首先要感谢EEPW给这次学习的机会。
本次学习使用PAJ7620U2和STM32H503-USBHIDkeyboard枚举，实现USB虚拟键盘功能，达到控制PPT翻页的效果。
识别手势：上、下、左、右、靠近、远离、顺时针旋转、逆时针旋转、挥动。
控制PPT翻页：上左：上一页，下右：下一页，靠近：跳转到第一页、远离：跳转到最后一页，顺时针旋转：F5播放PPT，逆时针旋转：ECS退出播放PPT。
课程2中已经实现了I2C读写PAJ7620U2功能，这里就不做过多介绍。没有实现的同学可以跳转过去看一眼。
课程2：https://forum.eepw.com.cn/thread/382661/1
本次课程中，重新整理了下PAJ7620U2的代码，作为一个.h/.c文件单独存放，方便USB应用调用。
.h/.c文件中，USB主要用到读取PAJ7620U2手势识别函数和键值宏定义值。
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : paj7620u2.h
* @brief : Header for paj7620u2.c file.
* This file contains the common defines of the application.
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
*
*
******************************************************************************
*/
/* USER CODE END Header */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __PAJ7620U2_H
#define __PAJ7620U2_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32h5xx_hal.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */
/* USER CODE END ET */
/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */
/* USER CODE END EC */
/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */
/* USER CODE END EM */
/* Exported functions prototypes ---------------------------------------------*/
/* USER CODE BEGIN EFP */
uint8_t paj7620_init(void); //PAJ7620U2初始化函数
void getGesture(void); //PAJ7620U2获取手势识别函数
uint16_t ReadGesture(void); //PAJ7620U2获取手势识别函数
void user_function_gesture(uint8_t status); //手势控制继电器开关灯函数
/* USER CODE END EFP */
/* Private defines -----------------------------------------------------------*/
/* USER CODE BEGIN Private defines */
//PAJ7620地址寄存器定义
#define PAJ7620_I2C_ADDRESS 0x73<<1 //paj7620的i2c地址，7bit
#define PAJ_BANK_SELECT 0xEF //寄存器页选择寄存器：Bank0=0x00, Bank1=0x01
#define PAJ_INT_FLAG1 0x43 //检测结果数据低八位数据所在地址
#define PAJ_INT_FLAG2 0x44 //检测结果数据高八位数据所在地址
//手势状态
#define PAJ_UP 0x01 //上
#define PAJ_DOWN 0x02 //下
#define PAJ_LEFT 0x04 //左
#define PAJ_RIGHT 0x08 //右
#define PAJ_FORWARD 0x10 //接近
#define PAJ_BACKWARD 0x20 //远离
#define PAJ_CLOCKWISE 0x40 //顺时针旋转
#define PAJ_ANTI_CLOCKWISE 0x80 //逆时针旋转
#define PAJ_WAVE 0x100 //挥动
/* USER CODE END Private defines */
#ifdef __cplusplus
}
#endif
#endif /* __PAJ7620U2_H *//* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : paj7620u2.c
* @brief : paj7620u2 program body
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
*
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "paj7620u2.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "i2c.h"
#include "usart.h"
