-------------------------------- SDcard Board -------------------------------- Connector 1 DO -> 7 2 GND -> 6 3 VCC -> 4 4 CS -> 1 5 DI -> 2 6 CLK -> 5 - SDcard ------------------\ | \ | 8 7 6 5 4 3 2 1 9 | | | 1 CS 2 CMD/DI 3 GND 4 VCC 5 CLK/SCLK 6 GND 7 DAT/DO 8 -- 9 -- -------------------------------- Quickdev Header -------------------------------- top/usb 1 GND -> GND 2 ISP RST - RESET - 3 ISP SCK - PB7 - CLK 4 ISP MISO - PB6 - DI 5 ISP MOSI - PB5 - DO 6 MMC CS - PB4 - CS 7 VCC -> VCC #define SPI_DI 6 MISO #define SPI_DO 5 MOSI