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steering-wheel/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_bdma.c

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/**
******************************************************************************
* @file stm32h7xx_ll_bdma.c
* @author MCD Application Team
* @brief BDMA LL module driver.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_ll_bdma.h"
#include "stm32h7xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32H7xx_LL_Driver
* @{
*/
#if defined (BDMA) || defined (BDMA1) || defined (BDMA2)
/** @addtogroup BDMA_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup BDMA_LL_Private_Macros
* @{
*/
#define IS_LL_BDMA_DIRECTION(__VALUE__) (((__VALUE__) == LL_BDMA_DIRECTION_PERIPH_TO_MEMORY) || \
((__VALUE__) == LL_BDMA_DIRECTION_MEMORY_TO_PERIPH) || \
((__VALUE__) == LL_BDMA_DIRECTION_MEMORY_TO_MEMORY))
#define IS_LL_BDMA_MODE(__VALUE__) (((__VALUE__) == LL_BDMA_MODE_NORMAL) || \
((__VALUE__) == LL_BDMA_MODE_CIRCULAR))
#define IS_LL_BDMA_PERIPHINCMODE(__VALUE__) (((__VALUE__) == LL_BDMA_PERIPH_INCREMENT) || \
((__VALUE__) == LL_BDMA_PERIPH_NOINCREMENT))
#define IS_LL_BDMA_MEMORYINCMODE(__VALUE__) (((__VALUE__) == LL_BDMA_MEMORY_INCREMENT) || \
((__VALUE__) == LL_BDMA_MEMORY_NOINCREMENT))
#define IS_LL_BDMA_PERIPHDATASIZE(__VALUE__) (((__VALUE__) == LL_BDMA_PDATAALIGN_BYTE) || \
((__VALUE__) == LL_BDMA_PDATAALIGN_HALFWORD) || \
((__VALUE__) == LL_BDMA_PDATAALIGN_WORD))
#define IS_LL_BDMA_MEMORYDATASIZE(__VALUE__) (((__VALUE__) == LL_BDMA_MDATAALIGN_BYTE) || \
((__VALUE__) == LL_BDMA_MDATAALIGN_HALFWORD) || \
((__VALUE__) == LL_BDMA_MDATAALIGN_WORD))
#define IS_LL_BDMA_NBDATA(__VALUE__) ((__VALUE__) <= 0x0000FFFFU)
#if defined(ADC3)
#define IS_LL_BDMA_PERIPHREQUEST(__VALUE__) ((__VALUE__) <= LL_DMAMUX2_REQ_ADC3)
#else
#define IS_LL_BDMA_PERIPHREQUEST(__VALUE__) ((__VALUE__) <= LL_DMAMUX2_REQ_DFSDM2_FLT0)
#endif /* ADC3 */
#define IS_LL_BDMA_PRIORITY(__VALUE__) (((__VALUE__) == LL_BDMA_PRIORITY_LOW) || \
((__VALUE__) == LL_BDMA_PRIORITY_MEDIUM) || \
((__VALUE__) == LL_BDMA_PRIORITY_HIGH) || \
((__VALUE__) == LL_BDMA_PRIORITY_VERYHIGH))
#define IS_LL_BDMA_ALL_CHANNEL_INSTANCE(INSTANCE, CHANNEL) ((((INSTANCE) == BDMA) && \
(((CHANNEL) == LL_BDMA_CHANNEL_0) || \
((CHANNEL) == LL_BDMA_CHANNEL_1) || \
((CHANNEL) == LL_BDMA_CHANNEL_2) || \
((CHANNEL) == LL_BDMA_CHANNEL_3) || \
((CHANNEL) == LL_BDMA_CHANNEL_4) || \
((CHANNEL) == LL_BDMA_CHANNEL_5) || \
((CHANNEL) == LL_BDMA_CHANNEL_6) || \
((CHANNEL) == LL_BDMA_CHANNEL_7))))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup BDMA_LL_Exported_Functions
* @{
*/
/** @addtogroup BDMA_LL_EF_Init
* @{
*/
/**
* @brief De-initialize the DMA registers to their default reset values.
