				    device_out(unit->mlt_pump.uuid, mlt_pump_state);
				}
                                if (key == KEY_ENTER) {
                                                // TODO: prompt for water
                                    manual = MANUAL_MLT;
				    manual_prompt();
                                }
                                break;
        case MANUAL_HLT:        tempstatus();
				percstatus((seconds / 2) % 4);

				slcdDummy(slcdHandle);
                                key = keycheck();
                                if (key == KEY_RETURN) {
				    if (PID_getMode(unit->PID_hlt) == P_MANUAL) {
					PID_setMode(unit->PID_hlt, P_AUTOMATIC);
					hlt_status(1);
				    } else {
					PID_setMode(unit->PID_hlt, P_MANUAL);
					hlt_status(0);
				    }
                                }
				if ((key == KEY_DOWN) && (hltSetpoint > 10))
				    hltSetpoint -= 1.0;
				if ((key == KEY_UP) && (hltSetpoint < 100))
				    hltSetpoint += 1.0;
                                if (key == KEY_ESCAPE) {
                                    manual = MANUAL_SELHLT;
				    manual_prompt();
                                }
                                break;
        case MANUAL_MLT:        tempstatus();
				percstatus((seconds / 2) % 4);

				slcdDummy(slcdHandle);
				key = keycheck();
                                if (key == KEY_RETURN) {
				    if (PID_getMode(unit->PID_mlt) == P_MANUAL) {
					PID_setMode(unit->PID_mlt, P_AUTOMATIC);
					mlt_status(1);
				    } else {
					PID_setMode(unit->PID_mlt, P_MANUAL);
					mlt_status(0);
				    }
                                }
				if ((key == KEY_DOWN) && (mltSetpoint > 10))
				    mltSetpoint -= 1.0;
				if ((key == KEY_UP) && (mltSetpoint < 100))
				    mltSetpoint += 1.0;
                                if (key == KEY_ENTER) {
                                    if (mlt_pump_state)
					set_MLT_pump(unit, 0);
				    else
					set_MLT_pump(unit, 1);
                                }
                                if (key == KEY_ESCAPE) {
                                    manual = MANUAL_SELMLT;
				    manual_prompt();
                                }
                                device_out(unit->mlt_pump.uuid, mlt_pump_state);
                                break;
    }

    return 0;
}


char *choose_recipe(void);
char *choose_recipe(void)
{
    int			total, i, key, choice = 1;
    static char		uuid[37];
    a_recipe		*recipe;
    char		pmpt[81];

    strcpy(uuid, (char *)"00000000-0000-0000-0000-000000000000");
    for (;;) {
	total = 0;
	for (recipe = recipes; recipe; recipe = recipe->next)
	    total++;

	if (total == 0)
	    return uuid;

	i = 0;
	for (recipe = recipes; recipe; recipe = recipe->next) {
	    i++;
	    if (i == choice)
		break;
	}

	prompt(102, NULL);          /* "     SETUP MENU     " */
	prompt(221, NULL);          /* "   Select Recipe    " */
	if (total) {
	    snprintf(pmpt, Config.lcd_cols + 1, "%s %s                   ", recipe->code, recipe->name);
	    prompt(300, pmpt);
	}
	if (total == 1)
	    prompt(405, NULL);      /* "---  ---  quit  ok  " */
	else if (choice == 1)
	    prompt(402, NULL);      /* "---  dwn  quit  ok  " */
	else if (choice == total)
	    prompt(404, NULL);      /* " up  ---  quit  ok  " */
	else
	    prompt(403, NULL);      /* " up  dwn  quit  ok  " */

	key = keywait();
	if ((key == KEY_RETURN) || my_shutdown)
	    return uuid;
	if (key == KEY_ENTER) {
	    strcpy(uuid, recipe->uuid);
	    return uuid;
	}
	if ((key == KEY_UP) && (total > 1) && (choice > 1)) {
	    choice--;
	}
	if ((key == KEY_DOWN) && (total > 1) && (choice < total))
	    choice++;
    }
}


int server(void);
int server(void)
{
    int 		rc = 0, run = 1, dosave, key, temp, MLTp, HLTp, percslot, percfase = PERC_INIT;
    int			do_init = TRUE, seconds = 0, minutes = 0;
    units_list		*unit;
    a_recipe		*recipe = NULL;
    brew_session	*brew = NULL;
#ifndef HAVE_WIRINGPI_H
    long		t = 0;
#endif
    time_t		now, last = (time_t)0;
    long		nowmillis, perctimer;
    struct tm		*tm;

    prompt(101, NULL);

