Cogent C API and Utilities : Version 6.4
	Cogent Driver Functions

`DR_ApReadBlock`

DR_ApReadBlock — reads a block.

Syntax

#include <cogent.h>
int DR_ApReadBlock( int   card_id, 
  int   buf_id, 
  unsigned short   offset, 
  unsigned short   size, 
  void*   data, 
  char**   error);

Arguments

card_id: The card ID of the requested block of data.
buf_id: The buffer ID of the requested block of data.
offset: The starting (byte) address of the requested block of data into the specified card buffer.
size: The number of bytes to be read.
data: The address of memory area, at least size byes long, to receive data.
error: The address of a string pointer. In case of error (non-zero return), the string pointer is set to the corresponding error description string. The error string is contained in a static buffer and remains valid only until the next API call. The parameter may be NULL if no error string is required.

Returns

The integer value 0 if the function was successful, otherwise one of the following error codes:

DR_API_IPC_ERRORS
DR_ERR_CARD_INVALID
DR_ERR_BLK_INVALID
DR_ERR_BLK_OFS_INVALID
DR_ERR_BLK_SIZE_INVALID
DR_ERR_CMD_INVALID

Description

This function reads the specified block.

Example

char    data[1024];
int     result, i;
char    *error_str;

printf ("   Reading output block\n");
if (result = DR_ApReadBlock (0, 0, 0, 64, data, &error_str))
      printf ("     Error@ReadBlock (%d,%s)\n",
              result, error_str);
else
{
        dump_data (6, data, 8, 16);
}

`int DR_ApReadBlock(`	int	`card_id`,
	int	`buf_id`,
	unsigned short	`offset`,
	unsigned short	`size`,
	void*	`data`,
	char**	`error)`;


DR_ApPointBufAddress		DR_ApReadControl