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https://github.com/DarkFlippers/unleashed-firmware
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1020 lines
35 KiB
C
1020 lines
35 KiB
C
/**
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******************************************************************************
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* @file stm32_adafruit_sd.c
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* @author MCD Application Team
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* @version V3.0.0
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* @date 23-December-2016
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* @brief This file provides a set of functions needed to manage the SD card
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* mounted on the Adafruit 1.8" TFT LCD shield (reference ID 802),
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* that is used with the STM32 Nucleo board through SPI interface.
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* It implements a high level communication layer for read and write
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* from/to this memory. The needed STM32XXxx hardware resources (SPI and
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* GPIO) are defined in stm32XXxx_nucleo.h file, and the initialization is
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* performed in SD_IO_Init() function declared in stm32XXxx_nucleo.c
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* file.
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* You can easily tailor this driver to any other development board,
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* by just adapting the defines for hardware resources and
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* SD_IO_Init() function.
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*
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* +-------------------------------------------------------+
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* | Pin assignment |
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* +-------------------------+---------------+-------------+
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* | STM32XXxx SPI Pins | SD | Pin |
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* +-------------------------+---------------+-------------+
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* | SD_SPI_CS_PIN | ChipSelect | 1 |
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* | SD_SPI_MOSI_PIN / MOSI | DataIn | 2 |
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* | | GND | 3 (0 V) |
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* | | VDD | 4 (3.3 V)|
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* | SD_SPI_SCK_PIN / SCLK | Clock | 5 |
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* | | GND | 6 (0 V) |
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* | SD_SPI_MISO_PIN / MISO | DataOut | 7 |
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* +-------------------------+---------------+-------------+
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* File Info : -----------------------------------------------------------------
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User NOTES
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1. How to use this driver:
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--------------------------
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- This driver does not need a specific component driver for the micro SD device
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to be included with.
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2. Driver description:
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---------------------
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+ Initialization steps:
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o Initialize the micro SD card using the BSP_SD_Init() function.
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o Checking the SD card presence is not managed because SD detection pin is
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not physically mapped on the Adafruit shield.
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o The function BSP_SD_GetCardInfo() is used to get the micro SD card information
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which is stored in the structure "SD_CardInfo".
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+ Micro SD card operations
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o The micro SD card can be accessed with read/write block(s) operations once
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it is ready for access. The access can be performed in polling
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mode by calling the functions BSP_SD_ReadBlocks()/BSP_SD_WriteBlocks()
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o The SD erase block(s) is performed using the function BSP_SD_Erase() with
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specifying the number of blocks to erase.
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o The SD runtime status is returned when calling the function BSP_SD_GetStatus().
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------------------------------------------------------------------------------*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32_adafruit_sd.h"
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#include "stdlib.h"
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#include "string.h"
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#include "stdio.h"
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#include "spi.h"
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#include "api-hal-spi.h"
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/** @addtogroup BSP
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* @{
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*/
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/** @addtogroup STM32_ADAFRUIT
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* @{
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*/
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/** @defgroup STM32_ADAFRUIT_SD
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/** @defgroup STM32_ADAFRUIT_SD_Private_Types_Definitions
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* @{
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*/
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typedef struct {
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uint8_t r1;
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uint8_t r2;
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uint8_t r3;
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uint8_t r4;
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uint8_t r5;
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} SD_CmdAnswer_typedef;
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/**
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* @}
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*/
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/* Private define ------------------------------------------------------------*/
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/** @defgroup STM32_ADAFRUIT_SD_Private_Defines
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* @{
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*/
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#define SD_DUMMY_BYTE 0xFF
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#define SD_MAX_FRAME_LENGTH 17 /* Lenght = 16 + 1 */
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#define SD_CMD_LENGTH 6
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#define SD_MAX_TRY 100 /* Number of try */
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#define SD_CSD_STRUCT_V1 0x2 /* CSD struct version V1 */
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#define SD_CSD_STRUCT_V2 0x1 /* CSD struct version V2 */
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/**
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* @brief SD ansewer format
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*/
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typedef enum {
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SD_ANSWER_R1_EXPECTED,
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SD_ANSWER_R1B_EXPECTED,
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SD_ANSWER_R2_EXPECTED,
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SD_ANSWER_R3_EXPECTED,
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SD_ANSWER_R4R5_EXPECTED,
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SD_ANSWER_R7_EXPECTED,
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} SD_Answer_type;
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/**
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* @brief Start Data tokens:
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* Tokens (necessary because at nop/idle (and CS active) only 0xff is
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* on the data/command line)
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*/
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#define SD_TOKEN_START_DATA_SINGLE_BLOCK_READ \
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0xFE /* Data token start byte, Start Single Block Read */
