2 * Copyright (c) 2013-2020 ARM Limited. All rights reserved.
4 * SPDX-License-Identifier: Apache-2.0
6 * Licensed under the Apache License, Version 2.0 (the License); you may
7 * not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
14 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * $Date: 24. January 2020
21 * Project: SPI (Serial Peripheral Interface) Driver definitions
26 * Removed volatile from ARM_SPI_STATUS
28 * ARM_SPI_STATUS made volatile
30 * Renamed status flag "tx_rx_busy" to "busy"
32 * New simplified driver:
33 * complexity moved to upper layer (especially data handling)
34 * more unified API for different communication interfaces
38 * Configurable number of data bits
39 * Support for TI Mode and Microwire
40 * Changed prefix ARM_DRV -> ARM_DRIVER
42 * Namespace prefix ARM_ added
44 * Added "send_done_event" to Capabilities
57 #include "Driver_Common.h"
59 #define ARM_SPI_API_VERSION ARM_DRIVER_VERSION_MAJOR_MINOR(2,3) /* API version */
62 /****** SPI Control Codes *****/
64 #define ARM_SPI_CONTROL_Pos 0
65 #define ARM_SPI_CONTROL_Msk (0xFFUL << ARM_SPI_CONTROL_Pos)
67 /*----- SPI Control Codes: Mode -----*/
68 #define ARM_SPI_MODE_INACTIVE (0x00UL << ARM_SPI_CONTROL_Pos) ///< SPI Inactive
69 #define ARM_SPI_MODE_MASTER (0x01UL << ARM_SPI_CONTROL_Pos) ///< SPI Master (Output on MOSI, Input on MISO); arg = Bus Speed in bps
70 #define ARM_SPI_MODE_SLAVE (0x02UL << ARM_SPI_CONTROL_Pos) ///< SPI Slave (Output on MISO, Input on MOSI)
71 #define ARM_SPI_MODE_MASTER_SIMPLEX (0x03UL << ARM_SPI_CONTROL_Pos) ///< SPI Master (Output/Input on MOSI); arg = Bus Speed in bps
72 #define ARM_SPI_MODE_SLAVE_SIMPLEX (0x04UL << ARM_SPI_CONTROL_Pos) ///< SPI Slave (Output/Input on MISO)
74 /*----- SPI Control Codes: Mode Parameters: Frame Format -----*/
75 #define ARM_SPI_FRAME_FORMAT_Pos 8
76 #define ARM_SPI_FRAME_FORMAT_Msk (7UL << ARM_SPI_FRAME_FORMAT_Pos)
77 #define ARM_SPI_CPOL0_CPHA0 (0UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Clock Polarity 0, Clock Phase 0 (default)
78 #define ARM_SPI_CPOL0_CPHA1 (1UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Clock Polarity 0, Clock Phase 1
79 #define ARM_SPI_CPOL1_CPHA0 (2UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Clock Polarity 1, Clock Phase 0
80 #define ARM_SPI_CPOL1_CPHA1 (3UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Clock Polarity 1, Clock Phase 1
81 #define ARM_SPI_TI_SSI (4UL << ARM_SPI_FRAME_FORMAT_Pos) ///< Texas Instruments Frame Format
82 #define ARM_SPI_MICROWIRE (5UL << ARM_SPI_FRAME_FORMAT_Pos) ///< National Microwire Frame Format
84 /*----- SPI Control Codes: Mode Parameters: Data Bits -----*/
85 #define ARM_SPI_DATA_BITS_Pos 12
86 #define ARM_SPI_DATA_BITS_Msk (0x3FUL << ARM_SPI_DATA_BITS_Pos)
87 #define ARM_SPI_DATA_BITS(n) (((n) & 0x3FUL) << ARM_SPI_DATA_BITS_Pos) ///< Number of Data bits
89 /*----- SPI Control Codes: Mode Parameters: Bit Order -----*/
90 #define ARM_SPI_BIT_ORDER_Pos 18
91 #define ARM_SPI_BIT_ORDER_Msk (1UL << ARM_SPI_BIT_ORDER_Pos)
92 #define ARM_SPI_MSB_LSB (0UL << ARM_SPI_BIT_ORDER_Pos) ///< SPI Bit order from MSB to LSB (default)
93 #define ARM_SPI_LSB_MSB (1UL << ARM_SPI_BIT_ORDER_Pos) ///< SPI Bit order from LSB to MSB
95 /*----- SPI Control Codes: Mode Parameters: Slave Select Mode -----*/
96 #define ARM_SPI_SS_MASTER_MODE_Pos 19
97 #define ARM_SPI_SS_MASTER_MODE_Msk (3UL << ARM_SPI_SS_MASTER_MODE_Pos)
