/* ------------------------------------------ | |
* Copyright (c) 2017, Synopsys, Inc. All rights reserved. | |
* Redistribution and use in source and binary forms, with or without modification, | |
* are permitted provided that the following conditions are met: | |
* 1) Redistributions of source code must retain the above copyright notice, this | |
* list of conditions and the following disclaimer. | |
* 2) Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation and/or | |
* other materials provided with the distribution. | |
* 3) Neither the name of the Synopsys, Inc., nor the names of its contributors may | |
* be used to endorse or promote products derived from this software without | |
* specific prior written permission. | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR | |
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* | |
* \version 2017.03 | |
* \date 2014-06-16 | |
* \author Huaqi Fang(Huaqi.Fang@synopsys.com) | |
--------------------------------------------- */ | |
/** | |
* \defgroup DEVICE_HAL_SPI SPI Device HAL Interface | |
* \ingroup DEVICE_HAL_DEF | |
* \brief definitions for spi device hardware layer (\ref dev_spi.h) | |
* \details provide interfaces for spi driver to implement | |
* Here is a diagram for the spi interface. | |
* | |
* \htmlonly | |
* <div class="imagebox"> | |
* <div style="width: 600px"> | |
* <img src="pic/dev_spi_hal.jpg" alt="SPI Device HAL Interface Diagram"/> | |
* <p>SPI Device HAL Interface Diagram</p> | |
* </div> | |
* </div> | |
* \endhtmlonly | |
* | |
* @{ | |
* | |
* \file | |
* \brief spi device hardware layer definitions | |
* \details provide common definitions for spi device, | |
* then software developer can develop spi driver | |
* following this definitions, and the applications | |
* can directly call this definition to realize functions | |
*/ | |
#ifndef _DEVICE_HAL_SPI_H_ | |
#define _DEVICE_HAL_SPI_H_ | |
#include "device/device_hal/inc/dev_common.h" | |
/** | |
* \defgroup DEVICE_HAL_SPI_CTRLCMD SPI Device Control Commands | |
* \ingroup DEVICE_HAL_SPI | |
* \brief Definitions for spi control command, used in \ref dev_spi::spi_control "SPI IO Control" | |
* \details These commands defined here can be used in user code directly. | |
* - Parameters Usage | |
* - For passing parameters like integer, just use uint32_t/int32_t to directly pass values | |
* - For passing parameters for a structure, please use pointer to pass values | |
* - For getting some data, please use pointer to store the return data | |
* - Common Return Values | |
* - \ref E_OK, Control device successfully | |
* - \ref E_CLSED, Device is not opened | |
* - \ref E_OBJ, Device object is not valid or not exists | |
* - \ref E_PAR, Parameter is not valid for current control command | |
* - \ref E_SYS, Control device failed, due to hardware issues such as device is disabled | |
* - \ref E_CTX, Control device failed, due to different reasons like in transfer state | |
* - \ref E_NOSPT, Control command is not supported or not valid | |
* - Usage Comment | |
* - For SPI poll or interrupt read/write/transfer operations, only 1 operation can be triggered. | |
* If there is a operation is running, any other operation will return \ref E_CTX | |
* - If SPI is in transfer, then the following operations may return \ref E_CTX. Like | |
* \ref SPI_CMD_SET_CLK_MODE, \ref SPI_CMD_SET_TXINT_BUF, \ref SPI_CMD_SET_RXINT_BUF, | |
* \ref SPI_CMD_SET_TXINT, \ref SPI_CMD_SET_RXINT, \ref SPI_CMD_ABORT_TX, \ref SPI_CMD_ABORT_RX, | |
* \ref SPI_CMD_FLUSH_TX, \ref SPI_CMD_FLUSH_RX, \ref SPI_CMD_SET_DFS, \ref SPI_CMD_TRANSFER_POLLING, | |
