mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-27 08:38:07 +00:00
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*
|
|
* This file is part of the Trezor project, https://trezor.io/
|
|
*
|
|
* 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__
|
|
|
|
#define USB_PACKET_SIZE 64
|
|
|
|
void usbInit(void);
|
|
void usbPoll(void);
|
|
void usbReconnect(void);
|
|
|
|
/*
|
|
* Setting this value to 1 will limit the protobuf messages `usbPoll` and
|
|
* `waitAndProcessUSBRequests` can handle to a few defined in `msg_read_tiny`.
|
|
*
|
|
* Also affects U2F and DebugLink messages.
|
|
*
|
|
* Setting to 1 is meant to prevent infinite recursion when you need to read a
|
|
* message while being called from FSM.
|
|
*
|
|
* Setting to 0 allows processing all messages.
|
|
*/
|
|
char usbTiny(char set);
|
|
|
|
/*
|
|
* This will wait given number of milliseconds for arrival of protobuf message.
|
|
* If it arrives, it will service it before returning.
|
|
*
|
|
* If you call this function from any function that is called from FSM,
|
|
* you must use `usbTiny(1)` before and `usbTiny(oldTinyValue)` or `usbTiny(0)`
|
|
* after, otherwise there is possibility of stack exhaustion.
|
|
*/
|
|
void waitAndProcessUSBRequests(uint32_t millis);
|
|
|
|
/*
|
|
* Flush out any messages still in USB bus FIFO while waiting given number
|
|
* of milliseconds. Any incoming USB protobuf messages are not serviced.
|
|
*/
|
|
void usbFlush(uint32_t millis);
|
|
|
|
#endif
|