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#define SD_TOKEN_START_DATA_MULTIPLE_BLOCK_READ \
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0xFE /* Data token start byte, Start Multiple Block Read */
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#define SD_TOKEN_START_DATA_SINGLE_BLOCK_WRITE \
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0xFE /* Data token start byte, Start Single Block Write */
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#define SD_TOKEN_START_DATA_MULTIPLE_BLOCK_WRITE \
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0xFD /* Data token start byte, Start Multiple Block Write */
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#define SD_TOKEN_STOP_DATA_MULTIPLE_BLOCK_WRITE \
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0xFD /* Data toke stop byte, Stop Multiple Block Write */
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/**
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* @brief Commands: CMDxx = CMD-number | 0x40
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*/
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#define SD_CMD_GO_IDLE_STATE 0 /* CMD0 = 0x40 */
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#define SD_CMD_SEND_OP_COND 1 /* CMD1 = 0x41 */
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#define SD_CMD_SEND_IF_COND 8 /* CMD8 = 0x48 */
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#define SD_CMD_SEND_CSD 9 /* CMD9 = 0x49 */
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#define SD_CMD_SEND_CID 10 /* CMD10 = 0x4A */
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#define SD_CMD_STOP_TRANSMISSION 12 /* CMD12 = 0x4C */
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#define SD_CMD_SEND_STATUS 13 /* CMD13 = 0x4D */
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#define SD_CMD_SET_BLOCKLEN 16 /* CMD16 = 0x50 */
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#define SD_CMD_READ_SINGLE_BLOCK 17 /* CMD17 = 0x51 */
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#define SD_CMD_READ_MULT_BLOCK 18 /* CMD18 = 0x52 */
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#define SD_CMD_SET_BLOCK_COUNT 23 /* CMD23 = 0x57 */
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#define SD_CMD_WRITE_SINGLE_BLOCK 24 /* CMD24 = 0x58 */
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#define SD_CMD_WRITE_MULT_BLOCK 25 /* CMD25 = 0x59 */
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#define SD_CMD_PROG_CSD 27 /* CMD27 = 0x5B */
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#define SD_CMD_SET_WRITE_PROT 28 /* CMD28 = 0x5C */
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#define SD_CMD_CLR_WRITE_PROT 29 /* CMD29 = 0x5D */
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#define SD_CMD_SEND_WRITE_PROT 30 /* CMD30 = 0x5E */
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#define SD_CMD_SD_ERASE_GRP_START 32 /* CMD32 = 0x60 */
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#define SD_CMD_SD_ERASE_GRP_END 33 /* CMD33 = 0x61 */
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#define SD_CMD_UNTAG_SECTOR 34 /* CMD34 = 0x62 */
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#define SD_CMD_ERASE_GRP_START 35 /* CMD35 = 0x63 */
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#define SD_CMD_ERASE_GRP_END 36 /* CMD36 = 0x64 */
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#define SD_CMD_UNTAG_ERASE_GROUP 37 /* CMD37 = 0x65 */
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#define SD_CMD_ERASE 38 /* CMD38 = 0x66 */
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#define SD_CMD_SD_APP_OP_COND 41 /* CMD41 = 0x69 */
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#define SD_CMD_APP_CMD 55 /* CMD55 = 0x77 */
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#define SD_CMD_READ_OCR 58 /* CMD55 = 0x79 */
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/**
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* @brief SD reponses and error flags
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*/
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typedef enum {
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/* R1 answer value */
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SD_R1_NO_ERROR = (0x00),
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SD_R1_IN_IDLE_STATE = (0x01),
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SD_R1_ERASE_RESET = (0x02),
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SD_R1_ILLEGAL_COMMAND = (0x04),
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SD_R1_COM_CRC_ERROR = (0x08),
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SD_R1_ERASE_SEQUENCE_ERROR = (0x10),
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SD_R1_ADDRESS_ERROR = (0x20),
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SD_R1_PARAMETER_ERROR = (0x40),
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/* R2 answer value */
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SD_R2_NO_ERROR = 0x00,
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SD_R2_CARD_LOCKED = 0x01,
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SD_R2_LOCKUNLOCK_ERROR = 0x02,
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SD_R2_ERROR = 0x04,
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SD_R2_CC_ERROR = 0x08,
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SD_R2_CARD_ECC_FAILED = 0x10,
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SD_R2_WP_VIOLATION = 0x20,
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SD_R2_ERASE_PARAM = 0x40,
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SD_R2_OUTOFRANGE = 0x80,
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/**
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* @brief Data response error
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*/
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SD_DATA_OK = (0x05),
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SD_DATA_CRC_ERROR = (0x0B),
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SD_DATA_WRITE_ERROR = (0x0D),
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SD_DATA_OTHER_ERROR = (0xFF)
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} SD_Error;
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/**
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* @}
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*/
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/* Private macro -------------------------------------------------------------*/
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/** @defgroup STM32_ADAFRUIT_SD_Private_Macros
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* @{
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*/
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/**
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* @}
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*/
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/* Private variables ---------------------------------------------------------*/
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/** @defgroup STM32_ADAFRUIT_SD_Private_Variables
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* @{
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*/
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__IO uint8_t SdStatus = SD_NOT_PRESENT;
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/* flag_SDHC :
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0 : Standard capacity
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1 : High capacity
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*/
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uint16_t flag_SDHC = 0;
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/**
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* @}
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*/
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/* Private function prototypes -----------------------------------------------*/
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static uint8_t SD_GetCIDRegister(SD_CID* Cid);
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static uint8_t SD_GetCSDRegister(SD_CSD* Csd);
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static uint8_t SD_GetDataResponse(void);
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static uint8_t SD_GoIdleState(void);
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static SD_CmdAnswer_typedef SD_SendCmd(uint8_t Cmd, uint32_t Arg, uint8_t Crc, uint8_t Answer);
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static uint8_t SD_WaitData(uint8_t data);
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static uint8_t SD_ReadData(void);
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/** @defgroup STM32_ADAFRUIT_SD_Private_Function_Prototypes
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* @{
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*/
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/**
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* @}
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*/
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/* Private functions ---------------------------------------------------------*/
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/** @defgroup STM32_ADAFRUIT_SD_Private_Functions
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* @{
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*/
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/**
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* @brief Initializes the SD/SD communication.
