RVNET_DATATYPE RVnetSlaveProcess(uint8 *px_buf, RVNET_DATATYPE pkSize,
uint8 device_address)
{
volatile uint8 *pxPack = px_buf;
if (*pxPack == device_address)
{
if (CheckCRC(pxPack, pkSize))
{
pxPack++;
switch (*pxPack)
{
case 0x00:
pxPack++;
pkSize = ReadDeviceID(pxPack);
break;
case 0x01:
case 0x02:
pxPack++;
pkSize = ReadNBits(pxPack);
break;
case 0x03:
case 0x04:
pxPack++;
pkSize = ReadNWords(pxPack);
break;
case 0x05:
pxPack++;
pkSize = WriteBit(pxPack);
break;
case 0x10:
pxPack++;
pkSize = WriteNWords(pxPack);
break;
default:
pxPack++;
pkSize = ErrorAddress(pxPack);
break;
}
}
else
return 0;
}
else
return 0;
pkSize += 2; // Add heder
SetCRC(px_buf, pkSize);
pkSize += 2; // Add CRC
return pkSize;
}
/*!
This method tries to get the device id back from the printer and does some basic verification.
*/
DRIVER_ERROR SystemServices::GetDeviceID(BYTE* strID, int iSize, BOOL bQuery)
{
if (iSize < 3) // must have at least enough space for count bytes and NULL terminator
{
return(SYSTEM_ERROR);
}
memset (strID, 0, iSize);
if (bQuery)
{
// initialize the first 3 bytes to NULL (1st 2 bytes may be binary count of string
// length so need to clear them as well as the "real" start of the string)
// so that if ReadDeviceID() does nothing with buffer we won't act upon what
// was in the buffer before calling it
strID[0] = strID[1] = strID[2] = '\0';
// we are going to try more then once because some printers lie and this
// specifically fixes problems with the DJ630 & DJ640 printers.
int i = 0;
for(i = 0; i < 20; i++)
{
// get the string
if((ReadDeviceID(strID, iSize) != NO_ERROR))
{
DBG1("Error from ReadDeviceID or No DevID Available\n");
if(BusyWait((DWORD)100) == JOB_CANCELED)
{
return JOB_CANCELED;
}
continue; // go back and try again
}
// look for the existence of either of the defined manufacturer fields in the string
// (need to look starting at strID[0] and at strID[2] since the first 2 bytes may or
// may not be binary count bytes, one of which could be a binary 0 (NULL) which strstr()
// will interpret as the end of string)
else
{
if ((!strstr((const char*)strID, "MFG:") &&
!strstr((const char*)strID+2, "MFG:") &&
!strstr((const char*)strID, "MANUFACTURER:") &&
!strstr((const char*)strID+2, "MANUFACTURER:")) ||
(!strstr((const char*)strID, "MDL:") &&
!strstr((const char*)strID+2, "MDL:") &&
!strstr((const char*)strID, "MODEL:") &&
!strstr((const char*)strID+2, "MODEL:")) ||
((strID[0] == '\0') && (strID[1] == '\0')))
{
DBG1("Successful' DevID request was a lie. Retry...waiting 100 ms\n");
if(BusyWait((DWORD)100) == JOB_CANCELED)
{
return JOB_CANCELED;
}
continue; // go back and try again
}
else
{
// If either of the first two bytes is 0, byte count is there, replace them.
if (strID[0] == 0 || strID[1] == 0)
{
strID[0] = strID[1] = ' ';
}
//DBG1("HPPCL: ReadDeviceID [%hs]\n", strID+2);
break; // SUCCESS!
}
}
}
if(i >= 20)
{
return BAD_DEVICE_ID;
}
}
else
{
// for use when string doesn't have to be re-fetched from printer
if (DevIDBuffSize > iSize)
{
return SYSTEM_ERROR;
}
// the first 2 bytes may be binary so could be 0 (NULL) so can't use strcpy
// (could get strlen of strDevID if start @ strDevID+2 and then add 2
// if do this it wouldn't require that caller's buffer be >=
// DevIDBuffSize, only that is it longer that actual devID string read)
memcpy(strID, strDevID, DevIDBuffSize);
}
return NO_ERROR;
// This is old code from before the 630, 640 loop fix was done (above). This can
// eventually be removed.
// check the read (or copied) DeviceID string for validity
// check what may be the binary count of the string length (some platforms return
// the raw DeviceID in which the 1st 2 bytes are a binary count of the string length,
// other platforms strip off these count bytes)
// if they are a binary count they shouldn't be zero, and if they aren't a binary
// count they also shouldn't be zero (NULL) since that would mean end of string
/* if ((strID[0] == '\0') && (strID[1] == '\0'))
{
return BAD_DEVICE_ID;
}
// look for the existence of either of the defined manufacturer fields in the string
// (need to look starting at strID[0] and at strID[2] since the first 2 bytes may or
// may not be binary count bytes, one of which could be a binary 0 (NULL) which strstr()
// will interpret as the end of string)
if (!strstr((const char*)strID, "MFG:") &&
!strstr((const char*)strID+2, "MFG:") &&
!strstr((const char*)strID, "MANUFACTURER:") &&
!strstr((const char*)strID+2, "MANUFACTURER:"))
{
return BAD_DEVICE_ID;
}*/
} //GetDeviceID