    /*
     * Define special characters in the display CGRAM
     */
    if (Config.tempFormat == 'C')
    	slcdCharDef(slcdHandle, 1, degC);
    else
	slcdCharDef(slcdHandle, 1, degF);
    slcdCharDef(slcdHandle, 2, SP_Symbol);
    slcdCharDef(slcdHandle, 3, PumpONOFF);
    slcdCharDef(slcdHandle, 4, RevPumpONOFF);
    slcdCharDef(slcdHandle, 5, HeatONOFF);
    slcdCharDef(slcdHandle, 6, RevHeatONOFF);
    slcdCharDef(slcdHandle, 7, Language);

    if (lockprog((char *)"brewco")) {
	syslog(LOG_NOTICE, "Can't lock");
	return 1;
    }

    if (debug)
	fprintf(stdout, "Begin server()\n");

    if ((rc = devices_detect())) {
	syslog(LOG_NOTICE, "Detected %d new devices", rc);
	if (debug)
	    fprintf(stdout, "Detected %d new devices\n", rc);
	wrconfig();
    }

#ifdef HAVE_WIRINGPI_H
    rc = piThreadCreate(my_devices_loop);
#else
    rc = pthread_create(&threads[t], NULL, my_devices_loop, (void *)t );
#endif
    if (rc) {
	fprintf(stderr, "my_devices_loop thread didn't start rc=%d\n", rc);
	syslog(LOG_NOTICE, "my_devices_loop thread didn't start rc=%d", rc);
#ifndef HAVE_WIRINGPI_H
    } else {
	t++;
#endif
    }

#ifdef HAVE_WIRINGPI_H
    rc = piThreadCreate(my_keyboard_loop);
#else
    rc = pthread_create(&threads[t], NULL, my_keyboard_loop, (void *)t );
#endif
    if (rc) {
	fprintf(stderr, "my_keyboard_loop thread didn't start rc=%d\n", rc);
	syslog(LOG_NOTICE, "my_keyboard_loop thread didn't start rc=%d", rc);
#ifndef HAVE_WIRINGPI_H
    } else {
	t++;
#endif
    }

#ifdef USE_SIMULATOR
#ifdef HAVE_WIRINGPI_H
    rc = piThreadCreate(my_simulator_loop);
#else
    rc = pthread_create(&threads[t], NULL, my_simulator_loop, (void *)t );
#endif
    if (rc) {
	fprintf(stderr, "my_simulator_loop thread didn't start rc=%d\n", rc);
	syslog(LOG_NOTICE, "my_simulator_loop thread didn't start rc=%d", rc);
#ifndef HAVE_WIRINGPI_H
    } else {
	t++;
#endif
    }
#endif

    if (! Config.units) {
	/*
	 * No brewsystems defined, add the first
	 */
	prompt(218, NULL);	/*   Add Brewsystem?   */
	prompt(407, NULL);	/* ---  ---   Ok   --- */

	do {
	    key = keywait();
	} while (key != KEY_RETURN);

	if (key == KEY_RETURN) {
	    addUnit(1);
	}
    }

    /*
     * Initialize units for processing
     */
    for (unit = Config.units; unit; unit = unit->next) {
	if (unit->active)
	    break;
    }

    if (! unit->active) {
	fprintf(stdout, "No active units found\n");
    }

    /*
     * Safety, turn everything off
     */
    if (unit->active) {
	if (debug)
	    fprintf(stdout, "Starting brewsystem %d `%s'\n", unit->number, unit->name);
	syslog(LOG_NOTICE, "Starting brewsystem %d `%s'", unit->number, unit->name);
    }

