147 lines
4.5 KiB
C
147 lines
4.5 KiB
C
/*
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* Override of CubeN6's usbd_desc.c — Betaflight-branded USB descriptors.
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*
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* VID/PID kept as ST DfuSe defaults (0x0483/0xDF11) so dfu-util,
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* STM32CubeProgrammer, and BF Configurator's existing DFU plumbing all
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* work unchanged. Strings are Betaflight-branded so users see "Betaflight
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* N6 OBL" on enumerate.
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*/
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#include <stdio.h>
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#include "usbd_core.h"
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#include "usbd_desc.h"
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#include "usbd_conf.h"
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/* DfuSe protocol default VID/PID. Standard tooling targets this pair. */
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#define USBD_VID 0x0483
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#define USBD_PID 0xDF11
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#define USBD_LANGID_STRING 1033
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#define USBD_MANUFACTURER_STRING "Betaflight"
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#define USBD_PRODUCT_STRING "Betaflight N6 DFU"
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#define USBD_CONFIGURATION_STRING "BF N6 DFU Config"
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#define USBD_INTERFACE_STRING "BF N6 DFU Interface"
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uint8_t USBD_StrDesc[USBD_MAX_STR_DESC_SIZ];
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static void Get_SerialNum(void);
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uint8_t *USBD_DFU_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
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uint8_t *USBD_DFU_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
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uint8_t *USBD_DFU_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
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uint8_t *USBD_DFU_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
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uint8_t *USBD_DFU_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
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uint8_t *USBD_DFU_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
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uint8_t *USBD_DFU_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
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USBD_DescriptorsTypeDef DFU_Desc =
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{
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USBD_DFU_DeviceDescriptor,
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USBD_DFU_LangIDStrDescriptor,
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USBD_DFU_ManufacturerStrDescriptor,
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USBD_DFU_ProductStrDescriptor,
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USBD_DFU_SerialStrDescriptor,
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USBD_DFU_ConfigStrDescriptor,
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USBD_DFU_InterfaceStrDescriptor
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};
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__ALIGN_BEGIN uint8_t USBD_DFU_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END =
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{
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0x12,
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USB_DESC_TYPE_DEVICE,
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0x10, 0x01, /* USB 1.10 — DfuSe convention */
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0x00, 0x00, 0x00,
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USB_MAX_EP0_SIZE,
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LOBYTE(USBD_VID), HIBYTE(USBD_VID),
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LOBYTE(USBD_PID), HIBYTE(USBD_PID),
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0x00, 0x02, /* bcdDevice = 2.00 */
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USBD_IDX_MFC_STR,
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USBD_IDX_PRODUCT_STR,
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USBD_IDX_SERIAL_STR,
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USBD_MAX_NUM_CONFIGURATION
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};
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__ALIGN_BEGIN uint8_t USBD_LangIDDesc[USB_LEN_LANGID_STR_DESC] __ALIGN_END =
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{
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USB_LEN_LANGID_STR_DESC,
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USB_DESC_TYPE_STRING,
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LOBYTE(USBD_LANGID_STRING),
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HIBYTE(USBD_LANGID_STRING)
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};
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__ALIGN_BEGIN uint8_t USBD_StringSerial[USB_SIZ_STRING_SERIAL] __ALIGN_END =
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{
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USB_SIZ_STRING_SERIAL,
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USB_DESC_TYPE_STRING,
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};
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uint8_t *USBD_DFU_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
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{
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(void)speed;
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*length = sizeof(USBD_DFU_DeviceDesc);
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return USBD_DFU_DeviceDesc;
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}
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uint8_t *USBD_DFU_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
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{
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(void)speed;
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*length = sizeof(USBD_LangIDDesc);
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return USBD_LangIDDesc;
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}
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uint8_t *USBD_DFU_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
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{
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(void)speed;
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USBD_GetString((uint8_t *)USBD_PRODUCT_STRING, USBD_StrDesc, length);
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return USBD_StrDesc;
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}
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uint8_t *USBD_DFU_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
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{
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(void)speed;
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USBD_GetString((uint8_t *)USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
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return USBD_StrDesc;
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}
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uint8_t *USBD_DFU_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
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{
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(void)speed;
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*length = USB_SIZ_STRING_SERIAL;
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Get_SerialNum();
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return (uint8_t *)USBD_StringSerial;
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}
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uint8_t *USBD_DFU_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
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{
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(void)speed;
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USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING, USBD_StrDesc, length);
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return USBD_StrDesc;
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}
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uint8_t *USBD_DFU_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
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{
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(void)speed;
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USBD_GetString((uint8_t *)USBD_INTERFACE_STRING, USBD_StrDesc, length);
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return USBD_StrDesc;
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}
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static void Get_SerialNum(void)
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{
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/* Read the device unique ID from the boot ROM-published location.
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* DEVICE_ID1/2/3 are CMSIS macros pointing into system memory. */
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unsigned long s0 = *(uint32_t *)DEVICE_ID1;
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unsigned long s1 = *(uint32_t *)DEVICE_ID2;
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unsigned long s2 = *(uint32_t *)DEVICE_ID3;
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char serial_string[SIZ_STRING_SERIAL + 2U];
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snprintf(serial_string, sizeof(serial_string), "%08lX%08lX%08lX", s0, s1, s2);
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uint8_t idx = 2U;
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const char *p = serial_string;
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while (*p != '\0' && idx < (USB_SIZ_STRING_SERIAL - 1U)) {
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USBD_StringSerial[idx++] = *p++;
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USBD_StringSerial[idx++] = 0x00U;
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}
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}
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