#include "gpio.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
//继电器控制灯IO定义
#define LED0_ON HAL_GPIO_WritePin(GPIOC, GPIO_PIN_10, GPIO_PIN_SET);
#define LED0_OFF HAL_GPIO_WritePin(GPIOC, GPIO_PIN_10, GPIO_PIN_RESET);
#define LED0_TOG HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_10);
#define LED1_ON HAL_GPIO_WritePin(GPIOC, GPIO_PIN_11, GPIO_PIN_SET);
#define LED1_OFF HAL_GPIO_WritePin(GPIOC, GPIO_PIN_11, GPIO_PIN_RESET);
#define LED1_TOG HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_11);
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
//PAJ7620初始化寄存器数组：219组
uint8_t Paj7620Init_Reg_Array[][2] = {
{0xEF, 0x00},
{0x32, 0x29},
{0x33, 0x01},
{0x34, 0x00},
{0x35, 0x01},
{0x36, 0x00},
{0x37, 0x07},
{0x38, 0x17},
{0x39, 0x06},
{0x3A, 0x12},
{0x3F, 0x00},
{0x40, 0x02},
{0x41, 0xFF},
{0x42, 0x01},
{0x46, 0x2D},
{0x47, 0x0F},
{0x48, 0x3C},
{0x49, 0x00},
{0x4A, 0x1E},
{0x4B, 0x00},
{0x4C, 0x20},
{0x4D, 0x00},
{0x4E, 0x1A},
{0x4F, 0x14},
{0x50, 0x00},
{0x51, 0x10},
{0x52, 0x00},
{0x5C, 0x02},
{0x5D, 0x00},
{0x5E, 0x10},
{0x5F, 0x3F},
{0x60, 0x27},
{0x61, 0x28},
{0x62, 0x00},
{0x63, 0x03},
{0x64, 0xF7},
{0x65, 0x03},
{0x66, 0xD9},
{0x67, 0x03},
{0x68, 0x01},
{0x69, 0xC8},
{0x6A, 0x40},
{0x6D, 0x04},
{0x6E, 0x00},
{0x6F, 0x00},
{0x70, 0x80},
{0x71, 0x00},
{0x72, 0x00},
{0x73, 0x00},
{0x74, 0xF0},
{0x75, 0x00},
{0x80, 0x42},
{0x81, 0x44},
{0x82, 0x04},
{0x83, 0x20},
{0x84, 0x20},
{0x85, 0x00},
{0x86, 0x10},
{0x87, 0x00},
{0x88, 0x05},
{0x89, 0x18},
{0x8A, 0x10},
{0x8B, 0x01},
{0x8C, 0x37},
{0x8D, 0x00},
{0x8E, 0xF0},
{0x8F, 0x81},
{0x90, 0x06},
{0x91, 0x06},
{0x92, 0x1E},
{0x93, 0x0D},
{0x94, 0x0A},
{0x95, 0x0A},
{0x96, 0x0C},
{0x97, 0x05},
{0x98, 0x0A},
{0x99, 0x41},
{0x9A, 0x14},
{0x9B, 0x0A},
{0x9C, 0x3F},
{0x9D, 0x33},
{0x9E, 0xAE},
{0x9F, 0xF9},
{0xA0, 0x48},
{0xA1, 0x13},
{0xA2, 0x10},
{0xA3, 0x08},
{0xA4, 0x30},
{0xA5, 0x19},
{0xA6, 0x10},
{0xA7, 0x08},
{0xA8, 0x24},
{0xA9, 0x04},
{0xAA, 0x1E},
{0xAB, 0x1E},
{0xCC, 0x19},
{0xCD, 0x0B},
{0xCE, 0x13},
{0xCF, 0x64},
{0xD0, 0x21},
{0xD1, 0x0F},
{0xD2, 0x88},
{0xE0, 0x01},
{0xE1, 0x04},
{0xE2, 0x41},
{0xE3, 0xD6},
{0xE4, 0x00},
{0xE5, 0x0C},
{0xE6, 0x0A},
{0xE7, 0x00},
{0xE8, 0x00},
{0xE9, 0x00},
{0xEE, 0x07},
{0xEF, 0x01},
{0x00, 0x1E},
{0x01, 0x1E},
{0x02, 0x0F},
{0x03, 0x10},
{0x04, 0x02},
{0x05, 0x00},
{0x06, 0xB0},
{0x07, 0x04},
{0x08, 0x0D},
{0x09, 0x0E},
{0x0A, 0x9C},
{0x0B, 0x04},
{0x0C, 0x05},
{0x0D, 0x0F},
{0x0E, 0x02},
{0x0F, 0x12},
{0x10, 0x02},
{0x11, 0x02},
{0x12, 0x00},
