166 lines
5.1 KiB
C
166 lines
5.1 KiB
C
/*
|
|
* Copyright (c) 2024, sakumisu
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
#include "usbd_core.h"
|
|
#include "usbd_msc.h"
|
|
|
|
#define MSC_IN_EP 0x81
|
|
#define MSC_OUT_EP 0x02
|
|
|
|
#define USBD_VID 0xFFFF
|
|
#define USBD_PID 0xFFFF
|
|
#define USBD_MAX_POWER 100
|
|
#define USBD_LANGID_STRING 1033
|
|
|
|
#define USB_CONFIG_SIZE (9 + MSC_DESCRIPTOR_LEN)
|
|
|
|
#ifdef CONFIG_USB_HS
|
|
#define MSC_MAX_MPS 512
|
|
#else
|
|
#define MSC_MAX_MPS 64
|
|
#endif
|
|
|
|
const uint8_t msc_ram_descriptor[] = {
|
|
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01),
|
|
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
|
|
MSC_DESCRIPTOR_INIT(0x00, MSC_OUT_EP, MSC_IN_EP, MSC_MAX_MPS, 0x02),
|
|
///////////////////////////////////////
|
|
/// string0 descriptor
|
|
///////////////////////////////////////
|
|
USB_LANGID_INIT(USBD_LANGID_STRING),
|
|
///////////////////////////////////////
|
|
/// string1 descriptor
|
|
///////////////////////////////////////
|
|
0x14, /* bLength */
|
|
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
|
|
'C', 0x00, /* wcChar0 */
|
|
'h', 0x00, /* wcChar1 */
|
|
'e', 0x00, /* wcChar2 */
|
|
'r', 0x00, /* wcChar3 */
|
|
'r', 0x00, /* wcChar4 */
|
|
'y', 0x00, /* wcChar5 */
|
|
'U', 0x00, /* wcChar6 */
|
|
'S', 0x00, /* wcChar7 */
|
|
'B', 0x00, /* wcChar8 */
|
|
///////////////////////////////////////
|
|
/// string2 descriptor
|
|
///////////////////////////////////////
|
|
0x26, /* bLength */
|
|
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
|
|
'C', 0x00, /* wcChar0 */
|
|
'h', 0x00, /* wcChar1 */
|
|
'e', 0x00, /* wcChar2 */
|
|
'r', 0x00, /* wcChar3 */
|
|
'r', 0x00, /* wcChar4 */
|
|
'y', 0x00, /* wcChar5 */
|
|
'U', 0x00, /* wcChar6 */
|
|
'S', 0x00, /* wcChar7 */
|
|
'B', 0x00, /* wcChar8 */
|
|
' ', 0x00, /* wcChar9 */
|
|
'M', 0x00, /* wcChar10 */
|
|
'S', 0x00, /* wcChar11 */
|
|
'C', 0x00, /* wcChar12 */
|
|
' ', 0x00, /* wcChar13 */
|
|
'D', 0x00, /* wcChar14 */
|
|
'E', 0x00, /* wcChar15 */
|
|
'M', 0x00, /* wcChar16 */
|
|
'O', 0x00, /* wcChar17 */
|
|
///////////////////////////////////////
|
|
/// string3 descriptor
|
|
///////////////////////////////////////
|
|
0x16, /* bLength */
|
|
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
|
|
'2', 0x00, /* wcChar0 */
|
|
'0', 0x00, /* wcChar1 */
|
|
'2', 0x00, /* wcChar2 */
|
|
'2', 0x00, /* wcChar3 */
|
|
'1', 0x00, /* wcChar4 */
|
|
'2', 0x00, /* wcChar5 */
|
|
'3', 0x00, /* wcChar6 */
|
|
'4', 0x00, /* wcChar7 */
|
|
'5', 0x00, /* wcChar8 */
|
|
'6', 0x00, /* wcChar9 */
|
|
#ifdef CONFIG_USB_HS
|
|
///////////////////////////////////////
|
|
/// device qualifier descriptor
|
|
///////////////////////////////////////
|
|
0x0a,
|
|
USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
|
|
0x00,
|
|
0x02,
|
|
0x00,
|
|
0x00,
|
|
0x00,
|
|
0x40,
|
|
0x01,
|
|
0x00,
|
|
#endif
|
|
0x00
|
|
};
|
|
|
|
static void usbd_event_handler(uint8_t busid, uint8_t event)
|
|
{
|
|
switch (event) {
|
|
case USBD_EVENT_RESET:
|
|
break;
|
|
case USBD_EVENT_CONNECTED:
|
|
break;
|
|
case USBD_EVENT_DISCONNECTED:
|
|
break;
|
|
case USBD_EVENT_RESUME:
|
|
break;
|
|
case USBD_EVENT_SUSPEND:
|
|
break;
|
|
case USBD_EVENT_CONFIGURED:
|
|
break;
|
|
case USBD_EVENT_SET_REMOTE_WAKEUP:
|
|
break;
|
|
case USBD_EVENT_CLR_REMOTE_WAKEUP:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define BLOCK_SIZE 512
|
|
#define BLOCK_COUNT 10
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t BlockSpace[BLOCK_SIZE];
|
|
} BLOCK_TYPE;
|
|
|
|
BLOCK_TYPE mass_block[BLOCK_COUNT];
|
|
|
|
void usbd_msc_get_cap(uint8_t busid, uint8_t lun, uint32_t *block_num, uint32_t *block_size)
|
|
{
|
|
*block_num = 1000; //Pretend having so many buffer,not has actually.
|
|
*block_size = BLOCK_SIZE;
|
|
}
|
|
int usbd_msc_sector_read(uint8_t busid, uint8_t lun, uint32_t sector, uint8_t *buffer, uint32_t length)
|
|
{
|
|
if (sector < BLOCK_COUNT)
|
|
memcpy(buffer, mass_block[sector].BlockSpace, length);
|
|
return 0;
|
|
}
|
|
|
|
int usbd_msc_sector_write(uint8_t busid, uint8_t lun, uint32_t sector, uint8_t *buffer, uint32_t length)
|
|
{
|
|
if (sector < BLOCK_COUNT)
|
|
memcpy(mass_block[sector].BlockSpace, buffer, length);
|
|
return 0;
|
|
}
|
|
|
|
struct usbd_interface intf0;
|
|
|
|
void msc_ram_init(uint8_t busid, uint32_t reg_base)
|
|
{
|
|
usbd_desc_register(busid, msc_ram_descriptor);
|
|
usbd_add_interface(busid, usbd_msc_init_intf(busid, &intf0, MSC_OUT_EP, MSC_IN_EP));
|
|
|
|
usbd_initialize(busid, reg_base, usbd_event_handler);
|
|
}
|