// Lab01/2 - for third task
void tWrite(void){
while(1){
beLazy(100);
char stringBufferPot[50];
char stringBufferTemp[50];
char stringBufferKey[50];
semTake(writeSem, WAIT_FOREVER);
sprintf(stringBufferTemp, "Temperature: %d ",AInTemp);
//sprintf(stringBufferPot, "Potentiomenter: %d ",AInPot);
sprintf(stringBufferKey, "Gedrueckte Taste: %d ", key);
if(key == 49){
sprintf(stringBufferPot, "Potentiometer: %d ",AInPot);
}
else if(key == 50){
//calculation of the voltage based on the input value 58...4095
float k = (5.0/4037);
float d = (float)(-k*58);
float calc = (float)(k* AInPot+d);
sprintf(stringBufferPot, "Potentiometer: %f V ",calc);
}
else if (key == 51){
sprintf(stringBufferPot, "Potentiometer: %x ", AInPot);
}
else{
sprintf(stringBufferPot, "Error - key 1,2 or 3 should be used");
}
writeToDisplay(0,0, stringBufferPot);
writeToDisplay(1,0, stringBufferTemp);
writeToDisplay(2,0, stringBufferKey);
semGive(writeSem);
}
}
// for third task
void tWrite(void){
while(1){
beLazy(100);
char stringBufferPot[50];
char stringBufferTemp[50];
sprintf(stringBufferTemp, "Temperature: %d ",AInTemp);
sprintf(stringBufferPot, "Potentiomenter: %d ",AInPot);
writeToDisplay(0,0, stringBufferPot);
writeToDisplay(1,0, stringBufferTemp);
}
}
int timer (void)
{
int t;
char output[32];
while(1){
time_t t;
struct tm * timeinfo;
time ( &t );
timeinfo = localtime ( &t );
semTake (writeDisplay, WAIT_FOREVER);
sprintf(output,"Current local time and date: %s", asctime (timeinfo));
writeToDisplay (10, 2, output );
semGive (writeDisplay);
beLazy (3000);
}
}
void tTime(void){
while(1){
time_t timedate;
beLazy(3000);
count +=3;
char stringBufferTime[50];
char stringBufferCount[50];
timedate = time(NULL);
semTake(writeSem, WAIT_FOREVER);
sprintf(stringBufferTime, "Aktuelle Zeit: %s", ctime(&timedate));
sprintf(stringBufferCount, "Count: %d ",count);
writeToDisplay(4,0,stringBufferCount);
writeToDisplay(5,0,stringBufferTime);
semGive(writeSem);
}
}
VOID tcpServerWorkTask(int sFd, /* server's socket file descriptor */
char * address, /* client's socket address */
u_short port /* client's socket port */
)
{
char clientRequest[200];
//struct request clientRequest; /* request/message from client */
int nRead; /* number of bytes read */
static char replyMsg[] = "Gruess Gott in Vorarlberg\n";
float potiVolt;
/* read client request, display message */
writeToDisplay (14, 2, "tcpServerWorkTask" );
write(sFd, replyMsg, sizeof(replyMsg));
while ((nRead = fioRdString(sFd, (char *) &clientRequest, sizeof(clientRequest)))> 0) {
//printf("MESSAGE FROM CLIENT (Internet Address %s, port %d):\n%s\n",address, port, clientRequest.message);
char output[64];
switch (clientRequest[0]) {
case '1':
sprintf(output,"Poti Dezimal = %d ", globalPoti);
write(sFd, output, 64);
break;
case '2':
potiVolt=(float)(globalPoti*5)/4095;
sprintf(output,"Poti Volt = %f ", potiVolt);
write(sFd, output, 64);
break;
case '3':
sprintf(output,"Poti Hex = %x ", globalPoti);
write(sFd, output, 64);
break;
default:
write(sFd, "Wrong input", 11);
}
}
if (nRead == ERROR) /* error from read() */
perror("read");
close(sFd); /* close server socket connection */
}
STATUS tcpServer(void) {
struct sockaddr_in serverAddr; /* server's socket address */
struct sockaddr_in clientAddr; /* client's socket address */
int sockAddrSize; /* size of socket address structure */
int sFd; /* socket file descriptor */
int newFd; /* socket descriptor from accept */
int ix = 0; /* counter for work task names */
char workName[16]; /* name of work task */
/* set up the local address */
sockAddrSize = sizeof(struct sockaddr_in);
bzero((char *) &serverAddr, sockAddrSize);
serverAddr.sin_family = AF_INET;
serverAddr.sin_len = (u_char) sockAddrSize;
serverAddr.sin_port = htons(SERVER_PORT_NUM);
serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
/* create a TCP-based socket */
if ((sFd = socket(AF_INET, SOCK_STREAM, 0)) == ERROR) {
perror("socket");
return (ERROR);
}
/* bind socket to local address */
if (bind(sFd, (struct sockaddr *) &serverAddr, sockAddrSize) == ERROR) {
perror("bind");
close(sFd);
return (ERROR);
}
/* create queue for client connection requests */
if (listen(sFd, 4) == ERROR) {
perror("listen");
close(sFd);
return (ERROR);
}
/* accept new connect requests and spawn tasks to process them */
FOREVER {
writeToDisplay (22, 2, "tcpServer established " );
socklen_t len = sizeof(clientAddr);
if ((newFd = accept(sFd, (struct sockaddr *) &clientAddr, &len))
== ERROR) {
perror("accept");
close(sFd);
return (ERROR);
}
sprintf(workName, "tTcpWork%d", ix++);
if (taskSpawn(workName, SERVER_WORK_PRIORITY, 0, SERVER_STACK_SIZE,
(FUNCPTR) tcpServerWorkTask, newFd,
(int) inet_ntoa(clientAddr.sin_addr),
ntohs(clientAddr.sin_port), 0, 0, 0, 0, 0, 0, 0) == ERROR) {
/* if taskSpawn fails, close fd and return to top of loop */
perror("taskSpawn");
close(newFd);
}
}
}
int showInputs (void)
{
char output[64];
float potiVolt;
float tempVolt;
while(1){
semTake (writeDisplay, WAIT_FOREVER);
sprintf(output,"GlobalKey = %c ", globalKey);
writeToDisplay (3, 2, output );
switch(globalKey){
case '1': writeToDisplay (8, 2, " ");
sprintf(output,"Temperature = %d ", globalTemp);
writeToDisplay (5, 2, output );
sprintf(output,"Poti = %d ", globalPoti);
writeToDisplay (6, 2, output );
break;
case '2': writeToDisplay (8, 2, " ");
potiVolt=(float)(globalPoti*5)/4095;
tempVolt=(float)(globalTemp*10)/4095;
sprintf(output,"Temperature = %f ", tempVolt);
writeToDisplay (5, 2, output );
sprintf(output,"Poti = %f ", potiVolt);
writeToDisplay (6, 2, output );
break;
case '3': writeToDisplay (8, 2, " ");
sprintf(output,"Temperature = %x ", globalTemp);
writeToDisplay (5, 2, output );
sprintf(output,"Poti = %x ", globalPoti);
writeToDisplay (6, 2, output );
break;
default: writeToDisplay (8, 2, "Wrong User Input" );
}
semGive (writeDisplay);
beLazy (100);
}
}
