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hal_ll_dma.h
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hal_ll_dma.h
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/****************************************************************************
**
** Copyright (C) ${COPYRIGHT_YEAR} MikroElektronika d.o.o.
** Contact: https://www.mikroe.com/contact
**
** This file is part of the mikroSDK package
**
** Commercial License Usage
**
** Licensees holding valid commercial NECTO compilers AI licenses may use this
** file in accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The MikroElektronika Company.
** For licensing terms and conditions see
** https://www.mikroe.com/legal/software-license-agreement.
** For further information use the contact form at
** https://www.mikroe.com/contact.
**
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used for
** non-commercial projects under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** The above copyright notice and this permission notice shall be
** included in all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** OF MERCHANTABILITY, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
** TO THE WARRANTIES FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
** DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
** OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
** OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
**
****************************************************************************/
/*!
* @file hal_ll_dma.h
* @brief API for DMA HAL LOW LEVEL layer.
*/
#ifndef _HAL_LL_DMA_H_
#define _HAL_LL_DMA_H_
#include "hal_ll_target.h"
#ifdef __cplusplus
extern "C"{
#endif
/**
* @details Return values.
*/
typedef enum
{
HAL_LL_DMA_SUCCESS = 0, /*!< Success. */
HAL_LL_DMA_ERROR = (-1) /*!< Error. */
} hal_ll_dma_err_t;
/**
* @details Module state values.
*/
typedef enum
{
HAL_LL_DMA_STATE_FREE = 0, /*!< DMA object is free for use. */
HAL_LL_DMA_STATE_ALLOCATED /*!< DMA object has been allocated - not free for use. */
} hal_ll_dma_state_t;
/**
* @details Source address memory region.
*/
typedef enum
{
HAL_LL_DMA_SOURCE_MEMORY_REGION_RAM = 0, /*!< DMA source address is in RAM section. */
HAL_LL_DMA_SOURCE_MEMORY_REGION_PFM = 1, /*!< DMA source address is in Program Flash Memory section. */
HAL_LL_DMA_SOURCE_MEMORY_REGION_DEEPROM = 2 /*!< DMA source address is in Data EEPROM section. */
} hal_ll_dma_source_memory_region_t;
/**
* @details Module direction values.
*/
typedef enum
{
HAL_LL_DMA_DIRECTION_MEMORY_TO_MEMORY = 0, /*!< M2M */
HAL_LL_DMA_DIRECTION_MEMORY_TO_PERIPH, /*!< M2P */
HAL_LL_DMA_DIRECTION_PERIPH_TO_MEMORY, /*!< P2M */
HAL_LL_DMA_DIRECTION_PERIPH_TO_PERIPH, /*!< P2P */
HAL_LL_DMA_DIRECTION_DEFAULT = HAL_LL_DMA_DIRECTION_MEMORY_TO_MEMORY /*!< Default value is M2M. */
} hal_ll_dma_direction_t;
/**
* @details Module data alignment values.
*/
typedef enum
{
HAL_LL_DMA_DATA_ALIGN_BYTES_1 = 0, /*!< Align data to byte (uint8_t). */
HAL_LL_DMA_DATA_ALIGN_BYTES_2, /*!< Align data to half word (uint16_t). */
HAL_LL_DMA_DATA_ALIGN_BYTES_3, /*!< Align data to 3 bytes (uint24_t). */
HAL_LL_DMA_DATA_ALIGN_BYTES_4, /*!< Align data to word (uint32_t). */
HAL_LL_DMA_DATA_ALIGN_DEFAULT = HAL_LL_DMA_DATA_ALIGN_BYTES_1 /*!< Default data alignment of byte (uint8_t). */
} hal_ll_dma_data_align_t;
/**
* @details Module mode values.
*/
typedef enum
{
HAL_LL_DMA_MODE_NORMAL = 0, /*!< Normal mode. */
HAL_LL_DMA_MODE_CIRCULAR, /*!< Circular mode. */
HAL_LL_DMA_MODE_DEFAULT = HAL_LL_DMA_MODE_NORMAL /*!< Default mode set to normal. */
} hal_ll_dma_mode_t;
/**
* @details Module priority levels.
*/
typedef enum
{
HAL_LL_DMA_PRIORITY_LOW = 0, /*!< Sets priority level to low. */
HAL_LL_DMA_PRIORITY_MEDIUM, /*!< Sets priority level to medium. */
HAL_LL_DMA_PRIORITY_HIGH, /*!< Sets priority level to high. */
HAL_LL_DMA_PRIORITY_VERY_HIGH, /*!< Sets priority level to very high. */
HAL_LL_DMA_PRIORITY_DEFAULT = HAL_LL_DMA_PRIORITY_MEDIUM /*!< Default priority level set to medium. */
} hal_ll_dma_priority_t;
/**
* @details Module burst increment size.
