Outline ![]()
Files ![]()
loading...
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
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
/**
******************************************************************************
* @file stm32469i_discovery_sd.c
* @author MCD Application Team
* @brief This file includes the uSD card driver mounted on STM32469I-Discovery
* board.
******************************************************************************
* @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.
*
******************************************************************************
*/
/* File Info : -----------------------------------------------------------------
User NOTES
1. How To use this driver:
--------------------------
- This driver is used to drive the micro SD external card mounted on STM32469I-Discovery
board.
- This driver does not need a specific component driver for the micro SD device
to be included with.
2. Driver description:
---------------------
+ Initialization steps:
o Initialize the micro SD card using the BSP_SD_Init() function. This
function includes the MSP layer hardware resources initialization and the
SDIO interface configuration to interface with the external micro SD. It
also includes the micro SD initialization sequence.
o To check the SD card presence you can use the function BSP_SD_IsDetected() which
returns the detection status
o If SD presence detection interrupt mode is desired, you must configure the
SD detection interrupt mode by calling the function BSP_SD_ITConfig(). The interrupt
is generated as an external interrupt whenever the micro SD card is
plugged/unplugged in/from the board.
o The function BSP_SD_GetCardInfo() is used to get the micro SD card information
which is stored in the structure "HAL_SD_CardInfoTypeDef".
+ Micro SD card operations
o The micro SD card can be accessed with read/write block(s) operations once
it is ready for access. The access can be performed whether using the polling
mode by calling the functions BSP_SD_ReadBlocks()/BSP_SD_WriteBlocks(), or by DMA
transfer using the functions BSP_SD_ReadBlocks_DMA()/BSP_SD_WriteBlocks_DMA()
o The DMA transfer complete is used with interrupt mode. Once the SD transfer
is complete, the SD interrupt is handled using the function BSP_SD_IRQHandler(),
the DMA Tx/Rx transfer complete are handled using the functions
BSP_SD_DMA_Tx_IRQHandler()/BSP_SD_DMA_Rx_IRQHandler(). The corresponding user callbacks
are implemented by the user at application level.
o The SD erase block(s) is performed using the function BSP_SD_Erase() with specifying
the number of blocks to erase.
o The SD runtime status is returned when calling the function BSP_SD_GetCardState().
------------------------------------------------------------------------------*/
/* Includes ------------------------------------------------------------------*/
#include "stm32469i_discovery_sd.h"
/** @addtogroup BSP
* @{
*/
/** @addtogroup STM32469I_Discovery
* @{
*/
/** @defgroup STM32469I-Discovery_SD STM32469I Discovery SD
* @{
*/
/** @defgroup STM32469I-Discovery_SD_Private_TypesDefinitions STM32469I Discovery SD Private TypesDef
* @{
*/
/**
* @}
*/
/** @defgroup STM32469I-Discovery_SD_Private_Defines STM32469I Discovery SD Private Defines
* @{
*/
/**
* @}
*/
/** @defgroup STM32469I-Discovery_SD_Private_Macros STM32469I Discovery SD Private Macro
* @{
*/
/**
* @}
*/
/** @defgroup STM32469I-Discovery_SD_Private_Variables STM32469I Discovery SD Private Variables
* @{
*/
SD_HandleTypeDef uSdHandle;
/**
* @}
*/
/** @defgroup STM32469I-Discovery_SD_Private_FunctionPrototypes STM32469I Discovery SD Private Prototypes
* @{
*/
/**
* @}
*/
/** @defgroup STM32469I-Discovery_SD_Private_Functions STM32469I Discovery SD Private Functions
* @{
*/
/**
* @brief Initializes the SD card device.
* @retval SD status
*/
uint8_t BSP_SD_Init(void)
{
uint8_t sd_state = MSD_OK;
/* PLLSAI is dedicated to LCD periph. Do not use it to get 48MHz*/
/* uSD device interface configuration */
uSdHandle.Instance = SDIO;
uSdHandle.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING;
uSdHandle.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE;
uSdHandle.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_DISABLE;
uSdHandle.Init.BusWide = SDIO_BUS_WIDE_1B;
uSdHandle.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_ENABLE;
uSdHandle.Init.ClockDiv = SDIO_TRANSFER_CLK_DIV;
/* Msp SD Detect pin initialization */
BSP_SD_Detect_MspInit(&uSdHandle, NULL);
if(BSP_SD_IsDetected() != SD_PRESENT) /* Check if SD card is present */
{
return MSD_ERROR_SD_NOT_PRESENT;
}
/* Msp SD initialization */
BSP_SD_MspInit(&uSdHandle, NULL);
/* HAL SD initialization */
if(HAL_SD_Init(&uSdHandle) != HAL_OK)
{
sd_state = MSD_ERROR;
}
/* Configure SD Bus width */
if(sd_state == MSD_OK)
{
/* Enable wide operation */
if(HAL_SD_ConfigWideBusOperation(&uSdHandle, SDIO_BUS_WIDE_4B) != HAL_OK)
{
sd_state = MSD_ERROR;
}
else
{
sd_state = MSD_OK;
}
}
return sd_state;
}
/**
* @brief DeInitializes the SD card device.
