diff options
Diffstat (limited to 'FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/spi.h')
| -rw-r--r-- | FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/spi.h | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/spi.h b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/spi.h index b011fe3ce..7e4b04ae2 100644 --- a/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/spi.h +++ b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/spi.h @@ -9,11 +9,7 @@ struct metal_spi; /*! @brief The configuration for a SPI transfer */ struct metal_spi_config { /*! @brief The protocol for the SPI transfer */ - enum { - METAL_SPI_SINGLE, - METAL_SPI_DUAL, - METAL_SPI_QUAD - } protocol; + enum { METAL_SPI_SINGLE, METAL_SPI_DUAL, METAL_SPI_QUAD } protocol; /*! @brief The polarity of the SPI transfer, equivalent to CPOL */ unsigned int polarity : 1; @@ -25,11 +21,24 @@ struct metal_spi_config { unsigned int cs_active_high : 1; /*! @brief The chip select ID to activate for the SPI transfer */ unsigned int csid; + /*! @brief The spi command frame number (cycles = num * frame_len) */ + unsigned int cmd_num; + /*! @brief The spi address frame number */ + unsigned int addr_num; + /*! @brief The spi dummy frame number */ + unsigned int dummy_num; + /*! @brief The Dual/Quad spi mode selection.*/ + enum { + MULTI_WIRE_ALL, + MULTI_WIRE_DATA_ONLY, + MULTI_WIRE_ADDR_DATA + } multi_wire; }; struct metal_spi_vtable { void (*init)(struct metal_spi *spi, int baud_rate); - int (*transfer)(struct metal_spi *spi, struct metal_spi_config *config, size_t len, char *tx_buf, char *rx_buf); + int (*transfer)(struct metal_spi *spi, struct metal_spi_config *config, + size_t len, char *tx_buf, char *rx_buf); int (*get_baud_rate)(struct metal_spi *spi); int (*set_baud_rate)(struct metal_spi *spi, int baud_rate); }; @@ -42,23 +51,29 @@ struct metal_spi { /*! @brief Get a handle for a SPI device * @param device_num The index of the desired SPI device * @return A handle to the SPI device, or NULL if the device does not exist*/ -struct metal_spi *metal_spi_get_device(int device_num); +struct metal_spi *metal_spi_get_device(unsigned int device_num); /*! @brief Initialize a SPI device with a certain baud rate * @param spi The handle for the SPI device to initialize * @param baud_rate The baud rate to set the SPI device to */ -inline void metal_spi_init(struct metal_spi *spi, int baud_rate) { spi->vtable->init(spi, baud_rate); } +__inline__ void metal_spi_init(struct metal_spi *spi, int baud_rate) { + spi->vtable->init(spi, baud_rate); +} /*! @brief Perform a SPI transfer * @param spi The handle for the SPI device to perform the transfer * @param config The configuration for the SPI transfer. * @param len The number of bytes to transfer - * @param tx_buf The buffer to send over the SPI bus. Must be len bytes long. If NULL, the SPI will transfer the value 0. - * @param rx_buf The buffer to receive data into. Must be len bytes long. If NULL, the SPI will ignore received bytes. + * @param tx_buf The buffer to send over the SPI bus. Must be len bytes long. If + * NULL, the SPI will transfer the value 0. + * @param rx_buf The buffer to receive data into. Must be len bytes long. If + * NULL, the SPI will ignore received bytes. * @return 0 if the transfer succeeds */ -inline int metal_spi_transfer(struct metal_spi *spi, struct metal_spi_config *config, size_t len, char *tx_buf, char *rx_buf) { +__inline__ int metal_spi_transfer(struct metal_spi *spi, + struct metal_spi_config *config, size_t len, + char *tx_buf, char *rx_buf) { return spi->vtable->transfer(spi, config, len, tx_buf, rx_buf); } @@ -66,13 +81,17 @@ inline int metal_spi_transfer(struct metal_spi *spi, struct metal_spi_config *co * @param spi The handle for the SPI device * @return The baud rate in Hz */ -inline int metal_spi_get_baud_rate(struct metal_spi *spi) { return spi->vtable->get_baud_rate(spi); } +__inline__ int metal_spi_get_baud_rate(struct metal_spi *spi) { + return spi->vtable->get_baud_rate(spi); +} /*! @brief Set the current baud rate of the SPI device * @param spi The handle for the SPI device * @param baud_rate The desired baud rate of the SPI device * @return 0 if the baud rate is successfully changed */ -inline int metal_spi_set_baud_rate(struct metal_spi *spi, int baud_rate) { return spi->vtable->set_baud_rate(spi, baud_rate); } +__inline__ int metal_spi_set_baud_rate(struct metal_spi *spi, int baud_rate) { + return spi->vtable->set_baud_rate(spi, baud_rate); +} #endif |