| /* |
| * Copyright (C) 2017 C-SKY Microsystems Co., Ltd. All rights reserved. |
| * |
| * 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 drv_crc.h |
| * @brief Header File for CRC Driver |
| * @version V1.0 |
| * @date 02. June 2017 |
| ******************************************************************************/ |
| #ifndef _CSI_CRC_H_ |
| #define _CSI_CRC_H_ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include <stdint.h> |
| #include <drv_errno.h> |
| #include <drv_common.h> |
| |
| |
| /****** CRC specific error codes *****/ |
| #define CRC_ERROR_MODE (EDRV_SPECIFIC + 1) ///< Specified Mode not supported |
| |
| /// definition for crc handle. |
| typedef void *crc_handle_t; |
| |
| /*----- CRC Control Codes: Mode -----*/ |
| typedef enum { |
| CRC_MODE_CRC8 = 0, ///< Mode CRC8 |
| CRC_MODE_CRC16 , ///< Mode CRC16 |
| CRC_MODE_CRC32 ///< Mode CRC32 |
| } crc_mode_e; |
| |
| /*----- CRC Control Codes: Mode Parameters: Key length -----*/ |
| typedef enum { |
| CRC_STANDARD_CRC_ROHC = 0, ///< Standard CRC RHOC |
| CRC_STANDARD_CRC_MAXIM , ///< Standard CRC MAXIAM |
| CRC_STANDARD_CRC_X25 , ///< Standard CRC X25 |
| CRC_STANDARD_CRC_CCITT , ///< Standard CRC CCITT |
| CRC_STANDARD_CRC_USB , ///< Standard CRC USB |
| CRC_STANDARD_CRC_IBM , ///< Standard CRC IBM |
| CRC_STANDARD_CRC_MODBUS ///< Standard CRC MODBUS |
| } crc_standard_crc_e; |
| |
| /** |
| \brief CRC Status |
| */ |
| typedef struct { |
| uint32_t busy : 1; ///< busy flag |
| } crc_status_t; |
| |
| /****** CRC Event *****/ |
| typedef enum { |
| CRC_EVENT_CALCULATE_COMPLETE = 0, ///< Calculate completed |
| } crc_event_e; |
| |
| typedef void (*crc_event_cb_t)(crc_event_e event); ///< Pointer to \ref crc_event_cb_t : CRC Event call back. |
| |
| /** |
| \brief CRC Device Driver Capabilities. |
| */ |
| typedef struct { |
| uint32_t ROHC : 1; ///< supports ROHC mode |
| uint32_t MAXIM : 1; ///< supports MAXIM mode |
| uint32_t X25 : 1; ///< supports X25 mode |
| uint32_t CCITT : 1; ///< supports CCITT mode |
| uint32_t USB : 1; ///< supports USB mode |
| uint32_t IBM : 1; ///< supports IBM mode |
| uint32_t MODBUS : 1; ///< supports MODBUS mode |
| } crc_capabilities_t; |
| |
| // Function documentation |
| |
| /** |
| \brief get crc handle count. |
| \return crc handle count |
| */ |
| int32_t csi_crc_get_instance_count(void); |
| |
| /** |
| \brief Initialize CRC Interface. 1. Initializes the resources needed for the CRC interface 2.registers event callback function |
| \param[in] idx must not exceed return value of csi_crc_get_handle_count() |
| \param[in] cb_event Pointer to \ref crc_event_cb_t |
| \return return crc handle if success |
| */ |
| crc_handle_t csi_crc_initialize(int32_t idx, crc_event_cb_t cb_event); |
| |
| /** |
| \brief De-initialize CRC Interface. stops operation and releases the software resources used by the interface |
| \param[in] handle crc handle to operate. |
| \return error code |
| */ |
| int32_t csi_crc_uninitialize(crc_handle_t handle); |
| |
| /** |
| \brief Get driver capabilities. |
| \param[in] handle crc handle to operate. |
| \return \ref crc_capabilities_t |
| */ |
| crc_capabilities_t csi_crc_get_capabilities(crc_handle_t handle); |
| |
| /** |
| \brief config crc mode. |
| \param[in] handle crc handle to operate. |
| \param[in] mode \ref crc_mode_e |
| \param[in] standard \ref crc_standard_crc_e |
| \return error code |
| */ |
| int32_t csi_crc_config(crc_handle_t handle, |
| crc_mode_e mode, |
| crc_standard_crc_e standard |
| ); |
| |
| /** |
| \brief calculate crc. |
| \param[in] handle crc handle to operate. |
| \param[in] in Pointer to the input data |
| \param[out] out Pointer to the result. |
| \param[in] len intpu data len. |
| \return error code |
| */ |
| int32_t csi_crc_calculate(crc_handle_t handle, const void *in, void *out, uint32_t len); |
| |
| /** |
| \brief Get CRC status. |
| \param[in] handle crc handle to operate. |
| \return CRC status \ref crc_status_t |
| */ |
| crc_status_t csi_crc_get_status(crc_handle_t handle); |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _CSI_CRC_H_ */ |