Spectrum Brands MC.31XX - Manual (Page 37)

Programming the Board Initialization
(c) Spectrum GmbH 37
This means as a result that it is not necessary to check each driver call for an error but to check for an error before the board is started to see
whether all settings have been valid.
By reading all the error information one can easily examine where the error occured. The following table shows all the error related registers
that can be read out.
The error codes are described in detail in the appendix. Please refer to this error description and the descrip-
tion of the software register to examine the cause for the error message.
Example for error checking:
This short program then would generate a printout as:
Initialization
Starting the automatic initialization routine
Before you can access the boards in your program, you have to initialize them first. Therefore the Spectrum function SpcInitPCIBoards is used.
If it is called, all Spectrum boards in the host system are initialized automatically. If no errors occured during the initialization, the returned
value is 0 (ERR_OK). In any other cases something has gone wrong. Please see appendix for explanations of the different error codes.
If the process of initializing the boards was successful, the function returns the total number of Spectrum boards that have been found in your
system. The third return value is the revision of the PCI Bus, the Spectrum boards are installed in.
The following example shows how to start the initialization of the board and check for errors.
PCI Register
These registers are set by the driver after the PCI initialization. The information is found in the on-board EEPROM, and can easily be read
out by your own application software. All of the following PCI registers are read only. You get access to all registers by using the Spectrum
function SpcGetParam with one of the following registers.
One of the following values is returned, when reading this register.
Register Value Direction Description
SPC_LASTERRORCODE 999999 r Error code of the last error that occured. The errorcodes are found in spcerr.h. If this register is read,
the driver will be unlocked.
SPC_LASTERRORREG 999998 r Software register that causes the error.
SPC_LASTERRORVALUE 999997 r The value that has been written to the faulty software register.
SpcSetParam (hDrv, SPC_MEMSIZE, -345); // faulty command
if (SpcSetParam (hDrv, SPC_COMMAND, SPC_START) != ERR_OK) // try to start and check for an error
{
SpcGetParam (hDrv, SPC_LASTERRORCODE, &lErrorCode); // read out the error information
SpcGetParam (hDrv, SPC_LASTERRORREG, &lErrorReg);
SpcGetParam (hDrv, SPC_LASTERRORVALUE, &lErrorValue);
printf („Error %d when writing Register %d with Value %d !\n“, lErrorCode, lErrorReg, &lErrorValue);
}
Error 101 when writing Register 10000 with Value -345 !
// ----- Initialization of PCI Bus Boards------------------------------------
if (SpcInitPCIBoards (&nCount, &nPCIBusVersion) != ERR_OK)
return;
if (nCount == 0)
{
printf ("No Spectrum board found\n");
return;
}
Register Value Direction Description
SPC_PCITYP 2000 r Type of board as listed in the table below.
Boardtype Value hexa-
dezimal Value dezimal Boardtype Value hexa-
dezimal Value dezimal
TYP_MC3110 13110h 78096 TYP_MC3122 13122h 78114
TYP_MC3111 13111h 78097 TYP_MC3130 13130h 78128
TYP_MC3112 13112h 78098 TYP_MC3131 13131h 78129
TYP_MC3120 13120h 78112 TYP_MC3132 13132h 78130
TYP_MC3121 13121h 78113