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/*
* Copyright (c) 2022 ~ 2026, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbd_core.h"
#include "usbd_dfu.h"
#define USBD_VID 0x0483
#define USBD_PID 0xdf11
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
#define USB_CONFIG_SIZE (9 + DFU_DESCRIPTOR_LEN)
#define FLASH_DESC_STR "@Internal Flash /0x08000000/16*128Kg"
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),
DFU_DESCRIPTOR_INIT(4)
};
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 DFU DEMO", /* Product */
"2022123456", /* Serial Number */
FLASH_DESC_STR
};
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 dfu_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;
}
}
struct usbd_interface intf0;
void dfu_init(uint8_t busid, uintptr_t reg_base)
{
usbd_desc_register(busid, &dfu_descriptor);
usbd_add_interface(busid, usbd_dfu_init_intf(&intf0));
usbd_initialize(busid, reg_base, usbd_event_handler);
}
volatile uint32_t flash_start_address;
void usbd_dfu_begin_load(void)
{
flash_start_address = 0x08000000;
}
void usbd_dfu_end_load(void)
{
}
void usbd_dfu_reset(void)
{
//NVIC_SystemReset();
}
int usbd_dfu_write(uint16_t value, const uint8_t *data, uint16_t length)
{
//usb_hexdump(data, length);
// patch for stm32 special command
#if 1
if (value == 0) {
if (data[0] == DFU_SPECIAL_CMD_SET_ADDRESS_POINTER) {
memcpy((uint8_t *)&flash_start_address, data, 4);
} else if (data[0] == DFU_SPECIAL_CMD_ERASE) {
memcpy((uint8_t *)&flash_start_address, data, 4);
}
} else if (value > 1) {
uint32_t addr = (value - 2) * CONFIG_USBDEV_REQUEST_BUFFER_LEN + flash_start_address;
}
#else
flash_start_address += length;
#endif
return 0;
}
int usbd_dfu_read(uint16_t value, uint8_t *data, uint16_t length, uint16_t *actual_length)
{
return 0;
}
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