I used Diavolino with the Music shield.
I could successfully upload the v1_14 example program to the chip. But it could never initialize the SD card. I tried some other SD card example using the music shield, but they also failed on initializing the SD card.
I tried a number of micro SD cards, like Toshiba 1GB, SANDISK 8GB, Apacer and even a KingMax micro SD card. But still no success.
I tried with the original music shield example, there is no output Serial Monitor. But after I uncommented some of the println or print in mmc.cpp or even added some, I found out that the MmcCommand 0x40 could not return 0x01.
I wonder if my shield is broken or not?