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/*
ChibiOS - Copyright (C) 2016 Andrew Wygle aka awygle
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file hal_spi_lld.h
* @brief MSP430X SPI subsystem low level driver header.
*
* @addtogroup SPI
* @{
*/
#ifndef HAL_SPI_LLD_H
#define HAL_SPI_LLD_H
#if (HAL_USE_SPI == TRUE) || defined(__DOXYGEN__)
#include "hal_dma_lld.h"
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name MSP430X configuration options
* @{
*/
/**
* @brief SPIA0 driver enable switch.
* @details If set to @p TRUE the support for SPIA0 is included.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_USE_SPIA0) || defined(__DOXYGEN__)
#define MSP430X_SPI_USE_SPIA0 FALSE
#endif
/**
* @brief SPIA1 driver enable switch.
* @details If set to @p TRUE the support for SPIA1 is included.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_USE_SPIA1) || defined(__DOXYGEN__)
#define MSP430X_SPI_USE_SPIA1 FALSE
#endif
/**
* @brief SPIA2 driver enable switch.
* @details If set to @p TRUE the support for SPIA2 is included.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_USE_SPIA2) || defined(__DOXYGEN__)
#define MSP430X_SPI_USE_SPIA2 FALSE
#endif
/**
* @brief SPIA3 driver enable switch.
* @details If set to @p TRUE the support for SPIA3 is included.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_USE_SPIA3) || defined(__DOXYGEN__)
#define MSP430X_SPI_USE_SPIA3 FALSE
#endif
/**
* @brief SPIB0 driver enable switch.
* @details If set to @p TRUE the support for SPIB0 is included.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_USE_SPIB0) || defined(__DOXYGEN__)
#define MSP430X_SPI_USE_SPIB0 FALSE
#endif
/**
* @brief SPIB1 driver enable switch.
* @details If set to @p TRUE the support for SPIB1 is included.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_USE_SPIB1) || defined(__DOXYGEN__)
#define MSP430X_SPI_USE_SPIB1 FALSE
#endif
/**
* @brief SPIB2 driver enable switch.
* @details If set to @p TRUE the support for SPIB2 is included.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_USE_SPIB2) || defined(__DOXYGEN__)
#define MSP430X_SPI_USE_SPIB2 FALSE
#endif
/**
* @brief SPIB3 driver enable switch.
* @details If set to @p TRUE the support for SPIB3 is included.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_USE_SPIB3) || defined(__DOXYGEN__)
#define MSP430X_SPI_USE_SPIB3 FALSE
#endif
/**
* @brief Exclusive DMA enable switch.
* @details If set to @p TRUE the support for exclusive DMA is included.
* @note This increases the size of the compiled executable somewhat.
* @note The default is @p FALSE.
*/
#if !defined(MSP430X_SPI_EXCLUSIVE_DMA) || defined(__DOXYGEN__)
#define MSP430X_SPI_EXCLUSIVE_DMA FALSE
#endif
/**
* @brief SPIA0 clock source switch.
* @details Sets the clock source for SPIA0.
* @note Legal values are @p MSP430X_SMCLK_SRC or @p MSP430X_ACLK_SRC.
* @note The default is @p MSP430X_SMCLK_SRC.
*/
#if !defined(MSP430X_SPIA0_CLK_SRC)
#define MSP430X_SPIA0_CLK_SRC MSP430X_SMCLK_SRC
#endif
/**
* @brief SPIA1 clock source switch.
* @details Sets the clock source for SPIA1.
* @note Legal values are @p MSP430X_SMCLK_SRC or @p MSP430X_ACLK_SRC.
* @note The default is @p MSP430X_SMCLK_SRC.
*/
#if !defined(MSP430X_SPIA1_CLK_SRC)
#define MSP430X_SPIA1_CLK_SRC MSP430X_SMCLK_SRC
#endif
/**
* @brief SPIA2 clock source switch.
* @details Sets the clock source for SPIA2.
* @note Legal values are @p MSP430X_SMCLK_SRC or @p MSP430X_ACLK_SRC.
* @note The default is @p MSP430X_SMCLK_SRC.
*/
#if !defined(MSP430X_SPIA2_CLK_SRC)
#define MSP430X_SPIA2_CLK_SRC MSP430X_SMCLK_SRC
#endif
/**
* @brief SPIA3 clock source switch.
