You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82 lines
2.1 KiB
82 lines
2.1 KiB
/*
|
|
* downstream_hid.c
|
|
*
|
|
* Created on: Apr 10, 2016
|
|
* Author: Robert Fisk
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
|
|
|
|
#include "downstream_hid.h"
|
|
#include "downstream_statemachine.h"
|
|
#include "usbh_hid.h"
|
|
|
|
|
|
|
|
#define HID_MAX_REPORT_LEN 8
|
|
#define HID_MOUSE_DATA_LEN 3
|
|
#define HID_KEYBOARD_DATA_LEN 0
|
|
|
|
|
|
extern USBH_HandleTypeDef hUsbHostFS; //Hard-link ourselves to usb_host.c
|
|
extern InterfaceCommandClassTypeDef ConfiguredDeviceClass; //Do a cheap hard-link to downstream_statemachine.c, rather than keep a duplicate here
|
|
|
|
|
|
|
|
InterfaceCommandClassTypeDef Downstream_HID_ApproveConnectedDevice(void)
|
|
{
|
|
HID_HandleTypeDef* HID_Handle = (HID_HandleTypeDef*)hUsbHostFS.pActiveClass->pData;
|
|
|
|
if (HID_Handle->Protocol == HID_MOUSE_BOOT_CODE)
|
|
{
|
|
if ((HID_Handle->length >= HID_MOUSE_DATA_LEN) && (HID_Handle->length <= HID_MAX_REPORT_LEN))
|
|
{
|
|
return COMMAND_CLASS_HID_MOUSE;
|
|
}
|
|
}
|
|
|
|
return COMMAND_CLASS_INTERFACE; //fail
|
|
}
|
|
|
|
|
|
|
|
void Downstream_HID_PacketProcessor(DownstreamPacketTypeDef* receivedPacket)
|
|
{
|
|
if (receivedPacket->Command != COMMAND_HID_REPORT)
|
|
{
|
|
Downstream_PacketProcessor_FreakOut();
|
|
return;
|
|
}
|
|
|
|
if (USBH_HID_GetInterruptReport(&hUsbHostFS,
|
|
Downstream_HID_InterruptReportCallback,
|
|
receivedPacket) != HAL_OK) //Don't free the packet, USBH_HID will use it then return it to InterruptReportCallback below
|
|
{
|
|
Downstream_PacketProcessor_FreakOut();
|
|
}
|
|
|
|
}
|
|
|
|
|
|
void Downstream_HID_InterruptReportCallback(DownstreamPacketTypeDef* packetToSend)
|
|
{
|
|
if (ConfiguredDeviceClass == COMMAND_CLASS_HID_MOUSE)
|
|
{
|
|
packetToSend->Length16 = ((HID_MOUSE_DATA_LEN + 1) / 2) + DOWNSTREAM_PACKET_HEADER_LEN_16;
|
|
}
|
|
//else if...
|
|
else
|
|
{
|
|
Downstream_PacketProcessor_FreakOut();
|
|
return;
|
|
}
|
|
|
|
Downstream_PacketProcessor_ClassReply(packetToSend);
|
|
}
|
|
|
|
|