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* @param None
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* @retval The SD Response:
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* - MSD_ERROR: Sequence failed
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* - MSD_OK: Sequence succeed
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*/
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uint8_t BSP_SD_Init(void) {
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// TODO: SPI manager
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api_hal_spi_lock(&SPI_SD_HANDLE);
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/* Init to maximum slow speed */
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SD_SPI_Reconfigure_Slow();
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/* Configure IO functionalities for SD pin */
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SD_IO_Init();
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/* SD detection pin is not physically mapped on the Adafruit shield */
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SdStatus = SD_PRESENT;
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uint8_t res = SD_GoIdleState();
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/* Init to maximum fastest speed */
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SD_SPI_Reconfigure_Fast();
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// TODO: SPI manager
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api_hal_spi_unlock(&SPI_SD_HANDLE);
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/* SD initialized and set to SPI mode properly */
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return res;
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}
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/**
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* @brief Returns information about specific card.
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* @param pCardInfo: Pointer to a SD_CardInfo structure that contains all SD
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* card information.
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* @retval The SD Response:
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* - MSD_ERROR: Sequence failed
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* - MSD_OK: Sequence succeed
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*/
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uint8_t BSP_SD_GetCardInfo(SD_CardInfo* pCardInfo) {
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uint8_t status;
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status = SD_GetCSDRegister(&(pCardInfo->Csd));
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status |= SD_GetCIDRegister(&(pCardInfo->Cid));
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if(flag_SDHC == 1) {
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pCardInfo->LogBlockSize = 512;
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pCardInfo->CardBlockSize = 512;
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pCardInfo->CardCapacity = ((uint64_t)pCardInfo->Csd.version.v2.DeviceSize + 1UL) * 1024UL *
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(uint64_t)pCardInfo->LogBlockSize;
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pCardInfo->LogBlockNbr = (pCardInfo->CardCapacity) / (pCardInfo->LogBlockSize);
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} else {
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pCardInfo->CardCapacity = (pCardInfo->Csd.version.v1.DeviceSize + 1);
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pCardInfo->CardCapacity *= (1 << (pCardInfo->Csd.version.v1.DeviceSizeMul + 2));
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pCardInfo->LogBlockSize = 512;
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pCardInfo->CardBlockSize = 1 << (pCardInfo->Csd.RdBlockLen);
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pCardInfo->CardCapacity *= pCardInfo->CardBlockSize;
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pCardInfo->LogBlockNbr = (pCardInfo->CardCapacity) / (pCardInfo->LogBlockSize);
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}
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return status;
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}
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/**
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* @brief Reads block(s) from a specified address in the SD card, in polling mode.
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* @param pData: Pointer to the buffer that will contain the data to transmit
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* @param ReadAddr: Address from where data is to be read. The address is counted
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* in blocks of 512bytes
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* @param NumOfBlocks: Number of SD blocks to read
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* @param Timeout: This parameter is used for compatibility with BSP implementation
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* @retval SD status
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*/
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uint8_t
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BSP_SD_ReadBlocks(uint32_t* pData, uint32_t ReadAddr, uint32_t NumOfBlocks, uint32_t Timeout) {
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uint32_t offset = 0;
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uint8_t retr = BSP_SD_ERROR;
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SD_CmdAnswer_typedef response;
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uint16_t BlockSize = 512;
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uint8_t* ptr = NULL;
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// uint8_t ptr[512];
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/* Send CMD16 (SD_CMD_SET_BLOCKLEN) to set the size of the block and
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Check if the SD acknowledged the set block length command: R1 response (0x00: no errors) */
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response = SD_SendCmd(SD_CMD_SET_BLOCKLEN, BlockSize, 0xFF, SD_ANSWER_R1_EXPECTED);
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SD_IO_CSState(1);
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SD_IO_WriteByte(SD_DUMMY_BYTE);
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if(response.r1 != SD_R1_NO_ERROR) {
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goto error;
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}
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ptr = malloc(sizeof(uint8_t) * BlockSize);
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if(ptr == NULL) {
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goto error;
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}
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memset(ptr, SD_DUMMY_BYTE, sizeof(uint8_t) * BlockSize);
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/* Data transfer */
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while(NumOfBlocks--) {
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/* Send CMD17 (SD_CMD_READ_SINGLE_BLOCK) to read one block */
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/* Check if the SD acknowledged the read block command: R1 response (0x00: no errors) */
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response = SD_SendCmd(
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SD_CMD_READ_SINGLE_BLOCK,
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(ReadAddr + offset) * (flag_SDHC == 1 ? 1 : BlockSize),
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0xFF,
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SD_ANSWER_R1_EXPECTED);
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if(response.r1 != SD_R1_NO_ERROR) {
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goto error;
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}
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|
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/* Now look for the data token to signify the start of the data */
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if(SD_WaitData(SD_TOKEN_START_DATA_SINGLE_BLOCK_READ) == BSP_SD_OK) {
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/* Read the SD block data : read NumByteToRead data */
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SD_IO_WriteReadData(ptr, (uint8_t*)pData + offset, BlockSize);
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|
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/* Set next read address*/
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offset += BlockSize;
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/* get CRC bytes (not really needed by us, but required by SD) */
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SD_IO_WriteByte(SD_DUMMY_BYTE);
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SD_IO_WriteByte(SD_DUMMY_BYTE);
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} else {
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goto error;
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}
|
|
|
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/* End the command data read cycle */
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SD_IO_CSState(1);
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SD_IO_WriteByte(SD_DUMMY_BYTE);
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}
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|
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retr = BSP_SD_OK;
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error:
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/* Send dummy byte: 8 Clock pulses of delay */
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SD_IO_CSState(1);
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SD_IO_WriteByte(SD_DUMMY_BYTE);
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if(ptr != NULL) free(ptr);
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|
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/* Return the reponse */
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return retr;
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}
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|
|
|
/**
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* @brief Writes block(s) to a specified address in the SD card, in polling mode.
