1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
|
/**
******************************************************************************
* @file stm32h7xx_hal_mmc_ex.c
* @author MCD Application Team
* @brief MMC card Extended HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the Secure Digital (MMC) peripheral:
* + Extended features functions
*
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
The MMC Extension HAL driver can be used as follows:
(+) Configure Buffer0 and Buffer1 start address and Buffer size using HAL_MMCEx_ConfigDMAMultiBuffer() function.
(+) Start Read and Write for multibuffer mode using HAL_MMCEx_ReadBlocksDMAMultiBuffer() and HAL_MMCEx_WriteBlocksDMAMultiBuffer() functions.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2017 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_hal.h"
/** @addtogroup STM32H7xx_HAL_Driver
* @{
*/
/** @defgroup MMCEx MMCEx
* @ingroup RTEMSBSPsARMSTM32H7
* @brief MMC Extended HAL module driver
* @{
*/
#ifdef HAL_MMC_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup MMCEx_Exported_Functions
* @{
*/
/** @addtogroup MMCEx_Exported_Functions_Group1
* @brief Multibuffer functions
*
@verbatim
==============================================================================
##### Multibuffer functions #####
==============================================================================
[..]
This section provides functions allowing to configure the multibuffer mode and start read and write
multibuffer mode for MMC HAL driver.
@endverbatim
* @{
*/
/**
* @brief Configure DMA Dual Buffer mode. The Data transfer is managed by an Internal DMA.
* @param hmmc: MMC handle
* @param pDataBuffer0: Pointer to the buffer0 that will contain/receive the transfered data
* @param pDataBuffer1: Pointer to the buffer1 that will contain/receive the transfered data
* @param BufferSize: Size of Buffer0 in Blocks. Buffer0 and Buffer1 must have the same size.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MMCEx_ConfigDMAMultiBuffer(MMC_HandleTypeDef *hmmc, uint32_t * pDataBuffer0, uint32_t * pDataBuffer1, uint32_t BufferSize)
{
if(hmmc->State == HAL_MMC_STATE_READY)
{
hmmc->Instance->IDMABASE0= (uint32_t) pDataBuffer0 ;
hmmc->Instance->IDMABASE1= (uint32_t) pDataBuffer1 ;
hmmc->Instance->IDMABSIZE= (uint32_t) (MMC_BLOCKSIZE * BufferSize);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Reads block(s) from a specified address in a card. The received Data will be stored in Buffer0 and Buffer1.
* Buffer0, Buffer1 and BufferSize need to be configured by function HAL_MMCEx_ConfigDMAMultiBuffer before call this function.
* @param hmmc: MMC handle
* @param BlockAdd: Block Address from where data is to be read
* @param NumberOfBlocks: Total number of blocks to read
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MMCEx_ReadBlocksDMAMultiBuffer(MMC_HandleTypeDef *hmmc, uint32_t BlockAdd, uint32_t NumberOfBlocks)
{
SDMMC_DataInitTypeDef config;
uint32_t DmaBase0_reg, DmaBase1_reg;
uint32_t errorstate;
uint32_t add = BlockAdd;
if(hmmc->State == HAL_MMC_STATE_READY)
{
if((BlockAdd + NumberOfBlocks) > (hmmc->MmcCard.LogBlockNbr))
{
hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
DmaBase0_reg = hmmc->Instance->IDMABASE0;
DmaBase1_reg = hmmc->Instance->IDMABASE1;
if ((hmmc->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U))
{
hmmc->ErrorCode = HAL_MMC_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
/* Initialize data control register */
hmmc->Instance->DCTRL = 0;
hmmc->ErrorCode = HAL_MMC_ERROR_NONE;
hmmc->State = HAL_MMC_STATE_BUSY;
if ((hmmc->MmcCard.CardType) != MMC_HIGH_CAPACITY_CARD)
{
add *= 512U;
}
/* Configure the MMC DPSM (Data Path State Machine) */
config.DataTimeOut = SDMMC_DATATIMEOUT;
config.DataLength = MMC_BLOCKSIZE * NumberOfBlocks;
config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B;
config.TransferDir = SDMMC_TRANSFER_DIR_TO_SDMMC;
config.TransferMode = SDMMC_TRANSFER_MODE_BLOCK;
config.DPSM = SDMMC_DPSM_DISABLE;
(void)SDMMC_ConfigData(hmmc->Instance, &config);
hmmc->Instance->DCTRL |= SDMMC_DCTRL_FIFORST;
__SDMMC_CMDTRANS_ENABLE( hmmc->Instance);
hmmc->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0;
/* Read Blocks in DMA mode */
hmmc->Context = (MMC_CONTEXT_READ_MULTIPLE_BLOCK | MMC_CONTEXT_DMA);
/* Read Multi Block command */
errorstate = SDMMC_CmdReadMultiBlock(hmmc->Instance, add);
if(errorstate != HAL_MMC_ERROR_NONE)
{
hmmc->State = HAL_MMC_STATE_READY;
hmmc->ErrorCode |= errorstate;
return HAL_ERROR;
}
__HAL_MMC_ENABLE_IT(hmmc, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_RXOVERR | SDMMC_IT_DATAEND | SDMMC_FLAG_IDMATE | SDMMC_FLAG_IDMABTC));
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Write block(s) to a specified address in a card. The transfered Data are stored in Buffer0 and Buffer1.
