Print plain text error message rather than error code

[Olivier-ProGlove]

I recently got Error: 1 while I was expected my mcumgr command line to work. See my issue report here: https://github.com/zephyrproject-rtos/zephyr/issues/7924#issuecomment-407478098

Luckily @nvlsianpu pointed me the statement in the documentation saying this error was expected:

Note that if you try to send the very same image that is already flashed in slot-0 then the procedure will not complete successfully since the hash values for both slots will be identical.

I would not have this issue if mcumgr would have returned a plain text error message.

[Olivier-ProGlove]

What means Error: 6?

[n3rd4i]

I believe this error means:

/**
 * mcumgr error codes.
 */

#define MGMT_ERR_EBADSTATE 6 /* Current state disallows command. */

Error code(s) can be found in this header file (from your zephyr project root): modules\lib\mcumgr\mgmt\include\mgmt\mgmt.h

[sparkhead95]

What means Error: 6?

Hi @Olivier-ProGlove did you figure out how to fix Error: 6? I don't know what's causing it or how to fix it