* \ref SPI_CMD_TRANSFER_INT, \ref SPI_CMD_ABORT_XFER, \ref SPI_CMD_MST_SEL_DEV, \ref SPI_CMD_MST_DSEL_DEV, | |
* \ref SPI_CMD_MST_SET_FREQ and \ref dev_spi::spi_write "SPI Poll Write" or \ref dev_spi::spi_read "SPI Poll Read". | |
* @{ | |
*/ | |
/** Define SPI control commands for common usage */ | |
#define DEV_SET_SPI_SYSCMD(cmd) DEV_SET_SYSCMD((cmd)) | |
/** Define SPI control commands for master usage */ | |
#define DEV_SET_SPI_MST_SYSCMD(cmd) DEV_SET_SYSCMD(0x00001000|(cmd)) | |
/** Define SPI control commands for slave usage */ | |
#define DEV_SET_SPI_SLV_SYSCMD(cmd) DEV_SET_SYSCMD(0x00002000|(cmd)) | |
/* ++++ Common commands for SPI Device ++++ */ | |
/** | |
* Get \ref dev_spi_info::status "current device status" | |
* - Param type : uint32_t * | |
* - Param usage : store result of current status | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_GET_STATUS DEV_SET_SPI_SYSCMD(0) | |
/** | |
* set the \ref dev_spi_info::clk_mode "clock mode" of spi transfer | |
* - Param type : uint32_t | |
* - Param usage : spi clock mode to choose clock phase and clock polarity | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_CLK_MODE DEV_SET_SPI_SYSCMD(1) | |
/** | |
* set spi \ref dev_spi_info::dfs "data frame size" | |
* - Param type : uint32_t | |
* - Param usage : should > 0 | |
* - Return value explanation : If dfs is not supported, then return \ref E_SYS | |
*/ | |
#define SPI_CMD_SET_DFS DEV_SET_SPI_SYSCMD(2) | |
/** | |
* set the \ref dev_spi_info::dummy "dummy data" during spi transfer | |
* - Param type : uint32_t | |
* - Param usage : dummy data to transfer | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_DUMMY_DATA DEV_SET_SPI_SYSCMD(3) | |
/** | |
* Set \ref dev_spi_cbs::tx_cb "spi transmit success callback" function | |
* when all required bytes are transmitted for interrupt method | |
* - Param type : \ref DEV_CALLBACK * or NULL | |
* - Param usage : transmit success callback function for spi | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_TXCB DEV_SET_SPI_SYSCMD(4) | |
/** | |
* Set \ref dev_spi_cbs::rx_cb "spi receive success callback" function | |
* when all required bytes are received for interrupt method | |
* - Param type : \ref DEV_CALLBACK * or NULL | |
* - Param usage : receive success callback function for spi | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_RXCB DEV_SET_SPI_SYSCMD(5) | |
/** | |
* Set \ref dev_spi_cbs::xfer_cb "spi transfer success callback" function | |
* when all required transfer are done for interrupt method | |
* - Param type : \ref DEV_CALLBACK * or NULL | |
* - Param usage : transfer success callback function for spi | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_XFERCB DEV_SET_SPI_SYSCMD(6) | |
/** | |
* Set \ref dev_spi_cbs::err_cb "spi transfer error callback" function | |
* when something error happened for interrupt method | |
* - Param type : \ref DEV_CALLBACK * or NULL | |
* - Param usage : transfer error callback function for spi | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_ERRCB DEV_SET_SPI_SYSCMD(7) | |
/** | |
* Set buffer in interrupt transmit, and it will set \ref dev_spi_info::xfer "spi tranfer". | |
* - SPI master and slave mode use case \n | |
* For both master and slave mode, if you set tx buffer to NULL, when tx interrupt is enabled and entered into tx interrupt, | |
* it will automatically disable the tx interrupt, so when you want to transfer something, you need to set the | |
* tx buffer to Non-NULL and enable tx interrupt, when the tx buffer is sent, it will disable the tx interrupt | |
* and call tx callback function if available. | |
* - Param type : DEV_BUFFER * or NULL | |
