I use MF RC531 with PIC18F4550 via SPI.
When I init RC531 OK, but when read all register is not correct.
It's not same as default value (written in datasheet).
How can I check RC531 is OK or how ca ...
I run CCS (ex_fat) example with PIC18F4550 and SD card. I can create folder and file on SD card, but when I use PC to explore that SD card, there aren't any folder and file on SD card. But I check wit ...