* @retval SD status
*/
uint8_t BSP_SD_DeInit(void)
{
uint8_t sd_state = MSD_OK;
uSdHandle.Instance = SDIO;
/* HAL SD deinitialization */
if(HAL_SD_DeInit(&uSdHandle) != HAL_OK)
{
sd_state = MSD_ERROR;
}
/* Msp SD deinitialization */
uSdHandle.Instance = SDIO;
BSP_SD_MspDeInit(&uSdHandle, NULL);
return sd_state;
}
/**
* @brief Configures Interrupt mode for SD detection pin.
* @retval Returns 0
*/
uint8_t BSP_SD_ITConfig(void)
{
GPIO_InitTypeDef gpio_init_structure;
/* Configure Interrupt mode for SD detection pin */
gpio_init_structure.Pin = SD_DETECT_PIN;
gpio_init_structure.Pull = GPIO_PULLUP;
gpio_init_structure.Speed = GPIO_SPEED_FAST;
gpio_init_structure.Mode = GPIO_MODE_IT_RISING_FALLING;
HAL_GPIO_Init(SD_DETECT_GPIO_PORT, &gpio_init_structure);
/* Enable and set SD detect EXTI Interrupt to the lowest priority */
HAL_NVIC_SetPriority((IRQn_Type)(SD_DETECT_EXTI_IRQn), 0x0F, 0x00);
HAL_NVIC_EnableIRQ((IRQn_Type)(SD_DETECT_EXTI_IRQn));
return MSD_OK;
}
/**
* @brief Detects if SD card is correctly plugged in the memory slot or not.
* @retval Returns if SD is detected or not
*/
uint8_t BSP_SD_IsDetected(void)
{
__IO uint8_t status = SD_PRESENT;
/* Check SD card detect pin */
if (HAL_GPIO_ReadPin(SD_DETECT_GPIO_PORT, SD_DETECT_PIN) == GPIO_PIN_SET)
{
status = SD_NOT_PRESENT;
}
return status;
}
/**
* @brief Reads block(s) from a specified address in an SD card, in polling mode.
* @param pData: Pointer to the buffer that will contain the data to transmit
* @param ReadAddr: Address from where data is to be read
* @param NumOfBlocks: Number of SD blocks to read
* @param Timeout: Timeout for read operation
* @retval SD status
*/
uint8_t BSP_SD_ReadBlocks(uint32_t *pData, uint32_t ReadAddr, uint32_t NumOfBlocks, uint32_t Timeout)
{
if(HAL_SD_ReadBlocks(&uSdHandle, (uint8_t *)pData, ReadAddr, NumOfBlocks, Timeout) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Writes block(s) to a specified address in an SD card, in polling mode.
* @param pData: Pointer to the buffer that will contain the data to transmit
* @param WriteAddr: Address from where data is to be written
* @param NumOfBlocks: Number of SD blocks to write
* @param Timeout: Timeout for write operation
* @retval SD status
*/
uint8_t BSP_SD_WriteBlocks(uint32_t *pData, uint32_t WriteAddr, uint32_t NumOfBlocks, uint32_t Timeout)
{
if(HAL_SD_WriteBlocks(&uSdHandle, (uint8_t *)pData, WriteAddr, NumOfBlocks, Timeout) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Reads block(s) from a specified address in an SD card, in DMA mode.
* @param pData: Pointer to the buffer that will contain the data to transmit
* @param ReadAddr: Address from where data is to be read
* @param NumOfBlocks: Number of SD blocks to read
* @retval SD status
*/
uint8_t BSP_SD_ReadBlocks_DMA(uint32_t *pData, uint32_t ReadAddr, uint32_t NumOfBlocks)
{
/* Read block(s) in DMA transfer mode */
if(HAL_SD_ReadBlocks_DMA(&uSdHandle, (uint8_t *)pData, ReadAddr, NumOfBlocks) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Writes block(s) to a specified address in an SD card, in DMA mode.
