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/* -----------------------------------------------------------------------------
* Copyright (c) 2013-2014 ARM Ltd.
*
* This software is provided 'as-is', without any express or implied warranty.
* In no event will the authors be held liable for any damages arising from
* the use of this software. Permission is granted to anyone to use this
* software for any purpose, including commercial applications, and to alter
* it and redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software in
* a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*
*
* $Date: 17. Apr 2014
* $Revision: V2.01
*
* Project: SPI (Serial Peripheral Interface) Driver definitions
* -------------------------------------------------------------------------- */
/* History:
* Version 2.01
* Renamed status flag "tx_rx_busy" to "busy"
* Version 2.00
* New simplified driver:
* complexity moved to upper layer (especially data handling)
* more unified API for different communication interfaces
* Added:
* Slave Mode
* Half-duplex Modes
* Configurable number of data bits
* Support for TI Mode and Microwire
* Changed prefix ARM_DRV -> ARM_DRIVER
* Version 1.10
* Namespace prefix ARM_ added
* Version 1.01
* Added "send_done_event" to Capabilities
* Version 1.00
* Initial release
*/
#ifndef __DRIVER_SPI_H
#define __DRIVER_SPI_H
#include "Driver_Common.h"
#define ARM_SPI_API_VERSION ARM_DRIVER_VERSION_MAJOR_MINOR(2,00) /* API version */
/****** SPI Control Codes *****/
#define ARM_SPI_CONTROL_Pos 0
#define ARM_SPI_CONTROL_Msk (0xFFUL << ARM_SPI_CONTROL_Pos)
/*----- SPI Control Codes: Mode -----*/
#define ARM_SPI_MODE_INACTIVE (0x00UL << ARM_SPI_CONTROL_Pos) ///< SPI Inactive
#define ARM_SPI_MODE_MASTER (0x01UL << ARM_SPI_CONTROL_Pos) ///< SPI Master (Output on MOSI, Input on MISO); arg = Bus Speed in bps
#define ARM_SPI_MODE_SLAVE (0x02UL << ARM_SPI_CONTROL_Pos) ///< SPI Slave (Output on MISO, Input on MOSI)
#define ARM_SPI_MODE_MASTER_SIMPLEX (0x03UL << ARM_SPI_CONTROL_Pos) ///< SPI Master (Output/Input on MOSI); arg = Bus Speed in bps
#define ARM_SPI_MODE_SLAVE_SIMPLEX (0x04UL << ARM_SPI_CONTROL_Pos) ///< SPI Slave (Output/Input on MISO)
/*----- SPI Control Codes: Mode Parameters: Frame Format -----*/
#define ARM_SPI_FRAME_FORMAT_Pos 8
#define ARM_SPI_FRAME_FORMAT_Msk (7UL << ARM_SPI_FRAME_FORMAT_Pos)
#define ARM_SPI_CPOL0_CPHA0 (0UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Clock Polarity 0, Clock Phase 0 (default)
#define ARM_SPI_CPOL0_CPHA1 (1UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Clock Polarity 0, Clock Phase 1
#define ARM_SPI_CPOL1_CPHA0 (2UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Clock Polarity 1, Clock Phase 0
#define ARM_SPI_CPOL1_CPHA1 (3UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Clock Polarity 1, Clock Phase 1
#define ARM_SPI_TI_SSI (4UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Texas Instruments Frame Format
#define ARM_SPI_MICROWIRE (5UL << ARM_SPI_FRAME_FORMAT_Pos) ///< National Microwire Frame Format
/*----- SPI Control Codes: Mode Parameters: Data Bits -----*/
#define ARM_SPI_DATA_BITS_Pos 12
#define ARM_SPI_DATA_BITS_Msk (0x3FUL << ARM_SPI_DATA_BITS_Pos)
#define ARM_SPI_DATA_BITS(n) (((n) & 0x3F) << ARM_SPI_DATA_BITS_Pos) ///< Number of Data bits
/*----- SPI Control Codes: Mode Parameters: Bit Order -----*/
#define ARM_SPI_BIT_ORDER_Pos 18
#define ARM_SPI_BIT_ORDER_Msk (1UL << ARM_SPI_BIT_ORDER_Pos)
