//--------------------------------------------------------------------------
// The 'owSerialNum' function either reads or sets the SerialNum buffer
// that is used in the search functions 'owFirst' and 'owNext'.
// This function contains two parameters, 'serialnum_buf' is a pointer
// to a buffer provided by the caller. 'serialnum_buf' should point to
// an array of 8 unsigned chars. The second parameter is a flag called
// 'do_read' that is TRUE (1) if the operation is to read and FALSE
// (0) if the operation is to set the internal SerialNum buffer from
// the data in the provided buffer.
//
// 'portnum' - number 0 to MAX_PORTNUM-1. This number is provided to
// indicate the symbolic port number.
// 'serialnum_buf' - buffer to that contains the serial number to set
// when do_read = FALSE (0) and buffer to get the serial
// number when do_read = TRUE (1).
// 'do_read' - flag to indicate reading (1) or setting (0) the current
// serial number.
//
void owSerialNum(int portnum, uchar *serialnum_buf, SMALLINT do_read)
{
short ROM[8],i;
// check if reading or writing
if (do_read)
{
ROM[0] = 0;
}
else
{
for (i = 0; i < 8; i++)
ROM[i] = serialnum_buf[i];
}
// call TMEX to read or set the current device
TMRom(SessionHandle[portnum], StateBuffer[portnum], ROM);
// place in 'serialnum_buf'
if (do_read)
{
for (i = 0; i < 8; i++)
serialnum_buf[i] = (uchar)ROM[i];
}
}
/*----------------------------------------------------------------------
* Find the first device with a particular family
*/
short FindFirstFamily(short family, long session_handle)
{
short j;
short ROM[9];
/* set up to find the first device with family 'family */
if (TMFamilySearchSetup(session_handle,&state_buffer,family) == 1)
{
/* get first device in list with the specified family */
if (TMNext(session_handle,state_buffer) == 1)
{
/* read the rom number */
ROM[0] = 0;
TMRom(session_handle,state_buffer,ROM);
/* check if correct type */
if ((family & 0x7F) == (ROM[0] & 0x7F))
{
printf("Serial ROM ID: ");
for (j = 7; j >= 0; j--)
printf("%02X",ROM[j]);
printf("\n\n");
return 1;
}
}
}
/* failed to find device of that type */
return 0;
}