* @param BDMAx BDMAx Instance
* @param Channel This parameter can be one of the following values:
* @arg @ref LL_BDMA_CHANNEL_0
* @arg @ref LL_BDMA_CHANNEL_1
* @arg @ref LL_BDMA_CHANNEL_2
* @arg @ref LL_BDMA_CHANNEL_3
* @arg @ref LL_BDMA_CHANNEL_4
* @arg @ref LL_BDMA_CHANNEL_5
* @arg @ref LL_BDMA_CHANNEL_6
* @arg @ref LL_BDMA_CHANNEL_7
* @arg @ref LL_BDMA_CHANNEL_ALL
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DMA registers are de-initialized
* - ERROR: DMA registers are not de-initialized
*/
uint32_t LL_BDMA_DeInit(BDMA_TypeDef *BDMAx, uint32_t Channel)
{
BDMA_Channel_TypeDef *tmp ;
ErrorStatus status = SUCCESS;
/* Check the DMA Instance DMAx and Channel parameters */
assert_param(IS_LL_BDMA_ALL_CHANNEL_INSTANCE(BDMAx, Channel) || (Channel == LL_BDMA_CHANNEL_ALL));
if (Channel == LL_BDMA_CHANNEL_ALL)
{
if (BDMAx == BDMA)
{
/* Force reset of BDMA clock */
LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA1);
/* Release reset of BDMA clock */
LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA1);
}
else
{
status = ERROR;
}
}
else
{
tmp = (BDMA_Channel_TypeDef *)(__LL_BDMA_GET_CHANNEL_INSTANCE(BDMAx, Channel));
/* Disable the selected DMAx_Channely */
CLEAR_BIT(tmp->CCR, BDMA_CCR_EN);
/* Reset DMAx_Channely control register */
LL_BDMA_WriteReg(tmp, CCR, 0U);
/* Reset DMAx_Channely remaining bytes register */
LL_BDMA_WriteReg(tmp, CNDTR, 0U);
/* Reset DMAx_Channely peripheral address register */
LL_BDMA_WriteReg(tmp, CPAR, 0U);
/* Reset DMAx_Channely memory 0 address register */
LL_BDMA_WriteReg(tmp, CM0AR, 0U);
/* Reset DMAx_Channely memory 1 address register */
LL_BDMA_WriteReg(tmp, CM1AR, 0U);
/* Reset Request register field for BDMAx Channel */
LL_BDMA_SetPeriphRequest(BDMAx, Channel, LL_DMAMUX2_REQ_MEM2MEM);
if (Channel == LL_BDMA_CHANNEL_0)
{
/* Reset interrupt pending bits for DMAx Channel0 */
LL_BDMA_ClearFlag_GI0(BDMAx);
}
else if (Channel == LL_BDMA_CHANNEL_1)
{
/* Reset interrupt pending bits for DMAx Channel1 */
LL_BDMA_ClearFlag_GI1(BDMAx);
}
else if (Channel == LL_BDMA_CHANNEL_2)
{
/* Reset interrupt pending bits for DMAx Channel2 */
LL_BDMA_ClearFlag_GI2(BDMAx);
}
else if (Channel == LL_BDMA_CHANNEL_3)
{
/* Reset interrupt pending bits for DMAx Channel3 */
LL_BDMA_ClearFlag_GI3(BDMAx);
}
else if (Channel == LL_BDMA_CHANNEL_4)
{
/* Reset interrupt pending bits for DMAx Channel4 */
LL_BDMA_ClearFlag_GI4(BDMAx);
}
else if (Channel == LL_BDMA_CHANNEL_5)
{
/* Reset interrupt pending bits for DMAx Channel5 */
LL_BDMA_ClearFlag_GI5(BDMAx);
}
else if (Channel == LL_BDMA_CHANNEL_6)
{
/* Reset interrupt pending bits for DMAx Channel6 */
LL_BDMA_ClearFlag_GI6(BDMAx);
}
else if (Channel == LL_BDMA_CHANNEL_7)
{
/* Reset interrupt pending bits for DMAx Channel7 */
LL_BDMA_ClearFlag_GI7(BDMAx);
}
else
{
status = ERROR;
}
}
return (uint32_t)status;
}
/**
* @brief Initialize the BDMA registers according to the specified parameters in BDMA_InitStruct.
* @note To convert BDMAx_Channely Instance to BDMAx Instance and Channely, use helper macros :
* @arg @ref __LL_BDMA_GET_INSTANCE
* @arg @ref __LL_BDMA_GET_CHANNEL
* @param BDMAx BDMAx Instance
* @param Channel This parameter can be one of the following values:
* @arg @ref LL_BDMA_CHANNEL_0
* @arg @ref LL_BDMA_CHANNEL_1
* @arg @ref LL_BDMA_CHANNEL_2
* @arg @ref LL_BDMA_CHANNEL_3
* @arg @ref LL_BDMA_CHANNEL_4
* @arg @ref LL_BDMA_CHANNEL_5
* @arg @ref LL_BDMA_CHANNEL_6
* @arg @ref LL_BDMA_CHANNEL_7
* @param BDMA_InitStruct pointer to a @ref LL_BDMA_InitTypeDef structure.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DMA registers are initialized
* - ERROR: Not applicable
*/
uint32_t LL_BDMA_Init(BDMA_TypeDef *BDMAx, uint32_t Channel, LL_BDMA_InitTypeDef *BDMA_InitStruct)
{
/* Check the DMA Instance DMAx and Channel parameters */
assert_param(IS_LL_BDMA_ALL_CHANNEL_INSTANCE(BDMAx, Channel));