* Buffer0, Buffer1 and BufferSize need to be configured by function HAL_MMCEx_ConfigDMAMultiBuffer before call this function.
* @param hmmc: MMC handle
* @param BlockAdd: Block Address from where data is to be read
* @param NumberOfBlocks: Total number of blocks to read
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MMCEx_WriteBlocksDMAMultiBuffer(MMC_HandleTypeDef *hmmc, uint32_t BlockAdd, uint32_t NumberOfBlocks)
{
SDMMC_DataInitTypeDef config;
uint32_t errorstate;
uint32_t DmaBase0_reg, DmaBase1_reg;
uint32_t add = BlockAdd;
if(hmmc->State == HAL_MMC_STATE_READY)
{
if((BlockAdd + NumberOfBlocks) > (hmmc->MmcCard.LogBlockNbr))
{
hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
DmaBase0_reg = hmmc->Instance->IDMABASE0;
DmaBase1_reg = hmmc->Instance->IDMABASE1;
if ((hmmc->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U))
{
hmmc->ErrorCode = HAL_MMC_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
/* Initialize data control register */
hmmc->Instance->DCTRL = 0;
hmmc->ErrorCode = HAL_MMC_ERROR_NONE;
hmmc->State = HAL_MMC_STATE_BUSY;
if ((hmmc->MmcCard.CardType) != MMC_HIGH_CAPACITY_CARD)
{
add *= 512U;
}
/* Configure the MMC DPSM (Data Path State Machine) */
config.DataTimeOut = SDMMC_DATATIMEOUT;
config.DataLength = MMC_BLOCKSIZE * NumberOfBlocks;
config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B;
config.TransferDir = SDMMC_TRANSFER_DIR_TO_CARD;
config.TransferMode = SDMMC_TRANSFER_MODE_BLOCK;
config.DPSM = SDMMC_DPSM_DISABLE;
(void)SDMMC_ConfigData(hmmc->Instance, &config);
__SDMMC_CMDTRANS_ENABLE( hmmc->Instance);
hmmc->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0;
/* Write Blocks in DMA mode */
hmmc->Context = (MMC_CONTEXT_WRITE_MULTIPLE_BLOCK | MMC_CONTEXT_DMA);
/* Write Multi Block command */
errorstate = SDMMC_CmdWriteMultiBlock(hmmc->Instance, add);
if(errorstate != HAL_MMC_ERROR_NONE)
{
hmmc->State = HAL_MMC_STATE_READY;
hmmc->ErrorCode |= errorstate;
return HAL_ERROR;
}
__HAL_MMC_ENABLE_IT(hmmc, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_TXUNDERR | SDMMC_IT_DATAEND | SDMMC_FLAG_IDMATE | SDMMC_FLAG_IDMABTC));
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Change the DMA Buffer0 or Buffer1 address on the fly.
* @param hmmc: pointer to a MMC_HandleTypeDef structure.
* @param Buffer: the buffer to be changed, This parameter can be one of
* the following values: MMC_DMA_BUFFER0 or MMC_DMA_BUFFER1
* @param pDataBuffer: The new address
* @note The BUFFER0 address can be changed only when the current transfer use
* BUFFER1 and the BUFFER1 address can be changed only when the current
* transfer use BUFFER0.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MMCEx_ChangeDMABuffer(MMC_HandleTypeDef *hmmc, HAL_MMCEx_DMABuffer_MemoryTypeDef Buffer, uint32_t *pDataBuffer)
{
if(Buffer == MMC_DMA_BUFFER0)
{
/* change the buffer0 address */
hmmc->Instance->IDMABASE0 = (uint32_t)pDataBuffer;
}
else
{
/* change the memory1 address */
hmmc->Instance->IDMABASE1 = (uint32_t)pDataBuffer;
}
return HAL_OK;
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_MMC_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