*/
typedef enum
{
HAL_LL_DMA_BURST_SIZE_INCREMENT_1 = 0, /*!< Dma module burst increment size set to 1 byte. */
HAL_LL_DMA_BURST_SIZE_INCREMENT_2, /*!< Dma module burst increment size set to 2 bytes. */
HAL_LL_DMA_BURST_SIZE_INCREMENT_4, /*!< Dma module burst increment size set to 4 bytes. */
HAL_LL_DMA_BURST_SIZE_INCREMENT_8, /*!< Dma module burst increment size set to 8 bytes. */
HAL_LL_DMA_BURST_SIZE_INCREMENT_16, /*!< Dma module burst increment size set to 16 bytes. */
HAL_LL_DMA_BURST_SIZE_INCREMENT_32, /*!< Dma module burst increment size set to 32 bytes. */
HAL_LL_DMA_BURST_SIZE_INCREMENT_DEFAULT = HAL_LL_DMA_BURST_SIZE_INCREMENT_1 /*!< Default burst increment size set to 1 byte. */
} hal_ll_dma_burst_size_t;
/**
* @brief HAL LL DMA Configuration Structure prototype.
*/
typedef struct
{
uint8_t module; /*!< Specifies the module. */
uint8_t stream; /*!< Specifies the stream. */
uint8_t channel; /*!< Specifies the channel used for the specified stream. */
hal_ll_dma_direction_t direction; /*!< Specifies if the data will be transferred from memory to peripheral,
from memory to memory, from peripheral to memory, or from
peripheral to peripheral.
This parameter can be a value of @ref hal_ll_dma_direction_t */
hal_ll_dma_mode_t mode; /*!< Specifies the operation mode of the DMA Stream.
This parameter can be a value of @ref hal_ll_dma_mode_t */
bool src_inc; /*!< Specifies whether the Source address register should be incremented or not. */
hal_ll_dma_data_align_t data_align_source; /*!< Specifies the Source data width.
This parameter can be a value of @ref hal_ll_dma_data_align_t */
hal_ll_dma_burst_size_t burst_size_source; /*!< Specifies the Burst transfer configuration for the source transfers.
It specifies the amount of data to be transferred in a single non interruptable
transaction.
This parameter can be a value of @ref hal_ll_dma_burst_size_t
@note The burst mode is possible only if the address increment mode is enabled. */
bool dst_inc; /*!< Specifies whether the Destination address register should be incremented or not. */
hal_ll_dma_data_align_t data_align_destination; /*!< Specifies the Destination data width.
This parameter can be a value of @ref hal_ll_dma_data_align_t */
hal_ll_dma_burst_size_t burst_size_destination; /*!< Specifies the Burst transfer configuration for the destination transfers.
It specifies the amount of data to be transferred in a single non interruptable
transaction.
This parameter can be a value of @ref hal_ll_dma_burst_size_t
@note The burst mode is possible only if the address increment mode is enabled. */
hal_ll_dma_priority_t priority; /*!< Specifies the software priority for the DMA Stream.
This parameter can be a value of @ref hal_ll_dma_priority_t */
uint32_t addr_src; /*!< Address to transfer from. */
uint32_t addr_dst; /*!< Address to transfer to. */
size_t transfer_length; /*!< Number of bytes to transfer. */
} hal_ll_dma_config_t;
/**
* @brief HAL DMA Handle prototype.
* @details DMA hal context structure, used by every other function later on.
*/
typedef struct
{
handle_t handle; /*!< DMA HAL LL handle. */
hal_ll_dma_config_t config; /*!< DMA HAL LL configuration structure. */
uint8_t module; /*!< Specifies the module. */
uint8_t stream; /*!< Specifies the stream. */
uint8_t channel; /*!< Specifies the channel used for the specified stream. */
hal_ll_dma_state_t allocated; /*!< Is the object allocated or not? */
bool initialized; /*!< Is the object initialized or not? */
} hal_ll_dma_t;
/**
* @brief Initializes the DMA module.
* @details Enables module clock and initializes to values set in
* @b hal_ll_dma_t->hal_ll_dma_config_t
* @param[in,out] obj DMA HAL LL object.
* See #hal_ll_dma_t structure definition for detailed explanation.
* @return The function can return one of the values defined by
* hal_ll_err_t, which is dependant on the architecture and ported low level layer.
* @note It is recommended to check return value for error.