* - Param usage : buffer structure pointer, if param is NULL, then it will set xfer to empty | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_TXINT_BUF DEV_SET_SPI_SYSCMD(8) | |
/** | |
* Set buffer in interrupt receive, and it will set \ref dev_spi_info::xfer "spi tranfer". | |
* - SPI master mode use case \n | |
* Similar to \ref SPI_CMD_SET_TXINT_BUF | |
* - SPI slave mode use case \n | |
* Similiar to \ref SPI_CMD_SET_TXINT_BUF | |
* - Param type : DEV_BUFFER * or NULL | |
* - Param usage : buffer structure pointer, if param is NULL, then it will set xfer to empty | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_RXINT_BUF DEV_SET_SPI_SYSCMD(9) | |
/** | |
* Enable or disable transmit interrupt, | |
* for master mode, only one of tx and rx interrupt can be enabled, | |
* if tx interrupt is enabled, then rx interrupt can't be enabled. | |
* - Param type : uint32_t | |
* - Param usage : enable(none-zero) or disable(zero) flag | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_TXINT DEV_SET_SPI_SYSCMD(10) | |
/** | |
* Enable or disable receive interrupt, | |
* for master mode, only one of tx and rx interrupt can be enabled, | |
* if rx interrupt is enabled, then tx interrupt can't be enabled. | |
* - Param type : uint32_t | |
* - Param usage : enable(none-zero) or disable(zero) flag | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_SET_RXINT DEV_SET_SPI_SYSCMD(11) | |
/** | |
* start the transfer by polling | |
* - Param type : \ref DEV_SPI_TRANSFER * | |
* - Param usage : | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_TRANSFER_POLLING DEV_SET_SPI_SYSCMD(12) | |
/** | |
* start the transfer by interrupt | |
* - Param type : \ref DEV_SPI_TRANSFER * or NULL | |
* - Param usage : If NULL, it will disable transfer interrupt, if not NULL, it will enable transfer interrupt | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_TRANSFER_INT DEV_SET_SPI_SYSCMD(13) | |
/** | |
* Abort current interrupt transmit operation if tx interrupt enabled, | |
* it will disable transmit interrupt, and set \ref DEV_IN_TX_ABRT | |
* in \ref dev_spi_info::status "status" variable, | |
* and call the transmit callback function, when tx callback is finished, | |
* it will clear \ref DEV_IN_TX_ABRT and return | |
* - Param type : NULL | |
* - Param usage : | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_ABORT_TX DEV_SET_SPI_SYSCMD(14) | |
/** | |
* Abort current interrupt receive operation if rx interrupt enabled, | |
* it will disable receive interrupt, and set \ref DEV_IN_TX_ABRT | |
* in \ref dev_spi_info::status "status" variable, | |
* and call the receive callback function, when rx callback is finished, | |
* it will clear \ref DEV_IN_TX_ABRT and return | |
* - Param type : NULL | |
* - Param usage : | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_ABORT_RX DEV_SET_SPI_SYSCMD(15) | |
/** | |
* Abort current interrupt transfer operation if transfer is issued, | |
* it will disable transfer interrupt, and set \ref DEV_IN_XFER_ABRT | |
* in \ref dev_spi_info::status "status" variable, | |
* and call the transfer callback function, when xfer callback is finished, | |
* it will clear \ref DEV_IN_XFER_ABRT and return | |
* - Param type : NULL | |
* - Param usage : | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_ABORT_XFER DEV_SET_SPI_SYSCMD(16) | |
/** | |
* Do a software reset for SPI device, it will stop current transfer, | |
* and clear error state and bring device to normal state, set next condition to STOP | |
* - Param type : NULL | |
* - Param usage : | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_RESET DEV_SET_SPI_SYSCMD(17) | |
/** | |
* Flush spi tx fifo, this will clear the data in tx fifo | |
