Shorten your connecting wires as much as you possibly can and try to use all the same length. I would expect this to allow you to be able to use SPI_FULL_SPEED and probably get rid of your random no card errors too.
Regards,
Graham
Shorten your connecting wires as much as you possibly can and try to use all the same length. I would expect this to allow you to be able to use SPI_FULL_SPEED and probably get rid of your random no card errors too.
Regards,
Graham