mirror of
https://github.com/gdsports/USBHost_t36
synced 2024-11-11 19:55:04 -05:00
276 lines
8.1 KiB
C++
276 lines
8.1 KiB
C++
/* USB EHCI Host for Teensy 3.6
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* Copyright 2017 Paul Stoffregen (paul@pjrc.com)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <Arduino.h>
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#include "USBHost.h"
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USBHub::USBHub() : /* mytimer(this), */ othertimer(this)
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{
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// TODO: free Device_t, Pipe_t & Transfer_t we will need
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driver_ready_for_device(this);
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}
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bool USBHub::claim(Device_t *dev, int type, const uint8_t *descriptors, uint32_t len)
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{
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// only claim entire device, never at interface level
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if (type != 0) return false;
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println("USBHub memory usage = ", sizeof(USBHub));
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println("USBHub claim_device this=", (uint32_t)this, HEX);
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// timer testing TODO: remove this later
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mytimer.init(this);
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mytimer.pointer = (void *)"This is mytimer";
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//mytimer.start(99129);
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othertimer.pointer = (void *)"Hello, I'm othertimer";
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//othertimer.start(12345);
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for (int i=0; i < 7; i++) {
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mytimers[i].init(this);
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//mytimers[i].start((i + 1) * 10000);
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}
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// check for HUB type
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if (dev->bDeviceClass != 9 || dev->bDeviceSubClass != 0) return false;
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// protocol must be 0=FS, 1=HS Single-TT, or 2=HS Multi-TT
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if (dev->bDeviceProtocol > 2) return false;
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// check for endpoint descriptor
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if (descriptors[9] != 7 || descriptors[10] != 5) return false;
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// endpoint must be IN direction
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if ((descriptors[11] & 0xF0) != 0x80) return false;
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// endpoint type must be interrupt
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if (descriptors[12] != 3) return false;
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// get the endpoint number, must not be zero
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endpoint = descriptors[11] & 0x0F;
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if (endpoint == 0) return false;
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// get the maximum packet size
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uint32_t maxsize = descriptors[13] | (descriptors[14] << 8);
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if (maxsize == 0) return false;
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if (maxsize > 1) return false; // do hub chips with > 7 ports exist?
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interval = descriptors[15];
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println(" polling interval = ", interval);
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println(descriptors[9]);
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println(descriptors[10]);
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println(descriptors[11], HEX);
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println(maxsize);
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// bDeviceProtocol = 0 is full speed
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// bDeviceProtocol = 1 is high speed single TT
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// bDeviceProtocol = 2 is high speed multiple TT
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println("bDeviceClass = ", dev->bDeviceClass);
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println("bDeviceSubClass = ", dev->bDeviceSubClass);
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println("bDeviceProtocol = ", dev->bDeviceProtocol);
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numports = 0; // unknown until hub descriptor is read
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changepipe = NULL;
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changebits = 0;
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memset(portstatus, 0, sizeof(portstatus));
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memset(portstate, 0, sizeof(portstate));
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mk_setup(setup[0], 0xA0, 6, 0x2900, 0, sizeof(hub_desc));
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queue_Control_Transfer(dev, &setup[0], hub_desc, this);
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return true;
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}
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void USBHub::timer_event(USBDriverTimer *timer)
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{
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uint32_t us = micros() - timer->started_micros;
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print("timer event (");
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print(us);
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print(" us): ");
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print((char *)timer->pointer);
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print(", this = ");
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print((uint32_t)this, HEX);
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println(", timer = ", (uint32_t)timer, HEX);
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}
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void USBHub::send_poweron(uint32_t port)
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{
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if (port == 0 || port > numports) return;
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mk_setup(setup[port], 0x23, 3, 8, port, 0);
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queue_Control_Transfer(device, &setup[port], NULL, this);
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}
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void USBHub::send_getstatus(uint32_t port)
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{
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if (port > numports) return;
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println("getstatus, port = ", port);
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mk_setup(setup[port], ((port > 0) ? 0xA3 : 0xA0), 0, 0, port, 4);
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queue_Control_Transfer(device, &setup[port], &statusbits[port], this);
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}
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void USBHub::send_clearstatus(uint32_t port)
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{
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if (port > numports) return;
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mk_setup(setup[port], ((port > 0) ? 0x23 : 0x20), 1, 0x10, port, 0);
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queue_Control_Transfer(device, &setup[port], NULL, this);
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}
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void USBHub::send_reset(uint32_t port)
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{
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if (port == 0 || port > numports) return;
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mk_setup(setup[port], 0x23, 3, 4, port, 0); // set feature PORT_RESET
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queue_Control_Transfer(device, &setup[port], NULL, this);
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}
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void USBHub::control(const Transfer_t *transfer)
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{
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println("USBHub control callback");
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print_hexbytes(transfer->buffer, transfer->length);
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uint32_t port = transfer->setup.wIndex;
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uint32_t mesg = transfer->setup.word1;
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switch (mesg) {
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case 0x290006A0: // read hub descriptor
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numports = hub_desc[2];
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characteristics = hub_desc[3];
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powertime = hub_desc[5];
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// TODO: do we need to use the DeviceRemovable
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// bits to make synthetic device connect events?