* - Param type : NULL | |
* - Param usage : | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_FLUSH_TX DEV_SET_SPI_SYSCMD(18) | |
/** | |
* Flush spi rx fifo, this will clear the data in rx fifo | |
* - Param type : NULL | |
* - Param usage : | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_FLUSH_RX DEV_SET_SPI_SYSCMD(19) | |
/** | |
* Enable spi device | |
* - Param type : NULL | |
* - Param usage : param is not required | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_ENA_DEV DEV_SET_SPI_SYSCMD(20) | |
/** | |
* Disable spi device, when device is disabled, | |
* only \ref SPI_CMD_ENA_DEV, \ref SPI_CMD_DIS_DEV, | |
* \ref SPI_CMD_GET_STATUS and \ref SPI_CMD_RESET | |
* commands can be executed, other commands will return \ref E_SYS | |
* - Param type : NULL | |
* - Param usage : param is not required | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_DIS_DEV DEV_SET_SPI_SYSCMD(21) | |
/** | |
* Get how many bytes space in spi are available to transmit, | |
* this can be used in interrupt callback functions, | |
* cooperate with \ref dev_spi::spi_write "spi_write" API to realize non-blocked write | |
* - Param type : int32_t * | |
* - Param usage : store the write available bytes, > 0 for available bytes, 0 for not available | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_GET_TXAVAIL DEV_SET_SPI_SYSCMD(22) | |
/** | |
* Get how many bytes in spi are available to receive, | |
* this can be used in interrupt callback functions, | |
* cooperate with \ref dev_spi::spi_read "spi_read" API to realize non-blocked read | |
* - Param type : int32_t * | |
* - Param usage : store the read available bytes, > 0 for available bytes, 0 for not available | |
* - Return value explanation : | |
*/ | |
#define SPI_CMD_GET_RXAVAIL DEV_SET_SPI_SYSCMD(23) | |
/* ++++ Master only commands for SPI Device ++++ */ | |
/** | |
* select spi slave device | |
* - Param type : uint32_t | |
* - Param usage : the number of spi slave device to select | |
* - Return value explanation : return \ref E_SYS when selection can't be done, return \ref E_CTX during transfer | |
*/ | |
#define SPI_CMD_MST_SEL_DEV DEV_SET_SPI_MST_SYSCMD(0) | |
/** | |
* de-select spi slave device | |
* - Param type : uint32_t | |
* - Param usage : the number of spi slave device to de-select | |
* - Return value explanation : return \ref E_SYS when selection can't be done, return \ref E_CTX during transfer | |
*/ | |
#define SPI_CMD_MST_DSEL_DEV DEV_SET_SPI_MST_SYSCMD(1) | |
/** | |
* Set \ref dev_spi_info::freq "spi frequency". | |
* - Param type : uint32_t | |
* - Param usage : spi freq | |
* - Return value explanation : no return | |
*/ | |
#define SPI_CMD_MST_SET_FREQ DEV_SET_SPI_MST_SYSCMD(2) | |
/* ++++ Slave only commands for SPI Device ++++ */ | |
/* \todo add spi slave related CMDs */ | |
/** @} */ | |
/** | |
* \defgroup DEVICE_HAL_SPI_CALLBACK SPI Interrupt callback functions | |
* \ingroup DEVICE_HAL_SPI | |
* \brief callback function structure for SPI device | |
* @{ | |
*/ | |
typedef struct dev_spi_cbs | |
{ | |
DEV_CALLBACK tx_cb; /*!< spi data transmit success required bytes callback */ | |
DEV_CALLBACK rx_cb; /*!< spi data receive success required bytes callback */ | |
DEV_CALLBACK err_cb; /*!< spi error callback */ | |
DEV_CALLBACK xfer_cb; /*!< transfer callback */ | |
} DEV_SPI_CBS, *DEV_SPI_CBS_PTR; | |
/** @} */ | |
/** SPI Clock Mode */ | |
typedef enum spi_clk_mode | |
{ | |
SPI_CPOL_0_CPHA_0 = 0, /*!< Inactive state of serial clock is low, serial clock toggles in middle of first data bit */ | |
SPI_CPOL_0_CPHA_1 = 1, /*!< Inactive state of serial clock is low, serial clock toggles at start of first data bit */ | |
