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driver: updated SPI driver interface

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Hauke Petersen 2014-06-20 17:52:55 +02:00 committed by Hauke Petersen
parent d7fe933fe6
commit 4513eb7f77
1 changed files with 9 additions and 4 deletions
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13
drivers/include/periph/spi.h
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@ -14,7 +14,9 @@
* @file
* @brief Low-level SPI peripheral driver interface definitions
*
* TODO: optimize interface for master AND slave usage, interface is focused on master mode so far...
* The current design of this interface targets implementations that use the SPI in blocking mode.
*
* TODO: add means for asynchronous SPI usage
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*/
@ -90,7 +92,7 @@ int spi_init_master(spi_t dev, spi_conf_t conf, uint32_t speed);
* @return -1 on undefined SPI device
* @return -2 on unavailable speed value
*/
int spi_init_slave(spi_t dev, spi_conf_t conf, char (*cb)(char));
int spi_init_slave(spi_t dev, spi_conf_t conf, char (*cb)(unsigned int seq, char data));
/**
* @brief Transfer one byte on the given SPI bus
@ -115,7 +117,7 @@ int spi_transfer_byte(spi_t dev, char out, char *in);
* @return Number of bytes that were transfered
* @return -1 on error
*/
int spi_transfer_bytes(spi_t dev, char *out, char *in, int length);
int spi_transfer_bytes(spi_t dev, char *out, char *in, unsigned int length);
/**
* @brief Transfer one byte to/from a given register address
@ -150,7 +152,7 @@ int spi_transfer_reg(spi_t dev, uint8_t reg, char *out, char *in);
* @return Number of bytes that were transfered
* @return -1 on error
*/
int spi_transfer_regs(spi_t dev, uint8_t reg, char *out, char *in, int length);
int spi_transfer_regs(spi_t dev, uint8_t reg, char *out, char *in, unsigned int length);
/**
* @brief Power on the given SPI device
@ -171,3 +173,6 @@ int spi_poweron(spi_t dev);
* @return -1 on undefined device
*/
int spi_poweroff(spi_t dev);
#endif /* __SPI_H */
/** @} */