* @param pData: Pointer to the buffer that will contain the data to transmit
* @param WriteAddr: Address from where data is to be written
* @param NumOfBlocks: Number of SD blocks to write
* @retval SD status
*/
uint8_t BSP_SD_WriteBlocks_DMA(uint32_t *pData, uint32_t WriteAddr, uint32_t NumOfBlocks)
{
/* Write block(s) in DMA transfer mode */
if(HAL_SD_WriteBlocks_DMA(&uSdHandle, (uint8_t *)pData, WriteAddr, NumOfBlocks) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Erases the specified memory area of the given SD card.
* @param StartAddr: Start byte address
* @param EndAddr: End byte address
* @retval SD status
*/
uint8_t BSP_SD_Erase(uint32_t StartAddr, uint32_t EndAddr)
{
if(HAL_SD_Erase(&uSdHandle, StartAddr, EndAddr) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Initializes the SD MSP.
* @param hsd: SD handle
* @param Params : pointer on additional configuration parameters, can be NULL.
*/
__weak void BSP_SD_MspInit(SD_HandleTypeDef *hsd, void *Params)
{
static DMA_HandleTypeDef dma_rx_handle;
static DMA_HandleTypeDef dma_tx_handle;
GPIO_InitTypeDef gpio_init_structure;
/* Enable SDIO clock */
__HAL_RCC_SDIO_CLK_ENABLE();
/* Enable DMA2 clocks */
__DMAx_TxRx_CLK_ENABLE();
/* Enable GPIOs clock */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
/* Common GPIO configuration */
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Pull = GPIO_PULLUP;
gpio_init_structure.Speed = GPIO_SPEED_HIGH;
gpio_init_structure.Alternate = GPIO_AF12_SDIO;
/* GPIOC configuration */
gpio_init_structure.Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12;
HAL_GPIO_Init(GPIOC, &gpio_init_structure);
/* GPIOD configuration */
gpio_init_structure.Pin = GPIO_PIN_2;
HAL_GPIO_Init(GPIOD, &gpio_init_structure);
/* NVIC configuration for SDIO interrupts */
HAL_NVIC_SetPriority(SDIO_IRQn, 0x0E, 0);
HAL_NVIC_EnableIRQ(SDIO_IRQn);
/* Configure DMA Rx parameters */
dma_rx_handle.Init.Channel = SD_DMAx_Rx_CHANNEL;
dma_rx_handle.Init.Direction = DMA_PERIPH_TO_MEMORY;
dma_rx_handle.Init.PeriphInc = DMA_PINC_DISABLE;
dma_rx_handle.Init.MemInc = DMA_MINC_ENABLE;
dma_rx_handle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
dma_rx_handle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
dma_rx_handle.Init.Mode = DMA_PFCTRL;
dma_rx_handle.Init.Priority = DMA_PRIORITY_VERY_HIGH;
dma_rx_handle.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
dma_rx_handle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
dma_rx_handle.Init.MemBurst = DMA_MBURST_INC4;
dma_rx_handle.Init.PeriphBurst = DMA_PBURST_INC4;
dma_rx_handle.Instance = SD_DMAx_Rx_STREAM;
/* Associate the DMA handle */
__HAL_LINKDMA(hsd, hdmarx, dma_rx_handle);
/* Deinitialize the stream for new transfer */
HAL_DMA_DeInit(&dma_rx_handle);
/* Configure the DMA stream */
HAL_DMA_Init(&dma_rx_handle);
/* Configure DMA Tx parameters */
dma_tx_handle.Init.Channel = SD_DMAx_Tx_CHANNEL;
dma_tx_handle.Init.Direction = DMA_MEMORY_TO_PERIPH;
dma_tx_handle.Init.PeriphInc = DMA_PINC_DISABLE;
dma_tx_handle.Init.MemInc = DMA_MINC_ENABLE;
dma_tx_handle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
dma_tx_handle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
dma_tx_handle.Init.Mode = DMA_PFCTRL;
dma_tx_handle.Init.Priority = DMA_PRIORITY_VERY_HIGH;
dma_tx_handle.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
dma_tx_handle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
dma_tx_handle.Init.MemBurst = DMA_MBURST_INC4;
dma_tx_handle.Init.PeriphBurst = DMA_PBURST_INC4;
dma_tx_handle.Instance = SD_DMAx_Tx_STREAM;
/* Associate the DMA handle */
__HAL_LINKDMA(hsd, hdmatx, dma_tx_handle);
/* Deinitialize the stream for new transfer */
HAL_DMA_DeInit(&dma_tx_handle);
/* Configure the DMA stream */
HAL_DMA_Init(&dma_tx_handle);
/* NVIC configuration for DMA transfer complete interrupt */
HAL_NVIC_SetPriority(SD_DMAx_Rx_IRQn, 0x0F, 0);
HAL_NVIC_EnableIRQ(SD_DMAx_Rx_IRQn);
/* NVIC configuration for DMA transfer complete interrupt */
HAL_NVIC_SetPriority(SD_DMAx_Tx_IRQn, 0x0F, 0);
HAL_NVIC_EnableIRQ(SD_DMAx_Tx_IRQn);
}
/**
* @brief Initializes the SD Detect pin MSP.