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* @param pData: Pointer to the buffer that will contain the data to transmit
|
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* @param WriteAddr: Address from where data is to be written. The address is counted
|
|
* in blocks of 512bytes
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* @param NumOfBlocks: Number of SD blocks to write
|
|
* @param Timeout: This parameter is used for compatibility with BSP implementation
|
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* @retval SD status
|
|
*/
|
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uint8_t
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BSP_SD_WriteBlocks(uint32_t* pData, uint32_t WriteAddr, uint32_t NumOfBlocks, uint32_t Timeout) {
|
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uint32_t offset = 0;
|
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uint8_t retr = BSP_SD_ERROR;
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uint8_t* ptr = NULL;
|
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SD_CmdAnswer_typedef response;
|
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uint16_t BlockSize = 512;
|
|
|
|
/* Send CMD16 (SD_CMD_SET_BLOCKLEN) to set the size of the block and
|
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Check if the SD acknowledged the set block length command: R1 response (0x00: no errors) */
|
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response = SD_SendCmd(SD_CMD_SET_BLOCKLEN, BlockSize, 0xFF, SD_ANSWER_R1_EXPECTED);
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SD_IO_CSState(1);
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SD_IO_WriteByte(SD_DUMMY_BYTE);
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if(response.r1 != SD_R1_NO_ERROR) {
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goto error;
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|
}
|
|
|
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ptr = malloc(sizeof(uint8_t) * BlockSize);
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if(ptr == NULL) {
|
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goto error;
|
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}
|
|
|
|
/* Data transfer */
|
|
while(NumOfBlocks--) {
|
|
/* Send CMD24 (SD_CMD_WRITE_SINGLE_BLOCK) to write blocks and
|
|
Check if the SD acknowledged the write block command: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(
|
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SD_CMD_WRITE_SINGLE_BLOCK,
|
|
(WriteAddr + offset) * (flag_SDHC == 1 ? 1 : BlockSize),
|
|
0xFF,
|
|
SD_ANSWER_R1_EXPECTED);
|
|
if(response.r1 != SD_R1_NO_ERROR) {
|
|
goto error;
|
|
}
|
|
|
|
/* Send dummy byte for NWR timing : one byte between CMDWRITE and TOKEN */
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Send the data token to signify the start of the data */
|
|
SD_IO_WriteByte(SD_TOKEN_START_DATA_SINGLE_BLOCK_WRITE);
|
|
|
|
/* Write the block data to SD */
|
|
SD_IO_WriteReadData((uint8_t*)pData + offset, ptr, BlockSize);
|
|
|
|
/* Set next write address */
|
|
offset += BlockSize;
|
|
|
|
/* Put CRC bytes (not really needed by us, but required by SD) */
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Read data response */
|
|
if(SD_GetDataResponse() != SD_DATA_OK) {
|
|
/* Set response value to failure */
|
|
goto error;
|
|
}
|
|
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
}
|
|
retr = BSP_SD_OK;
|
|
|
|
error:
|
|
if(ptr != NULL) free(ptr);
|
|
/* Send dummy byte: 8 Clock pulses of delay */
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Return the reponse */
|
|
return retr;
|
|
}
|
|
|
|
/**
|
|
* @brief Erases the specified memory area of the given SD card.
|
|
* @param StartAddr: Start address in Blocks (Size of a block is 512bytes)
|
|
* @param EndAddr: End address in Blocks (Size of a block is 512bytes)
|
|
* @retval SD status
|
|
*/
|
|
uint8_t BSP_SD_Erase(uint32_t StartAddr, uint32_t EndAddr) {
|
|
uint8_t retr = BSP_SD_ERROR;
|
|
SD_CmdAnswer_typedef response;
|
|
uint16_t BlockSize = 512;
|
|
|
|
/* Send CMD32 (Erase group start) and check if the SD acknowledged the erase command: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(
|
|
SD_CMD_SD_ERASE_GRP_START,
|
|
(StartAddr) * (flag_SDHC == 1 ? 1 : BlockSize),
|
|
0xFF,
|
|
SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
if(response.r1 == SD_R1_NO_ERROR) {
|
|
/* Send CMD33 (Erase group end) and Check if the SD acknowledged the erase command: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(
|
|
SD_CMD_SD_ERASE_GRP_END,
|
|
(EndAddr * 512) * (flag_SDHC == 1 ? 1 : BlockSize),
|
|
0xFF,
|
|
SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
if(response.r1 == SD_R1_NO_ERROR) {
|
|
/* Send CMD38 (Erase) and Check if the SD acknowledged the erase command: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(SD_CMD_ERASE, 0, 0xFF, SD_ANSWER_R1B_EXPECTED);
|
|
if(response.r1 == SD_R1_NO_ERROR) {
|
|
retr = BSP_SD_OK;
|
|
}
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
}
|
|
}
|
|
|
|
/* Return the reponse */
|
|
return retr;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the SD status.
