spi.c File Reference

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Detailed Description

SPI implementation (license: GPLv2).

Author:

Roland Riegel

Functions
void	spi_init ()
	Initializes the SPI interface.
void	spi_send_byte (uint8_t b)
	Sends a byte over the SPI bus.
uint8_t	spi_rec_byte ()
	Receives a byte from the SPI bus.
void	spi_send_data (const uint8_t *data, uint16_t data_len)
	Sends data contained in a buffer over the SPI bus.
void	spi_rec_data (uint8_t *buffer, uint16_t buffer_len)
	Receives multiple bytes from the SPI bus and writes them to a buffer.
void	spi_low_frequency ()
	Switches to the lowest SPI frequency possible.
void	spi_high_frequency ()
	Switches to the highest SPI frequency possible.