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/* mbed USBHost Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "dbg.h"
#include "USBEndpoint.h"
void USBEndpoint::init(HCED * hced_, ENDPOINT_TYPE type_, ENDPOINT_DIRECTION dir_, uint32_t size, uint8_t ep_number, HCTD* td_list_[2])
{
hced = hced_;
type = type_;
dir = dir_;
setup = (type == CONTROL_ENDPOINT) ? true : false;
//TDs have been allocated by the host
memcpy((HCTD**)td_list, td_list_, sizeof(HCTD*)*2); //TODO: Maybe should add a param for td_list size... at least a define
memset(td_list_[0], 0, sizeof(HCTD));
memset(td_list_[1], 0, sizeof(HCTD));
td_list[0]->ep = this;
td_list[1]->ep = this;
hced->control = 0;
//Empty queue
hced->tailTD = td_list[0];
hced->headTD = td_list[0];
hced->nextED = 0;
address = (ep_number & 0x7F) | ((dir - 1) << 7);
hced->control = ((ep_number & 0x7F) << 7) // Endpoint address
| (type != CONTROL_ENDPOINT ? ( dir << 11) : 0 ) // direction : Out = 1, 2 = In
| ((size & 0x3ff) << 16); // MaxPkt Size
transfer_len = 0;
transferred = 0;
buf_start = 0;
nextEp = NULL;
td_current = td_list[0];
td_next = td_list[1];
intf_nb = 0;
state = USB_TYPE_IDLE;
}
void USBEndpoint::setSize(uint32_t size)
{
hced->control &= ~(0x3ff << 16);
hced->control |= (size << 16);
}
void USBEndpoint::setDeviceAddress(uint8_t addr)
{
hced->control &= ~(0x7f);
hced->control |= (addr & 0x7F);
}
void USBEndpoint::setSpeed(uint8_t speed)
{
hced->control &= ~(1 << 13);
hced->control |= (speed << 13);
}
//Only for control Eps
void USBEndpoint::setNextToken(uint32_t token)
{
switch (token) {
case TD_SETUP:
dir = OUT;
setup = true;
break;
case TD_IN:
dir = IN;
setup = false;
break;
case TD_OUT:
dir = OUT;
setup = false;
break;
}
}
struct {
USB_TYPE type;
const char * str;
} static type_string[] = {
/*0*/ {USB_TYPE_OK, "USB_TYPE_OK"},
{USB_TYPE_CRC_ERROR, "USB_TYPE_CRC_ERROR"},
{USB_TYPE_BIT_STUFFING_ERROR, "USB_TYPE_BIT_STUFFING_ERROR"},
{USB_TYPE_DATA_TOGGLE_MISMATCH_ERROR, "USB_TYPE_DATA_TOGGLE_MISMATCH_ERROR"},
{USB_TYPE_STALL_ERROR, "USB_TYPE_STALL_ERROR"},
/*5*/ {USB_TYPE_DEVICE_NOT_RESPONDING_ERROR, "USB_TYPE_DEVICE_NOT_RESPONDING_ERROR"},
{USB_TYPE_PID_CHECK_FAILURE_ERROR, "USB_TYPE_PID_CHECK_FAILURE_ERROR"},
{USB_TYPE_UNEXPECTED_PID_ERROR, "USB_TYPE_UNEXPECTED_PID_ERROR"},
{USB_TYPE_DATA_OVERRUN_ERROR, "USB_TYPE_DATA_OVERRUN_ERROR"},
{USB_TYPE_DATA_UNDERRUN_ERROR, "USB_TYPE_DATA_UNDERRUN_ERROR"},
/*10*/ {USB_TYPE_ERROR, "USB_TYPE_ERROR"},
{USB_TYPE_ERROR, "USB_TYPE_ERROR"},
{USB_TYPE_BUFFER_OVERRUN_ERROR, "USB_TYPE_BUFFER_OVERRUN_ERROR"},
{USB_TYPE_BUFFER_UNDERRUN_ERROR, "USB_TYPE_BUFFER_UNDERRUN_ERROR"},
{USB_TYPE_DISCONNECTED, "USB_TYPE_DISCONNECTED"},
/*15*/ {USB_TYPE_FREE, "USB_TYPE_FREE"},
{USB_TYPE_IDLE, "USB_TYPE_IDLE"},
{USB_TYPE_PROCESSING, "USB_TYPE_PROCESSING"},
{USB_TYPE_ERROR, "USB_TYPE_ERROR"}
};
void USBEndpoint::setState(uint8_t st) {
if (st > 18)
return;
state = type_string[st].type;
}
const char * USBEndpoint::getStateString() {
return type_string[state].str;
}
void USBEndpoint::queueTransfer()
{
transfer_len = (uint32_t)td_current->bufEnd - (uint32_t)td_current->currBufPtr + 1;
transferred = transfer_len;
buf_start = (uint8_t *)td_current->currBufPtr;
//Now add this free TD at this end of the queue
state = USB_TYPE_PROCESSING;
td_current->nextTD = td_next;
hced->tailTD = td_next;
}
void USBEndpoint::unqueueTransfer(volatile HCTD * td)
{
td->control=0;
td->currBufPtr=0;
td->bufEnd=0;
td->nextTD=0;
hced->headTD = (HCTD *)((uint32_t)hced->tailTD | ((uint32_t)hced->headTD & 0x2)); //Carry bit
td_current = td_next;
td_next = td;
}
void USBEndpoint::queueEndpoint(USBEndpoint * ed)
{
nextEp = ed;
hced->nextED = (ed == NULL) ? 0 : ed->getHCED();
}
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