[AVR] Add CRC HAL file for CRC module.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@15909 27425a3e-05d8-49a3-a47f-9c15f0e5edd8
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Theodore Ateba
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/*
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ChibiOS - Copyright (C) 2006..2022 Theodore Ateba
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file hal_crc.c
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* @brief CRC Driver code.
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*
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* @addtogroup CRCv1
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* @{
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*/
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#include "hal.h"
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/* Custom Driver must directly include the low level driver. */
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#include "hal_crc_lld.h"
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#if HAL_USE_CRC || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local variables and types. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief CRC Driver initialization.
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* @note This function is not implicitly invoked by @p halInit(). So we
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* need to explicitly initialize the driver by calling this function.
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*
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* @init
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*/
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void crcInit(void) {
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crc_lld_init();
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}
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/**
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* @brief Initializes the standard part of a @p CRCDriver structure.
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*
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* @param[out] crcp pointer to the @p CRCDriver object
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*
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* @init
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*/
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void crcObjectInit(CRCDriver *crcp) {
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crc_lld_object_init(crcp);
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}
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/**
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* @brief Configures and activates the CRC peripheral.
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*
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* @param[in] crcp pointer to the @p CRCDriver object
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* @param[in] config pointer to the @p CRCConfig object
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* @return The operation status.
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*
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* @api
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*/
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msg_t crcStart(CRCDriver *crcp, CRCConfig *config) {
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osalDbgCheck((crcp != NULL) && (config != NULL));
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osalSysLock();
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osalDbgAssert((crcp->state == CRC_STOP) || (crcp->state == CRC_READY),
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"invalid state");
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crcp->config = config;
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crc_lld_start(crcp, config);
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crcp->state = CRC_READY;
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osalSysUnlock();
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return HAL_RET_SUCCESS;
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}
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/**
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* @brief Deactivates the CRC peripheral.
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*
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* @param[in] crcp pointer to the @p CRCDriver object
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*
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* @api
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*/
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void crcStop(CRCDriver *crcp) {
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osalDbgCheck(crcp != NULL);
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osalSysLock();
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osalDbgAssert((crcp->state == CRC_STOP) || (crcp->state == CRC_READY),
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"invalid state");
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crc_lld_stop(crcp);
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crcp->config = NULL;
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crcp->state = CRC_STOP;
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osalSysUnlock();
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}
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/**
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* @brief Resets CRC module.
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*
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* @param[in] crcp pointer to the @p CRCDriver object
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* @param[in] rt type of reset to perform, all to zeros or all to ones
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*
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* @api
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*/
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void crcReset(CRCDriver *crcp, crcreset_t rt) {
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osalDbgCheck(crcp != NULL);
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osalSysLock();
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osalDbgAssert(crcp->state == CRC_READY, "not ready");
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crc_lld_reset(crcp, rt);
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osalSysUnlock();
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}
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uint16_t crcComputeCRC16OnData(CRCDriver *crcp, uint8_t *srcp, size_t size) {
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uint16_t retVal = 0;
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osalDbgCheck(crcp != NULL);
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osalSysLock();
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retVal = crc_lld_compute_crc16_on_data(crcp, srcp, size);
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osalSysUnlock();
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return retVal;
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}
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#endif /* HAL_USE_CRC */
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/** @} */
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@ -0,0 +1,82 @@
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/*
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ChibiOS - Copyright (C) 2006..2022 Theodore Ateba
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file hal_crc.h
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* @brief CRC Driver macros and structures.
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*
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* @addtogroup CRC
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* @{
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*/
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#ifndef HAL_CRC_H
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#define HAL_CRC_H
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#include <stdint.h>
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#include <stddef.h>
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#if (HAL_USE_CRC == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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#include "hal_crc_lld.h"
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void crcInit(void);
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void crcObjectInit(CRCDriver *crcp);
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msg_t crcStart(CRCDriver *crcp, CRCConfig * config);
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void crcStop(CRCDriver *crcp);
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void crcReset(CRCDriver *crcp, crcreset_t rt);
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/* @TODO: uint16_t crcComputeCRC16OnMemory(CRCDriver *crcp, uint8_t *src, size_t size); */
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/* @TODO: uint32_t crcComputeCRC32OnMemory(CRCDriver *crcp, uint8_t *src, size_t size); */
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/* @TODO: uint16_t crcComputeCRC16OnDMA(CRCDriver *crcp, uint8_t *src, size_t size); */
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/* @TODO: uint32_t crcComputeCRC32OnDMA(CRCDriver *crcp, uint8_t *src, size_t size); */
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uint16_t crcComputeCRC16OnData(CRCDriver *crcp, uint8_t *srcp, size_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_CRC == TRUE */
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#endif /* HAL_CRC_H */
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/** @} */
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@ -116,8 +116,6 @@ typedef struct {
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} CHECKSUM3;
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} CHECKSUM3;
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} xmega_crc_t;
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} xmega_crc_t;
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/** @} */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver macros. */
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/* Driver macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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