128 lines
2.6 KiB
C
128 lines
2.6 KiB
C
/*
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* This file is part of the Black Magic Debug project.
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*
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* MIT License
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*
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* Copyright (c) 2021 Koen De Vleeschauwer
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* 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 OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <general.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <rtt_if.h>
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/* maybe rewrite this as tcp server */
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#ifndef WIN32
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#include <termios.h>
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/* linux */
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static struct termios saved_ttystate;
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static bool tty_saved = false;
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/* set up and tear down */
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int rtt_if_init()
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{
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struct termios ttystate;
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tcgetattr(STDIN_FILENO, &saved_ttystate);
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tty_saved = true;
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tcgetattr(STDIN_FILENO, &ttystate);
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ttystate.c_lflag &= ~ICANON;
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ttystate.c_lflag &= ~ECHO;
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ttystate.c_cc[VMIN] = 1;
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tcsetattr(STDIN_FILENO, TCSANOW, &ttystate);
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int flags = fcntl(0, F_GETFL, 0);
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fcntl(0, F_SETFL, flags | O_NONBLOCK);
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return 0;
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}
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int rtt_if_exit()
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{
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if (tty_saved)
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tcsetattr(STDIN_FILENO, TCSANOW, &saved_ttystate);
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return 0;
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}
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/* write buffer to terminal */
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uint32_t rtt_write(const char *buf, uint32_t len)
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{
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write(1, buf, len);
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return len;
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}
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/* read character from terminal */
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int32_t rtt_getchar()
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{
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char ch;
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int len;
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len = read(0, &ch, 1);
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if (len == 1) return ch;
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return -1;
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}
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/* true if no characters available */
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bool rtt_nodata()
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{
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return false;
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}
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#else
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/* windows, output only */
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int rtt_if_init()
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{
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return 0;
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}
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int rtt_if_exit()
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{
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return 0;
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}
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/* write buffer to terminal */
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uint32_t rtt_write(const char *buf, uint32_t len)
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{
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write(1, buf, len);
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return len;
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}
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/* read character from terminal */
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int32_t rtt_getchar()
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{
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return -1;
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}
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/* true if no characters available */
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bool rtt_nodata()
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{
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return false;
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}
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#endif
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