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/*
Copyright (c) 2015, Arduino LLC
Original code (pre-library): Copyright (c) 2011, Peter Barrett
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
*/
#include "PluggableUSB.h"
#include "HID.h"
#if defined(USBCON)
HID_& HID()
{
static HID_ obj;
return obj;
}
int HID_::getInterface(uint8_t* interfaceCount)
{
*interfaceCount += 1; // uses 1
HIDDescriptor hidInterface = {
D_INTERFACE(pluggedInterface, 1, 3, 0, 0),
D_HIDREPORT(descriptorSize),
D_ENDPOINT(USB_ENDPOINT_IN(pluggedEndpoint), USB_ENDPOINT_TYPE_INTERRUPT, USB_EP_SIZE, 0x01)
};
return USB_SendControl(0, &hidInterface, sizeof(hidInterface));
}
int HID_::getDescriptor(USBSetup& setup)
{
// Check if this is a HID Class Descriptor request
if (setup.bmRequestType != REQUEST_DEVICETOHOST_STANDARD_INTERFACE) { return 0; }
if (setup.wValueH != HID_REPORT_DESCRIPTOR_TYPE) { return 0; }
// In a HID Class Descriptor wIndex cointains the interface number
if (setup.wIndex != pluggedInterface) { return 0; }
int total = 0;
HIDDescriptorListNode* node;
for (node = rootNode; node; node = node->next) {
int res = USB_SendControl(TRANSFER_PGM, node->data, node->length);
if (res == -1)
return -1;
total += res;
}
return total;
}
void HID_::AppendDescriptor(HIDDescriptorListNode *node)
{
if (!rootNode) {
rootNode = node;
} else {
HIDDescriptorListNode *current = rootNode;
while (current->next) {
current = current->next;
}
current->next = node;
}
descriptorSize += node->length;
}
void HID_::SendReport(uint8_t id, const void* data, int len)
{
USB_Send(pluggedEndpoint, &id, 1);
USB_Send(pluggedEndpoint | TRANSFER_RELEASE, data, len);
}
bool HID_::setup(USBSetup& setup)
{
if (pluggedInterface != setup.wIndex) {
return false;
}
uint8_t request = setup.bRequest;
uint8_t requestType = setup.bmRequestType;
if (requestType == REQUEST_DEVICETOHOST_CLASS_INTERFACE)
{
if (request == HID_GET_REPORT) {
// TODO: HID_GetReport();
return true;
}
if (request == HID_GET_PROTOCOL) {
// TODO: Send8(protocol);
return true;
}
}
if (requestType == REQUEST_HOSTTODEVICE_CLASS_INTERFACE)
{
if (request == HID_SET_PROTOCOL) {
protocol = setup.wValueL;
return true;
}
if (request == HID_SET_IDLE) {
idle = setup.wValueL;
return true;
}
if (request == HID_SET_REPORT)
{
}
}
return false;
}
HID_::HID_(void) : PUSBListNode(1, 1, epType),
rootNode(NULL), descriptorSize(0),
protocol(1), idle(1)
{
epType[0] = EP_TYPE_INTERRUPT_IN;
PluggableUSB().plug(this);
}
int HID_::begin(void)
{
return 0;
}
#endif /* if defined(USBCON) */
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