mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-25 08:58:14 +00:00
82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (C) 2017 Saleem Rashid <trezor@saleemrashid.com>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdint.h>
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#include <unistd.h>
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#include "usb.h"
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#include "debug.h"
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#include "messages.h"
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#include "timer.h"
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static volatile char tiny = 0;
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void usbInit(void) { emulatorSocketInit(); }
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#if DEBUG_LINK
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#define _ISDBG (((iface == 1) ? 'd' : 'n'))
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#else
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#define _ISDBG ('n')
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#endif
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void waitAndProcessUSBRequests(uint32_t millis) {
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emulatorPoll();
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static uint8_t buffer[USB_PACKET_SIZE];
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int iface = 0;
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if (emulatorSocketRead(&iface, buffer, sizeof(buffer), millis) > 0) {
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if (!tiny) {
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do {
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msg_read_common(_ISDBG, buffer, sizeof(buffer));
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} while (emulatorSocketRead(&iface, buffer, sizeof(buffer), 0) > 0);
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} else {
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msg_read_tiny(buffer, sizeof(buffer));
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}
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}
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const uint8_t *data;
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while ((data = msg_out_data()) != NULL) {
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emulatorSocketWrite(0, data, USB_PACKET_SIZE);
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}
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#if DEBUG_LINK
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while ((data = msg_debug_out_data()) != NULL) {
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emulatorSocketWrite(1, data, USB_PACKET_SIZE);
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}
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#endif
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}
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void usbPoll(void) { waitAndProcessUSBRequests(0); }
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char usbTiny(char set) {
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char old = tiny;
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tiny = set;
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return old;
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}
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void usbFlush(uint32_t millis) {
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const uint8_t *data;
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while ((data = msg_out_data()) != NULL) {
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emulatorSocketWrite(0, data, USB_PACKET_SIZE);
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}
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usleep(millis * 1000);
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}
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