{0x13, 0x01},
{0x14, 0x05},
{0x15, 0x07},
{0x16, 0x05},
{0x17, 0x07},
{0x18, 0x01},
{0x19, 0x04},
{0x1A, 0x05},
{0x1B, 0x0C},
{0x1C, 0x2A},
{0x1D, 0x01},
{0x1E, 0x00},
{0x21, 0x00},
{0x22, 0x00},
{0x23, 0x00},
{0x25, 0x01},
{0x26, 0x00},
{0x27, 0x39},
{0x28, 0x7F},
{0x29, 0x08},
{0x30, 0x03},
{0x31, 0x00},
{0x32, 0x1A},
{0x33, 0x1A},
{0x34, 0x07},
{0x35, 0x07},
{0x36, 0x01},
{0x37, 0xFF},
{0x38, 0x36},
{0x39, 0x07},
{0x3A, 0x00},
{0x3E, 0xFF},
{0x3F, 0x00},
{0x40, 0x77},
{0x41, 0x40},
{0x42, 0x00},
{0x43, 0x30},
{0x44, 0xA0},
{0x45, 0x5C},
{0x46, 0x00},
{0x47, 0x00},
{0x48, 0x58},
{0x4A, 0x1E},
{0x4B, 0x1E},
{0x4C, 0x00},
{0x4D, 0x00},
{0x4E, 0xA0},
{0x4F, 0x80},
{0x50, 0x00},
{0x51, 0x00},
{0x52, 0x00},
{0x53, 0x00},
{0x54, 0x00},
{0x57, 0x80},
{0x59, 0x10},
{0x5A, 0x08},
{0x5B, 0x94},
{0x5C, 0xE8},
{0x5D, 0x08},
{0x5E, 0x3D},
{0x5F, 0x99},
{0x60, 0x45},
{0x61, 0x40},
{0x63, 0x2D},
{0x64, 0x02},
{0x65, 0x96},
{0x66, 0x00},
{0x67, 0x97},
{0x68, 0x01},
{0x69, 0xCD},
{0x6A, 0x01},
{0x6B, 0xB0},
{0x6C, 0x04},
{0x6D, 0x2C},
{0x6E, 0x01},
{0x6F, 0x32},
{0x71, 0x00},
{0x72, 0x01},
{0x73, 0x35},
{0x74, 0x00},
{0x75, 0x33},
{0x76, 0x31},
{0x77, 0x01},
{0x7C, 0x84},
{0x7D, 0x03},
{0x7E, 0x01},
};
//继电器控制灯状态
uint8_t LED_Status;
/* USER CODE END PV */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
//PAJ7620U2初始化，返回0则初始化失败
uint8_t paj7620_init(void)
{
uint8_t i,State,n;
State = 0;
while(HAL_OK != HAL_I2C_Mem_Write(&hi2c1, PAJ7620_I2C_ADDRESS, PAJ_BANK_SELECT, I2C_MEMADD_SIZE_8BIT, &State, 1, 500))
{
HAL_Delay(5);
printf("paj7620_init err: 1 \r\n");
}
for(i=0; i<219; i++)
{
while(HAL_OK != HAL_I2C_Mem_Write(&hi2c1, PAJ7620_I2C_ADDRESS, Paj7620Init_Reg_Array[i][0], I2C_MEMADD_SIZE_8BIT, &Paj7620Init_Reg_Array[i][1], 1, 500))
{
HAL_Delay(5);
printf("paj7620_init err: 2 \r\n");
}
HAL_Delay(5);
}
while(HAL_OK != HAL_I2C_Mem_Write(&hi2c1, PAJ7620_I2C_ADDRESS, PAJ_BANK_SELECT, I2C_MEMADD_SIZE_8BIT,&State,1,500))
{
HAL_Delay(5);
printf("paj7620_init err: 3 \r\n");
}
HAL_Delay(5);
while(HAL_OK != HAL_I2C_Mem_Read(&hi2c1, PAJ7620_I2C_ADDRESS, 0x32, I2C_MEMADD_SIZE_8BIT, &n, 1, 500))
{
HAL_Delay(5);
printf("paj7620_init err: 4 \r\n");
}
if(n != 0x29)
{
return 0;
}
return 1;
}
//检测手势并输出
void getGesture(void)
{
uint8_t Data[2]={0,0};
uint16_t Gesture_Data;
HAL_I2C_Mem_Read(&hi2c1, PAJ7620_I2C_ADDRESS, PAJ_INT_FLAG1, I2C_MEMADD_SIZE_8BIT, &Data[0], 1, 500);
HAL_Delay(5);
HAL_I2C_Mem_Read(&hi2c1, PAJ7620_I2C_ADDRESS, PAJ_INT_FLAG2, I2C_MEMADD_SIZE_8BIT, &Data[1], 1, 500);
