/**
* Write into a buffer to send via TCP.
* @param devptr TCP device table entry
* @param buf buffer to read octets into
* @param len size of the buffer
* @return count of octets written
*/
devcall tcpWrite(device *devptr, void *buf, uint len)
{
uint count = 0;
uchar ch;
struct tcb *tcbptr;
uchar *buffer = buf;
int check;
tcbptr = &tcptab[devptr->minor];
/* Handle states for which data can never be sent */
wait(tcbptr->mutex);
check = stateCheck(tcbptr);
if (check != OK)
{
signal(tcbptr->mutex);
return check;
}
signal(tcbptr->mutex);
/* Put each octet from the buffer into output buffer */
while (count < len)
{
/* Wait for space and write as much as possible into the output
* buffer; Preserve the circular buffer */
wait(tcbptr->writers);
wait(tcbptr->mutex);
/* Returned if changed to a state where no data can be sent */
check = stateCheck(tcbptr);
if (check != OK)
{
signal(tcbptr->writers);
return check;
}
while ((tcbptr->ocount < TCP_OBLEN) && (count < len))
{
ch = *buffer++;
tcbptr->out[((tcbptr->ostart + tcbptr->ocount) % TCP_OBLEN)] =
ch;
tcbptr->ocount++;
count++;
}
/* If space remains, another writer can write */
if (tcbptr->ocount < TCP_OBLEN)
{
signal(tcbptr->writers);
}
if ((TCP_ESTAB == tcbptr->state)
|| (TCP_CLOSEWT == tcbptr->state))
{
tcpSendData(tcbptr);
}
signal(tcbptr->mutex);
}
return count;
}
ThreadNet::ThreadNet(QObject *parent) : QThread(parent)
{
tcp_server = new QTcpServer();
connect(tcp_server, SIGNAL(newConnection()), this, SLOT(tcpSendData()));
tcpInitServer();
udp_socket = new QUdpSocket();
udp_socket->bind(udp_port, QUdpSocket::ShareAddress | QUdpSocket::ReuseAddressHint);
connect(udp_socket, SIGNAL(readyRead()), this, SLOT(udpProcessPendingDatagrams()));
checkUpdate();
setTimer();
}
void update_device(data_t *data)
{
int i;
/* Abbreviations for the electrodes */
const char source[] = { 'S', 'W', 'N', 'E', 'C' };
while(gestic_data_stream_update(data->gestic, NULL) == 0)
{
/* Print update of the position */
gotoxy(0, 4);
if(data->gestic_pos != NULL)
{ printf("Position: X %5d Y %5d Z %5d \n",
data->gestic_pos->x, data->gestic_pos->y,
data->gestic_pos->z);
/*
counts++;
if (counts == 10)
{
if((lastz != data->gestic_pos->z))
{
tcpData[0]='Z';
sprintf(&tcpData[1],"%d",data->gestic_pos->z);
tcpSendData(tcpData);
lastz = data->gestic_pos->z;
counts = 0;
}
}*/
}
else
printf("Position: Not available\n");
/* Print update of gestures */
gotoxy(0, 5);
if(data->gestic_gesture != NULL) {
/* Remember last gesture and reset it after 1s = 200 updates */
if(data->gestic_gesture->gesture > 0 && data->gestic_gesture->gesture <= 6)
data->last_gesture = data->gestic_gesture->gesture;
else if(data->gestic_gesture->last_event > 1) //Shrenik
data->last_gesture = 0;
printf("Gesture: %s \n", gestures[data->last_gesture]);
//*tcpData = (char *)gestures[data->last_gesture];
if(strcmp(gestures[data->last_gesture],"DNULL"))
{
tcpSendData(gestures[data->last_gesture]);
}
else if((lastz != data->gestic_pos->z))
{
if(((lastz-data->gestic_pos->z) > 1000) | ((data->gestic_pos->z - lastz) > 1000))
{
tcpData[0]='Z';
sprintf(&tcpData[1],"%d",data->gestic_pos->z);
// tcpSendData(tcpData);
lastz = data->gestic_pos->z;
//counts = 0;
//Sleep(10);
}
}
} else {
printf("Gesture: Not available\n");
}
/* Print update of touch */
gotoxy(0, 6);
printf("Touch: ");
for(i = 0; i < 5; ++i) {
if(data->gestic_touch->flags & (1<<i))
printf("%c ", source[i]);
}
printf(" \n");
/* Print update of AirWheel */
gotoxy(0, 7);
if(data->gestic_air_wheel != NULL) {
printf("Air Wheel: %d \n", data->gestic_air_wheel->counter);
} else {
printf("Air Wheel: Not available\n");
}
/* Print update of Signal Deviation */
gotoxy(0, 8);
if(data->gestic_sd != NULL) {
printf("Signal Deviation:");
for(i = 0; i < 5; ++i)
printf(" %c %5.0f ", source[i], data->gestic_sd->channel[i]);
if(data->gestic_calib != NULL)
printf("\nLast Calibration: %7d",
data->gestic_calib->last_event);
} else {
printf("Signal Deviation: Not available\n");
}
}
}