Fixed time elapsed for each frame reading and decoding.

Signed-off-by: Paulo Pires <pjpires@gmail.com>
Normalized sleep between writes to BITalino device to 500 milliseconds.

Signed-off-by: Paulo Pires <pjpires@gmail.com>
Removed debug logging. APIs shouldn't print stuff, sorry.

Signed-off-by: Paulo Pires <pjpires@gmail.com>