Experimental Physics and
Industrial Control System

Maren Purves <[email protected]> · Tue, 10 Jul 2007 17:04:54 -1000

I have something like this:
void dhsDhsErrHd (int status)
{
char string[DHS_STRING_LENGTH];
printf("DHS error: ... status: %d\n", status);

switch (status)

{

case DHS_S_CMD_BULK_SENT: strcpy (string, "Message sent as bulk data");
break;

case DHS_S_CMD_DELETE : strcpy (string, "Deleting command structure");
break;

case DHS_S_CMD_MSG_SENT : strcpy (string, "Message sent as regular
message"); break;

case DHS_S_CMD_NEW : strcpy (string, "Creating command structure");
break;

case DHS_S_COND_TIMEOUT : strcpy (string, "Condition variable timed
out"); break;

case DHS_S_CONNECT : strcpy (string, "Client is requesting
connection"); break;

case DHS_S_DISCONNECT : strcpy (string, "Client has disconnected"); break;

case DHS_S_EL_EXIT : strcpy (string, "Exit the event loop"); break;

case DHS_S_FN_ENTRY : strcpy (string, "Entering function"); break;

case DHS_S_FN_EXIT : strcpy (string, "Exiting function"); break;
[...]
lying around. This runs on an IOC and is part of the 'device support'
for FITS files - obviously you can extend the number of codes to any
enum value.
If I was to do this again today I'd probably put it into a table
(hopefully pvLoad-able) and use a genSub (I think the code above
predates genSubs, at least it predates genSubs being wide-spread).
Aloha,
Maren
Rodney R. Porter wrote:

I have implemented similar conversions, though with considerably less than
300 states, using either a genSub record or SNL program.  I choose between
them based on what is needed for other support for the device or instrument.
Rodney Porter

On 7/9/07 4:38 PM, "Emmanuel Mayssat" <[email protected]>
wrote:
Hello,
I have a device that returns error codes as integers (error code stored
in a ai record).
The error codes needs to be mapped to the corresponding strings.
I have approximately 300 error codes.
What would you say is the most elegant way to implement the translation?
Custom record? seq? etc.
Thank you for your advice,
--
E

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System