WILLY BAYOT / stm32_adafruit

ADAFRUIT CLD & SD lib

Dependents:   TDEMNucleo

sd_diskio.c@0:4db361f2e6d5, 2015-01-04 (annotated)

Committer:
willybayot
Date:
Sun Jan 04 13:25:59 2015 +0000
Revision:
0:4db361f2e6d5
ADAFRUIT revision

Who changed what in which revision?

UserRevisionLine numberNew contents of line
willybayot 0:4db361f2e6d5 1 /**
willybayot 0:4db361f2e6d5 2 ******************************************************************************
willybayot 0:4db361f2e6d5 3 * @file sd_diskio.c
willybayot 0:4db361f2e6d5 4 * @author MCD Application Team
willybayot 0:4db361f2e6d5 5 * @version V1.1.0
willybayot 0:4db361f2e6d5 6 * @date 22-April-2014
willybayot 0:4db361f2e6d5 7 * @brief SD Disk I/O driver
willybayot 0:4db361f2e6d5 8 ******************************************************************************
willybayot 0:4db361f2e6d5 9 * @attention
willybayot 0:4db361f2e6d5 10 *
willybayot 0:4db361f2e6d5 11 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
willybayot 0:4db361f2e6d5 12 *
willybayot 0:4db361f2e6d5 13 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
willybayot 0:4db361f2e6d5 14 * You may not use this file except in compliance with the License.
willybayot 0:4db361f2e6d5 15 * You may obtain a copy of the License at:
willybayot 0:4db361f2e6d5 16 *
willybayot 0:4db361f2e6d5 17 * http://www.st.com/software_license_agreement_liberty_v2
willybayot 0:4db361f2e6d5 18 *
willybayot 0:4db361f2e6d5 19 * Unless required by applicable law or agreed to in writing, software
willybayot 0:4db361f2e6d5 20 * distributed under the License is distributed on an "AS IS" BASIS,
willybayot 0:4db361f2e6d5 21 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
willybayot 0:4db361f2e6d5 22 * See the License for the specific language governing permissions and
willybayot 0:4db361f2e6d5 23 * limitations under the License.
willybayot 0:4db361f2e6d5 24 *
willybayot 0:4db361f2e6d5 25 ******************************************************************************
willybayot 0:4db361f2e6d5 26 */
willybayot 0:4db361f2e6d5 27
willybayot 0:4db361f2e6d5 28 /* Includes ------------------------------------------------------------------*/
willybayot 0:4db361f2e6d5 29 #include <string.h>
willybayot 0:4db361f2e6d5 30 #include "ff_gen_drv.h"
willybayot 0:4db361f2e6d5 31
willybayot 0:4db361f2e6d5 32 /* Private typedef -----------------------------------------------------------*/
willybayot 0:4db361f2e6d5 33 /* Private define ------------------------------------------------------------*/
willybayot 0:4db361f2e6d5 34 /* Block Size in Bytes */
willybayot 0:4db361f2e6d5 35 #define BLOCK_SIZE 512
willybayot 0:4db361f2e6d5 36
willybayot 0:4db361f2e6d5 37 /* Private variables ---------------------------------------------------------*/
willybayot 0:4db361f2e6d5 38 /* Disk status */
willybayot 0:4db361f2e6d5 39 static volatile DSTATUS Stat = STA_NOINIT;
willybayot 0:4db361f2e6d5 40
willybayot 0:4db361f2e6d5 41 /* Private function prototypes -----------------------------------------------*/
willybayot 0:4db361f2e6d5 42 DSTATUS SD_initialize (void);
willybayot 0:4db361f2e6d5 43 DSTATUS SD_status (void);
willybayot 0:4db361f2e6d5 44 DRESULT SD_read (BYTE*, DWORD, BYTE);
willybayot 0:4db361f2e6d5 45 #if _USE_WRITE == 1
willybayot 0:4db361f2e6d5 46 DRESULT SD_write (const BYTE*, DWORD, BYTE);
willybayot 0:4db361f2e6d5 47 #endif /* _USE_WRITE == 1 */
willybayot 0:4db361f2e6d5 48 #if _USE_IOCTL == 1
willybayot 0:4db361f2e6d5 49 DRESULT SD_ioctl (BYTE, void*);