|
|
* @param None
|
|
* @retval The SD status.
|
|
*/
|
|
uint8_t BSP_SD_GetCardState(void) {
|
|
SD_CmdAnswer_typedef retr;
|
|
|
|
/* Send CMD13 (SD_SEND_STATUS) to get SD status */
|
|
retr = SD_SendCmd(SD_CMD_SEND_STATUS, 0, 0xFF, SD_ANSWER_R2_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Find SD status according to card state */
|
|
if((retr.r1 == SD_R1_NO_ERROR) && (retr.r2 == SD_R2_NO_ERROR)) {
|
|
return BSP_SD_OK;
|
|
}
|
|
|
|
return BSP_SD_ERROR;
|
|
}
|
|
|
|
/**
|
|
* @brief Reads the SD card SCD register.
|
|
* Reading the contents of the CSD register in SPI mode is a simple
|
|
* read-block transaction.
|
|
* @param Csd: pointer on an SCD register structure
|
|
* @retval SD status
|
|
*/
|
|
uint8_t SD_GetCSDRegister(SD_CSD* Csd) {
|
|
uint16_t counter = 0;
|
|
uint8_t CSD_Tab[16];
|
|
uint8_t retr = BSP_SD_ERROR;
|
|
SD_CmdAnswer_typedef response;
|
|
|
|
/* Send CMD9 (CSD register) or CMD10(CSD register) and Wait for response in the R1 format (0x00 is no errors) */
|
|
response = SD_SendCmd(SD_CMD_SEND_CSD, 0, 0xFF, SD_ANSWER_R1_EXPECTED);
|
|
if(response.r1 == SD_R1_NO_ERROR) {
|
|
if(SD_WaitData(SD_TOKEN_START_DATA_SINGLE_BLOCK_READ) == BSP_SD_OK) {
|
|
for(counter = 0; counter < 16; counter++) {
|
|
/* Store CSD register value on CSD_Tab */
|
|
CSD_Tab[counter] = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
}
|
|
|
|
/* Get CRC bytes (not really needed by us, but required by SD) */
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/*************************************************************************
|
|
CSD header decoding
|
|
*************************************************************************/
|
|
|
|
/* Byte 0 */
|
|
Csd->CSDStruct = (CSD_Tab[0] & 0xC0) >> 6;
|
|
Csd->Reserved1 = CSD_Tab[0] & 0x3F;
|
|
|
|
/* Byte 1 */
|
|
Csd->TAAC = CSD_Tab[1];
|
|
|
|
/* Byte 2 */
|
|
Csd->NSAC = CSD_Tab[2];
|
|
|
|
/* Byte 3 */
|
|
Csd->MaxBusClkFrec = CSD_Tab[3];
|
|
|
|
/* Byte 4/5 */
|
|
Csd->CardComdClasses = (CSD_Tab[4] << 4) | ((CSD_Tab[5] & 0xF0) >> 4);
|
|
Csd->RdBlockLen = CSD_Tab[5] & 0x0F;
|
|
|
|
/* Byte 6 */
|
|
Csd->PartBlockRead = (CSD_Tab[6] & 0x80) >> 7;
|
|
Csd->WrBlockMisalign = (CSD_Tab[6] & 0x40) >> 6;
|
|
Csd->RdBlockMisalign = (CSD_Tab[6] & 0x20) >> 5;
|
|
Csd->DSRImpl = (CSD_Tab[6] & 0x10) >> 4;
|
|
|
|
/*************************************************************************
|
|
CSD v1/v2 decoding
|
|
*************************************************************************/
|
|
|
|
if(flag_SDHC == 0) {
|
|
Csd->version.v1.Reserved1 = ((CSD_Tab[6] & 0x0C) >> 2);
|
|
|
|
Csd->version.v1.DeviceSize = ((CSD_Tab[6] & 0x03) << 10) | (CSD_Tab[7] << 2) |
|
|
((CSD_Tab[8] & 0xC0) >> 6);
|
|
Csd->version.v1.MaxRdCurrentVDDMin = (CSD_Tab[8] & 0x38) >> 3;
|
|
Csd->version.v1.MaxRdCurrentVDDMax = (CSD_Tab[8] & 0x07);
|
|
Csd->version.v1.MaxWrCurrentVDDMin = (CSD_Tab[9] & 0xE0) >> 5;
|
|
Csd->version.v1.MaxWrCurrentVDDMax = (CSD_Tab[9] & 0x1C) >> 2;
|
|
Csd->version.v1.DeviceSizeMul = ((CSD_Tab[9] & 0x03) << 1) |
|
|
((CSD_Tab[10] & 0x80) >> 7);
|
|
} else {
|
|
Csd->version.v2.Reserved1 = ((CSD_Tab[6] & 0x0F) << 2) |
|
|
((CSD_Tab[7] & 0xC0) >> 6);
|
|
Csd->version.v2.DeviceSize = ((CSD_Tab[7] & 0x3F) << 16) | (CSD_Tab[8] << 8) |
|
|
CSD_Tab[9];
|
|
Csd->version.v2.Reserved2 = ((CSD_Tab[10] & 0x80) >> 8);
|
|
}
|
|
|
|
Csd->EraseSingleBlockEnable = (CSD_Tab[10] & 0x40) >> 6;
