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Epson Research and Development
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S1D13505 Programming Notes and Examples
X23A-G-003-07 Issue Date: 01/02/05
Parameters: DevID - registered device ID
Offset - offset from start of the display buffer
Value - BYTE value to write
Count - number of bytes to write
Return Value: ERR_OK - operation completed with no problems
ERR_HAL_BAD_ARG - if the value for Offset is greater than the amount of
installed memory.
Note
If offset + count > memory size, this function will limit the writes to the end of memory.
int seWriteDisplayWords(int DevID, DWORD Offset, WORD Value, DWORD Count)
Description: Writes one or more words to the display buffer.
Parameters: DevID - registered device ID
Offset - offset from start of the display buffer
Value - WORD value to write
Count - number of words to write
Return Value: ERR_OK - operation completed with no problems
ERR_HAL_BAD_ARG - if the value for Offset is greater than the amount of
installed memory.
Note
If offset + (count*2) > memory size, this function will limit the writes to the end of
memory.
int seWriteDisplayDwords(int DevID, DWORD Offset, DWORD Value, DWORD Count)
Description: Writes one or more dwords to the display buffer.
Parameters: DevID - registered device ID
Offset - offset from start of the display buffer
Value - DWORD value to write
Count - number of dwords to write
Return Value: ERR_OK - operation completed with no problems
ERR_HAL_BAD_ARG - if the value for Offset is greater than the amount of
installed memory.
Note
If offset + (count*4) > memory size, this function will limit the writes to the end of
memory.
int seReadDisplayByte(int DevID, DWORD Offset, BYTE *pByte)
Description: Reads a byte from the display buffer at the specified offset and returns the value in
pByte.