VTI Instruments EMX-4016B, Руководство пользователя

Страница: 104 / 118

VTI Instruments Corp.
APPENDIX C 104
int recLen = 0;
CComSafeArray< short > WriteBuf;
WriteBuf.Create();
if (strlen(data) != ((DS2430_SCRATCHPAD_LEN * 2) +
(DS2430_SCRATCHPAD_LEN-1)))
{
printf(
"Data was not the right length (wanted 95, got
%i)\n" , ( int )strlen(data));
return -1;
}
WriteBuf.Add((
short )0); // reserve first byte for length
// access the current device with address in DATA_ID
WriteBuf.Add(CMD_ML_ACCESS);
// construct a block of communication to MicroLAN
WriteBuf.Add(CMD_ML_DATA);
WriteBuf.Add(3+DS2430_SCRATCHPAD_LEN);
// block length
WriteBuf.Add(4+DS2430_SCRATCHPAD_LEN); // data length
// send the write scratchpad command
WriteBuf.Add(WRITE_SCRATCHPAD);
// send the address byte
WriteBuf.Add(( short )0);
// the 5 bytes of data to write
char byte[3];
for ( int i = 0; i < ((2*DS2430_SCRATCHPAD_LEN) +
(DS2430_SCRATCHPAD_LEN-1)); i+=3)
{
strncpy_s(byte, 3, &data[i], 2);
byte[2]=
'\0' ;
WriteBuf.Add(( unsigned char )strtoul(byte, NULL, 16));
//convert to hex
}
// the copy command
// access the current device with address in DATA_ID
WriteBuf.Add(CMD_ML_ACCESS);
// construct a block of communication to MicroLAN
WriteBuf.Add(CMD_ML_DATA);
WriteBuf.Add(3);
// block length
WriteBuf.Add(2); // data length
// send the copy scratchpad command
WriteBuf.Add(COPY_SCRATCHPAD);
// send the validation key
WriteBuf.Add(0xA5);
// delay for 128ms
WriteBuf.Add(CMD_DELAY);
WriteBuf.Add((
short )0);
WriteBuf.Add(DELAY_128 | DELAY_MS);
// set the length
WriteBuf[0] = ( short )WriteBuf.GetCount() - 1;
// send the commands
digitizer->Channels->Item[name]->TEDS-
>WriteTEDS(WriteBuf.GetSafeArrayPtr());
std::cout <<
"DS2430 Write & Copy Scratchpad (WriteData)" <<
std::endl;
PrintPacket(WriteBuf);