* @details Sets the clock source for SPIA3.
* @note Legal values are @p MSP430X_SMCLK_SRC or @p MSP430X_ACLK_SRC.
* @note The default is @p MSP430X_SMCLK_SRC.
*/
#if !defined(MSP430X_SPIA3_CLK_SRC)
#define MSP430X_SPIA3_CLK_SRC MSP430X_SMCLK_SRC
#endif
/**
* @brief SPIB0 clock source switch.
* @details Sets the clock source for SPIB0.
* @note Legal values are @p MSP430X_SMCLK_SRC or @p MSP430X_ACLK_SRC.
* @note The default is @p MSP430X_SMCLK_SRC.
*/
#if !defined(MSP430X_SPIB0_CLK_SRC)
#define MSP430X_SPIB0_CLK_SRC MSP430X_SMCLK_SRC
#endif
/**
* @brief SPIB1 clock source switch.
* @details Sets the clock source for SPIB1.
* @note Legal values are @p MSP430X_SMCLK_SRC or @p MSP430X_ACLK_SRC.
* @note The default is @p MSP430X_SMCLK_SRC.
*/
#if !defined(MSP430X_SPIB1_CLK_SRC)
#define MSP430X_SPIB1_CLK_SRC MSP430X_SMCLK_SRC
#endif
/**
* @brief SPIB2 clock source switch.
* @details Sets the clock source for SPIB2.
* @note Legal values are @p MSP430X_SMCLK_SRC or @p MSP430X_ACLK_SRC.
* @note The default is @p MSP430X_SMCLK_SRC.
*/
#if !defined(MSP430X_SPIB2_CLK_SRC)
#define MSP430X_SPIB2_CLK_SRC MSP430X_SMCLK_SRC
#endif
/**
* @brief SPIB3 clock source switch.
* @details Sets the clock source for SPIB3.
* @note Legal values are @p MSP430X_SMCLK_SRC or @p MSP430X_ACLK_SRC.
* @note The default is @p MSP430X_SMCLK_SRC.
*/
#if !defined(MSP430X_SPIB3_CLK_SRC)
#define MSP430X_SPIB3_CLK_SRC MSP430X_SMCLK_SRC
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if MSP430X_SPI_USE_SPIA0 && !defined(__MSP430_HAS_EUSCI_A0__)
#error "Cannot find MSP430X_USCI module to use for SPIA0"
#endif
#if MSP430X_SPI_USE_SPIA1 && !defined(__MSP430_HAS_EUSCI_A1__)
#error "Cannot find MSP430X_USCI module to use for SPIA1"
#endif
#if MSP430X_SPI_USE_SPIA2 && !defined(__MSP430_HAS_EUSCI_A2__)
#error "Cannot find MSP430X_USCI module to use for SPIA2"
#endif
#if MSP430X_SPI_USE_SPIA3 && !defined(__MSP430_HAS_EUSCI_A3__)
#error "Cannot find MSP430X_USCI module to use for SPIA3"
#endif
#if MSP430X_SPI_USE_SPIB0 && !defined(__MSP430_HAS_EUSCI_B0__)
#error "Cannot find MSP430X_USCI module to use for SPIB0"
#endif
#if MSP430X_SPI_USE_SPIB1 && !defined(__MSP430_HAS_EUSCI_B1__)
#error "Cannot find MSP430X_USCI module to use for SPIB1"
#endif
#if MSP430X_SPI_USE_SPIB2 && !defined(__MSP430_HAS_EUSCI_B2__)
#error "Cannot find MSP430X_USCI module to use for SPIB2"
#endif
#if MSP430X_SPI_USE_SPIB3 && !defined(__MSP430_HAS_EUSCI_B3__)
#error "Cannot find MSP430X_USCI module to use for SPIB3"
#endif
#if MSP430X_SPI_USE_SPIA0
#ifdef MSP430X_USCI_A0_USED
#error "USCI module A0 already in use - SPIA0 not available"
#else
#define MSP430X_USCI_A0_USED
#endif
#endif
#if MSP430X_SPI_USE_SPIA1
#ifdef MSP430X_USCI_A1_USED
#error "USCI module A1 already in use - SPIA1 not available"
#else
#define MSP430X_USCI_A1_USED
#endif
#endif
#if MSP430X_SPI_USE_SPIA2
#ifdef MSP430X_USCI_A2_USED
#error "USCI module A2 already in use - SPIA2 not available"
#else
#define MSP430X_USCI_A2_USED
#endif
#endif
#if MSP430X_SPI_USE_SPIA3
#ifdef MSP430X_USCI_A3_USED
#error "USCI module A3 already in use - SPIA3 not available"
#else
#define MSP430X_USCI_A3_USED
#endif
#endif
