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micropython/stm/stmusbd/usbd_storage_msd.c

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10 KiB
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/**
******************************************************************************
* @file usbd_storage_msd.c
* @author MCD application Team
* @version V1.1.0
* @date 19-March-2012
* @brief This file provides the disk operations functions.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Heavily modified by dpgeorge for Micro Python.
*
******************************************************************************
*/
#include "usbd_msc_mem.h"
#include "usb_conf.h"
#include "usbd_storage_msd.h"
#include "misc.h"
#include "storage.h"
#include "diskio.h"
#include "sdcard.h"
/******************************************************************************/
// Callback functions for when the internal flash is the mass storage device
static const int8_t FLASH_STORAGE_Inquirydata[] = { // 36 bytes
/* LUN 0 */
0x00,
0x00, // 0x00 for a fixed drive, 0x80 for a removable drive
0x02,
0x02,
(USBD_STD_INQUIRY_LENGTH - 5),
0x00,
0x00,
0x00,
'S', 'T', 'M', ' ', ' ', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
'm', 'i', 'c', 'r', 'o', 'S', 'D', ' ', /* Product : 16 Bytes */
'F', 'l', 'a', 's', 'h', ' ', ' ', ' ',
'1', '.', '0' ,'0', /* Version : 4 Bytes */
};
/**
* @brief Initialize the storage medium
* @param lun : logical unit number
* @retval Status
*/
int8_t FLASH_STORAGE_Init(uint8_t lun) {
storage_init();
return 0;
}
/**
* @brief return medium capacity and block size
* @param lun : logical unit number
* @param block_num : number of physical block
* @param block_size : size of a physical block
* @retval Status
*/
int8_t FLASH_STORAGE_GetCapacity(uint8_t lun, uint32_t *block_num, uint32_t *block_size) {
*block_size = storage_get_block_size();
*block_num = storage_get_block_count();
return 0;
}
/**
* @brief check whether the medium is ready
* @param lun : logical unit number
* @retval Status
*/
int8_t FLASH_STORAGE_IsReady(uint8_t lun) {
return 0;
}
/**
* @brief check whether the medium is write-protected
* @param lun : logical unit number
* @retval Status
*/
int8_t FLASH_STORAGE_IsWriteProtected(uint8_t lun) {
return 0;
}
/**
* @brief Read data from the medium
* @param lun : logical unit number
* @param buf : Pointer to the buffer to save data
* @param blk_addr : address of 1st block to be read
* @param blk_len : nmber of blocks to be read
* @retval Status
*/
int8_t FLASH_STORAGE_Read(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len) {
disk_read(0, buf, blk_addr, blk_len);
/*
for (int i = 0; i < blk_len; i++) {
if (!storage_read_block(buf + i * FLASH_BLOCK_SIZE, blk_addr + i)) {
return -1;
}
}
*/
return 0;
}
/**
* @brief Write data to the medium
* @param lun : logical unit number
* @param buf : Pointer to the buffer to write from
* @param blk_addr : address of 1st block to be written
* @param blk_len : nmber of blocks to be read
* @retval Status
*/
int8_t FLASH_STORAGE_Write (uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len) {
disk_write(0, buf, blk_addr, blk_len);
/*
for (int i = 0; i < blk_len; i++) {
if (!storage_write_block(buf + i * FLASH_BLOCK_SIZE, blk_addr + i)) {
return -1;
}
}
*/
storage_flush(); // XXX hack for now so that the cache is always flushed
return 0;
}
/**
* @brief Return number of supported logical unit
* @param None
* @retval number of logical unit
*/
int8_t FLASH_STORAGE_GetMaxLun(void) {
return 0;
}
static const USBD_STORAGE_cb_TypeDef USBD_FLASH_STORAGE_fops = {
FLASH_STORAGE_Init,
FLASH_STORAGE_GetCapacity,
FLASH_STORAGE_IsReady,
FLASH_STORAGE_IsWriteProtected,
FLASH_STORAGE_Read,
FLASH_STORAGE_Write,
FLASH_STORAGE_GetMaxLun,
(int8_t *)FLASH_STORAGE_Inquirydata,
};
/******************************************************************************/
// Callback functions for when the SD card is the mass storage device
static const int8_t SDCARD_STORAGE_Inquirydata[] = { // 36 bytes
/* LUN 0 */
0x00,
0x80, // 0x00 for a fixed drive, 0x80 for a removable drive
0x02,
0x02,
(USBD_STD_INQUIRY_LENGTH - 5),
0x00,
0x00,
0x00,
