// Does the system allows us to place a lock on this file descriptor
if (fcntl(sp->fd, F_SETLK, &fl) == -1) {
// A conflicting lock is held by another process
+ free(sp);
return CLAIMED_SERIAL_PORT;
}
if (res < 0) {
return false;
}
-
+
// Read time-out
if (res == 0) {
if (*pszRxLen == 0) {
return true;
}
}
-
+
// Retrieve the count of the incoming bytes
res = ioctl(((serial_port_unix*)sp)->fd, FIONREAD, &byteCount);
if (res < 0) return false;
-
+
// There is something available, read the data
res = read(((serial_port_unix*)sp)->fd,pbtRx+(*pszRxLen),byteCount);
-
+
// Stop if the OS has some troubles reading the data
if (res <= 0) return false;
-
+
*pszRxLen += res;
+
+ if(res==byteCount)
+ return true;
} while (byteCount);
-
+
return true;
}