    /*
     * During automation there will be a state file:
     * ~/.brewco/var/brewing.xml
     * If this file is present, there has been a crash.
     */
    brew = (brew_session *)malloc(sizeof(brew_session));
    rc = rdsession(brew);
    syslog(LOG_NOTICE, "rdsession: rc=%d", rc);
    if (debug)
	fprintf(stdout, "rdsession: rc=%d\n", rc);

    char *mypath = xstrcpy(etcpath);
    mypath = xstrcat(mypath, (char *)"brewing.xml");
    if (rc == 0) {
	if (debug)
	    fprintf(stdout, "Active brew session found\n");
    } else if (rc == -1) {
	free(brew);
	brew = NULL;
	if (debug)
	    fprintf(stdout, "No active brew session found\n");
    } else {
	unlink(mypath);
	free(brew);
	brew = NULL;
	if (debug)
	    fprintf(stdout, "Error brew session found\n");
    }
    free(mypath);
    mypath = NULL;

    do {
	if (my_shutdown) {
	    run = 0;
	    unit->hlt_heater.value = 0;
	    unit->mlt_heater.value = 0;
	    unit->mlt_pump.value = 0;
	    device_out(unit->hlt_heater.uuid, 0);
	    device_out(unit->mlt_heater.uuid, 0);
	    device_out(unit->mlt_pump.uuid, 0);
	    hlt_status(0);
	    mlt_status(0);
	    break;
	}

	/*
	 * Do we need to initialize this unit?
	 */
	if (do_init) {
	    if (debug)
		fprintf(stdout, "Initialize brewsystem %d `%s'\n", unit->number, unit->name);
	    syslog(LOG_NOTICE, "Initialize brewsystem %d `%s'", unit->number, unit->name);

	    prompt(0, NULL);
	    prompt(101, NULL);		/* "    Brewco x.x.x    " */
	    prompt(401, NULL);		/* "---  MAN  AUTO SETUP" */

	    /*
	     * Turn everything off
	     */
	    unit->hlt_heater.value = 0;
	    unit->mlt_heater.value = 0;
	    unit->mlt_pump.value = 0;
	    device_out(unit->hlt_heater.uuid, 0);
	    device_out(unit->mlt_heater.uuid, 0);
	    device_out(unit->mlt_pump.uuid, 0);

	    /*
	     * Initialize PID's
	     */
	    hltInput = hltSetpoint = mltInput = mltSetpoint = 20.0;
	    hltOutput = mltOutput = 0;
	    PID_init(unit->PID_hlt, &hltInput, &hltOutput, &hltSetpoint, unit->PID_hlt->dispKp, unit->PID_hlt->dispKi, unit->PID_hlt->dispKd, unit->PID_hlt->Direction);
	    PID_setOutputLimits(unit->PID_hlt, 0, 100);
	    PID_setSampleTime(unit->PID_hlt, unit->PID_hlt->SampleTime);
	    PID_init(unit->PID_mlt, &mltInput, &mltOutput, &mltSetpoint, unit->PID_mlt->dispKp, unit->PID_mlt->dispKi, unit->PID_mlt->dispKd, unit->PID_mlt->Direction);
	    PID_setOutputLimits(unit->PID_mlt, 0, 100);
	    PID_setSampleTime(unit->PID_mlt, unit->PID_mlt->SampleTime);
	    hlt_status(0);
	    mlt_status(0);

	    manual = MANUAL_NONE;

	    do_init = FALSE;
	    nowmillis = perctimer = millis();
	    percslot = 0;
	    percfase = PERC_INIT;
	    dosave = 0;

	    if (brew) {
		/*
		 * Restore session
		 */
		if (debug)
		    fprintf(stdout, "loop_init: restoring brew session\n");
	    	for (recipe = recipes; recipe; recipe = recipe->next) {
		    if (strcmp(recipe->uuid, brew->uuid_recipe) == 0) {
			break;
		    }
		}
		if (debug)
		    fprintf(stdout, "loop_init: brewstep=%d mashstep=%d recipe=%s\n", brew->brewstep, brew->mashstep, recipe->code);
	    }
	}

	/* run_pause code here */

	/*
	 * Update PID's, even if they are off. Both PID's will do
	 * the scheduling by themselves.
	 */
	rc = PID_compute(unit->PID_hlt);
	rc = PID_compute(unit->PID_mlt);

