int pigpio_start(char *addrStr, char *portStr)
{
if (!gPigStarted)
{
gPigCommand = pigpioOpenSocket(addrStr, portStr);
if (gPigCommand >= 0)
{
gPigNotify = pigpioOpenSocket(addrStr, portStr);
if (gPigNotify >= 0)
{
gPigHandle = pigpio_command(gPigNotify, PI_CMD_NOIB, 0, 0, 1);
if (gPigHandle < 0) return pigif_bad_noib;
else
{
pthNotify = start_thread(pthNotifyThread, 0);
if (pthNotify)
{
gPigStarted = 1;
return 0;
}
else return pigif_notify_failed;
}
}
else return gPigNotify;
}
else return gPigCommand;
}
return 0;
}
int pigpio_start(char *addrStr, char *portStr)
{
int pi;
int *userdata;
for (pi=0; pi<MAX_PI; pi++)
{
if (!gPiInUse[pi]) break;
}
if (pi >= MAX_PI) return pigif_too_many_pis;
gPiInUse[pi] = 1;
pthread_mutex_init(&gCmdMutex[pi], NULL);
gPigCommand[pi] = pigpioOpenSocket(addrStr, portStr);
if (gPigCommand[pi] >= 0)
{
gPigNotify[pi] = pigpioOpenSocket(addrStr, portStr);
if (gPigNotify[pi] >= 0)
{
gPigHandle[pi] = pigpio_notify(pi);
if (gPigHandle[pi] < 0) return pigif_bad_noib;
else
{
gLastLevel[pi] = read_bank_1(pi);
/* must be freed by pthNotifyThread */
userdata = malloc(sizeof(*userdata));
*userdata = pi;
gPthNotify[pi] = start_thread(pthNotifyThread, userdata);
if (gPthNotify[pi]) return pi;
else return pigif_notify_failed;
}
}
else return gPigNotify[pi];
}
else return gPigCommand[pi];
}