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.
153 lines
3.5 KiB
153 lines
3.5 KiB
/*
|
|
* upstream_hid.c
|
|
*
|
|
* Created on: Jan 16, 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 "upstream_hid.h"
|
|
#include "upstream_spi.h"
|
|
#include "upstream_interface_def.h"
|
|
|
|
|
|
#define HID_REPORT_DATA_LEN 8
|
|
#define HID_MOUSE_DATA_LEN 4
|
|
|
|
|
|
|
|
UpstreamPacketTypeDef* UpstreamHidPacket = NULL;
|
|
UpstreamHidSendReportCallback ReportCallback = NULL;
|
|
|
|
|
|
|
|
void Upstream_HID_GetNextReportReceiveCallback(UpstreamPacketTypeDef* receivedPacket);
|
|
|
|
|
|
|
|
void Upstream_HID_DeInit(void)
|
|
{
|
|
if (UpstreamHidPacket != NULL)
|
|
{
|
|
Upstream_ReleasePacket(UpstreamHidPacket);
|
|
UpstreamHidPacket = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
HAL_StatusTypeDef Upstream_HID_GetNextReport(UpstreamHidSendReportCallback callback)
|
|
{
|
|
UpstreamPacketTypeDef* freePacket;
|
|
InterfaceCommandClassTypeDef activeClass;
|
|
|
|
activeClass = Upstream_StateMachine_CheckActiveClass();
|
|
if ((activeClass != COMMAND_CLASS_HID_MOUSE)) //add classes here
|
|
{
|
|
UPSTREAM_STATEMACHINE_FREAKOUT;
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
//Release packet used for last transaction (if any)
|
|
if (UpstreamHidPacket != NULL)
|
|
{
|
|
Upstream_ReleasePacket(UpstreamHidPacket);
|
|
UpstreamHidPacket = NULL;
|
|
}
|
|
|
|
if (ReportCallback != NULL)
|
|
{
|
|
UPSTREAM_STATEMACHINE_FREAKOUT;
|
|
return HAL_ERROR;
|
|
}
|
|
ReportCallback = callback;
|
|
|
|
freePacket = Upstream_GetFreePacketImmediately();
|
|
if (freePacket == NULL)
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
freePacket->Length16 = UPSTREAM_PACKET_HEADER_LEN_16;
|
|
freePacket->CommandClass = activeClass;
|
|
freePacket->Command = COMMAND_HID_REPORT;
|
|
|
|
if (Upstream_TransmitPacket(freePacket) == HAL_OK)
|
|
{
|
|
return Upstream_ReceivePacket(Upstream_HID_GetNextReportReceiveCallback);
|
|
}
|
|
|
|
//else:
|
|
Upstream_ReleasePacket(freePacket);
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
|
|
|
|
void Upstream_HID_GetNextReportReceiveCallback(UpstreamPacketTypeDef* receivedPacket)
|
|
{
|
|
UpstreamHidSendReportCallback tempReportCallback;
|
|
InterfaceCommandClassTypeDef activeClass;
|
|
uint8_t dataLength = 0;
|
|
uint8_t i;
|
|
|
|
activeClass = Upstream_StateMachine_CheckActiveClass();
|
|
if ((activeClass != COMMAND_CLASS_HID_MOUSE)) //add classes here
|
|
{
|
|
UPSTREAM_STATEMACHINE_FREAKOUT;
|
|
return;
|
|
}
|
|
|
|
if ((UpstreamHidPacket != NULL) ||
|
|
(ReportCallback == NULL))
|
|
{
|
|
UPSTREAM_SPI_FREAKOUT;
|
|
return;
|
|
}
|
|
|
|
if (receivedPacket == NULL)
|
|
{
|
|
return; //Just give up...
|
|
}
|
|
|
|
|
|
if (activeClass == COMMAND_CLASS_HID_MOUSE)
|
|
{
|
|
if (receivedPacket->Length16 != (UPSTREAM_PACKET_HEADER_LEN_16 + ((HID_MOUSE_DATA_LEN + 1) / 2)))
|
|
{
|
|
UPSTREAM_SPI_FREAKOUT;
|
|
return;
|
|
}
|
|
|
|
//Mouse sanity checks & stuff go here...
|
|
|
|
dataLength = HID_MOUSE_DATA_LEN;
|
|
}
|
|
|
|
//Other HID classes go here...
|
|
|
|
|
|
if (dataLength == 0)
|
|
{
|
|
UPSTREAM_SPI_FREAKOUT;
|
|
return;
|
|
}
|
|
|
|
for (i = dataLength; i > HID_REPORT_DATA_LEN; i++)
|
|
{
|
|
receivedPacket->Data[i] = 0; //Zero out unused bytes before we send report upstream
|
|
}
|
|
|
|
UpstreamHidPacket = receivedPacket; //Save packet so we can free it when upstream USB transaction is done
|
|
tempReportCallback = ReportCallback;
|
|
ReportCallback = NULL;
|
|
tempReportCallback(receivedPacket->Data, HID_REPORT_DATA_LEN);
|
|
}
|
|
|
|
|