SPI_CPOL_1_CPHA_0 = 2, /*!< Inactive state of serial clock is high, serial clock toggles in middle of first data bit */ | |
SPI_CPOL_1_CPHA_1 = 3, /*!< Inactive state of serial clock is high, serial clock toggles at start of first data bit */ | |
SPI_CLK_MODE_0 = SPI_CPOL_0_CPHA_0, /*!< Equal to \ref SPI_CPOL_0_CPHA_0 */ | |
SPI_CLK_MODE_1 = SPI_CPOL_0_CPHA_1, /*!< Equal to \ref SPI_CPOL_0_CPHA_1 */ | |
SPI_CLK_MODE_2 = SPI_CPOL_1_CPHA_0, /*!< Equal to \ref SPI_CPOL_1_CPHA_0 */ | |
SPI_CLK_MODE_3 = SPI_CPOL_1_CPHA_1 /*!< Equal to \ref SPI_CPOL_1_CPHA_1 */ | |
} SPI_CLK_MODE; | |
#define SPI_CLK_MODE_DEFAULT SPI_CPOL_0_CPHA_0 /*!< Default SPI device clock mode */ | |
/** | |
* \defgroup DEVICE_HAL_SPI_DEVSTRUCT SPI Device Structure | |
* \ingroup DEVICE_HAL_SPI | |
* \brief contains definitions of spi device structure. | |
* \details this structure will be used in user implemented code, which was called | |
* Device Driver Implement Layer for spi to realize in user code. | |
* @{ | |
*/ | |
typedef struct dev_spi_transfer DEV_SPI_TRANSFER, *DEV_SPI_TRANSFER_PTR; | |
/** | |
* \brief spi read and write data structure used by \ref SPI_CMD_TRANSFER | |
* spi write then read data | |
* | |
*/ | |
struct dev_spi_transfer | |
{ | |
DEV_SPI_TRANSFER *next; | |
/* Calc by software */ | |
/** tot_len = (tx_totlen>rx_totlen)?tx_totlen:rx_totlen */ | |
uint32_t tot_len; | |
/* Set by user */ | |
uint8_t *tx_buf; | |
uint32_t tx_ofs; | |
uint32_t tx_len; | |
uint8_t *rx_buf; | |
uint32_t rx_ofs; | |
uint32_t rx_len; | |
/* Should auto set to proper value during set buffer value */ | |
uint32_t tx_idx; | |
uint32_t tx_totlen; /** tx_totlen = tx_len + tx_ofs */ | |
uint32_t rx_idx; | |
uint32_t rx_totlen; /** rx_totlen = rx_len + rx_ofs */ | |
}; | |
/** Set tx buffer of device spi transfer */ | |
#define DEV_SPI_XFER_SET_TXBUF(xfer, buf, ofs, len) { \ | |
(xfer)->tx_buf = (uint8_t *)(buf); \ | |
(xfer)->tx_len = (uint32_t)(len); \ | |
(xfer)->tx_ofs = (uint32_t)(ofs); \ | |
(xfer)->tx_idx = 0; \ | |
(xfer)->tx_totlen = ( (uint32_t)(len) \ | |
+ (uint32_t)(ofs) ) ; \ | |
} | |
/** Set rx buffer of device spi transfer */ | |
#define DEV_SPI_XFER_SET_RXBUF(xfer, buf, ofs, len) { \ | |
(xfer)->rx_buf = (uint8_t *)(buf); \ | |
(xfer)->rx_len = (uint32_t)(len); \ | |
(xfer)->rx_ofs = (uint32_t)(ofs); \ | |
(xfer)->rx_idx = 0; \ | |
(xfer)->rx_totlen = ( (uint32_t)(len) \ | |
+ (uint32_t)(ofs) ) ; \ | |
} | |
/** Calculate total length of current transfer without next transfer */ | |
#define DEV_SPI_XFER_CALC_TOTLEN(xfer) (xfer)->tot_len = \ | |
((xfer)->tx_totlen > (xfer)->rx_totlen) ? (xfer)->tx_totlen : (xfer)->rx_totlen ; | |
/** Set next SPI transfer */ | |
#define DEV_SPI_XFER_SET_NEXT(xfer, next_xfer) (xfer)->next = (next_xfer); | |
/** Init spi transfer */ | |
#define DEV_SPI_XFER_INIT(xfer) { \ | |
(xfer)->tx_idx = 0; \ | |
(xfer)->rx_idx = 0; \ | |
(xfer)->tx_totlen = ((xfer)->tx_len \ | |
+ (xfer)->tx_ofs) ; \ | |
(xfer)->rx_totlen = ((xfer)->rx_len \ | |
+ (xfer)->rx_ofs) ; \ | |
DEV_SPI_XFER_CALC_TOTLEN(xfer); \ | |
} | |
/** | |
* \brief spi information struct definition | |
* \details informations about spi open state, working state, | |
* frequency, spi registers, working method, interrupt number | |
*/ | |
typedef struct dev_spi_info | |
{ | |
void *spi_ctrl; /*!< spi control related */ | |
uint32_t status; /*!< current working status, refer to \ref DEVICE_HAL_COMMON_DEVSTATUS, this should be \ref DEV_ENABLED for first open */ | |
uint32_t freq; /*!< spi working baudrate */ | |
uint8_t mode; /*!< spi working mode (master/slave) */ | |
