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#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <strings.h>
#include <inttypes.h>
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#include <time.h>
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#include "ui.h"
#include "hvc.h"
#include "printx.h"
#include "serial.h"
#define DEVICE1 "/dev/ttyACM1"
#define SPEED B19200
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#define HVC_POLLING_TIME 50000
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#define WAIT_BEFORE_RETRY 5000
#define GET_DEVICE_MODEL 'A'
#define DEVICE_MODEL_HVC 'C'
#define GET_TEMP 'H'
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#define SET_HEAT_ON 'E'
#define SET_HEAT_OFF 'G'
#define SET_PUMP_ON 'B'
#define SET_PUMP_OFF 'D'
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// Globals
int hvc_fd = -1;
bool hvcStop = false;
bool sPump = false;
bool sHeat = false;
struct termios hvcSaveterm;
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bool wHeat = false;
bool wPump = false;
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time_t tHeatStart;
time_t tHeatStop;
double tHeatTimer;
time_t tPumpStart;
double tPumpTimer;
time_t tPumpStop;
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void stopHVC()
{
hvcStop = true;
}
void setPumpWantedState(bool s)
{
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tPumpStart = clock();
tPumpStop = clock();
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wPump = s;
}
void setHeatWantedState(bool s)
{
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tHeatStart = clock();
tHeatStop = clock();
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wHeat = s;
}
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void setPumpTimer(double t)
{
tPumpTimer = t;
}
void setHeatTimer(double t)
{
tHeatTimer = t;
}
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bool initHVC()
{
unsigned char data;
printx(DEBUG, HVC, "Connecting to interface 1\n");
if(init_serial(DEVICE1, SPEED, &hvc_fd, &hvcSaveterm))
{
printx(DEBUG, HVC, "Connected to an interface\n");
sendData(&hvc_fd, GET_DEVICE_MODEL);
printx(DEBUG, HVC, "Sended identification request %02x\n", GET_DEVICE_MODEL);
data = getData(&hvc_fd);
if(data == DEVICE_MODEL_HVC)
printx(INFO, HVC, "HVC Arduino connected\n");
else
printx(DEBUG, HVC, "HVC Arduino not found, response was %02x\n", data);
}
else
{
printx(WARNING, HVC, "Unable to connect to such interface\n");
return false;
}
return true;
}
void* processHVC(void* we)
{
uint8_t data;
while(!hvcStop)
{
printx(DEBUG, HVC, "Querying data\n");
sendData(&hvc_fd, GET_TEMP);
data = getData(&hvc_fd);
setTemp(data);
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if(tHeatTimer > 0)
{
tHeatStop = clock();
if(((double)(tHeatStop - tHeatStart) / CLOCKS_PER_SEC) > tHeatTimer)
{
wHeat = false;
tHeatTimer = 0;
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}
}
if(tPumpTimer > 0)
{
tPumpStop = clock();
if(((double)(tPumpStop - tPumpStart) / CLOCKS_PER_SEC) > tPumpTimer)
{
wPump = false;
tPumpTimer = 0;
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}
}
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if(wHeat ^ sHeat)
{
sendData(&hvc_fd, wHeat ? SET_HEAT_ON : SET_HEAT_OFF);
sHeat = wHeat;
setHeat(sHeat);
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if(sHeat)
tHeatStart = clock();
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}
if(wPump ^ sPump)
{
sendData(&hvc_fd, wPump ? SET_PUMP_ON : SET_PUMP_OFF);
sPump = wPump;
setPump(sPump);
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if(sPump)
tPumpStart = clock();
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}
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usleep(HVC_POLLING_TIME);
}
return NULL;
}
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