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/*
PluggableUSB.cpp
Copyright (c) 2015 Arduino LLC
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "USBAPI.h"
#include "PluggableUSB.h"
#if defined(USBCON)
#ifdef PLUGGABLE_USB_ENABLED
extern uint8_t _initEndpoints[];
int PluggableUSB_::getInterface(uint8_t* interfaceNum)
{
int sent = 0;
PUSBListNode* node;
for (node = rootNode; node; node = node->next) {
int res = node->getInterface(interfaceNum);
if (res < 0)
return -1;
sent += res;
}
return sent;
}
int PluggableUSB_::getDescriptor(int8_t type)
{
PUSBListNode* node;
for (node = rootNode; node; node = node->next) {
int ret = node->getDescriptor(type);
// ret!=0 -> request has been processed
if (ret)
return ret;
}
return 0;
}
bool PluggableUSB_::setup(USBSetup& setup, uint8_t j)
{
PUSBListNode* node;
for (node = rootNode; node; node = node->next) {
if (node->setup(setup, j)) {
return true;
}
}
return false;
}
bool PluggableUSB_::plug(PUSBListNode *node)
{
if ((lastEp + node->numEndpoints) > USB_ENDPOINTS) {
return false;
}
if (!rootNode) {
rootNode = node;
} else {
PUSBListNode *current = rootNode;
while (current->next) {
current = current->next;
}
current->next = node;
}
node->pluggedInterface = lastIf;
node->pluggedEndpoint = lastEp;
lastIf += node->numInterfaces;
for (uint8_t i = 0; i < node->numEndpoints; i++) {
_initEndpoints[lastEp] = node->endpointType[i];
lastEp++;
}
return true;
// restart USB layer???
}
PluggableUSB_& PluggableUSB()
{
static PluggableUSB_ obj;
return obj;
}
PluggableUSB_::PluggableUSB_() : lastIf(CDC_ACM_INTERFACE + CDC_INTERFACE_COUNT),
lastEp(CDC_FIRST_ENDPOINT + CDC_ENPOINT_COUNT),
rootNode(NULL)
{
// Empty
}
#endif
#endif /* if defined(USBCON) */
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