HAL_Delay(5);
Gesture_Data = (Data[1]<<8) | Data[0];
//printf("\n %x \r\n", Gesture_Data);
if(Gesture_Data != 0)
{
//printf("\n %x \r\n", Gesture_Data);
switch(Gesture_Data)
{
case PAJ_UP: printf("Up\r\n"); LED_Status=1; break;
case PAJ_DOWN: printf("Down\r\n"); LED_Status=2; break;
case PAJ_LEFT: printf("Left\r\n"); LED_Status=3; break;
case PAJ_RIGHT: printf("Right\r\n"); LED_Status=4; break;
case PAJ_FORWARD: printf("Forward\r\n"); LED_Status=5; break;
case PAJ_BACKWARD: printf("Backward\r\n"); LED_Status=6; break;
case PAJ_CLOCKWISE: printf("Clockwise\r\n"); LED_Status=7; break;
case PAJ_ANTI_CLOCKWISE: printf("AntiClockwise\r\n"); LED_Status=8; break;
case PAJ_WAVE: printf("Wave\r\n"); LED_Status=9; break;
default: break;
}
Gesture_Data = 0;
}
}
//检测手势并输出
uint16_t ReadGesture(void)
{
uint8_t Data[2]={0,0};
uint16_t Gesture_Data;
HAL_I2C_Mem_Read(&hi2c1, PAJ7620_I2C_ADDRESS, PAJ_INT_FLAG1, I2C_MEMADD_SIZE_8BIT, &Data[0], 1, 500);
HAL_Delay(5);
HAL_I2C_Mem_Read(&hi2c1, PAJ7620_I2C_ADDRESS, PAJ_INT_FLAG2, I2C_MEMADD_SIZE_8BIT, &Data[1], 1, 500);
HAL_Delay(5);
Gesture_Data = (Data[1]<<8) | Data[0];
//printf("\n %x \r\n", Gesture_Data);
if(Gesture_Data != 0)
{
//printf("\n %x \r\n", Gesture_Data);
switch(Gesture_Data)
{
case PAJ_UP: printf("Up\r\n"); return PAJ_UP; break;
case PAJ_DOWN: printf("Down\r\n"); return PAJ_DOWN; break;
case PAJ_LEFT: printf("Left\r\n"); return PAJ_LEFT; break;
case PAJ_RIGHT: printf("Right\r\n"); return PAJ_RIGHT; break;
case PAJ_FORWARD: printf("Forward\r\n"); return PAJ_FORWARD; break;
case PAJ_BACKWARD: printf("Backward\r\n"); return PAJ_BACKWARD; break;
case PAJ_CLOCKWISE: printf("Clockwise\r\n"); return PAJ_CLOCKWISE; break;
case PAJ_ANTI_CLOCKWISE: printf("AntiClockwise\r\n"); return PAJ_ANTI_CLOCKWISE; break;
case PAJ_WAVE: printf("Wave\r\n"); return PAJ_WAVE; break;
default: break;
}
Gesture_Data = 0;
}
return 0;
}
//手势控制继电器开关灯
void user_function_gesture(uint8_t status)
{
switch(status)
{
case 1: //PAJ_UP
LED0_ON;
LED1_ON;
//printf("LED_Status: 1 \r\n");
break;
case 2: //PAJ_DOWN
LED0_OFF;
LED1_OFF;
//printf("LED_Status: 2 \r\n");
break;
case 3: //PAJ_LEFT
LED0_ON;
LED1_OFF;
//printf("LED_Status: 3 \r\n");
break;
case 4: //PAJ_RIGHT
LED0_OFF;
LED1_ON;
//printf("LED_Status: 4 \r\n");
break;
case 5: //PAJ_FORWARD
LED0_TOG;
//printf("LED_Status: 5 \r\n");
break;
case 6: //PAJ_BACKWARD
LED1_TOG;
//printf("LED_Status: 6 \r\n");
break;
case 7: //PAJ_CLOCKWISE
//printf("LED_Status: 7 \r\n");
break;