	/*
	 * This is the serial heaters schedule loop. The total
	 * loop time is 5 seconds, heating is 0..100% so we
	 * have 5 mSeconds timeslots. The MLT has priority over
	 * the HLT heater, so the HLT heater can get too little
	 * power. TODO: simultaneous use must be implemented.
	 * In sequentiel mode, the total drawn power is the same
	 * as the power used by the largest heater element.
	 */
	nowmillis = millis();
	if (nowmillis > (perctimer + 50)) {
	    percslot++;
	    if (percfase == PERC_INIT) {
		HLTp = (int)hltOutput;
		MLTp = (int)mltOutput;
		if ((MLTp + HLTp) > 100)
		    HLTp = 100 - MLTp;		/* The HLT has lower priority	*/
		if (MLTp) {
		    percfase = PERC_MLT;
		    device_out(unit->hlt_heater.uuid, 0);
		    device_out(unit->mlt_heater.uuid, 1);
		} else if (HLTp) {
		    percfase = PERC_HLT;
		    device_out(unit->hlt_heater.uuid, 1);
		    device_out(unit->mlt_heater.uuid, 0);
		} else { 
		    percfase = PERC_REST;
		    device_out(unit->hlt_heater.uuid, 0);
		    device_out(unit->mlt_heater.uuid, 0);
		}
//		if (debug)
//		    fprintf(stdout, "  perslot=%d MLT=%d%% HLT=%d%% fase=%d\n", percslot, MLTp, HLTp, percfase);
	    } else if (percfase == PERC_MLT) {
		if (percslot > MLTp) {
		    device_out(unit->mlt_heater.uuid, 0);
		    if (HLTp) {
			device_out(unit->hlt_heater.uuid, 1);
			percfase = PERC_HLT;
		    } else {
			percfase = PERC_REST;
		    }
		}
	    } else if (percfase == PERC_HLT) {
		if (percslot > (MLTp + HLTp)) {
		    device_out(unit->hlt_heater.uuid, 0);
		    percfase = PERC_REST;
		}
	    }
	    if (percslot == 100) {	/* End of the loop, start over */
		percslot = 0;
		percfase = PERC_INIT;
	    }
	    perctimer = nowmillis;
	}

	now = time(NULL);
	if (now != last) {
	    /*
	     * Each second
	     */
	    last = now;
	    seconds++;

	    if (seconds > 59) {
		seconds = 0;
		minutes++;
		dosave = 1;
	    }

	    rc = device_in(unit->hlt_sensor.uuid, &temp);
	    if (rc == DEVPRESENT_YES) {
		hltInput = temp / 1000.0;
		unit->hlt_sensor.state = 0;
	    } else if (rc == DEVPRESENT_ERROR) {
		unit->hlt_sensor.state = 1;
	    } else {
		unit->hlt_sensor.state = 2;
	    }
	    rc = device_in(unit->mlt_sensor.uuid, &temp);
	    if (rc == DEVPRESENT_YES) {
		mltInput = temp / 1000.0;
		unit->mlt_sensor.state = 0;
	    } else if (rc == DEVPRESENT_ERROR) {
		unit->mlt_sensor.state = 1;
	    } else {
		unit->mlt_sensor.state = 2;
	    }

	    if (debug && ((seconds % 10) == 1)) {
		fprintf(stdout, "MLT: In=%.2lf Out=%.2lf Set=%.2lf Stat=%d  HLT: In=%.2lf Out=%.2lf Set=%.2lf Stat=%d\n",
				mltInput, mltOutput, mltSetpoint, PID_getMode(unit->PID_mlt), 
				hltInput, hltOutput, hltSetpoint, PID_getMode(unit->PID_hlt));
	    }