|
|
Csd->EraseSectorSize = ((CSD_Tab[10] & 0x3F) << 1) | ((CSD_Tab[11] & 0x80) >> 7);
|
|
Csd->WrProtectGrSize = (CSD_Tab[11] & 0x7F);
|
|
Csd->WrProtectGrEnable = (CSD_Tab[12] & 0x80) >> 7;
|
|
Csd->Reserved2 = (CSD_Tab[12] & 0x60) >> 5;
|
|
Csd->WrSpeedFact = (CSD_Tab[12] & 0x1C) >> 2;
|
|
Csd->MaxWrBlockLen = ((CSD_Tab[12] & 0x03) << 2) | ((CSD_Tab[13] & 0xC0) >> 6);
|
|
Csd->WriteBlockPartial = (CSD_Tab[13] & 0x20) >> 5;
|
|
Csd->Reserved3 = (CSD_Tab[13] & 0x1F);
|
|
Csd->FileFormatGrouop = (CSD_Tab[14] & 0x80) >> 7;
|
|
Csd->CopyFlag = (CSD_Tab[14] & 0x40) >> 6;
|
|
Csd->PermWrProtect = (CSD_Tab[14] & 0x20) >> 5;
|
|
Csd->TempWrProtect = (CSD_Tab[14] & 0x10) >> 4;
|
|
Csd->FileFormat = (CSD_Tab[14] & 0x0C) >> 2;
|
|
Csd->Reserved4 = (CSD_Tab[14] & 0x03);
|
|
Csd->crc = (CSD_Tab[15] & 0xFE) >> 1;
|
|
Csd->Reserved5 = (CSD_Tab[15] & 0x01);
|
|
|
|
retr = BSP_SD_OK;
|
|
}
|
|
}
|
|
|
|
/* Send dummy byte: 8 Clock pulses of delay */
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Return the reponse */
|
|
return retr;
|
|
}
|
|
|
|
/**
|
|
* @brief Reads the SD card CID register.
|
|
* Reading the contents of the CID register in SPI mode is a simple
|
|
* read-block transaction.
|
|
* @param Cid: pointer on an CID register structure
|
|
* @retval SD status
|
|
*/
|
|
uint8_t SD_GetCIDRegister(SD_CID* Cid) {
|
|
uint32_t counter = 0;
|
|
uint8_t retr = BSP_SD_ERROR;
|
|
uint8_t CID_Tab[16];
|
|
SD_CmdAnswer_typedef response;
|
|
|
|
/* Send CMD10 (CID register) and Wait for response in the R1 format (0x00 is no errors) */
|
|
response = SD_SendCmd(SD_CMD_SEND_CID, 0, 0xFF, SD_ANSWER_R1_EXPECTED);
|
|
if(response.r1 == SD_R1_NO_ERROR) {
|
|
if(SD_WaitData(SD_TOKEN_START_DATA_SINGLE_BLOCK_READ) == BSP_SD_OK) {
|
|
/* Store CID register value on CID_Tab */
|
|
for(counter = 0; counter < 16; counter++) {
|
|
CID_Tab[counter] = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
}
|
|
|
|
/* Get CRC bytes (not really needed by us, but required by SD) */
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Byte 0 */
|
|
Cid->ManufacturerID = CID_Tab[0];
|
|
|
|
/* Byte 1 */
|
|
Cid->OEM_AppliID = CID_Tab[1] << 8;
|
|
|
|
/* Byte 2 */
|
|
Cid->OEM_AppliID |= CID_Tab[2];
|
|
|
|
/* Byte 3 */
|
|
Cid->ProdName1 = CID_Tab[3] << 24;
|
|
|
|
/* Byte 4 */
|
|
Cid->ProdName1 |= CID_Tab[4] << 16;
|
|
|
|
/* Byte 5 */
|
|
Cid->ProdName1 |= CID_Tab[5] << 8;
|
|
|
|
/* Byte 6 */
|
|
Cid->ProdName1 |= CID_Tab[6];
|
|
|
|
/* Byte 7 */
|
|
Cid->ProdName2 = CID_Tab[7];
|
|
|
|
/* Byte 8 */
|
|
Cid->ProdRev = CID_Tab[8];
|
|
|
|
/* Byte 9 */
|
|
Cid->ProdSN = CID_Tab[9] << 24;
|
|
|
|
/* Byte 10 */
|
|
Cid->ProdSN |= CID_Tab[10] << 16;
|
|
|
|
/* Byte 11 */
|
|
Cid->ProdSN |= CID_Tab[11] << 8;
|
|
|
|
/* Byte 12 */
|
|
Cid->ProdSN |= CID_Tab[12];
|
|
|
|
/* Byte 13 */
|
|
Cid->Reserved1 |= (CID_Tab[13] & 0xF0) >> 4;
|
|
Cid->ManufactDate = (CID_Tab[13] & 0x0F) << 8;
|
|
|
|
/* Byte 14 */
|
|
Cid->ManufactDate |= CID_Tab[14];
|
|
|
|
/* Byte 15 */
|
|
Cid->CID_CRC = (CID_Tab[15] & 0xFE) >> 1;
|
|
Cid->Reserved2 = 1;
|
|
|
|
retr = BSP_SD_OK;
|
|
}
|
|
}
|
|
|
|
/* Send dummy byte: 8 Clock pulses of delay */
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Return the reponse */
|
|
return retr;
|
|
}
|
|
|
|
/**
|
|
* @brief Sends 5 bytes command to the SD card and get response
|
|
* @param Cmd: The user expected command to send to SD card.
