Hello, How send media keys like volume to host using usb hid protocol? For example I using usbd_hid_composite example. I add this code
#define APP_USBD_HID_MEDIA_REPORT_DSC() { \
0x05, 0x0C, /* Usage Page (Consumer) */\
0x09, 0x01, /* Usage (Consumer Control) */\
0x15, 0x00, /* Logical minimum (0) */\
0x25, 0x01, /* Logical maximum (1) */\
0x75, 0x01, /* Report Size (1) */\
0x95, 0x01, /* Report Count (1) */\
0x09, 0xCD, /* Usage (PlayPause) */\
0x81, 0x02, /* Input (Data,Value,Relative,Bit Field) */\
0x0A, 0x83, 0x01, /* Usage (AL Consumer Control Configuration)*/\
0x81, 0x02, /* Input (Data,Value,Relative,Bit Field) */\
0x09, 0xB5, /* Usage (Scan Next Track) */\
0x81, 0x02, /* Input (Data,Value,Relative,Bit Field) */\
0x09, 0xB6, /* Usage (Scan Previous Track) */\
0x81, 0x02, /* Input (Data,Value,Relative,Bit Field) */\
0x09, 0xEA, /* Usage (Volume Down) */\
0x81, 0x02, /* Input (Data,Value,Relative,Bit Field) */\
0x09, 0xE9, /* Usage (Volume Up) */\
0x81, 0x02, /* Input (Data,Value,Relative,Bit Field) */\
0x0A, 0x25, 0x02, /* Usage (AC Forward) */\
0x81, 0x02, /* Input (Data,Value,Relative,Bit Field) */\
0x0A, 0x24, 0x02, /* Usage (AC Back) */\
0x81, 0x02, /* Input (Data,Value,Relative,Bit Field) */\
0xC0 /* End Collection */\
}
in file app_usbd_hid_kbd_desc.h and change APP_USBD_HID_KBD_GLOBAL_DEF
to this
#define APP_USBD_HID_KBD_GLOBAL_DEF(instance_name, interface_number, endpoint, user_ev_handler, subclass_boot) \
APP_USBD_HID_GENERIC_SUBCLASS_REPORT_DESC(keyboard_desc, APP_USBD_HID_KBD_REPORT_DSC()); \
APP_USBD_HID_GENERIC_SUBCLASS_REPORT_DESC(media_desc, APP_USBD_HID_MEDIA_REPORT_DSC()); \
static const app_usbd_hid_subclass_desc_t * keyboard_descs[] = {&keyboard_desc,&media_desc}; \
APP_USBD_HID_KBD_GLOBAL_DEF_INTERNAL(instance_name, \
interface_number, \
endpoint, \
user_ev_handler, \
subclass_boot)
Tell me please how to chose report descriptor and how to setup data for transfer media keys?
Best regards, Anatolii