uint8_t clk_mode; /*!< spi clock phase and polarity, this should be \ref SPI_CLK_MODE_DEFAULT for first open */ | |
uint8_t opn_cnt; /*!< spi open count, open it will increase 1, close it will decrease 1, 0 for close, >0 for open */ | |
uint8_t slave; /*!< current selected slave device no, start from 0, this should be \ref SPI_SLAVE_NOT_SELECTED for first open */ | |
uint8_t dfs; /*!< data frame size, this should be \ref SPI_DFS_DEFAULT for first open */ | |
DEV_SPI_TRANSFER xfer; /*!< spi transfer, this should be set to all zero for first open */ | |
DEV_SPI_CBS spi_cbs; /*!< spi callbacks, for both master and slave mode, this should be all NULL for first open */ | |
void *extra; /*!< a extra pointer to get hook to applications which should not used by bsp developer, | |
this should be NULL for first open and you can \ref DEV_SPI_INFO_SET_EXTRA_OBJECT "set" | |
or \ref DEV_SPI_INFO_GET_EXTRA_OBJECT "get" the extra information pointer */ | |
uint32_t dummy; /*!< dummy write data when send and receive, this should be \ref SPI_DUMMY_DEFAULT for first open */ | |
} DEV_SPI_INFO, * DEV_SPI_INFO_PTR; | |
/** Set extra information pointer of spi info */ | |
#define DEV_SPI_INFO_SET_EXTRA_OBJECT(spi_info_ptr, extra_info) (spi_info_ptr)->extra = (void *)(extra_info) | |
/** Get extra information pointer of spi info */ | |
#define DEV_SPI_INFO_GET_EXTRA_OBJECT(spi_info_ptr) ((spi_info_ptr)->extra) | |
#define SPI_DFS_DEFAULT 8 /*!< Default spi data frame size */ | |
#define SPI_SLAVE_NOT_SELECTED (0xFF) /*!< Slave is not selected */ | |
#define SPI_DUMMY_DEFAULT (0xFF) /*!< default dummy value for first open */ | |
/** | |
* \brief spi device interface definition | |
* \details define spi device interface, like spi information structure, | |
* fuctions to get spi info, open/close/control spi, send/receive data by spi | |
* \note all this details are implemented by user in user porting code | |
*/ | |
typedef struct dev_spi | |
{ | |
DEV_SPI_INFO spi_info; /*!< spi device information */ | |
int32_t (*spi_open)(uint32_t mode, uint32_t param); /*!< open spi device in master/slave mode, \ | |
when in master mode, param stands for frequency, \ | |
when in slave mode, param stands for clock mode */ | |
int32_t (*spi_close)(void); /*!< close spi device */ | |
int32_t (*spi_control)(uint32_t ctrl_cmd, void *param); /*!< control spi device */ | |
int32_t (*spi_write)(const void *data, uint32_t len); /*!< send data to spi device (blocking method) */ | |
int32_t (*spi_read)(void *data, uint32_t len); /*!< read data from spi device (blocking method) */ | |
} DEV_SPI, * DEV_SPI_PTR; | |
/** | |
* \fn int32_t (* dev_spi::spi_open) (uint32_t mode, uint32_t param) | |
* \details open an spi device with selected mode (master or slave) with defined \ref param | |
* \param[in] mode working mode (\ref DEV_MASTER_MODE "master" or \ref DEV_SLAVE_MODE "slave") | |
* \param[in] param When mode is \ref DEV_MASTER_MODE, param stands for \ref dev_spi_info::freq "frequency", | |
* when mode is \ref DEV_SLAVE_MODE, param stands for \ref dev_spi_info::clk_mode "slave clock mode" | |
* \retval E_OK Open successfully without any issues | |
* \retval E_OPNED If device was opened before with different parameters, | |
* then just increase the \ref dev_spi_info::opn_cnt "opn_cnt" and return \ref E_OPNED | |
* \retval E_OBJ Device object is not valid | |
* \retval E_SYS Device is opened for different mode before, if you want to open it with different mode, you need to fully close it first. | |
* \retval E_PAR Parameter is not valid | |
* \retval E_NOSPT Open settings are not supported | |
*/ | |
/** | |
* \fn int32_t (* dev_spi::spi_close) (void) | |