|
|
* @param Arg: The command argument.
|
|
* @param Crc: The CRC.
|
|
* @param Answer: SD_ANSWER_NOT_EXPECTED or SD_ANSWER_EXPECTED
|
|
* @retval SD status
|
|
*/
|
|
SD_CmdAnswer_typedef SD_SendCmd(uint8_t Cmd, uint32_t Arg, uint8_t Crc, uint8_t Answer) {
|
|
uint8_t frame[SD_CMD_LENGTH], frameout[SD_CMD_LENGTH];
|
|
SD_CmdAnswer_typedef retr = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
|
|
|
|
/* R1 Lenght = NCS(0)+ 6 Bytes command + NCR(min1 max8) + 1 Bytes answer + NEC(0) = 15bytes */
|
|
/* R1b identical to R1 + Busy information */
|
|
/* R2 Lenght = NCS(0)+ 6 Bytes command + NCR(min1 max8) + 2 Bytes answer + NEC(0) = 16bytes */
|
|
|
|
/* Prepare Frame to send */
|
|
frame[0] = (Cmd | 0x40); /* Construct byte 1 */
|
|
frame[1] = (uint8_t)(Arg >> 24); /* Construct byte 2 */
|
|
frame[2] = (uint8_t)(Arg >> 16); /* Construct byte 3 */
|
|
frame[3] = (uint8_t)(Arg >> 8); /* Construct byte 4 */
|
|
frame[4] = (uint8_t)(Arg); /* Construct byte 5 */
|
|
frame[5] = (Crc | 0x01); /* Construct byte 6 */
|
|
|
|
/* Send the command */
|
|
SD_IO_CSState(0);
|
|
SD_IO_WriteReadData(frame, frameout, SD_CMD_LENGTH); /* Send the Cmd bytes */
|
|
|
|
switch(Answer) {
|
|
case SD_ANSWER_R1_EXPECTED:
|
|
retr.r1 = SD_ReadData();
|
|
break;
|
|
case SD_ANSWER_R1B_EXPECTED:
|
|
retr.r1 = SD_ReadData();
|
|
retr.r2 = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
/* Set CS High */
|
|
SD_IO_CSState(1);
|
|
HAL_Delay(1);
|
|
/* Set CS Low */
|
|
SD_IO_CSState(0);
|
|
|
|
/* Wait IO line return 0xFF */
|
|
while(SD_IO_WriteByte(SD_DUMMY_BYTE) != 0xFF)
|
|
;
|
|
break;
|
|
case SD_ANSWER_R2_EXPECTED:
|
|
retr.r1 = SD_ReadData();
|
|
retr.r2 = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
break;
|
|
case SD_ANSWER_R3_EXPECTED:
|
|
case SD_ANSWER_R7_EXPECTED:
|
|
retr.r1 = SD_ReadData();
|
|
retr.r2 = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
retr.r3 = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
retr.r4 = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
retr.r5 = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return retr;
|
|
}
|
|
|
|
/**
|
|
* @brief Gets the SD card data response and check the busy flag.
|
|
* @param None
|
|
* @retval The SD status: Read data response xxx0<status>1
|
|
* - status 010: Data accecpted
|
|
* - status 101: Data rejected due to a crc error
|
|
* - status 110: Data rejected due to a Write error.
|
|
* - status 111: Data rejected due to other error.
|
|
*/
|
|
uint8_t SD_GetDataResponse(void) {
|
|
uint8_t dataresponse;
|
|
uint8_t rvalue = SD_DATA_OTHER_ERROR;
|
|
|
|
dataresponse = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE); /* read the busy response byte*/
|
|
|
|
/* Mask unused bits */
|
|
switch(dataresponse & 0x1F) {
|
|
case SD_DATA_OK:
|
|
rvalue = SD_DATA_OK;
|
|
|
|
/* Set CS High */
|
|
SD_IO_CSState(1);
|
|
/* Set CS Low */
|
|
SD_IO_CSState(0);
|
|
|
|
/* Wait IO line return 0xFF */
|
|
while(SD_IO_WriteByte(SD_DUMMY_BYTE) != 0xFF)
|
|
;
|
|
break;
|
|
case SD_DATA_CRC_ERROR:
|
|
rvalue = SD_DATA_CRC_ERROR;
|
|
break;
|
|
case SD_DATA_WRITE_ERROR:
|
|
rvalue = SD_DATA_WRITE_ERROR;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Return response */
|
|
return rvalue;
|
|
}
|
|
|
|
/**
|
|
* @brief Put the SD in Idle state.