case 8: //PAJ_COUNT_CLOCKWISE
//printf("LED_Status: 8 \r\n");
break;
case 9: //PAJ_WAVE
LED0_TOG;
LED1_TOG;
//printf("LED_Status: 9 \r\n");
break;
default:
break;
}
}
/* USER CODE END 0 */PAJ7620U2的初始化可以放在USB函数里面，也可以放在main()函数里面。这个看个人喜欢。
下面就重点讲下USBHIDKeyboard的枚举。参考了很多大神的作品，还是琢磨了很久才成功。这里就详细贴出来吧。
一、准备工作，硬件配置
1、NUCLEO-H503RB开发板套件；
2、PAJ7620U2手势识别小板：接线同课程2（I2C接口使用PB6/PB7）；
3、Type-C线。
二、软件配置
在课程2的基础上，增加USBHIDKeyboard功能，I2C配置就不做过多说明。首先打开课程2的工程。
1、确认PAJ7620U2的I2C是否配置正确。
2、设置系统时基。
3、打开USB外设。
4、打开THREADX。
5、打开USBX。
6、设置中断。
7、确认系统时钟。
8、导出代码。
三、代码编写。
1、清除掉课程2中main()函数的PAJ7620U2相关代码，保留初始化，加入PAJ7620U2的.h/.c代码。
2、修改ux_device_keyboard.c代码。
1、定义hid_keyboard； UX_SLAVE_CLASS_HID *hid_keyboard; 2、修改VOID USBD_HID_Keyboard_Activate(VOID *hid_instance) /* USER CODE BEGIN USBD_HID_Keyboard_Activate */ //UX_PARAMETER_NOT_USED(hid_instance); hid_keyboard = (UX_SLAVE_CLASS_HID*)hid_instance; /* USER CODE END USBD_HID_Keyboard_Activate */
hid_keyboard定义会在device中用到，所以需要在头文件中声明。
3、修改app_usbx_device.c代码。
#include "usb.h" #include "paj7620u2.h" static TX_THREAD ux_hid_read_thread; static VOID usbx_hidkeyboard_thread_entry(ULONG thread_input); VOID USBX_APP_Device_Init(VOID);
在UINT MX_USBX_Device_Init(VOID *memory_ptr)和static VOID app_ux_device_thread_entry(ULONG thread_input)函数中增加代码。
/* Allocate the stack for usbx hid thread */
if (tx_byte_allocate(byte_pool, (VOID **) &pointer, 1024, TX_NO_WAIT) != TX_SUCCESS)
{
return TX_POOL_ERROR;
}
/* Create the usbx hid thread */
if (tx_thread_create(&ux_hid_read_thread, "hid_acm_read_usbx_app_thread_entry",
usbx_hidkeyboard_thread_entry, 1, pointer,
1024, 20, 20, TX_NO_TIME_SLICE,
TX_AUTO_START) != TX_SUCCESS)
{
return TX_THREAD_ERROR;
}
//TX_PARAMETER_NOT_USED(thread_input);
//初始化USB设备
USBX_APP_Device_Init();编写自定义函数：static VOID usbx_hidkeyboard_thread_entry(ULONG thread_input)。
/**
* @brief 实现usbx hidkeyboard线程入口的函数
* @param 线程输入：用户线程输入参数
* @retval none
*/
static VOID usbx_hidkeyboard_thread_entry(ULONG thread_input)
{
/* USER CODE BEGIN app_ux_device_thread_entry */
UX_SLAVE_DEVICE *device;
UX_SLAVE_CLASS_HID_EVENT hid_event;
TX_PARAMETER_NOT_USED(thread_input);
device = &_ux_system_slave->ux_system_slave_device;
ux_utility_memory_set(&hid_event, 0, sizeof(UX_SLAVE_CLASS_HID_EVENT));
while(1)
{
/* Check if the device state already configured */
if((device->ux_slave_device_state == UX_DEVICE_CONFIGURED) && (hid_keyboard != UX_NULL))
{
/* sleep for 10ms */
tx_thread_sleep(MS_TO_TICK(100));
hid_event.ux_device_class_hid_event_length = 8;
