lib/card_spi_internals.h File Reference

Things used internally by the Card SPI driver. More...

Defines
#define	CARD_SPI_ENABLE_BIT   (1 << 15)
#define	CARD_SPI_IRQ_BIT   (1 << 14)
#define	CARD_SPI_SLOT_CS_BIT   (1 << 13)
#define	CARD_SPI_BUSY_BIT   (1 << 7)
#define	CARD_SPI_CS_HOLD_BIT   (1 << 6)
#define	CARD_SPI_BUSY_TEST   (CARD_CR1 & CARD_SPI_BUSY_BIT)
#define	CARD_SPI_WAIT_IDLE()   while ( CARD_SPI_BUSY_TEST);

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Detailed Description

Things used internally by the Card SPI driver.

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Define Documentation

#define CARD_SPI_BUSY_BIT   (1 << 7)

The busy bit in the control register (0 idle, 1 busy)

#define CARD_SPI_BUSY_TEST   (CARD_CR1 & CARD_SPI_BUSY_BIT)

Test if the SPI bus is busy (0 is idle, non-zero busy)

#define CARD_SPI_CS_HOLD_BIT   (1 << 6)

The Chip Select Hold bit

#define CARD_SPI_ENABLE_BIT   (1 << 15)

Enable the SPI controller

#define CARD_SPI_IRQ_BIT   (1 << 14)

Generate an interrupt request when the transfer is complete

#define CARD_SPI_SLOT_CS_BIT   (1 << 13)

The Chip Select signal for the DS Slot

 

#define CARD_SPI_WAIT_IDLE

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while ( CARD_SPI_BUSY_TEST);

Wait for the SPI bus to become idle

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