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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
#define MAX_MODULES 6
static uint8_t lastIf = CDC_ACM_INTERFACE + CDC_INTERFACE_COUNT;
static uint8_t lastEp = CDC_FIRST_ENDPOINT + CDC_ENPOINT_COUNT;
extern uint8_t _initEndpoints[];
//PUSBCallbacks cbs[MAX_MODULES];
static uint8_t modules_count = 0;
static PUSBListNode* rootNode = NULL;
int PluggableUSB_::getInterface(uint8_t* interfaceNum)
{
int ret = 0;
PUSBListNode* node = rootNode;
for (uint8_t i=0; i<modules_count; i++) {
ret = node->getInterface(interfaceNum);
node = node->next;
}
return ret;
}
int PluggableUSB_::getDescriptor(int8_t t)
{
int ret = 0;
PUSBListNode* node = rootNode;
for (uint8_t i=0; i<modules_count && ret == 0; i++) {
ret = node->getDescriptor(t);
node = node->next;
}
return ret;
}
bool PluggableUSB_::setup(USBSetup& setup, uint8_t j)
{
bool ret = false;
PUSBListNode* node = rootNode;
for (uint8_t i=0; i<modules_count && ret == false; i++) {
ret = node->setup(setup, j);
node = node->next;
}
return ret;
}
bool PluggableUSB_::plug(PUSBListNode *node)
{
if (modules_count >= MAX_MODULES) {
return false;
}
if (modules_count == 0) {
rootNode = node;
} else {
PUSBListNode *current = rootNode;
while(current->next != NULL) {
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++;
}
modules_count++;
return true;
// restart USB layer???
}
#endif
#endif /* if defined(USBCON) */
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