STM32F407移植TinyUSB

可以使用标准库进行移植但使用cubemx移植更加方便我这里就使用stm32cubemx进行移植了首先新建工程配置RCC配置定时器产生1ms中断个tinyusb使用开启更新中断配置USB为设备模式但是不要选择类后续由tinyusb接管开启中断修改USB中断优先级配置系统时钟点击右上角生成代码打开工程编译后0报错即可开始下一步从官网下载tinyusb源码放入工程中打开魔法笔勾选GNU extensions然后新建分组添加源码然后配置文件路径再次打开魔法棒选择tinyusb的src路径根据自己路径来然后需要移植config文件作为配置文件我们从官方示例中移植修改先导航到一个基础示例我们把这个配置文件放到inc然后添加到工程中打开文件添加这两行代码这里是配置哪个板子配置为设备模式和全速模式把这个配置从2改为1修改这个配置并在结尾之前添加修改buff大小删除这三行因为上面已经判断了然后开始解决编译器问题要排除armgcc选项打开这个文件找到#if defined(__GNUC__) || defined(__ICCARM__) || defined(__TI_COMPILER_VERSION__)改为#if (defined(__GNUC__) !defined(__CC_ARM)) || defined(__ICCARM__) || defined(__TI_COMPILER_VERSION__)在#elif defined(__CCRX__)分支之后#else之前新增分支#elif defined(__CC_ARM) || (defined(__ARMCC_VERSION) __ARMCC_VERSION 6000000) // Keil armcc (AC5): supports GNU-style attributes subset, no __has_attribute/__builtin_bswap* #define TU_ATTR_ALIGNED(Bytes) __attribute__((aligned(Bytes))) #define TU_ATTR_SECTION(sec_name) __attribute__((section(#sec_name))) #define TU_ATTR_PACKED __attribute__((packed)) #define TU_ATTR_WEAK __attribute__((weak)) #ifndef TU_ATTR_ALWAYS_INLINE #define TU_ATTR_ALWAYS_INLINE #endif #define TU_ATTR_DEPRECATED(mess) __attribute__((deprecated)) #define TU_ATTR_UNUSED __attribute__((unused)) #define TU_ATTR_USED __attribute__((used)) #define TU_ATTR_FALLTHROUGH do {} while (0) #define TU_ATTR_PACKED_BEGIN #define TU_ATTR_PACKED_END #define TU_ATTR_BIT_FIELD_ORDER_BEGIN #define TU_ATTR_BIT_FIELD_ORDER_END // ARM Cortex-M is little-endian #define TU_BYTE_ORDER TU_LITTLE_ENDIAN #define TU_BITFIELD_ORDER TU_BITFIELD_LE // Portable C implementation (compiler optimizes to REV/REV16 instructions) #define TU_BSWAP16(u16) (uint16_t)(((uint16_t)(u16) 8) | ((uint16_t)(u16) 8)) #define TU_BSWAP32(u32) ((((uint32_t)(u32) 0xFF000000u) 24) | \ (((uint32_t)(u32) 0x00FF0000u) 8) | \ (((uint32_t)(u32) 0x0000FF00u) 8) | \ (((uint32_t)(u32) 0x000000FFu) 24))然后需要新建一个usb_descriptors.c文件位置可以放在之前config的位置内容如下#include tusb.h #define USB_VID 0xCafe #define USB_PID 0x4001 #define USB_BCD 0x0200 //-------------------------------------------------------------------- // Device Descriptor //-------------------------------------------------------------------- static tusb_desc_device_t const desc_device { .bLength sizeof(tusb_desc_device_t), .bDescriptorType TUSB_DESC_DEVICE, .bcdUSB USB_BCD, .bDeviceClass TUSB_CLASS_MISC, .bDeviceSubClass MISC_SUBCLASS_COMMON, .bDeviceProtocol MISC_PROTOCOL_IAD, .bMaxPacketSize0 CFG_TUD_ENDPOINT0_SIZE, .idVendor USB_VID, .idProduct USB_PID, .bcdDevice 0x0100, .iManufacturer 0x01, .iProduct 0x02, .iSerialNumber 0x03, .bNumConfigurations 0x01 }; uint8_t const *tud_descriptor_device_cb(void) { return (uint8_t const *) desc_device; } //-------------------------------------------------------------------- // Configuration Descriptor //-------------------------------------------------------------------- enum { ITF_NUM_CDC 0, ITF_NUM_CDC_DATA, ITF_NUM_TOTAL }; #define EPNUM_CDC_NOTIF 0x81 #define EPNUM_CDC_OUT 0x02 #define EPNUM_CDC_IN 0x82 #define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN TUD_CDC_DESC_LEN) static uint8_t const desc_fs_configuration[] { TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100), TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64), }; uint8_t const *tud_descriptor_configuration_cb(uint8_t index) { (void) index; return desc_fs_configuration; } //-------------------------------------------------------------------- // String Descriptors //-------------------------------------------------------------------- static char const *string_desc_arr[] { (const char[]) { 0x09, 0x04 }, // 0: English (0x0409) TinyUSB, // 1: Manufacturer STM32F407 CDC, // 2: Product 1234567890ABCDEF, // 3: Serial TinyUSB CDC, // 4: CDC Interface }; static uint16_t _desc_str[32 1]; uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) { (void) langid; size_t chr_count; switch (index) { case 0: memcpy(_desc_str[1], string_desc_arr[0], 2); chr_count 1; break; default: if (!(index sizeof(string_desc_arr) / sizeof(string_desc_arr[0]))) { return NULL; } const char *str string_desc_arr[index]; chr_count strlen(str); size_t const max_count sizeof(_desc_str) / sizeof(_desc_str[0]) - 1; if (chr_count max_count) chr_count max_count; for (size_t i 0; i chr_count; i) { _desc_str[1 i] str[i]; } break; } _desc_str[0] (uint16_t) ((TUSB_DESC_STRING 8) | (2 * chr_count 2)); return _desc_str; }然后开始修改main.c首先添加头文件#include tusb.h #include stdio.h #include stdarg.h添加全局变量volatile uint32_t g_usb_millis 0;然后启动定时器并对tinyusb进行初始化HAL_TIM_Base_Start_IT(htim1); // start TIM1 1ms time base before tusb_init tusb_rhport_init_t dev_init { .role TUSB_ROLE_DEVICE, .speed TUSB_SPEED_FULL }; tusb_init(BOARD_TUD_RHPORT, dev_init);然后在底部实现uint32_t tusb_time_millis_api(void) { return g_usb_millis; } void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { if (htim-Instance TIM1) { g_usb_millis; } }main的while调用tud_task(); uint8_t b; while (tud_cdc_available()) { tud_cdc_read(b, 1); tud_cdc_write_char(b); } tud_cdc_write_flush();