willybayot 0:4db361f2e6d5 50 #endif /* _USE_IOCTL == 1 */
willybayot 0:4db361f2e6d5 51
willybayot 0:4db361f2e6d5 52 Diskio_drvTypeDef SD_Driver =
willybayot 0:4db361f2e6d5 53 {
willybayot 0:4db361f2e6d5 54 SD_initialize,
willybayot 0:4db361f2e6d5 55 SD_status,
willybayot 0:4db361f2e6d5 56 SD_read,
willybayot 0:4db361f2e6d5 57 #if _USE_WRITE == 1
willybayot 0:4db361f2e6d5 58 SD_write,
willybayot 0:4db361f2e6d5 59 #endif /* _USE_WRITE == 1 */
willybayot 0:4db361f2e6d5 60
willybayot 0:4db361f2e6d5 61 #if _USE_IOCTL == 1
willybayot 0:4db361f2e6d5 62 SD_ioctl,
willybayot 0:4db361f2e6d5 63 #endif /* _USE_IOCTL == 1 */
willybayot 0:4db361f2e6d5 64 };
willybayot 0:4db361f2e6d5 65
willybayot 0:4db361f2e6d5 66 /* Private functions ---------------------------------------------------------*/
willybayot 0:4db361f2e6d5 67
willybayot 0:4db361f2e6d5 68 /**
willybayot 0:4db361f2e6d5 69 * @brief Initializes a Drive
willybayot 0:4db361f2e6d5 70 * @param None
willybayot 0:4db361f2e6d5 71 * @retval DSTATUS: Operation status
willybayot 0:4db361f2e6d5 72 */
willybayot 0:4db361f2e6d5 73 DSTATUS SD_initialize(void)
willybayot 0:4db361f2e6d5 74 {
willybayot 0:4db361f2e6d5 75 Stat = STA_NOINIT;
willybayot 0:4db361f2e6d5 76
willybayot 0:4db361f2e6d5 77 /* Configure the uSD device */
willybayot 0:4db361f2e6d5 78 if(BSP_SD_Init() == MSD_OK)
willybayot 0:4db361f2e6d5 79 {
willybayot 0:4db361f2e6d5 80 Stat &= ~STA_NOINIT;
willybayot 0:4db361f2e6d5 81 }
willybayot 0:4db361f2e6d5 82
willybayot 0:4db361f2e6d5 83 return Stat;
willybayot 0:4db361f2e6d5 84 }
willybayot 0:4db361f2e6d5 85
willybayot 0:4db361f2e6d5 86 /**
willybayot 0:4db361f2e6d5 87 * @brief Gets Disk Status
willybayot 0:4db361f2e6d5 88 * @param None
willybayot 0:4db361f2e6d5 89 * @retval DSTATUS: Operation status
willybayot 0:4db361f2e6d5 90 */
willybayot 0:4db361f2e6d5 91 DSTATUS SD_status(void)
willybayot 0:4db361f2e6d5 92 {
willybayot 0:4db361f2e6d5 93 Stat = STA_NOINIT;
willybayot 0:4db361f2e6d5 94
willybayot 0:4db361f2e6d5 95 if(BSP_SD_GetStatus() == MSD_OK)
willybayot 0:4db361f2e6d5 96 {
willybayot 0:4db361f2e6d5 97 Stat &= ~STA_NOINIT;
willybayot 0:4db361f2e6d5 98 }
willybayot 0:4db361f2e6d5 99
willybayot 0:4db361f2e6d5 100 return Stat;
willybayot 0:4db361f2e6d5 101 }
willybayot 0:4db361f2e6d5 102
willybayot 0:4db361f2e6d5 103 /**
willybayot 0:4db361f2e6d5 104 * @brief Reads Sector(s)
willybayot 0:4db361f2e6d5 105 * @param *buff: Data buffer to store read data
willybayot 0:4db361f2e6d5 106 * @param sector: Sector address (LBA)
willybayot 0:4db361f2e6d5 107 * @param count: Number of sectors to read (1..128)
willybayot 0:4db361f2e6d5 108 * @retval DRESULT: Operation result
willybayot 0:4db361f2e6d5 109 */
willybayot 0:4db361f2e6d5 110 DRESULT SD_read(BYTE *buff, DWORD sector, BYTE count)
willybayot 0:4db361f2e6d5 111 {
willybayot 0:4db361f2e6d5 112 DRESULT res = RES_OK;
willybayot 0:4db361f2e6d5 113
willybayot 0:4db361f2e6d5 114 if(BSP_SD_ReadBlocks((uint32_t*)buff,
willybayot 0:4db361f2e6d5 115 (uint64_t) (sector * BLOCK_SIZE),
willybayot 0:4db361f2e6d5 116 BLOCK_SIZE,
willybayot 0:4db361f2e6d5 117 count) != MSD_OK)
willybayot 0:4db361f2e6d5 118 {
willybayot 0:4db361f2e6d5 119 res = RES_ERROR;
willybayot 0:4db361f2e6d5 120 }
willybayot 0:4db361f2e6d5 121
willybayot 0:4db361f2e6d5 122 return res;
willybayot 0:4db361f2e6d5 123 }
willybayot 0:4db361f2e6d5 124
willybayot 0:4db361f2e6d5 125 /**
willybayot 0:4db361f2e6d5 126 * @brief Writes Sector(s)
