Error Codes

These identifiers provide a common set of error codes that all packages can agree on. More...

Collaboration diagram for Error Codes:

Modules
	Additional errors used by networking
	Additional user defined error codes
	CANopen Data link layer errors
	CANopen SDO transfer errors
	CANopen application layer errors
	CANopen device profile specific errors
	Common error codes
	IPC/network software -- argument errors
	IPC/network software -- operational errors
	Non-blocking and interrupt i/o

Detailed Description

These identifiers provide a common set of error codes that all packages can agree on.

It doesn't preclude them defining their own error return system, but this is a preferable system to use to help error support be as general as possible.

We try and conform to the ANSI/POSIX error code format, namely starting with the character 'E'

Attention

All error codes will be returned as negative values. That means a function does not return ERR_PERM but it returns -ERR_PERM. That means you simply need to check for negative return values to detect errors.