Some functions don't manage readResponse correctly (SAMConfig return always false)

[mywalkb]

I see some functions don't manage correctly the length 0 from readResponse.
For example SAMConfig return 0 length that it's correct from datasheet, but for this library return false.
I will not make a PR because because none manage it, if someone is interested I patched here, in this patch there are also some improvements.

[Cincinnatu]

Hello！Can you describe the changes that you have made?

[Lesords]

Hello,

I'm going to close this issue, feel free to re-open it if you have any other questions.

[Autocommentary]