willybayot 0:4db361f2e6d5 127 * @param *buff: Data to be written
willybayot 0:4db361f2e6d5 128 * @param sector: Sector address (LBA)
willybayot 0:4db361f2e6d5 129 * @param count: Number of sectors to write (1..128)
willybayot 0:4db361f2e6d5 130 * @retval DRESULT: Operation result
willybayot 0:4db361f2e6d5 131 */
willybayot 0:4db361f2e6d5 132 #if _USE_WRITE == 1
willybayot 0:4db361f2e6d5 133 DRESULT SD_write(const BYTE *buff, DWORD sector, BYTE count)
willybayot 0:4db361f2e6d5 134 {
willybayot 0:4db361f2e6d5 135 DRESULT res = RES_OK;
willybayot 0:4db361f2e6d5 136
willybayot 0:4db361f2e6d5 137 if(BSP_SD_WriteBlocks((uint32_t*)buff,
willybayot 0:4db361f2e6d5 138 (uint64_t)(sector * BLOCK_SIZE),
willybayot 0:4db361f2e6d5 139 BLOCK_SIZE, count) != MSD_OK)
willybayot 0:4db361f2e6d5 140 {
willybayot 0:4db361f2e6d5 141 res = RES_ERROR;
willybayot 0:4db361f2e6d5 142 }
willybayot 0:4db361f2e6d5 143
willybayot 0:4db361f2e6d5 144 return res;
willybayot 0:4db361f2e6d5 145 }
willybayot 0:4db361f2e6d5 146 #endif /* _USE_WRITE == 1 */
willybayot 0:4db361f2e6d5 147
willybayot 0:4db361f2e6d5 148 /**
willybayot 0:4db361f2e6d5 149 * @brief I/O control operation
willybayot 0:4db361f2e6d5 150 * @param cmd: Control code
willybayot 0:4db361f2e6d5 151 * @param *buff: Buffer to send/receive control data
willybayot 0:4db361f2e6d5 152 * @retval DRESULT: Operation result
willybayot 0:4db361f2e6d5 153 */
willybayot 0:4db361f2e6d5 154 #if _USE_IOCTL == 1
willybayot 0:4db361f2e6d5 155 DRESULT SD_ioctl(BYTE cmd, void *buff)
willybayot 0:4db361f2e6d5 156 {
willybayot 0:4db361f2e6d5 157 DRESULT res = RES_ERROR;
willybayot 0:4db361f2e6d5 158 SD_CardInfo CardInfo;
willybayot 0:4db361f2e6d5 159
willybayot 0:4db361f2e6d5 160 if (Stat & STA_NOINIT) return RES_NOTRDY;
willybayot 0:4db361f2e6d5 161
willybayot 0:4db361f2e6d5 162 switch (cmd)
willybayot 0:4db361f2e6d5 163 {
willybayot 0:4db361f2e6d5 164 /* Make sure that no pending write process */
willybayot 0:4db361f2e6d5 165 case CTRL_SYNC :
willybayot 0:4db361f2e6d5 166 res = RES_OK;
willybayot 0:4db361f2e6d5 167 break;
willybayot 0:4db361f2e6d5 168
willybayot 0:4db361f2e6d5 169 /* Get number of sectors on the disk (DWORD) */
willybayot 0:4db361f2e6d5 170 case GET_SECTOR_COUNT :
willybayot 0:4db361f2e6d5 171 BSP_SD_GetCardInfo(&CardInfo);
willybayot 0:4db361f2e6d5 172 *(DWORD*)buff = CardInfo.CardCapacity / BLOCK_SIZE;
willybayot 0:4db361f2e6d5 173 res = RES_OK;
willybayot 0:4db361f2e6d5 174 break;
willybayot 0:4db361f2e6d5 175
willybayot 0:4db361f2e6d5 176 /* Get R/W sector size (WORD) */
willybayot 0:4db361f2e6d5 177 case GET_SECTOR_SIZE :
willybayot 0:4db361f2e6d5 178 *(WORD*)buff = BLOCK_SIZE;
willybayot 0:4db361f2e6d5 179 res = RES_OK;
willybayot 0:4db361f2e6d5 180 break;
willybayot 0:4db361f2e6d5 181
willybayot 0:4db361f2e6d5 182 /* Get erase block size in unit of sector (DWORD) */
willybayot 0:4db361f2e6d5 183 case GET_BLOCK_SIZE :
willybayot 0:4db361f2e6d5 184 *(DWORD*)buff = BLOCK_SIZE;
willybayot 0:4db361f2e6d5 185 break;
willybayot 0:4db361f2e6d5 186
willybayot 0:4db361f2e6d5 187 default:
willybayot 0:4db361f2e6d5 188 res = RES_PARERR;
willybayot 0:4db361f2e6d5 189 }
willybayot 0:4db361f2e6d5 190
willybayot 0:4db361f2e6d5 191 return res;
willybayot 0:4db361f2e6d5 192 }
willybayot 0:4db361f2e6d5 193 #endif /* _USE_IOCTL == 1 */
willybayot 0:4db361f2e6d5 194
willybayot 0:4db361f2e6d5 195 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
willybayot 0:4db361f2e6d5 196