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trezor-firmware/firmware/usb.h
Jochen Hoenicke 9287dd7e04
Poll USB during BIP39 derivation.
This patch adds calls to usbPoll in the progress callback.  This
should address #98.

We call usbDelay instead of Poll, to call usbd_poll several times.
Otherwise it would only handle one event instead of handling all
events that were pending so far.  The ugly magic number 5 is a guess.

Note that we also need to set usbTiny, so that we don't recursively
process messages.  Since we don't know whether usbTiny is set, we
need to store the old value (especially true for u2f).

This fix also relies on another fix in libopencm3.
2016-11-09 16:17:50 +01:00

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945 B
C

/*
* This file is part of the TREZOR project.
*
* Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __USB_H__
#define __USB_H__
void usbInit(void);
void usbPoll(void);
void usbReconnect(void);
char usbTiny(char set);
void usbDelay(int cycles);
#endif