#define ARM_SPI_MSB_LSB (0UL << ARM_SPI_BIT_ORDER_Pos) ///< SPI Bit order from MSB to LSB (default)
#define ARM_SPI_LSB_MSB (1UL << ARM_SPI_BIT_ORDER_Pos) ///< SPI Bit order from LSB to MSB
/*----- SPI Control Codes: Mode Parameters: Slave Select Mode -----*/
#define ARM_SPI_SS_MASTER_MODE_Pos 19
#define ARM_SPI_SS_MASTER_MODE_Msk (3UL << ARM_SPI_SS_MASTER_MODE_Pos)
#define ARM_SPI_SS_MASTER_UNUSED (0UL << ARM_SPI_SS_MASTER_MODE_Pos) ///< SPI Slave Select when Master: Not used (default)
#define ARM_SPI_SS_MASTER_SW (1UL << ARM_SPI_SS_MASTER_MODE_Pos) ///< SPI Slave Select when Master: Software controlled
#define ARM_SPI_SS_MASTER_HW_OUTPUT (2UL << ARM_SPI_SS_MASTER_MODE_Pos) ///< SPI Slave Select when Master: Hardware controlled Output
#define ARM_SPI_SS_MASTER_HW_INPUT (3UL << ARM_SPI_SS_MASTER_MODE_Pos) ///< SPI Slave Select when Master: Hardware monitored Input
#define ARM_SPI_SS_SLAVE_MODE_Pos 21
#define ARM_SPI_SS_SLAVE_MODE_Msk (1UL << ARM_SPI_SS_SLAVE_MODE_Pos)
#define ARM_SPI_SS_SLAVE_HW (0UL << ARM_SPI_SS_SLAVE_MODE_Pos) ///< SPI Slave Select when Slave: Hardware monitored (default)
#define ARM_SPI_SS_SLAVE_SW (1UL << ARM_SPI_SS_SLAVE_MODE_Pos) ///< SPI Slave Select when Slave: Software controlled
/*----- SPI Control Codes: Miscellaneous Controls -----*/
#define ARM_SPI_SET_BUS_SPEED (0x10UL << ARM_SPI_CONTROL_Pos) ///< Set Bus Speed in bps; arg = value
#define ARM_SPI_GET_BUS_SPEED (0x11UL << ARM_SPI_CONTROL_Pos) ///< Get Bus Speed in bps
#define ARM_SPI_SET_DEFAULT_TX_VALUE (0x12UL << ARM_SPI_CONTROL_Pos) ///< Set default Transmit value; arg = value
#define ARM_SPI_CONTROL_SS (0x13UL << ARM_SPI_CONTROL_Pos) ///< Control Slave Select; arg: 0=inactive, 1=active
#define ARM_SPI_ABORT_TRANSFER (0x14UL << ARM_SPI_CONTROL_Pos) ///< Abort current data transfer
/****** SPI Slave Select Signal definitions *****/
#define ARM_SPI_SS_INACTIVE 0 ///< SPI Slave Select Signal Inactive
#define ARM_SPI_SS_ACTIVE 1 ///< SPI Slave Select Signal Active
/****** SPI specific error codes *****/
#define ARM_SPI_ERROR_MODE (ARM_DRIVER_ERROR_SPECIFIC - 1) ///< Specified Mode not supported
#define ARM_SPI_ERROR_FRAME_FORMAT (ARM_DRIVER_ERROR_SPECIFIC - 2) ///< Specified Frame Format not supported
#define ARM_SPI_ERROR_DATA_BITS (ARM_DRIVER_ERROR_SPECIFIC - 3) ///< Specified number of Data bits not supported
#define ARM_SPI_ERROR_BIT_ORDER (ARM_DRIVER_ERROR_SPECIFIC - 4) ///< Specified Bit order not supported
#define ARM_SPI_ERROR_SS_MODE (ARM_DRIVER_ERROR_SPECIFIC - 5) ///< Specified Slave Select Mode not supported
/**
\brief SPI Status
*/
typedef struct _ARM_SPI_STATUS {
uint32_t busy : 1; ///< Transmitter/Receiver busy flag
uint32_t data_lost : 1; ///< Data lost: Receive overflow / Transmit underflow (cleared on start of transfer operation)
uint32_t mode_fault : 1; ///< Mode fault detected; optional (cleared on start of transfer operation)
} ARM_SPI_STATUS;
/****** SPI Event *****/
#define ARM_SPI_EVENT_TRANSFER_COMPLETE (1UL << 0) ///< Data Transfer completed
#define ARM_SPI_EVENT_DATA_LOST (1UL << 1) ///< Data lost: Receive overflow / Transmit underflow
#define ARM_SPI_EVENT_MODE_FAULT (1UL << 2) ///< Master Mode Fault (SS deactivated when Master)
// Function documentation
/**
\fn ARM_DRIVER_VERSION ARM_SPI_GetVersion (void)
\brief Get driver version.
\return \ref ARM_DRIVER_VERSION
\fn ARM_SPI_CAPABILITIES ARM_SPI_GetCapabilities (void)
\brief Get driver capabilities.
