Table of Contents
Use stm32cubemx to generate platform source.
1. Pin out setting
Up system clock to 216 Mhz
USB_OTG_FS->Mode->Device Only
Middle wares-> USB_Device-> Human interface device…
2. Source generation and edition.
edit fine usbd_hid.c
…………………………..
__ALIGN_BEGIN static uint8_t USBD_HID_CfgDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN_END =
{
0x09, /* bLength: Configuration Descriptor size */
USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */
USB_HID_CONFIG_DESC_SIZ,
/* wTotalLength: Bytes returned */
0x00,
0x01, /*bNumInterfaces: 1 interface*/
0x01, /*bConfigurationValue: Configuration value*/
0x00, /*iConfiguration: Index of string descriptor describing
the configuration*/
0xE0, /*bmAttributes: bus powered and Support Remote Wake-up */
0x32, /*MaxPower 100 mA: this current is used for detecting Vbus*/
/************** Descriptor of Joystick Mouse interface ****************/
/* 09 */
0x09, /*bLength: Interface Descriptor size*/
USB_DESC_TYPE_INTERFACE,/*bDescriptorType: Interface descriptor type*/
0x00, /*bInterfaceNumber: Number of Interface*/
0x00, /*bAlternateSetting: Alternate setting*/
0x01, /*bNumEndpoints*/
0x03, /*bInterfaceClass: HID*/
0x01, /*bInterfaceSubClass : 1=BOOT, 0=no boot*/
0x01, /*nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse*/
0, /*iInterface: Index of string descriptor*/
/******************** Descriptor of Joystick Mouse HID ********************/
/* 18 */
0x09, /*bLength: HID Descriptor size*/
HID_DESCRIPTOR_TYPE, /*bDescriptorType: HID*/
0x11, /*bcdHID: HID Class Spec release number*/
0x01,
0x00, /*bCountryCode: Hardware target country*/
0x01, /*bNumDescriptors: Number of HID class descriptors to follow*/
0x22, /*bDescriptorType*/
HID_MOUSE_REPORT_DESC_SIZE,/*wItemLength: Total length of Report descriptor*/
0x00,
/******************** 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*/
HID_EPIN_SIZE, /*wMaxPacketSize: 4 Byte max */
0x00,
HID_FS_BINTERVAL, /*bInterval: Polling Interval (10 ms)*/
/* 34 */
} ;
…………………………..
__ALIGN_BEGIN static uint8_t HID_MOUSE_ReportDesc[HID_MOUSE_REPORT_DESC_SIZE] __ALIGN_END =
{
0x05, 0x01,
0x09, 0x06,
0xA1, 0x01,
0x05, 0x07,
0x19, 0xE0,
0x29, 0xE7,
0x15, 0x00,
0x25, 0x01,
0x75, 0x01,
0x95, 0x08,
0x81, 0x02,
0x95, 0x01,
0x75, 0x08,
0x81, 0x01,
0x95, 0x03,
0x75, 0x01,
0x05, 0x08,
0x19, 0x01,
0x29, 0x03,
0x91, 0x02,
0x95, 0x05,
0x75, 0x01,
0x91, 0x01,
0x95, 0x06,
0x75, 0x08,
0x15, 0x00,
0x26, 0xFF,
0x00, 0x05,
0x07, 0x19,
0x00, 0x2A,
0xFF, 0x00,
0x81, 0x00,
0xC0
};
and in Src/main.c
#include “stm32f7xx_hal.h”
#include “usb_device.h”
#include “usbd_hid.h”
#define h 0x0b
#define e 0x08
#define l 0x0f
#define o 0x12
#define w 0x1a
#define r 0x15
#define d 0x07
#define space 0x2c
#define enter 0x28
void SystemClock_Config(void);
void Error_Handler(void);
static void MX_GPIO_Init(void);
extern USBD_HandleTypeDef hUsbDeviceHS;
uint8_t buffer[9];
void keyboard_write(uint8_t char1){
buffer[2]=char1;
USBD_HID_SendReport(&hUsbDeviceHS,buffer,sizeof(buffer));
HAL_Delay(200);
}
int main(void)
{
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USB_DEVICE_Init();
buffer[0]=0x00; //to control Ctrl ,Shift ,Alt ….
buffer[1]=0x00;
buffer[2]=0x0b;
buffer[3]=0x00;
buffer[4]=0x00;
buffer[5]=0x00;
buffer[6]=0x00;
buffer[7]=0x00;
buffer[8]=0x00;
USBD_HID_SendReport(&hUsbDeviceHS,buffer,sizeof(buffer));
while (1)
{
keyboard_write(h);
keyboard_write(e);
keyboard_write(l);
keyboard_write(l);
keyboard_write(o);
keyboard_write(space);
keyboard_write(w);
keyboard_write(o);
keyboard_write(r);
keyboard_write(l);
keyboard_write(d);
keyboard_write(enter);
}
/* USER CODE END 3 */
}