/* Check the DMA parameters from BDMA_InitStruct */
assert_param(IS_LL_BDMA_DIRECTION(BDMA_InitStruct->Direction));
assert_param(IS_LL_BDMA_MODE(BDMA_InitStruct->Mode));
assert_param(IS_LL_BDMA_PERIPHINCMODE(BDMA_InitStruct->PeriphOrM2MSrcIncMode));
assert_param(IS_LL_BDMA_MEMORYINCMODE(BDMA_InitStruct->MemoryOrM2MDstIncMode));
assert_param(IS_LL_BDMA_PERIPHDATASIZE(BDMA_InitStruct->PeriphOrM2MSrcDataSize));
assert_param(IS_LL_BDMA_MEMORYDATASIZE(BDMA_InitStruct->MemoryOrM2MDstDataSize));
assert_param(IS_LL_BDMA_NBDATA(BDMA_InitStruct->NbData));
assert_param(IS_LL_BDMA_PERIPHREQUEST(BDMA_InitStruct->PeriphRequest));
assert_param(IS_LL_BDMA_PRIORITY(BDMA_InitStruct->Priority));
/*---------------------------- DMAx CCR Configuration ------------------------
* Configure DMAx_Channely: data transfer direction, data transfer mode,
* peripheral and memory increment mode,
* data size alignment and priority level with parameters :
* - Direction: BDMA_CCR_DIR and BDMA_CCR_MEM2MEM bits
* - Mode: BDMA_CCR_CIRC bit
* - PeriphOrM2MSrcIncMode: BDMA_CCR_PINC bit
* - MemoryOrM2MDstIncMode: BDMA_CCR_MINC bit
* - PeriphOrM2MSrcDataSize: BDMA_CCR_PSIZE[1:0] bits
* - MemoryOrM2MDstDataSize: BDMA_CCR_MSIZE[1:0] bits
* - Priority: BDMA_CCR_PL[1:0] bits
*/
LL_BDMA_ConfigTransfer(BDMAx, Channel, BDMA_InitStruct->Direction | \
BDMA_InitStruct->Mode | \
BDMA_InitStruct->PeriphOrM2MSrcIncMode | \
BDMA_InitStruct->MemoryOrM2MDstIncMode | \
BDMA_InitStruct->PeriphOrM2MSrcDataSize | \
BDMA_InitStruct->MemoryOrM2MDstDataSize | \
BDMA_InitStruct->Priority);
/*-------------------------- DMAx CMAR Configuration -------------------------
* Configure the memory or destination base address with parameter :
* - MemoryOrM2MDstAddress: BDMA_CMAR_MA[31:0] bits
*/
LL_BDMA_SetMemoryAddress(BDMAx, Channel, BDMA_InitStruct->MemoryOrM2MDstAddress);
/*-------------------------- DMAx CPAR Configuration -------------------------
* Configure the peripheral or source base address with parameter :
* - PeriphOrM2MSrcAddress: BDMA_CPAR_PA[31:0] bits
*/
LL_BDMA_SetPeriphAddress(BDMAx, Channel, BDMA_InitStruct->PeriphOrM2MSrcAddress);
/*--------------------------- DMAx CNDTR Configuration -----------------------
* Configure the peripheral base address with parameter :
* - NbData: BDMA_CNDTR_NDT[15:0] bits
*/
LL_BDMA_SetDataLength(BDMAx, Channel, BDMA_InitStruct->NbData);
/*--------------------------- DMAMUXx CCR Configuration ----------------------
* Configure the DMA request for DMA Channels on DMAMUX Channel x with parameter :
* - PeriphRequest: BDMA_CxCR[7:0] bits
*/
LL_BDMA_SetPeriphRequest(BDMAx, Channel, BDMA_InitStruct->PeriphRequest);
return (uint32_t)SUCCESS;
}
/**
* @brief Set each @ref LL_BDMA_InitTypeDef field to default value.
* @param BDMA_InitStruct Pointer to a @ref LL_BDMA_InitTypeDef structure.
* @retval None
*/
void LL_BDMA_StructInit(LL_BDMA_InitTypeDef *BDMA_InitStruct)
{
/* Set BDMA_InitStruct fields to default values */
BDMA_InitStruct->PeriphOrM2MSrcAddress = 0x00000000U;
BDMA_InitStruct->MemoryOrM2MDstAddress = 0x00000000U;
BDMA_InitStruct->Direction = LL_BDMA_DIRECTION_PERIPH_TO_MEMORY;
BDMA_InitStruct->Mode = LL_BDMA_MODE_NORMAL;
BDMA_InitStruct->PeriphOrM2MSrcIncMode = LL_BDMA_PERIPH_NOINCREMENT;
BDMA_InitStruct->MemoryOrM2MDstIncMode = LL_BDMA_MEMORY_NOINCREMENT;
BDMA_InitStruct->PeriphOrM2MSrcDataSize = LL_BDMA_PDATAALIGN_BYTE;
BDMA_InitStruct->MemoryOrM2MDstDataSize = LL_BDMA_MDATAALIGN_BYTE;
BDMA_InitStruct->NbData = 0x00000000U;
BDMA_InitStruct->PeriphRequest = LL_DMAMUX2_REQ_MEM2MEM;
BDMA_InitStruct->Priority = LL_BDMA_PRIORITY_LOW;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* BDMA || BDMA1 || BDMA2 */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
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