98 #define ARM_SPI_SS_MASTER_UNUSED (0UL << ARM_SPI_SS_MASTER_MODE_Pos) ///< SPI Slave Select when Master: Not used (default)
99 #define ARM_SPI_SS_MASTER_SW (1UL << ARM_SPI_SS_MASTER_MODE_Pos) ///< SPI Slave Select when Master: Software controlled
100 #define ARM_SPI_SS_MASTER_HW_OUTPUT (2UL << ARM_SPI_SS_MASTER_MODE_Pos) ///< SPI Slave Select when Master: Hardware controlled Output
101 #define ARM_SPI_SS_MASTER_HW_INPUT (3UL << ARM_SPI_SS_MASTER_MODE_Pos) ///< SPI Slave Select when Master: Hardware monitored Input
102 #define ARM_SPI_SS_SLAVE_MODE_Pos 21
103 #define ARM_SPI_SS_SLAVE_MODE_Msk (1UL << ARM_SPI_SS_SLAVE_MODE_Pos)
104 #define ARM_SPI_SS_SLAVE_HW (0UL << ARM_SPI_SS_SLAVE_MODE_Pos) ///< SPI Slave Select when Slave: Hardware monitored (default)
105 #define ARM_SPI_SS_SLAVE_SW (1UL << ARM_SPI_SS_SLAVE_MODE_Pos) ///< SPI Slave Select when Slave: Software controlled
108 /*----- SPI Control Codes: Miscellaneous Controls -----*/
109 #define ARM_SPI_SET_BUS_SPEED (0x10UL << ARM_SPI_CONTROL_Pos) ///< Set Bus Speed in bps; arg = value
110 #define ARM_SPI_GET_BUS_SPEED (0x11UL << ARM_SPI_CONTROL_Pos) ///< Get Bus Speed in bps
111 #define ARM_SPI_SET_DEFAULT_TX_VALUE (0x12UL << ARM_SPI_CONTROL_Pos) ///< Set default Transmit value; arg = value
112 #define ARM_SPI_CONTROL_SS (0x13UL << ARM_SPI_CONTROL_Pos) ///< Control Slave Select; arg: 0=inactive, 1=active
113 #define ARM_SPI_ABORT_TRANSFER (0x14UL << ARM_SPI_CONTROL_Pos) ///< Abort current data transfer
116 /****** SPI Slave Select Signal definitions *****/
117 #define ARM_SPI_SS_INACTIVE 0UL ///< SPI Slave Select Signal Inactive
118 #define ARM_SPI_SS_ACTIVE 1UL ///< SPI Slave Select Signal Active
121 /****** SPI specific error codes *****/
122 #define ARM_SPI_ERROR_MODE (ARM_DRIVER_ERROR_SPECIFIC - 1) ///< Specified Mode not supported
123 #define ARM_SPI_ERROR_FRAME_FORMAT (ARM_DRIVER_ERROR_SPECIFIC - 2) ///< Specified Frame Format not supported
124 #define ARM_SPI_ERROR_DATA_BITS (ARM_DRIVER_ERROR_SPECIFIC - 3) ///< Specified number of Data bits not supported
125 #define ARM_SPI_ERROR_BIT_ORDER (ARM_DRIVER_ERROR_SPECIFIC - 4) ///< Specified Bit order not supported
126 #define ARM_SPI_ERROR_SS_MODE (ARM_DRIVER_ERROR_SPECIFIC - 5) ///< Specified Slave Select Mode not supported
132 typedef struct _ARM_SPI_STATUS {
133 uint32_t busy : 1; ///< Transmitter/Receiver busy flag
134 uint32_t data_lost : 1; ///< Data lost: Receive overflow / Transmit underflow (cleared on start of transfer operation)
135 uint32_t mode_fault : 1; ///< Mode fault detected; optional (cleared on start of transfer operation)
136 uint32_t reserved : 29;
140 /****** SPI Event *****/
141 #define ARM_SPI_EVENT_TRANSFER_COMPLETE (1UL << 0) ///< Data Transfer completed
142 #define ARM_SPI_EVENT_DATA_LOST (1UL << 1) ///< Data lost: Receive overflow / Transmit underflow
143 #define ARM_SPI_EVENT_MODE_FAULT (1UL << 2) ///< Master Mode Fault (SS deactivated when Master)
146 // Function documentation
148 \fn ARM_DRIVER_VERSION ARM_SPI_GetVersion (void)
149 \brief Get driver version.
150 \return \ref ARM_DRIVER_VERSION
152 \fn ARM_SPI_CAPABILITIES ARM_SPI_GetCapabilities (void)
153 \brief Get driver capabilities.
154 \return \ref ARM_SPI_CAPABILITIES
156 \fn int32_t ARM_SPI_Initialize (ARM_SPI_SignalEvent_t cb_event)
157 \brief Initialize SPI Interface.