#if MSP430X_SPI_USE_SPIB0
#ifdef MSP430X_USCI_B0_USED
#error "USCI module B0 already in use - SPIB0 not available"
#else
#define MSP430X_USCI_B0_USED
#endif
#endif
#if MSP430X_SPI_USE_SPIB1
#ifdef MSP430X_USCI_B1_USED
#error "USCI module B1 already in use - SPIB1 not available"
#else
#define MSP430X_USCI_B1_USED
#endif
#endif
#if MSP430X_SPI_USE_SPIB2
#ifdef MSP430X_USCI_B2_USED
#error "USCI module B2 already in use - SPIB2 not available"
#else
#define MSP430X_USCI_B2_USED
#endif
#endif
#if MSP430X_SPI_USE_SPIB3
#ifdef MSP430X_USCI_B3_USED
#error "USCI module B3 already in use - SPIB3 not available"
#else
#define MSP430X_USCI_B3_USED
#endif
#endif
#if defined(MSP430X_SPIA0_TX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIA0 TX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIA0_RX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIA0 RX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIA1_TX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIA1 TX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIA1_RX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIA1 RX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIA2_TX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIA2 TX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIA2_RX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIA2 RX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIA3_TX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIA3 TX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIA3_RX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIA3 RX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIB0_TX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIB0 TX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIB0_RX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIB0 RX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIB1_TX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIB1 TX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIB1_RX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIB1 RX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIB2_TX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIB2 TX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIB2_RX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIB2 RX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIB3_TX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIB3 TX, but requested index is invalid"
#endif
#if defined(MSP430X_SPIB3_RX_DMA) && (MSP430X_SPI_DMA >= MSP430X_DMA_CHANNELS)
#error "Requested DMA for SPIB3 RX, but requested index is invalid"
#endif
/* TODO figure out a way to check for conflicting DMA channels */
#if MSP430X_SPIA0_CLK_SRC == MSP430X_ACLK_SRC
#define MSP430X_SPIA0_CLK_FREQ MSP430X_ACLK_FREQ
#define MSP430X_SPIA0_UCSSEL UCSSEL__ACLK
#elif MSP430X_SPIA0_CLK_SRC == MSP430X_SMCLK_SRC
#define MSP430X_SPIA0_CLK_FREQ MSP430X_SMCLK_FREQ
#define MSP430X_SPIA0_UCSSEL UCSSEL__SMCLK
#endif
#if MSP430X_SPIA1_CLK_SRC == MSP430X_ACLK_SRC
#define MSP430X_SPIA1_CLK_FREQ MSP430X_ACLK_FREQ
#define MSP430X_SPIA1_UCSSEL UCSSEL__ACLK
#elif MSP430X_SPIA1_CLK_SRC == MSP430X_SMCLK_SRC
#define MSP430X_SPIA1_CLK_FREQ MSP430X_SMCLK_FREQ