* @param hsd: SD handle
* @param Params : pointer on additional configuration parameters, can be NULL.
*/
__weak void BSP_SD_Detect_MspInit(SD_HandleTypeDef *hsd, void *Params)
{
GPIO_InitTypeDef gpio_init_structure;
SD_DETECT_GPIO_CLK_ENABLE();
/* GPIO configuration in input for uSD_Detect signal */
gpio_init_structure.Pin = SD_DETECT_PIN;
gpio_init_structure.Mode = GPIO_MODE_INPUT;
gpio_init_structure.Pull = GPIO_PULLUP;
gpio_init_structure.Speed = GPIO_SPEED_HIGH;
HAL_GPIO_Init(SD_DETECT_GPIO_PORT, &gpio_init_structure);
}
/**
* @brief DeInitializes the SD MSP.
* @param hsd: SD handle
* @param Params : pointer on additional configuration parameters, can be NULL.
*/
__weak void BSP_SD_MspDeInit(SD_HandleTypeDef *hsd, void *Params)
{
static DMA_HandleTypeDef dma_rx_handle;
static DMA_HandleTypeDef dma_tx_handle;
/* Disable NVIC for DMA transfer complete interrupts */
HAL_NVIC_DisableIRQ(SD_DMAx_Rx_IRQn);
HAL_NVIC_DisableIRQ(SD_DMAx_Tx_IRQn);
/* Deinitialize the stream for new transfer */
dma_rx_handle.Instance = SD_DMAx_Rx_STREAM;
HAL_DMA_DeInit(&dma_rx_handle);
/* Deinitialize the stream for new transfer */
dma_tx_handle.Instance = SD_DMAx_Tx_STREAM;
HAL_DMA_DeInit(&dma_tx_handle);
/* Disable NVIC for SDIO interrupts */
HAL_NVIC_DisableIRQ(SDIO_IRQn);
/* DeInit GPIO pins can be done in the application
(by surcharging this __weak function) */
/* Disable SDIO clock */
__HAL_RCC_SDIO_CLK_DISABLE();
/* GPOI pins clock and DMA cloks can be shut down in the applic
by surcgarging this __weak function */
}
/**
* @brief Gets the current SD card data status.
* @retval Data transfer state.
* This value can be one of the following values:
* @arg SD_TRANSFER_OK: No data transfer is acting
* @arg SD_TRANSFER_BUSY: Data transfer is acting
*/
uint8_t BSP_SD_GetCardState(void)
{
return((HAL_SD_GetCardState(&uSdHandle) == HAL_SD_CARD_TRANSFER ) ? SD_TRANSFER_OK : SD_TRANSFER_BUSY);
}
/**
* @brief Get SD information about specific SD card.
* @param CardInfo: Pointer to HAL_SD_CardInfoTypedef structure
* @retval None
*/
void BSP_SD_GetCardInfo(HAL_SD_CardInfoTypeDef *CardInfo)
{
/* Get SD card Information */
HAL_SD_GetCardInfo(&uSdHandle, CardInfo);
}
/**
* @brief SD Abort callbacks
* @param hsd: SD handle
* @retval None
*/
void HAL_SD_AbortCallback(SD_HandleTypeDef *hsd)
{
BSP_SD_AbortCallback();
}
/**
* @brief Tx Transfer completed callbacks
* @param hsd: SD handle
* @retval None
*/
void HAL_SD_TxCpltCallback(SD_HandleTypeDef *hsd)
{
BSP_SD_WriteCpltCallback();
}
/**
* @brief Rx Transfer completed callbacks
* @param hsd: SD handle
* @retval None
*/
void HAL_SD_RxCpltCallback(SD_HandleTypeDef *hsd)
{
BSP_SD_ReadCpltCallback();
}
/**
* @brief BSP SD Abort callbacks
* @retval None
*/
__weak void BSP_SD_AbortCallback(void)
{
}
/**
* @brief BSP Tx Transfer completed callbacks
* @retval None
*/
__weak void BSP_SD_WriteCpltCallback(void)
{
}
/**
* @brief BSP Rx Transfer completed callbacks
* @retval None
*/
__weak void BSP_SD_ReadCpltCallback(void)
{
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/