	}

	if (brew) {
	    /*
	     * Automate mode
	     */
	    automatic_brew(unit, brew, recipe, dosave, seconds);
	    dosave = 0;
	    if (brew->brewstep == -1) {
		/*
		 * Save session and move it
		 */
		wrsession(brew);
		char	*fpath, *tpath;
		fpath = xstrcpy(etcpath);
		fpath = xstrcat(fpath, (char *)"brewing.xml");
		tpath = xstrcpy(varpath);
		tpath = xstrcat(tpath, (char *)"old/brewing.xml.");
		mkdirs(tpath, 0755);
		tpath = xstrcat(tpath, brew->name);
		if (debug)
		    fprintf(stdout, "auto: saving as %s\n", tpath);
		file_cp(fpath, tpath);
		unlink(fpath);
		free(fpath);
		free(tpath);

		/*
		 * Free memory, session is over.
		 */
		if (brew->name)
		    free(brew->name);
		if (brew->uuid_recipe)
		    free(brew->uuid_recipe);
		if (brew->uuid_unit)
		    free(brew->uuid_unit);
		free(brew);
		brew = NULL;
	    }

	} else if (manual != MANUAL_NONE) {
	    /*
	     * Manual mode
	     */
	    manual_menu(unit, seconds);
	    if (manual == MANUAL_NONE) {
		/*
		 * Rewrite the display
		 */
		prompt(101, NULL);	/* "    Brewco x.x.x    " */
		prompt(300, NULL);	/* "                    " */
		prompt(401, NULL);	/* "---  MAN  AUTO SETUP" */
	    }
	} else {
	    /*
	     * Not running.
	     */
	    tempstatus();
	    key = keycheck();
	    if (key == KEY_ENTER) {
		setup();
		prompt(101, NULL);	/* "    Brewco x.x.x    " */
		prompt(200, NULL);
		prompt(300, NULL);
		hlt_status(0);
		mlt_status(0);
		pump_status(0);
		prompt(401, NULL);	/* "---  MAN  AUTO SETUP" */
	    } else if (key == KEY_RETURN && ! brew) {
		int     i, isOk = TRUE;
		char    message[41];

		tm = localtime(&now);
		snprintf(message, 40, "%04d%02d%02d-%02d%02d", tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min);
		brew = (brew_session *)malloc(sizeof(brew_session));
		brew->uuid_recipe = xstrcpy(choose_recipe());
		brew->uuid_unit = xstrcpy(unit->uuid);
		brew->name = xstrcpy(message);
		brew->brewstep = STEP_NA;
		brew->mashstep = MASH_NA;
		brew->timeout = brew->boiltimer = 0;
		brew->starttime = brew->endtime = (time_t)0;
		/*
		 * Now check if everything is sane
		 */
		if (strcmp(brew->uuid_recipe, (char *)"00000000-0000-0000-0000-000000000000") == 0) {
		    isOk = FALSE;
		    snprintf(message, Config.lcd_cols + 1, " No recipe selected ");
		    if (debug)
			fprintf(stdout, "brew init: No recipe selected\n");
		}
		if (isOk) {
		    isOk = FALSE;
		    for (recipe = recipes; recipe; recipe = recipe->next) {
			if (strcmp(recipe->uuid, brew->uuid_recipe) == 0) {
			    isOk = TRUE;
			    if (! recipe->boiltime)
				isOk = FALSE;
			    for (i = 0; i < 8; i++) {
				if (! recipe->mash[i].skip && ! recipe->mash[i].setpoint)
				    isOk = FALSE;
			    }
			    for (i = 0; i < 3; i++) {
				if (! recipe->hopstand[i].skip && recipe->hopstand[i].hold && (recipe->hopstand[i].setpoint == 0))
				    isOk = FALSE;
			    }
			    break;
			}
		    }
		    if (isOk == FALSE) {
			snprintf(message, Config.lcd_cols + 1, "    Recipe error    ");
			if (debug)
			    fprintf(stdout, "brew init: recipe error\n");
		    }
		}

		if (debug)
		    fprintf(stdout, "init brew: %s\n", isOk ? (char *)"Ok":(char *)"Error");

		if (isOk) {
		    wrsession(brew);
		} else {
		    prompt(300, message);
		    prompt(408, NULL);		/* "---  ---   Ok   --- " */
		    key = keywait();
		    if (brew->name)
			free(brew->name);
		    if (brew->uuid_recipe)
			free(brew->uuid_recipe);
		    if (brew->uuid_unit)
			free(brew->uuid_unit);
		    free(brew);
		    brew = NULL;
		    /*
		     * Rewrite the display
		     */
		    prompt(101, NULL);      /* "    Brewco x.x.x    " */
		    prompt(300, NULL);      /* "                    " */
		    prompt(401, NULL);      /* "---  MAN  AUTO SETUP" */
		}