*/
hal_ll_err_t hal_ll_dma_init( hal_ll_dma_t *obj );
/**
* @brief Set the DMA mode.
* @details Sets DMA mode to be used by the DMA HAL LL.
* @param[in,out] obj DMA HAL LL object.
* See #hal_ll_dma_t structure definition for detailed explanation.
* @param[in] mode DMA mode.
* See #hal_ll_dma_mode_t for valid values.
* @return The function can return one of the values defined by
* hal_ll_err_t, which is dependant on the architecture and ported low level layer.
* @note It is recommended to check return value for error.
*/
hal_ll_err_t hal_ll_dma_set_mode( hal_ll_dma_t *obj, hal_ll_dma_mode_t mode );
/**
* @brief Set the DMA direction.
* @details Sets DMA direction to be used by the DMA HAL LL.
* @param[in,out] obj DMA HAL LL object.
* See #hal_ll_dma_t structure definition for detailed explanation.
* @param[in] direction DMA direction.
* See #hal_ll_dma_direction_t for valid values.
* @return The function can return one of the values defined by
* hal_ll_err_t, which is dependant on the architecture and ported low level layer.
* @note It is recommended to check return value for error.
*/
hal_ll_err_t hal_ll_dma_set_direction( hal_ll_dma_t *obj, hal_ll_dma_direction_t direction );
/**
* @brief Set the DMA priority.
* @details Sets DMA priority level to be used by the DMA HAL LL.
* @param[in,out] obj DMA HAL LL object.
* See #hal_ll_dma_t structure definition for detailed explanation.
* @param[in] priority DMA priority level.
* See #hal_ll_dma_priority_t for valid values.
* @return The function can return one of the values defined by
* hal_ll_err_t, which is dependant on the architecture and ported low level layer.
* @note It is recommended to check return value for error.
*/
hal_ll_err_t hal_ll_dma_set_priority( hal_ll_dma_t *obj, hal_ll_dma_priority_t priority );
/**
* @brief Configure the DMA transfer.
* @details Configures initialized DMA stream for transfer.
* @param[in,out] obj DMA HAL LL object.
* See #hal_dma_t structure definition for detailed explanation.
* @param[in] addr_src Source address for transfer.
* @param[in] addr_dst Destination address for transfer.
* @param[in] transfer_size Number of bytes to transfer.
* @param[in] src_mem_type Source address memory region.
* @return Nothing.
*/
hal_ll_err_t hal_ll_dma_set_parameters( hal_ll_dma_t *obj, uint32_t addr_src, uint32_t addr_dst, size_t transfer_size, hal_ll_dma_source_memory_region_t src_mem_type );
/**
* @brief Initializes the DMA transfer.
* @details Starts previously configured DMA transfer by enabling stream.
* @param[in,out] obj DMA HAL LL object.
* See #hal_ll_dma_t structure definition for detailed explanation.
* @return The function can return one of the values defined by
* hal_ll_err_t, which is dependant on the architecture and ported low level layer.
* @note It is recommended to check return value for error.
*/
hal_ll_err_t hal_ll_dma_transfer_start( hal_ll_dma_t *obj );
/**
* @brief Stops the DMA transfer.
* @details Stops an active DMA transfer by disabling stream.
* @param[in,out] obj DMA HAL LL object.
* See #hal_ll_dma_t structure definition for detailed explanation.
* @return The function can return one of the values defined by
* hal_ll_err_t, which is dependant on the architecture and ported low level layer.
* @note It is recommended to check return value for error.
*/
hal_ll_err_t hal_ll_dma_transfer_stop( hal_ll_dma_t *obj );
/**
* @brief Aborts a DMA transfer.
* @details Aborts any ongoing DMA transfers and disables stream.
* @param[in,out] obj DMA HAL LL object.
* See #hal_ll_dma_t structure definition for detailed explanation.
* @return The function can return one of the values defined by
* hal_ll_err_t, which is dependant on the architecture and ported low level layer.
* @note It is recommended to check return value for error.
*/
hal_ll_err_t hal_ll_dma_transfer_abort( hal_ll_dma_t *obj );
/**
* @brief De-initializes the DMA module.
* @details Disables module clock and de-initializes module.
* @param[in,out] obj DMA HAL LL object.
* See #hal_ll_dma_t structure definition for detailed explanation.
* @return The function can return one of the values defined by
* hal_ll_err_t, which is dependant on the architecture and ported low level layer.
* @note It is recommended to check return value for error.
*/
hal_ll_err_t hal_ll_dma_deinit( hal_ll_dma_t *dma_obj );
#ifdef __cplusplus
}
#endif
#endif // _HAL_LL_DMA_H_
// ------------------------------------------------------------------------- END