SPI:
- Master Out, Slave In (MOSI) - which is the data going from the master to the slave
- Master In, Slave Out (MISO) - which is the data going from the slave to the master
- Serial Clock (SCK) - when this toggles both the master and the slave sample the next bit
- Slave Select (SS) - this tells a particular slave to go "active"
On the Arduino.... (pin#'s 13, 12, 12 and usually 10 for SS pin)..... connected to the SD card socket... (directly.. or with level shift/voltage divider..or even just direct if I make the compatible circuit a +3.3v version)..
Issues with ALSO connecting a YX5200 chip to same SD card....?? (however that is done/same way as DFPlayer... I havent checked out the schematic for it yet...more or less taking schematic, dumping it into eagle.. add my 'Arduino' compatible circuit/IO breakouts...etc..etc and also have the SPI lines connected to same SD socket)
thats my question.
Hope that clears it up?
