前言
本篇要接續上一篇【STM32】USB HID Mouse，把HID descripotr改為keyboard + mouse
1. HID Descriptor
這裡的都是從HID Descriptor Tool的keybrd.hid 加上 mouse.hid，因為是兩個裝置所以有2個endpoint
descriptor要分別加上REPORT_ID (1)和REPORT_ID (2)
usbd_hid.c
修改HID_MOUSE_ReportDesc[]
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x06, // USAGE (Keyboard)
0xa1, 0x01, // COLLECTION (Application)
0x85, 0x01, // REPORT_ID (1)
0x05, 0x07, // USAGE_PAGE (Keyboard)
0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x95, 0x08, // REPORT_COUNT (8)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0x81, 0x03, // INPUT (Cnst,Var,Abs)
0x95, 0x05, // REPORT_COUNT (5)
0x75, 0x01, // REPORT_SIZE (1)
0x05, 0x08, // USAGE_PAGE (LEDs)
0x19, 0x01, // USAGE_MINIMUM (Num Lock)
0x29, 0x05, // USAGE_MAXIMUM (Kana)
0x91, 0x02, // OUTPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x03, // REPORT_SIZE (3)
0x91, 0x03, // OUTPUT (Cnst,Var,Abs)
0x95, 0x06, // REPORT_COUNT (6)
0x75, 0x08, // REPORT_SIZE (8)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x65, // LOGICAL_MAXIMUM (101)
0x05, 0x07, // USAGE_PAGE (Keyboard)
0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
0x81, 0x00, // INPUT (Data,Ary,Abs)
0xc0, // END_COLLECTION
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x02, // USAGE (Mouse)
0xa1, 0x01, // COLLECTION (Application)
0x85, 0x02, // REPORT_ID (2)
0x09, 0x01, // USAGE (Pointer)
0xa1, 0x00, // COLLECTION (Physical)
0x05, 0x09, // USAGE_PAGE (Button)
0x19, 0x01, // USAGE_MINIMUM (Button 1)
0x29, 0x03, // USAGE_MAXIMUM (Button 3)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x95, 0x03, // REPORT_COUNT (3)
0x75, 0x01, // REPORT_SIZE (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x05, // REPORT_SIZE (5)
0x81, 0x03, // INPUT (Cnst,Var,Abs)
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x30, // USAGE (X)
0x09, 0x31, // USAGE (Y)
0x15, 0x81, // LOGICAL_MINIMUM (-127)
0x25, 0x7f, // LOGICAL_MAXIMUM (127)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x02, // REPORT_COUNT (2)
0x81, 0x06, // INPUT (Data,Var,Rel)
0xc0, // END_COLLECTION
0xc0 // END_COLLECTION
usbd_hid.h
HID_MOUSE_REPORT_DESC_SIZE 長度修改為117 bytes
#define HID_MOUSE_REPORT_DESC_SIZE 117U
usbd_hid.c
修改HID_MOUSE_ReportDesc[]，最後再加一個endpoint descriptor
byte 27~34是本來存在的，wMaxPacketSize的HID_EPIN_SIZE看是要改成10，或者直接寫上10
byte 34~41再加上另一個endpoint
/******************** Descriptor of Mouse endpoint ********************/
/* 27 */
0x07, /*bLength: Endpoint Descriptor size*/
USB_DESC_TYPE_ENDPOINT, /*bDescriptorType:*/
HID_EPIN_ADDR, /*bEndpointAddress: Endpoint Address (IN)*/
0x03, /*bmAttributes: Interrupt endpoint*/
10,//HID_EPIN_SIZE, /*wMaxPacketSize: 4 Byte max */
0x00,
HID_FS_BINTERVAL, /*bInterval: Polling Interval */
/* 34 */
/******************** Descriptor of second endpoint ********************/
0x07, /*bLength: Endpoint Descriptor size*/
USB_DESC_TYPE_ENDPOINT, /*bDescriptorType:*/
0x01, /*bEndpointAddress: Endpoint Address (OUT)*/
0x03, /*bmAttributes: Interrupt endpoint*/
1,//HID_EPIN_SIZE,
0x00,
HID_FS_BINTERVAL, /*bInterval: Polling Interval */
/* 41 */
};
usbd_hid.h
USB_HID_CONFIG_DESC_SIZ長度改為41
#define USB_HID_CONFIG_DESC_SIZ 41U
main.c
應用程式在按下User button(PA0)時輸入'a'，依次遞增，並且按下滑鼠右鍵
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "usbd_hid.h"
/* USER CODE END Includes */
while (1)
{
/* USER CODE BEGIN 3 */
extern USBD_HandleTypeDef hUsbDeviceFS;
static uint8_t key = 0x04;//'a'
uint8_t KeyBoard[9] = {1,0,0,key,0,0,0,0,0};
int8_t Mouse[4] = {2,0,0,0};
if(HAL_GPIO_ReadPin(B1_GPIO_Port, B1_Pin) == 1)
{
KeyBoard[3] = key++;
USBD_HID_SendReport(&hUsbDeviceFS,(uint8_t*)&KeyBoard,sizeof(KeyBoard));
HAL_Delay(15);
KeyBoard[3] = 0;
USBD_HID_SendReport(&hUsbDeviceFS,(uint8_t*)&KeyBoard,sizeof(KeyBoard));
HAL_Delay(15);
// Mouse-Right key
Mouse[1] = 0x02;
USBD_HID_SendReport(&hUsbDeviceFS,(uint8_t*)&Mouse, 4);
HAL_Delay(15);
Mouse[1] = 0x00;
USBD_HID_SendReport(&hUsbDeviceFS,(uint8_t*)&Mouse, 4);
HAL_Delay(300);
}
}
