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168 lines
4.0 KiB
C++
168 lines
4.0 KiB
C++
/* Copyright (c) 2015, Arduino LLC
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**
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** Original code (pre-library): Copyright (c) 2011, Peter Barrett
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**
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** Permission to use, copy, modify, and/or distribute this software for
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** any purpose with or without fee is hereby granted, provided that the
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** above copyright notice and this permission notice appear in all copies.
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**
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** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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** WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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** WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
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** BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
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** OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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** WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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** ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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** SOFTWARE.
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*/
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#include "USB/PluggableUSB.h"
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#include "HID.h"
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HID_ HID;
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static uint8_t HID_ENDPOINT_INT;
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//================================================================================
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//================================================================================
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// HID report descriptor
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#define LSB(_x) ((_x) & 0xFF)
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#define MSB(_x) ((_x) >> 8)
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#define RAWHID_USAGE_PAGE 0xFFC0
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#define RAWHID_USAGE 0x0C00
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#define RAWHID_TX_SIZE 64
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#define RAWHID_RX_SIZE 64
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static uint8_t HID_INTERFACE;
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HIDDescriptor _hidInterface;
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static HIDDescriptorListNode* rootNode = NULL;
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static uint8_t sizeof_hidReportDescriptor = 0;
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static uint8_t modules_count = 0;
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//================================================================================
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//================================================================================
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// Driver
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uint8_t _hid_protocol = 1;
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uint8_t _hid_idle = 1;
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int HID_GetInterface(uint8_t* interfaceNum)
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{
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interfaceNum[0] += 1; // uses 1
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_hidInterface =
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{
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D_INTERFACE(HID_INTERFACE,1,3,0,0),
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D_HIDREPORT(sizeof_hidReportDescriptor),
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D_ENDPOINT(USB_ENDPOINT_IN (HID_ENDPOINT_INT),USB_ENDPOINT_TYPE_INTERRUPT,0x40,0x01)
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};
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return USBD_SendControl(0,&_hidInterface,sizeof(_hidInterface));
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}
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int HID_GetDescriptor(int8_t t)
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{
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if (HID_REPORT_DESCRIPTOR_TYPE == t) {
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HIDDescriptorListNode* current = rootNode;
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int total = 0;
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while(current != NULL) {
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total += USBD_SendControl(0,current->cb->descriptor,current->cb->length);
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current = current->next;
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}
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return total;
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} else {
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return 0;
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}
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}
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void HID_::AppendDescriptor(HIDDescriptorListNode *node)
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{
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if (modules_count == 0) {
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rootNode = node;
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} else {
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HIDDescriptorListNode *current = rootNode;
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while(current->next != NULL) {
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current = current->next;
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}
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current->next = node;
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}
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modules_count++;
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sizeof_hidReportDescriptor += node->cb->length;
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}
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void HID_::SendReport(uint8_t id, const void* data, int len)
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{
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uint8_t p[64];
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const uint8_t *d = reinterpret_cast<const uint8_t *>(data);
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p[0] = id;
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for (uint32_t i=0; i<len; i++)
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p[i+1] = d[i];
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USBD_Send(HID_TX, p, len+1);
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}
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bool HID_Setup(USBSetup& setup, uint8_t i)
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{
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if (HID_INTERFACE != i) {
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return false;
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} else {
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uint8_t r = setup.bRequest;
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uint8_t requestType = setup.bmRequestType;
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if (REQUEST_DEVICETOHOST_CLASS_INTERFACE == requestType)
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{
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if (HID_GET_REPORT == r)
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{
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//HID_GetReport();
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return true;
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}
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if (HID_GET_PROTOCOL == r)
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{
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//Send8(_hid_protocol); // TODO
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return true;
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}
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}
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if (REQUEST_HOSTTODEVICE_CLASS_INTERFACE == requestType)
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{
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if (HID_SET_PROTOCOL == r)
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{
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_hid_protocol = setup.wValueL;
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return true;
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}
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if (HID_SET_IDLE == r)
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{
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_hid_idle = setup.wValueL;
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return true;
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}
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}
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return false;
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}
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}
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HID_::HID_(void)
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{
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static uint8_t endpointType[1];
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endpointType[0] = EP_TYPE_INTERRUPT_IN;
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static PUSBCallbacks cb = {
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.setup = &HID_Setup,
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.getInterface = &HID_GetInterface,
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.getDescriptor = &HID_GetDescriptor,
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.numEndpoints = 1,
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.numInterfaces = 1,
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.endpointType = endpointType,
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};
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static PUSBListNode node(&cb);
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HID_ENDPOINT_INT = PUSB_AddFunction(&node, &HID_INTERFACE);
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}
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int HID_::begin(void)
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{
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return 0;
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} |