#define MSP430X_SPIA1_UCSSEL UCSSEL__SMCLK
#endif
#if MSP430X_SPIA2_CLK_SRC == MSP430X_ACLK_SRC
#define MSP430X_SPIA2_CLK_FREQ MSP430X_ACLK_FREQ
#define MSP430X_SPIA2_UCSSEL UCSSEL__ACLK
#elif MSP430X_SPIA2_CLK_SRC == MSP430X_SMCLK_SRC
#define MSP430X_SPIA2_CLK_FREQ MSP430X_SMCLK_FREQ
#define MSP430X_SPIA2_UCSSEL UCSSEL__SMCLK
#endif
#if MSP430X_SPIA3_CLK_SRC == MSP430X_ACLK_SRC
#define MSP430X_SPIA3_CLK_FREQ MSP430X_ACLK_FREQ
#define MSP430X_SPIA3_UCSSEL UCSSEL__ACLK
#elif MSP430X_SPIA3_CLK_SRC == MSP430X_SMCLK_SRC
#define MSP430X_SPIA3_CLK_FREQ MSP430X_SMCLK_FREQ
#define MSP430X_SPIA3_UCSSEL UCSSEL__SMCLK
#endif
#if MSP430X_SPIB0_CLK_SRC == MSP430X_ACLK_SRC
#define MSP430X_SPIB0_CLK_FREQ MSP430X_ACLK_FREQ
#define MSP430X_SPIB0_UCSSEL UCSSEL__ACLK
#elif MSP430X_SPIB0_CLK_SRC == MSP430X_SMCLK_SRC
#define MSP430X_SPIB0_CLK_FREQ MSP430X_SMCLK_FREQ
#define MSP430X_SPIB0_UCSSEL UCSSEL__SMCLK
#endif
#if MSP430X_SPIB1_CLK_SRC == MSP430X_ACLK_SRC
#define MSP430X_SPIB1_CLK_FREQ MSP430X_ACLK_FREQ
#define MSP430X_SPIB1_UCSSEL UCSSEL__ACLK
#elif MSP430X_SPIB1_CLK_SRC == MSP430X_SMCLK_SRC
#define MSP430X_SPIB1_CLK_FREQ MSP430X_SMCLK_FREQ
#define MSP430X_SPIB1_UCSSEL UCSSEL__SMCLK
#endif
#if MSP430X_SPIB2_CLK_SRC == MSP430X_ACLK_SRC
#define MSP430X_SPIB2_CLK_FREQ MSP430X_ACLK_FREQ
#define MSP430X_SPIB2_UCSSEL UCSSEL__ACLK
#elif MSP430X_SPIB2_CLK_SRC == MSP430X_SMCLK_SRC
#define MSP430X_SPIB2_CLK_FREQ MSP430X_SMCLK_FREQ
#define MSP430X_SPIB2_UCSSEL UCSSEL__SMCLK
#endif
#if MSP430X_SPIB3_CLK_SRC == MSP430X_ACLK_SRC
#define MSP430X_SPIB3_CLK_FREQ MSP430X_ACLK_FREQ
#define MSP430X_SPIB3_UCSSEL UCSSEL__ACLK
#elif MSP430X_SPIB3_CLK_SRC == MSP430X_SMCLK_SRC
#define MSP430X_SPIB3_CLK_FREQ MSP430X_SMCLK_FREQ
#define MSP430X_SPIB3_UCSSEL UCSSEL__SMCLK
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Type of a structure representing an SPI driver.
*/
typedef struct SPIDriver SPIDriver;
/**
* @brief SPI notification callback type.
*
* @param[in] spip pointer to the @p SPIDriver object triggering the
* callback
*/
typedef void (*spicallback_t)(SPIDriver *spip);
/**
* @brief Enumerated type for SPI bit order.
*/
typedef enum {
MSP430X_SPI_BO_LSB = 0,
MSP430X_SPI_BO_MSB = 1
} msp430x_spi_bit_order_t;
/**
* @brief Enumerated type for SPI data size.
*/
typedef enum {
MSP430X_SPI_DS_EIGHT = 0,
MSP430X_SPI_DS_SEVEN = 1
} msp430x_spi_data_size_t;
/**
* @brief Driver configuration structure.
* @note Implementations may extend this structure to contain more,
* architecture dependent, fields.
*/
typedef struct {
/**
* @brief Operation complete callback or @p NULL.
*/
spicallback_t end_cb;
/* End of the mandatory fields.*/
/**
* @brief The chip select line.
* @note This may be PAL_NOLINE to indicate that hardware chip select is used.
*/
ioline_t ss_line;
/**
* @brief The bit rate of the SPI interface.
* @note Nearest available rate is used.
*/
uint32_t bit_rate;
/**
* @brief The bit order of the peripheral - LSB or MSB first.
*/
msp430x_spi_bit_order_t bit_order;
/**
* @brief The data size of the peripheral - 7 or 8 bits.
*/
msp430x_spi_data_size_t data_size;
/**
* @brief The SPI mode to use - 0 through 3.