* \details close an spi device, just decrease the \ref dev_spi_info::opn_cnt "opn_cnt", | |
* if \ref dev_spi_info::opn_cnt "opn_cnt" equals 0, then close the device | |
* \retval E_OK Close successfully without any issues(including scenario that device is already closed) | |
* \retval E_OPNED Device is still opened, the device \ref dev_spi_info::opn_cnt "opn_cnt" decreased by 1 | |
* \retval E_OBJ Device object is not valid | |
*/ | |
/** | |
* \fn int32_t (* dev_spi::spi_control) (uint32_t ctrl_cmd, void *param) | |
* \details control an spi device by \ref ctrl_cmd, with passed \ref param. | |
* you can control spi device using predefined spi control commands defined using \ref DEV_SET_SYSCMD | |
* (which must be implemented by bsp developer), such as \ref SPI_CMD_MST_SET_FREQ "set spi master frequency", | |
* \ref SPI_CMD_FLUSH_TX "flush tx" and \ref DEVICE_HAL_SPI_CTRLCMD "more". | |
* And you can also control spi device using your own specified commands defined using \ref DEV_SET_USRCMD, | |
* but these specified commands should be defined in your own spi device driver implementation. | |
* \param[in] ctrl_cmd \ref DEVICE_HAL_SPI_CTRLCMD "control command", to change or get some thing related to spi | |
* \param[in,out] param parameters that maybe argument of the command, | |
* or return values of the command, must not be NULL | |
* \retval E_OK Control device successfully | |
* \retval E_CLSED Device is not opened | |
* \retval E_OBJ Device object is not valid or not exists | |
* \retval E_PAR Parameter is not valid for current control command | |
* \retval E_SYS Control device failed, due to hardware issues, such as device is disabled | |
* \retval E_CTX Control device failed, due to different reasons like in transfer state | |
* \retval E_NOSPT Control command is not supported or not valid | |
*/ | |
/** | |
* \fn int32_t (* dev_spi::spi_write) (const void *data, uint32_t len) | |
* \details send \ref data through spi with defined \ref len to slave device . | |
* \param[in] data pointer to data need to send by spi | |
* \param[in] len length of data to be sent | |
* \retval >0 Byte count that was successfully sent for poll method | |
* \retval E_OBJ Device object is not valid or not exists | |
* \retval E_PAR Parameter is not valid | |
* \retval E_CTX Device is still in transfer state | |
* \retval E_SYS Can't write data to hardware due to hardware issues, such as device is disabled | |
*/ | |
/** | |
* \fn int32_t (* dev_spi::spi_read) (void *data, uint32_t len) | |
* \details receive \ref data of defined \ref len through spi from slave device . | |
* \param[out] data pointer to data need to received by spi | |
* \param[in] len length of data to be received | |
* \retval >0 Byte count that was successfully received for poll method | |
* \retval E_OBJ Device object is not valid or not exists | |
* \retval E_CTX Device is still in transfer state | |
* \retval E_PAR Parameter is not valid | |
* \retval E_SYS Can't receive data from hardware due to hardware issues, such as device is disabled | |
*/ | |
/** @} */ | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
/** | |
* \brief get an \ref dev_spi "spi device" by spi device id. | |
* For how to use spi device hal refer to \ref dev_spi "Functions in spi device structure" | |
* \param[in] spi_id id of spi, defined by user | |
* \retval !NULL pointer to an \ref dev_spi "spi device structure" | |
* \retval NULL failed to find the spi device by \ref spi_id | |
* \note need to implemented by user in user code | |
*/ | |
extern DEV_SPI_PTR spi_get_dev(int32_t spi_id); | |
#ifdef __cplusplus | |
} | |
#endif | |
/** @} */ | |
#endif /* _DEVICE_HAL_SPI_H_ */ |