SendMMCCmdManual Function

Microchip MDD File System Interface

MDDFS Interface Library Help

MMC_RESPONSE SendMMCCmdManual(
    BYTE cmd, 
    DWORD address
);

Description

SendMMCCmd prepares a command packet and sends it out over the SPI interface. Response data of type 'R1' (as indicated by the SD/MMC product manual is returned. This function is intended to be used when the clock speed of a PIC18 device is so high that the maximum SPI divider can't reduce the clock below the maximum SD card initialization sequence speed.

Preconditions

None.

Return Values

Return Values	Description
MMC_RESPONSE	The response from the card Bit 0 - Idle state Bit 1 - Erase Reset Bit 2 - Illegal Command Bit 3 - Command CRC Error Bit 4 - Erase Sequence Error Bit 5 - Address Error Bit 6 - Parameter Error Bit 7 - Unused. Always 0.

Side Effects

None.

Remarks

None.

APIs > SD-SPI Physical Layer > Internal Members > SendMMCCmdManual Function

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