'S', 'T', 'M', ' ', ' ', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
'm', 'i', 'c', 'r', 'o', 'S', 'D', ' ', /* Product : 16 Bytes */
'S', 'D', ' ', 'c', 'a', 'r', 'd', ' ',
'1', '.', '0' ,'0', /* Version : 4 Bytes */
};
/**
* @brief Initialize the storage medium
* @param lun : logical unit number
* @retval Status
*/
int8_t SDCARD_STORAGE_Init(uint8_t lun) {
/*
#ifndef USE_STM3210C_EVAL
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
#endif
if( SD_Init() != 0)
{
return (-1);
}
*/
if (!sdcard_power_on()) {
return -1;
}
return 0;
}
/**
* @brief return medium capacity and block size
* @param lun : logical unit number
* @param block_num : number of physical block
* @param block_size : size of a physical block
* @retval Status
*/
int8_t SDCARD_STORAGE_GetCapacity(uint8_t lun, uint32_t *block_num, uint32_t *block_size) {
/*
#ifdef USE_STM3210C_EVAL
SD_CardInfo SDCardInfo;
SD_GetCardInfo(&SDCardInfo);
#else
if(SD_GetStatus() != 0 ) {
return (-1);
}
#endif
*/
*block_size = SDCARD_BLOCK_SIZE;
*block_num = sdcard_get_capacity_in_bytes() / SDCARD_BLOCK_SIZE;
return 0;
}
/**
* @brief check whether the medium is ready
* @param lun : logical unit number
* @retval Status
*/
int8_t SDCARD_STORAGE_IsReady(uint8_t lun) {
/*
#ifndef USE_STM3210C_EVAL
static int8_t last_status = 0;
if(last_status < 0)
{
SD_Init();
last_status = 0;
}
if(SD_GetStatus() != 0)
{
last_status = -1;
return (-1);
}
#else
if( SD_Init() != 0)
{
return (-1);
}
#endif
*/
return 0;
}
/**
* @brief check whether the medium is write-protected
* @param lun : logical unit number
* @retval Status
*/
int8_t SDCARD_STORAGE_IsWriteProtected(uint8_t lun) {
return 0;
}
/**
* @brief Read data from the medium
* @param lun : logical unit number
* @param buf : Pointer to the buffer to save data
* @param blk_addr : address of 1st block to be read
* @param blk_len : nmber of blocks to be read
* @retval Status
*/
int8_t SDCARD_STORAGE_Read(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len) {
// TODO replace with call to sdcard_read_multi_blocks
for (int i = 0; i < blk_len; i++) {
if (!sdcard_read_block(buf + i * SDCARD_BLOCK_SIZE, blk_addr + i)) {
return -1;
}
}
/*
if (SD_ReadMultiBlocks(buf, blk_addr * 512, 512, blk_len) != 0) {
return -1;
}
#ifndef USE_STM3210C_EVAL
SD_WaitReadOperation();
while (SD_GetStatus() != SD_TRANSFER_OK);
#endif
*/
return 0;
}
/**
* @brief Write data to the medium
* @param lun : logical unit number
* @param buf : Pointer to the buffer to write from
* @param blk_addr : address of 1st block to be written
* @param blk_len : nmber of blocks to be read
* @retval Status
*/
int8_t SDCARD_STORAGE_Write(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len) {
// TODO replace with call to sdcard_write_multi_blocks
for (int i = 0; i < blk_len; i++) {
if (!sdcard_write_block(buf + i * SDCARD_BLOCK_SIZE, blk_addr + i)) {
return -1;
}
}
/*
if( SD_WriteMultiBlocks (buf, blk_addr * 512, 512, blk_len) != 0) {
return -1;
}
#ifndef USE_STM3210C_EVAL
SD_WaitWriteOperation();
while (SD_GetStatus() != SD_TRANSFER_OK);
#endif
*/
return 0;
}
/**
* @brief Return number of supported logical unit
* @param None
* @retval number of logical unit
*/
int8_t SDCARD_STORAGE_GetMaxLun(void) {
return 0;
}
static const USBD_STORAGE_cb_TypeDef USBD_SDCARD_STORAGE_fops = {
SDCARD_STORAGE_Init,
SDCARD_STORAGE_GetCapacity,
SDCARD_STORAGE_IsReady,
SDCARD_STORAGE_IsWriteProtected,
SDCARD_STORAGE_Read,
SDCARD_STORAGE_Write,
SDCARD_STORAGE_GetMaxLun,
(int8_t *)SDCARD_STORAGE_Inquirydata,
};
/******************************************************************************/
// Callback functions for when the SD card is the mass storage device
// default to flash as the storage device
USBD_STORAGE_cb_TypeDef *USBD_STORAGE_fops = (USBD_STORAGE_cb_TypeDef*)&USBD_FLASH_STORAGE_fops;
void usbd_storage_select_medium(usbd_storage_medium_kind_t medium_kind) {
switch (medium_kind) {
case USBD_STORAGE_MEDIUM_FLASH:
USBD_STORAGE_fops = (USBD_STORAGE_cb_TypeDef*)&USBD_FLASH_STORAGE_fops;
break;
case USBD_STORAGE_MEDIUM_SDCARD:
USBD_STORAGE_fops = (USBD_STORAGE_cb_TypeDef*)&USBD_SDCARD_STORAGE_fops;
break;
}
}
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