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/*
* 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
static const uint8_t device_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01)
};
static const uint8_t config_descriptor[] = {
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)
};
static const uint8_t device_quality_descriptor[] = {
///////////////////////////////////////
/// device qualifier descriptor
///////////////////////////////////////
0x0a,
USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
0x00,
0x02,
0x00,
0x00,
0x00,
0x40,
0x00,
0x00,
};
static const char *string_descriptors[] = {
(const char[]){ 0x09, 0x04 }, /* Langid */
"CherryUSB", /* Manufacturer */
"CherryUSB MSC DEMO", /* Product */
"2022123456", /* Serial Number */
};
static const uint8_t *device_descriptor_callback(uint8_t speed)
{
return device_descriptor;
}
static const uint8_t *config_descriptor_callback(uint8_t speed)
{
return config_descriptor;
}
static const uint8_t *device_quality_descriptor_callback(uint8_t speed)
{
return device_quality_descriptor;
}
static const char *string_descriptor_callback(uint8_t speed, uint8_t index)
{
if (index >= (sizeof(string_descriptors) / sizeof(char *))) {
return NULL;
}
return string_descriptors[index];
}
const struct usb_descriptor msc_ram_descriptor = {
.device_descriptor_callback = device_descriptor_callback,
.config_descriptor_callback = config_descriptor_callback,
.device_quality_descriptor_callback = device_quality_descriptor_callback,
.string_descriptor_callback = string_descriptor_callback
};
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;
}
}
#if !defined(RT_CHERRYUSB_DEVICE_MSC_BLKDEV) && !defined(PKG_CHERRYUSB_DEVICE_MSC_BLKDEV)
#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;
}
#endif
static struct usbd_interface intf0;
void msc_ram_init(uint8_t busid, uintptr_t reg_base)
{
usbd_desc_register(busid, &msc_ram_descriptor);
#if defined(RT_CHERRYUSB_DEVICE_MSC_BLKDEV) || defined(PKG_CHERRYUSB_DEVICE_MSC_BLKDEV)
extern void usbd_msc_blkdev_init(uint8_t busid, uint8_t in_ep, uint8_t out_ep);
usbd_msc_blkdev_init(busid, MSC_IN_EP, MSC_OUT_EP);
#else
usbd_add_interface(busid, usbd_msc_init_intf(busid, &intf0, MSC_OUT_EP, MSC_IN_EP));
#endif
usbd_initialize(busid, reg_base, usbd_event_handler);
}
#if defined(CONFIG_USBDEV_MSC_POLLING)
void msc_ram_polling(uint8_t busid)
{
usbd_msc_polling(busid);
}
#endif
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