diff options
Diffstat (limited to 'nuttx/arch/arm/src/lpc17xx/lpc17_internal.h')
| -rwxr-xr-x | nuttx/arch/arm/src/lpc17xx/lpc17_internal.h | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h b/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h index 41fe549b4..2c684767c 100755 --- a/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h @@ -555,22 +555,26 @@ EXTERN int lpc17_dumpgpio(uint16_t pinset, const char *msg); EXTERN void lpc17_clrpend(int irq); /************************************************************************************ - * Name: lpc17_spi/ssp0/ssp1select and lpc17_spi/ssp0/ssp1status + * Name: lpc17_spi/ssp0/ssp1select, lpc17_spi/ssp0/ssp1status, and + * lpc17_spi/ssp0/ssp1cmddata * * Description: - * The external functions, lpc17_spi/ssp0/ssp1select and lpc17_spi/ssp0/ssp1status - * must be provided by board-specific logic. They are implementations of the select - * and status methods of the SPI interface defined by struct spi_ops_s (see - * include/nuttx/spi.h). All other methods (including up_spiinitialize()) - * are provided by common LPC17xx logic. To use this common SPI logic on your - * board: + * These external functions must be provided by board-specific logic. They are + * implementations of the select, status, and cmddata methods of the SPI interface + * defined by struct spi_ops_s (see include/nuttx/spi.h). All other methods + * including up_spiinitialize()) are provided by common LPC17xx logic. To use + * this common SPI logic on your board: * * 1. Provide logic in lpc17_boardinitialize() to configure SPI/SSP chip select * pins. * 2. Provide lpc17_spi/ssp0/ssp1select() and lpc17_spi/ssp0/ssp1status() functions * in your board-specific logic. These functions will perform chip selection * and status operations using GPIOs in the way your board is configured. - * 3. Add a calls to up_spiinitialize() in your low level application + * 2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide + * lpc17_spi/ssp0/ssp1cmddata() functions in your board-specific logic. These + * functions will perform cmd/data selection operations using GPIOs in the way + * your board is configured. + * 3. Add a call to up_spiinitialize() in your low level application * initialization logic * 4. The handle returned by up_spiinitialize() may then be used to bind the * SPI driver to higher level logic (e.g., calling @@ -585,14 +589,23 @@ enum spi_dev_e; #ifdef CONFIG_LPC17_SPI EXTERN void lpc17_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t lpc17_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +#ifdef CONFIG_SPI_CMDDATA +EXTERN int lpc17_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif #endif #ifdef CONFIG_LPC17_SSP0 EXTERN void lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +#ifdef CONFIG_SPI_CMDDATA +EXTERN int lpc17_ssp0cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif #endif #ifdef CONFIG_LPC17_SSP1 EXTERN void lpc17_ssp1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t lpc17_ssp1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); +#ifdef CONFIG_SPI_CMDDATA +EXTERN int lpc17_ssp1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); +#endif #endif /**************************************************************************** |