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println("Hub ports = ", numports);
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for (uint32_t i=1; i <= numports; i++) {
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send_poweron(i);
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}
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break;
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case 0x00080323: // power turned on
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if (port == numports && changepipe == NULL) {
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println("power turned on to all ports");
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println("device addr = ", device->address);
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changepipe = new_Pipe(device, 3, endpoint, 1, 1, interval);
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println("pipe cap1 = ", changepipe->qh.capabilities[0], HEX);
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changepipe->callback_function = callback;
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queue_Data_Transfer(changepipe, &changebits, 1, this);
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}
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break;
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case 0x000000A0: // get hub status
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println("New Hub Status");
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send_clearstatus(0);
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break;
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case 0x000000A3: // get port status
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println("New Port Status");
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if (transfer->length == 4) {
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uint32_t status = *(uint32_t *)(transfer->buffer);
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if (status != statusbits[port]) println("ERROR: status not same");
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new_port_status(port, status);
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}
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send_clearstatus(port);
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break;
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case 0x00100120: // clear hub status
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println("Hub Status Cleared");
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break;
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case 0x00100123: // clear port status
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println("Port Status Cleared, port=", port);
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break;
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default:
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println("unhandled setup, message = ", mesg, HEX);
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}
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}
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void USBHub::callback(const Transfer_t *transfer)
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{
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//println("HUB Callback (static)");
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if (transfer->driver) ((USBHub *)(transfer->driver))->status_change(transfer);
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}
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void USBHub::status_change(const Transfer_t *transfer)
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{
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println("HUB Callback (member)");
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println("status = ", changebits, HEX);
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for (uint32_t i=0; i <= numports; i++) {
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if (changebits & (1 << i)) {
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send_getstatus(i);
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}
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}
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queue_Data_Transfer(changepipe, &changebits, 1, this);
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}
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void USBHub::new_port_status(uint32_t port, uint32_t status)
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{
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if (port == 0 || port > numports) return;
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uint32_t priorstatus = portstatus[port - 1];
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portstatus[port] = status;
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print(" Status: port=");
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print(port);
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print(", status=");
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println(status, HEX);
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// status bits, USB 2.0: 11.24.2.7.1 page 427
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if (status & 0x0001) println(" Device is present: ");
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if (status & 0x0002) {
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println(" Enabled, speed = ");
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if (status & 0x0200) {
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print("1.5");
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} else {
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if (status & 0x0400) {
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print("480");
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} else {
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print("12");
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}
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}
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println(" Mbit/sec");
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}
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if (status & 0x0004) println(" Suspended");
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if (status & 0x0008) println(" Over-current");
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if (status & 0x0010) println(" Reset");
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if (status & 0x0100) println(" Has Power");
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if (status & 0x0800) println(" Test Mode");
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if (status & 0x1000) println(" Software Controls LEDs");
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if ((status & 0x0001) && !(priorstatus & 0x0001)) {
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println(" connect");
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// 100 ms debounce (USB 2.0: TATTDB, page 150 & 188)
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//delay(100); // TODO: horribly bad... need timing events
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//reset(port);
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// TODO... reset timer?
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} else if (!(status & 0x0001) && (priorstatus & 0x0001)) {
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println(" disconnect");
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}
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}
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void USBHub::disconnect()
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{
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// TODO: free resources
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}
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/*
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config descriptor from a Multi-TT hub
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09 02 29 00 01 01 00 E0 32
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09 04 00 00 01 09 00 01 00
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07 05 81 03 01 00 0C
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09 04 00 01 01 09 00 02 00
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07 05 81 03 01 00 0C
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*/
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