*/
uint8_t spi_mode;
#if MSP430X_SPI_EXCLUSIVE_DMA == TRUE || defined(__DOXYGEN__)
/**
* @brief The index of the TX DMA channel.
* @note This may be >MSP430X_DMA_CHANNELS to indicate that exclusive DMA is not used.
*/
uint8_t dmatx_index;
/**
* @brief The index of the RX DMA channel.
* @note This may be >MSP430X_DMA_CHANNELS to indicate that exclusive DMA is not used.
*/
uint8_t dmarx_index;
#endif
} SPIConfig;
/**
* @brief MSP430X SPI register structure.
*/
typedef struct {
uint16_t ctlw0;
uint16_t _padding0;
uint16_t _padding1;
uint16_t brw;
uint16_t statw_b;
uint16_t statw_a;
uint16_t rxbuf;
uint16_t txbuf;
} msp430x_spi_reg_t;
/**
* @brief Structure representing an SPI driver.
* @note Implementations may extend this structure to contain more,
* architecture dependent, fields.
*/
struct SPIDriver {
/**
* @brief Driver state.
*/
spistate_t state;
/**
* @brief Current configuration data.
*/
const SPIConfig *config;
#if (SPI_USE_WAIT == TRUE) || defined(__DOXYGEN__)
/**
* @brief Waiting thread.
*/
thread_reference_t thread;
#endif /* SPI_USE_WAIT */
#if (SPI_USE_MUTUAL_EXCLUSION == TRUE) || defined(__DOXYGEN__)
/**
* @brief Mutex protecting the peripheral.
*/
mutex_t mutex;
#endif
#if defined(SPI_DRIVER_EXT_FIELDS)
SPI_DRIVER_EXT_FIELDS
#endif
/* End of the mandatory fields.*/
/**
* @brief Configuration registers.
*/
msp430x_spi_reg_t * regs;
/**
* @brief Interrupt flag register.
*/
volatile uint16_t * ifg;
/**
* @brief TX DMA request.
*/
msp430x_dma_req_t tx_req;
/**
* @brief RX DMA request.
*/
msp430x_dma_req_t rx_req;
#if MSP430X_SPI_EXCLUSIVE_DMA == TRUE || defined(__DOXYGEN__)
/**
* @brief TX DMA stream.
*/
msp430x_dma_ch_t dmatx;
/**
* @brief RX DMA stream.
*/
msp430x_dma_ch_t dmarx;
#endif
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if (MSP430X_SPI_USE_SPIA0 == TRUE) && !defined(__DOXYGEN__)
extern SPIDriver SPIDA0;
#endif
#if (MSP430X_SPI_USE_SPIA1 == TRUE) && !defined(__DOXYGEN__)
extern SPIDriver SPIDA1;
#endif
#if (MSP430X_SPI_USE_SPIA2 == TRUE) && !defined(__DOXYGEN__)
extern SPIDriver SPIDA2;
#endif
#if (MSP430X_SPI_USE_SPIA3 == TRUE) && !defined(__DOXYGEN__)
extern SPIDriver SPIDA3;
#endif
#if (MSP430X_SPI_USE_SPIB0 == TRUE) && !defined(__DOXYGEN__)
extern SPIDriver SPIDB0;
#endif
#if (MSP430X_SPI_USE_SPIB1 == TRUE) && !defined(__DOXYGEN__)
extern SPIDriver SPIDB1;
#endif
#if (MSP430X_SPI_USE_SPIB2 == TRUE) && !defined(__DOXYGEN__)
extern SPIDriver SPIDB2;
#endif
#if (MSP430X_SPI_USE_SPIB3 == TRUE) && !defined(__DOXYGEN__)
extern SPIDriver SPIDB3;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void spi_lld_init(void);
void spi_lld_start(SPIDriver *spip);
void spi_lld_stop(SPIDriver *spip);
void spi_lld_select(SPIDriver *spip);
void spi_lld_unselect(SPIDriver *spip);
void spi_lld_ignore(SPIDriver *spip, size_t n);
void spi_lld_exchange(SPIDriver *spip, size_t n,
const void *txbuf, void *rxbuf);
void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf);
void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf);
uint8_t spi_lld_polled_exchange(SPIDriver *spip, uint8_t frame);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_SPI == TRUE */
#endif /* HAL_SPI_LLD_H */
/** @} */
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