|
|
* @param None
|
|
* @retval SD status
|
|
*/
|
|
uint8_t SD_GoIdleState(void) {
|
|
SD_CmdAnswer_typedef response;
|
|
__IO uint8_t counter = 0;
|
|
/* Send CMD0 (SD_CMD_GO_IDLE_STATE) to put SD in SPI mode and
|
|
wait for In Idle State Response (R1 Format) equal to 0x01 */
|
|
do {
|
|
counter++;
|
|
response = SD_SendCmd(SD_CMD_GO_IDLE_STATE, 0, 0x95, SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
if(counter >= SD_MAX_TRY) {
|
|
return BSP_SD_ERROR;
|
|
}
|
|
} while(response.r1 != SD_R1_IN_IDLE_STATE);
|
|
|
|
/* Send CMD8 (SD_CMD_SEND_IF_COND) to check the power supply status
|
|
and wait until response (R7 Format) equal to 0xAA and */
|
|
response = SD_SendCmd(SD_CMD_SEND_IF_COND, 0x1AA, 0x87, SD_ANSWER_R7_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
if((response.r1 & SD_R1_ILLEGAL_COMMAND) == SD_R1_ILLEGAL_COMMAND) {
|
|
/* initialise card V1 */
|
|
do {
|
|
/* initialise card V1 */
|
|
/* Send CMD55 (SD_CMD_APP_CMD) before any ACMD command: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(SD_CMD_APP_CMD, 0x00000000, 0xFF, SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Send ACMD41 (SD_CMD_SD_APP_OP_COND) to initialize SDHC or SDXC cards: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(SD_CMD_SD_APP_OP_COND, 0x00000000, 0xFF, SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
} while(response.r1 == SD_R1_IN_IDLE_STATE);
|
|
flag_SDHC = 0;
|
|
} else if(response.r1 == SD_R1_IN_IDLE_STATE) {
|
|
/* initialise card V2 */
|
|
do {
|
|
/* Send CMD55 (SD_CMD_APP_CMD) before any ACMD command: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(SD_CMD_APP_CMD, 0, 0xFF, SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
|
|
/* Send ACMD41 (SD_CMD_SD_APP_OP_COND) to initialize SDHC or SDXC cards: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(SD_CMD_SD_APP_OP_COND, 0x40000000, 0xFF, SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
} while(response.r1 == SD_R1_IN_IDLE_STATE);
|
|
|
|
if((response.r1 & SD_R1_ILLEGAL_COMMAND) == SD_R1_ILLEGAL_COMMAND) {
|
|
do {
|
|
/* Send CMD55 (SD_CMD_APP_CMD) before any ACMD command: R1 response (0x00: no errors) */
|
|
response = SD_SendCmd(SD_CMD_APP_CMD, 0, 0xFF, SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
if(response.r1 != SD_R1_IN_IDLE_STATE) {
|
|
return BSP_SD_ERROR;
|
|
}
|
|
/* Send ACMD41 (SD_CMD_SD_APP_OP_COND) to initialize SDHC or SDXC cards: R1 response (0x00: no errors) */
|
|
response =
|
|
SD_SendCmd(SD_CMD_SD_APP_OP_COND, 0x00000000, 0xFF, SD_ANSWER_R1_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
} while(response.r1 == SD_R1_IN_IDLE_STATE);
|
|
}
|
|
|
|
/* Send CMD58 (SD_CMD_READ_OCR) to initialize SDHC or SDXC cards: R3 response (0x00: no errors) */
|
|
response = SD_SendCmd(SD_CMD_READ_OCR, 0x00000000, 0xFF, SD_ANSWER_R3_EXPECTED);
|
|
SD_IO_CSState(1);
|
|
SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
if(response.r1 != SD_R1_NO_ERROR) {
|
|
return BSP_SD_ERROR;
|
|
}
|
|
flag_SDHC = (response.r2 & 0x40) >> 6;
|
|
} else {
|
|
return BSP_SD_ERROR;
|
|
}
|
|
|
|
return BSP_SD_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Waits a data until a value different from SD_DUMMY_BITE
|
|
* @param None
|
|
* @retval the value read
|
|
*/
|
|
uint8_t SD_ReadData(void) {
|
|
uint8_t timeout = 0x08;
|
|
uint8_t readvalue;
|
|
|
|
/* Check if response is got or a timeout is happen */
|
|
do {
|
|
readvalue = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
timeout--;
|
|
|
|
} while((readvalue == SD_DUMMY_BYTE) && timeout);
|
|
|
|
/* Right response got */
|
|
return readvalue;
|
|
}
|
|
|
|
/**
|
|
* @brief Waits a data from the SD card
|
|
* @param data : Expected data from the SD card
|
|
* @retval BSP_SD_OK or BSP_SD_TIMEOUT
|
|
*/
|
|
uint8_t SD_WaitData(uint8_t data) {
|
|
uint16_t timeout = 0xFFFF;
|
|
uint8_t readvalue;
|
|
|
|
/* Check if response is got or a timeout is happen */
|
|
|
|
do {
|
|
readvalue = SD_IO_WriteByte(SD_DUMMY_BYTE);
|
|
timeout--;
|
|
} while((readvalue != data) && timeout);
|
|
|
|
if(timeout == 0) {
|
|
/* After time out */
|
|
return BSP_SD_TIMEOUT;
|
|
}
|
|
|
|
/* Right response got */
|
|
return BSP_SD_OK;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|