158 \param[in] cb_event Pointer to \ref ARM_SPI_SignalEvent
159 \return \ref execution_status
161 \fn int32_t ARM_SPI_Uninitialize (void)
162 \brief De-initialize SPI Interface.
163 \return \ref execution_status
165 \fn int32_t ARM_SPI_PowerControl (ARM_POWER_STATE state)
166 \brief Control SPI Interface Power.
167 \param[in] state Power state
168 \return \ref execution_status
170 \fn int32_t ARM_SPI_Send (const void *data, uint32_t num)
171 \brief Start sending data to SPI transmitter.
172 \param[in] data Pointer to buffer with data to send to SPI transmitter
173 \param[in] num Number of data items to send
174 \return \ref execution_status
176 \fn int32_t ARM_SPI_Receive (void *data, uint32_t num)
177 \brief Start receiving data from SPI receiver.
178 \param[out] data Pointer to buffer for data to receive from SPI receiver
179 \param[in] num Number of data items to receive
180 \return \ref execution_status
182 \fn int32_t ARM_SPI_Transfer (const void *data_out,
185 \brief Start sending/receiving data to/from SPI transmitter/receiver.
186 \param[in] data_out Pointer to buffer with data to send to SPI transmitter
187 \param[out] data_in Pointer to buffer for data to receive from SPI receiver
188 \param[in] num Number of data items to transfer
189 \return \ref execution_status
191 \fn uint32_t ARM_SPI_GetDataCount (void)
192 \brief Get transferred data count.
193 \return number of data items transferred
195 \fn int32_t ARM_SPI_Control (uint32_t control, uint32_t arg)
196 \brief Control SPI Interface.
197 \param[in] control Operation
198 \param[in] arg Argument of operation (optional)
199 \return common \ref execution_status and driver specific \ref spi_execution_status
201 \fn ARM_SPI_STATUS ARM_SPI_GetStatus (void)
202 \brief Get SPI status.
203 \return SPI status \ref ARM_SPI_STATUS
205 \fn void ARM_SPI_SignalEvent (uint32_t event)
206 \brief Signal SPI Events.
207 \param[in] event \ref SPI_events notification mask
211 typedef void (*ARM_SPI_SignalEvent_t) (uint32_t event); ///< Pointer to \ref ARM_SPI_SignalEvent : Signal SPI Event.
215 \brief SPI Driver Capabilities.
217 typedef struct _ARM_SPI_CAPABILITIES {
218 uint32_t simplex : 1; ///< supports Simplex Mode (Master and Slave)
219 uint32_t ti_ssi : 1; ///< supports TI Synchronous Serial Interface
220 uint32_t microwire : 1; ///< supports Microwire Interface
221 uint32_t event_mode_fault : 1; ///< Signal Mode Fault event: \ref ARM_SPI_EVENT_MODE_FAULT
222 uint32_t reserved : 28; ///< Reserved (must be zero)
223 } ARM_SPI_CAPABILITIES;
227 \brief Access structure of the SPI Driver.
229 typedef struct _ARM_DRIVER_SPI {
230 ARM_DRIVER_VERSION (*GetVersion) (void); ///< Pointer to \ref ARM_SPI_GetVersion : Get driver version.
231 ARM_SPI_CAPABILITIES (*GetCapabilities) (void); ///< Pointer to \ref ARM_SPI_GetCapabilities : Get driver capabilities.
232 int32_t (*Initialize) (ARM_SPI_SignalEvent_t cb_event); ///< Pointer to \ref ARM_SPI_Initialize : Initialize SPI Interface.
233 int32_t (*Uninitialize) (void); ///< Pointer to \ref ARM_SPI_Uninitialize : De-initialize SPI Interface.
234 int32_t (*PowerControl) (ARM_POWER_STATE state); ///< Pointer to \ref ARM_SPI_PowerControl : Control SPI Interface Power.
235 int32_t (*Send) (const void *data, uint32_t num); ///< Pointer to \ref ARM_SPI_Send : Start sending data to SPI Interface.
236 int32_t (*Receive) ( void *data, uint32_t num); ///< Pointer to \ref ARM_SPI_Receive : Start receiving data from SPI Interface.
237 int32_t (*Transfer) (const void *data_out,
239 uint32_t num); ///< Pointer to \ref ARM_SPI_Transfer : Start sending/receiving data to/from SPI.
240 uint32_t (*GetDataCount) (void); ///< Pointer to \ref ARM_SPI_GetDataCount : Get transferred data count.
241 int32_t (*Control) (uint32_t control, uint32_t arg); ///< Pointer to \ref ARM_SPI_Control : Control SPI Interface.
242 ARM_SPI_STATUS (*GetStatus) (void); ///< Pointer to \ref ARM_SPI_GetStatus : Get SPI status.
243 } const ARM_DRIVER_SPI;
249 #endif /* DRIVER_SPI_H_ */