glidernet / diy-tracker

Do-it-Yourself OGN Tracker software
GNU General Public License v3.0
27 stars 18 forks source link

Support old MMC and SDC1 cards #4

Closed kedder closed 6 years ago

kedder commented 6 years ago

These cards do not support CMD8 command and return response 0x05 instead. According to http://elm-chan.org/docs/mmc/mmc_e.html:

If the CMD8 is rejected with illigal command error (0x05), the card is SDC version 1 or MMC version 3.

This adds support for such cards.