	    } else if (key == KEY_DOWN) {
		manual = MANUAL_SELHLT;
		manual_prompt();
	    }
	}

	usleep(5000);	/* 5 mSec */

    } while (run);

    syslog(LOG_NOTICE, "Out of loop");
    if (debug)
	fprintf(stdout, (char *)"Out of loop\n");

    prompt(0, NULL);
    prompt(101, NULL);		/* "    Brewco x.x.x    " */
    prompt(302, NULL);		/* "   Shutting down    " */

    /*
     * Give threads time to cleanup
     */
    usleep(1500000);
    prompt(0, NULL);
    setBacklight(0);

    if (sock != -1) {
	if (shutdown(sock, SHUT_RDWR)) {
	    syslog(LOG_NOTICE, "Can't shutdown socket: %s", strerror(errno));
	}
	sock = -1;
    }

    wrrecipes();
    wrconfig();
    ulockprog((char *)"brewco");
    return 0;
}


int main(int argc, char *argv[])
{
    int		rc = 0, c, i;
    char	*homepath = NULL;

    while (1) {
	int option_index = 0;
	static struct option long_options[] = {
	    {"debug", 0, 0, 'c'},
	    {"help", 0, 0, 'h'},
	    {0, 0, 0, 0}
	};

	c = getopt_long(argc, argv, "dh", long_options, &option_index);
	if (c == -1)
	    break;

	switch (c) {
	    case 'd':   debug = TRUE;
			break;
	    case 'h':   help();
			return 1;
	}
    }

    openlog("brewco", LOG_PID|LOG_CONS|LOG_NOWAIT, LOG_USER);
    syslog(LOG_NOTICE, "mbsePi-apps brewco v%s starting", VERSION);
    if (debug)
	fprintf(stdout, "mbsePi-apps brewco v%s starting\n", VERSION);

    /*
     * Set home directory path
     */
    if (getenv((char *)"USER") == NULL) {
	homepath = xstrcpy((char *)"/root");
    } else {
	homepath = xstrcpy(getenv((char *)"HOME"));
    }
    varpath = xstrcpy(homepath);
    varpath = xstrcat(varpath, (char *)"/.brewco/var/");
    etcpath = xstrcpy(homepath);
    etcpath = xstrcat(etcpath, (char *)"/.brewco/etc/");
    mkdirs(varpath, 0755);
    mkdirs(etcpath, 0755);

    if (rdconfig()) {
	fprintf(stderr, "Error reading configuration\n");
	syslog(LOG_NOTICE, "Error reading configuration: halted");
	return 1;
    }
    if (debug)
	fprintf(stdout, "configuration loaded\n");

    if (rdrecipes()) {
	fprintf(stderr, "Error reading recipes\n");
    	syslog(LOG_NOTICE, "Error reading recipes: halted");
	return 1;
    }
    if (debug)
	fprintf(stdout, "recipes loaded\n");

    /*
     *  Catch all the signals we can, and ignore the rest. Note that SIGKILL can't be ignored
     *  but that's live. This daemon should only be stopped by SIGTERM.
     *  Don't catch SIGCHLD.
     */
    for (i = 0; i < NSIG; i++) {
	if ((i != SIGCHLD) && (i != SIGKILL) && (i != SIGSTOP))
	    signal(i, (void (*))die);
    }

#ifdef HAVE_WIRINGPI_H
    if (wiringPiSetup () )
	return 1;
#endif

    if ((rc = initLCD (Config.lcd_cols, Config.lcd_rows))) {
	fprintf(stderr, "Cannot initialize LCD display, rc=%d\n", rc);
	return 1;
    }

    rc = server();

    syslog(LOG_NOTICE, "Finished, rc=%d", rc);
    if (debug)
	fprintf(stdout, "Finished, rc=%d\n", rc);
    return rc;
}