Usb通信协议应用
通过USBD_HID_SendReport()函数上报鼠标的右键事件。
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USB_DEVICE_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* 鼠标右键点击 */
MouseData1[0] = 0x02;
USBD_HID_SendReport(&hUsbDeviceFS,(uint8_t*)&MouseData1,sizeof(MouseData1));
HAL_Delay(1000);
/*鼠标右键松开 */
MouseData1[0] = 0x00;
USBD_HID_SendReport(&hUsbDeviceFS,(uint8_t*)&MouseData1,sizeof(MouseData1));
HAL_Delay(1000);
}
/* USER CODE END 3 */
}这种方式只是简单的实现了鼠标反复点击右键的功能，接下来需要通过STM32f103c8t6芯片实现鼠标的左右按键控制。
添加了对于按键状态的获取模块
unsigned char Get_key_num(void)
{
//PIN1 是鼠标右键，PIN11 是鼠标左键
if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)==0)
{
HAL_Delay(20); //按键消抖操作
while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)==0);
HAL_Delay(20);
keyNum = 1;
}
if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_11)==0)
{
HAL_Delay(20);
while(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_11)==0);
HAL_Delay(20);
keyNum = 2;
}
return keyNum;
}int main(void)
{
//unsigned char keyNumLast;
//int cnt;
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USB_DEVICE_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
keyNum = Get_key_num();
if(keyNum == 1)
{
MouseData1[0] = 0x02; //鼠标右键按下
USBD_HID_SendReport(&hUsbDeviceFS,(uint8_t*)&MouseData1,sizeof(MouseData1));
}
if(keyNum == 2)
{
MouseData1[0]=0x01; //鼠标左键按下
USBD_HID_SendReport(&hUsbDeviceFS,(uint8_t*)&MouseData1,sizeof(MouseData1));
}
}
}