bus.c
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#include <stdio.h>
#include <stdbool.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include "printx.h"
#include "ui.h"
#include "nfc.h"
#include "hvc.h"
#define CMD_MAX 70
int bus;
bool busFree = true;
bool busStop = false;
void stopBus()
{
busStop = true;
}
void processCmd(char* buffer)
{
buffer[strlen(buffer)-1]='\0';
if(strcmp(buffer, "quit") == 0 || strcmp(buffer, "exit") == 0)
{
printx(INFO, BUS, "Exit request receved, processing ...\n");
stopNFC();
stopHVC();
stopBus();
stopUI();
}
else if(strcmp(buffer, "setpumpon") == 0)
{
printx(INFO, BUS, "Setting PUMP ON");
setPumpWantedState(true);
}
else if(strcmp(buffer, "setpumpoff") == 0)
{
printx(INFO, BUS, "Setting PUMP OFF");
setPumpWantedState(false);
}
else if(strcmp(buffer, "setheaton") == 0)
{
printx(INFO, BUS, "Setting HEAT ON");
setHeatWantedState(true);
}
else if(strcmp(buffer, "setheatoff") == 0)
{
printx(INFO, BUS, "Setting HEAT OFF");
setHeatWantedState(false);
}
else if(strcmp(buffer, "setheaton5s") == 0)
{
printx(INFO, BUS, "Setting HEAT ON for 5 secs");
setHeatTimer(5);
setHeatWantedState(true);
}
else if(strcmp(buffer, "setpumpon5s") == 0)
{
printx(INFO, BUS, "Setting PUMP ON for 5 secs");
setPumpTimer(5);
setPumpWantedState(true);
}
//printx(DEBUG, BUS, "STRLEN : %d and strcmp ret %d", strlen(buffer), strcmp(buffer, "quit"));
}
void* processBus(void* we)
{
bus = open("bus.log", O_RDWR);
char buffer[CMD_MAX];
printx(DEBUG, BUS, "Waiting for events\n");
while(!busStop)
{
while(busFree);
while(!busFree);
printx(DEBUG, BUS, "Event receved !\n");
busFree = false;
lseek(bus, 0, SEEK_SET);
printx(DEBUG, BUS, "Data read %d\n", read(bus, buffer, CMD_MAX));
ftruncate(bus, 0);
sync();
processCmd(buffer);
busFree = true;
printx(DEBUG, BUS, buffer);
}
return NULL;
}
bool initBus()
{
bus = creat("bus.log", 0666);
if(bus == -1)
{
printf("Unable to open the bus file\n");
return false;
}
return true;
}
void sendToBus(char* cmd)
{
while(!busFree);
busFree = false;
ftruncate(bus, 0);
ftruncate(bus, CMD_MAX);
lseek(bus, 0, SEEK_SET);
dprintf(bus, "%s\n", cmd);
busFree = true;
}