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Arduino/hardware/arduino/sam/libraries/HID/HID.cpp
2015-07-17 12:13:21 +02:00

168 lines
4.0 KiB
C++

/* 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 "USB/PluggableUSB.h"
#include "HID.h"
HID_ HID;
static uint8_t HID_ENDPOINT_INT;
//================================================================================
//================================================================================
// HID report descriptor
#define LSB(_x) ((_x) & 0xFF)
#define MSB(_x) ((_x) >> 8)
#define RAWHID_USAGE_PAGE 0xFFC0
#define RAWHID_USAGE 0x0C00
#define RAWHID_TX_SIZE 64
#define RAWHID_RX_SIZE 64
static uint8_t HID_INTERFACE;
HIDDescriptor _hidInterface;
static HIDDescriptorListNode* rootNode = NULL;
static uint8_t sizeof_hidReportDescriptor = 0;
static uint8_t modules_count = 0;
//================================================================================
//================================================================================
// Driver
uint8_t _hid_protocol = 1;
uint8_t _hid_idle = 1;
int HID_GetInterface(uint8_t* interfaceNum)
{
interfaceNum[0] += 1; // uses 1
_hidInterface =
{
D_INTERFACE(HID_INTERFACE,1,3,0,0),
D_HIDREPORT(sizeof_hidReportDescriptor),
D_ENDPOINT(USB_ENDPOINT_IN (HID_ENDPOINT_INT),USB_ENDPOINT_TYPE_INTERRUPT,0x40,0x01)
};
return USBD_SendControl(0,&_hidInterface,sizeof(_hidInterface));
}
int HID_GetDescriptor(int8_t t)
{
if (HID_REPORT_DESCRIPTOR_TYPE == t) {
HIDDescriptorListNode* current = rootNode;
int total = 0;
while(current != NULL) {
total += USBD_SendControl(0,current->cb->descriptor,current->cb->length);
current = current->next;
}
return total;
} else {
return 0;
}
}
void HID_::AppendDescriptor(HIDDescriptorListNode *node)
{
if (modules_count == 0) {
rootNode = node;
} else {
HIDDescriptorListNode *current = rootNode;
while(current->next != NULL) {
current = current->next;
}
current->next = node;
}
modules_count++;
sizeof_hidReportDescriptor += node->cb->length;
}
void HID_::SendReport(uint8_t id, const void* data, int len)
{
uint8_t p[64];
const uint8_t *d = reinterpret_cast<const uint8_t *>(data);
p[0] = id;
for (uint32_t i=0; i<len; i++)
p[i+1] = d[i];
USBD_Send(HID_TX, p, len+1);
}
bool HID_Setup(USBSetup& setup, uint8_t i)
{
if (HID_INTERFACE != i) {
return false;
} else {
uint8_t r = setup.bRequest;
uint8_t requestType = setup.bmRequestType;
if (REQUEST_DEVICETOHOST_CLASS_INTERFACE == requestType)
{
if (HID_GET_REPORT == r)
{
//HID_GetReport();
return true;
}
if (HID_GET_PROTOCOL == r)
{
//Send8(_hid_protocol); // TODO
return true;
}
}
if (REQUEST_HOSTTODEVICE_CLASS_INTERFACE == requestType)
{
if (HID_SET_PROTOCOL == r)
{
_hid_protocol = setup.wValueL;
return true;
}
if (HID_SET_IDLE == r)
{
_hid_idle = setup.wValueL;
return true;
}
}
return false;
}
}
HID_::HID_(void)
{
static uint8_t endpointType[1];
endpointType[0] = EP_TYPE_INTERRUPT_IN;
static PUSBCallbacks cb = {
.setup = &HID_Setup,
.getInterface = &HID_GetInterface,
.getDescriptor = &HID_GetDescriptor,
.numEndpoints = 1,
.numInterfaces = 1,
.endpointType = endpointType,
};
static PUSBListNode node(&cb);
HID_ENDPOINT_INT = PUSB_AddFunction(&node, &HID_INTERFACE);
}
int HID_::begin(void)
{
return 0;
}