hid_event.ux_device_class_hid_event_buffer[0] = 0;
hid_event.ux_device_class_hid_event_buffer[1] = 0;
uint16_t Gesture_Data = ReadGesture();
if(Gesture_Data != 0)
{
switch (Gesture_Data)
{
case PAJ_UP: hid_event.ux_device_class_hid_event_buffer[2] = 0x4B; break; //Keyboard PageUp
case PAJ_DOWN: hid_event.ux_device_class_hid_event_buffer[2] = 0x4E; break; //Keyboard PageDown
case PAJ_LEFT: hid_event.ux_device_class_hid_event_buffer[2] = 0x50; break; //Keyboard LeftArrow
case PAJ_RIGHT: hid_event.ux_device_class_hid_event_buffer[2] = 0x4F; break; //Keyboard RightArrow
case PAJ_FORWARD: hid_event.ux_device_class_hid_event_buffer[2] = 0x4A; break; //Keyboard Home
case PAJ_BACKWARD: hid_event.ux_device_class_hid_event_buffer[2] = 0x4D; break; //Keyboard End
case PAJ_CLOCKWISE: hid_event.ux_device_class_hid_event_buffer[2] = 0x3E; break; //Keyboard F5
case PAJ_ANTI_CLOCKWISE: hid_event.ux_device_class_hid_event_buffer[2] = 0x29; break; //Keyboard Esc
case PAJ_WAVE: break;
default: break;
}
ux_device_class_hid_event_set(hid_keyboard, &hid_event);
}else
{
hid_event.ux_device_class_hid_event_buffer[2] = 0;
ux_device_class_hid_event_set(hid_keyboard, &hid_event);
}
}else
{
/* sleep for 10ms */
tx_thread_sleep(MS_TO_TICK(10));
}
HAL_Delay(100);
HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);
}
/* USER CODE END app_ux_device_thread_entry */
}编写自定义函数：VOID USBX_APP_Device_Init(VOID)。
/**
* @brief USBX初始化
* @param none
* @retval none
*/
VOID USBX_APP_Device_Init(VOID)
{
/* USER CODE BEGIN USB_Device_Init_PreTreatment_0 */
/* USER CODE END USB_Device_Init_PreTreatment_0 */
/* initialize the device controller HAL driver */
MX_USB_PCD_Init();
/* USER CODE BEGIN USB_Device_Init_PreTreatment_1 */
HAL_PCDEx_PMAConfig(&hpcd_USB_DRD_FS, 0x00, PCD_SNG_BUF, 0x14);
HAL_PCDEx_PMAConfig(&hpcd_USB_DRD_FS, 0x80, PCD_SNG_BUF, 0x54);
HAL_PCDEx_PMAConfig(&hpcd_USB_DRD_FS, 0x81, PCD_SNG_BUF, 0x94);
HAL_PCDEx_PMAConfig(&hpcd_USB_DRD_FS, 0x01, PCD_SNG_BUF, 0xD4);
HAL_PCDEx_PMAConfig(&hpcd_USB_DRD_FS, 0x82, PCD_SNG_BUF, 0x114);
/* USER CODE END USB_Device_Init_PreTreatment_1 */
/* Initialize and link controller HAL driver */
ux_dcd_stm32_initialize((ULONG)USB_DRD_FS, (ULONG)&hpcd_USB_DRD_FS);
/* Start the USB device */
HAL_PCD_Start(&hpcd_USB_DRD_FS);
/* USER CODE BEGIN USB_Device_Init_PostTreatment */
/* USER CODE END USB_Device_Init_PostTreatment */
}至此整个手势翻页笔代码已经完成。编译下载。
四、结果输出。
完结！共进！
有点不太懂
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