\return \ref ARM_SPI_CAPABILITIES
\fn int32_t ARM_SPI_Initialize (ARM_SPI_SignalEvent_t cb_event)
\brief Initialize SPI Interface.
\param[in] cb_event Pointer to \ref ARM_SPI_SignalEvent
\return \ref execution_status
\fn int32_t ARM_SPI_Uninitialize (void)
\brief De-initialize SPI Interface.
\return \ref execution_status
\fn int32_t ARM_SPI_PowerControl (ARM_POWER_STATE state)
\brief Control SPI Interface Power.
\param[in] state Power state
\return \ref execution_status
\fn int32_t ARM_SPI_Send (const void *data, uint32_t num)
\brief Start sending data to SPI transmitter.
\param[in] data Pointer to buffer with data to send to SPI transmitter
\param[in] num Number of data items to send
\return \ref execution_status
\fn int32_t ARM_SPI_Receive (void *data, uint32_t num)
\brief Start receiving data from SPI receiver.
\param[out] data Pointer to buffer for data to receive from SPI receiver
\param[in] num Number of data items to receive
\return \ref execution_status
\fn int32_t ARM_SPI_Transfer (const void *data_out,
void *data_in,
uint32_t num)
\brief Start sending/receiving data to/from SPI transmitter/receiver.
\param[in] data_out Pointer to buffer with data to send to SPI transmitter
\param[out] data_in Pointer to buffer for data to receive from SPI receiver
\param[in] num Number of data items to transfer
\return \ref execution_status
\fn uint32_t ARM_SPI_GetDataCount (void)
\brief Get transferred data count.
\return number of data items transferred
\fn int32_t ARM_SPI_Control (uint32_t control, uint32_t arg)
\brief Control SPI Interface.
\param[in] control Operation
\param[in] arg Argument of operation (optional)
\return common \ref execution_status and driver specific \ref spi_execution_status
\fn ARM_SPI_STATUS ARM_SPI_GetStatus (void)
\brief Get SPI status.
\return SPI status \ref ARM_SPI_STATUS
\fn void ARM_SPI_SignalEvent (uint32_t event)
\brief Signal SPI Events.
\param[in] event \ref SPI_events notification mask
\return none
*/
typedef void (*ARM_SPI_SignalEvent_t) (uint32_t event); ///< Pointer to \ref ARM_SPI_SignalEvent : Signal SPI Event.
/**
\brief SPI Driver Capabilities.
*/
typedef struct _ARM_SPI_CAPABILITIES {
uint32_t simplex : 1; ///< supports Simplex Mode (Master and Slave)
uint32_t ti_ssi : 1; ///< supports TI Synchronous Serial Interface
uint32_t microwire : 1; ///< supports Microwire Interface
uint32_t event_mode_fault : 1; ///< Signal Mode Fault event: \ref ARM_SPI_EVENT_MODE_FAULT
} ARM_SPI_CAPABILITIES;
/**
\brief Access structure of the SPI Driver.
*/
typedef struct _ARM_DRIVER_SPI {
ARM_DRIVER_VERSION (*GetVersion) (void); ///< Pointer to \ref ARM_SPI_GetVersion : Get driver version.
ARM_SPI_CAPABILITIES (*GetCapabilities) (void); ///< Pointer to \ref ARM_SPI_GetCapabilities : Get driver capabilities.
int32_t (*Initialize) (ARM_SPI_SignalEvent_t cb_event); ///< Pointer to \ref ARM_SPI_Initialize : Initialize SPI Interface.
int32_t (*Uninitialize) (void); ///< Pointer to \ref ARM_SPI_Uninitialize : De-initialize SPI Interface.
int32_t (*PowerControl) (ARM_POWER_STATE state); ///< Pointer to \ref ARM_SPI_PowerControl : Control SPI Interface Power.
int32_t (*Send) (const void *data, uint32_t num); ///< Pointer to \ref ARM_SPI_Send : Start sending data to SPI Interface.
int32_t (*Receive) ( void *data, uint32_t num); ///< Pointer to \ref ARM_SPI_Receive : Start receiving data from SPI Interface.
int32_t (*Transfer) (const void *data_out,
void *data_in,
uint32_t num); ///< Pointer to \ref ARM_SPI_Transfer : Start sending/receiving data to/from SPI.
uint32_t (*GetDataCount) (void); ///< Pointer to \ref ARM_SPI_GetDataCount : Get transferred data count.
int32_t (*Control) (uint32_t control, uint32_t arg); ///< Pointer to \ref ARM_SPI_Control : Control SPI Interface.
ARM_SPI_STATUS (*GetStatus) (void); ///< Pointer to \ref ARM_SPI_GetStatus : Get SPI status.
} const ARM_DRIVER_SPI;
#endif /* __DRIVER_SPI_H */
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