deadeye_pramath said:I don't want to deal with .txt files. I want to initialize the mmc card and to read 512bytes of data from it using the PIC microcontroller and store that data in the RAM of the microcontroller and then send 32bytes at a time to another slave on the SPI.
Please help me ?
rongo024 said:http://www.dharmanitech.com/2009/01/sd-card-interfacing-with-atmega8-fat32.html
FvM said:I wonder, what's so difficult with finding the respective manufaturer's application note and example code?
https://ww1.microchip.com/downloads/en/AppNotes/01045b.pdf
https://ww1.microchip.com/downloads/en/AppNotes/Microchip MDD File System 1.2.1 Installer.zip
FvM said:I wonder, what's so difficult with finding the respective manufaturer's application note and example code?
https://ww1.microchip.com/downloads/en/AppNotes/01045b.pdf
https://ww1.microchip.com/downloads/en/AppNotes/Microchip MDD File System 1.2.1 Installer.zip
If I understand right, you are complaining, that the Microchip library is useless for you, because the demonstration software has beenThis document entails the use of the PICtail™ Daughter Board for SD and MMC, Microchip product number AC164122 .
According to manufacturer statements, it's generally handled by the SD card controller.how about wear leveling? Is it included in microchip library?
If I understand right, you are complaining, that the Microchip library is useless for you, because the demonstration software has been
designed using a specific interface board?.
FvM said:The PICtail interface board does effectively nothing essential. I fear, the problem is, that you don't know how to "read"
the schematic or the code, otherwise you won't ask. A SD card is operating at 3.3V, if the µP also uses low voltage, no interface
is needed (except for a connector).
FvM said:I didn't review the application in detail. But basically, the SD card has to be connected to the hardware SPI interface: SCK, SDO,
SDI and a pin acting as CS signal. The PICtail has buffer ICs to interface the 3.3V card with a 5V operated processor. You either
need to operate the processor at 3.3V or add similar level converters.
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