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/*
skyeye_uart_stdio.c - skyeye uart device from standard input/output
Copyright (C) 2003 - 2007 Skyeye Develop Group
for help please send mail to <skyeye-developer@lists.gro.clinux.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* 2007.01.18 by Anthony Lee : initial version
*/
#include "skyeye_uart.h"
#ifndef __MINGW32__
#ifdef __BEOS__
#include <BeBuild.h>
#if (B_BEOS_VERSION >= 0x510)
#include <sys/select.h>
#else /* B_BEOS_VERSION < 0x510 */
#define SELECT_UNSUPPORTED
#endif /* B_BEOS_VERSION >= 0x510 */
#else /* !__BEOS__ */
#include <sys/select.h>
#endif /* __BEOS__ */
#ifdef SELECT_UNSUPPORTED
#include <stdint.h>
#include "portable/usleep.h"
#endif /* SELECT_UNSUPPORTED */
#include <unistd.h>
#include <termios.h>
int uart_stdio_open(struct uart_device *uart_dev)
{
struct termios tmp;
if((uart_dev->priv = malloc(sizeof(struct termios))) == NULL) return -1;
tcgetattr(0, &tmp);
memcpy(uart_dev->priv, &tmp, sizeof(struct termios));
/* Set the terminal for non-blocking per-character (not per-line) input, no echo */
tmp.c_lflag &= ~ICANON;
tmp.c_lflag |= ISIG;
tmp.c_lflag &= ~ECHO;
tmp.c_cc[VMIN] = 0;
tmp.c_cc[VTIME] = 0;
tcsetattr(0, TCSANOW, &tmp);
return 0;
}
int uart_stdio_close(struct uart_device *uart_dev)
{
if(uart_dev->priv != NULL)
{
/* Restore the original terminal settings */
tcsetattr(0, TCSANOW, (struct termios*)uart_dev->priv);
free(uart_dev->priv);
uart_dev->priv = NULL;
}
return 0;
}
int uart_stdio_read(struct uart_device *uart_dev, void *buf, size_t count, struct timeval *timeout)
{
/*
* 2007-03-03 by Anthony Lee : for the system that don't support select().
* WHY: maybe useful for real-time improvement.
*/
#ifndef SELECT_UNSUPPORTED
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(0, &rfds);
if(select(1, &rfds, NULL, NULL, timeout) != 1 || !FD_ISSET(0, &rfds)) return 0;
return read(0, buf, count);
#else /* SELECT_UNSUPPORTED */
int retVal;
int64_t time_left;
if(timeout != NULL) time_left = (int64_t)timeout->tv_sec * (int64_t)1000000 + (int64_t)timeout->tv_usec;
while(1)
{
/* for non-blocking input, instead of polling. */
if((retVal = read(0, buf, count)) != 0) break;
if(timeout == NULL) continue;
if(time_left <= 0) break;
usleep(1000);
time_left -= (int64_t)1000;
}
return retVal;
#endif /* !SELECT_UNSUPPORTED */
}
int uart_stdio_write(struct uart_device *uart_dev, void *buf, size_t count)
{
return write(1, buf, count);
}
#else /* __MINGW32__ */
#undef WORD
#undef byte
#include <windows.h>
int uart_stdio_open(struct uart_device *uart_dev)
{
char *term = getenv("TERM");
DWORD console_mode = 0;
if(term ? (strcmp(term, "xterm") == 0 || strcmp(term, "msys") == 0) : 0) /* rxvt shell */
{
/* TODO */
fprintf(stderr, "\x1b[31m***\n"
"*** [UART_STDIO_WIN32]: unsupported for rxvt shell !!!\n"
"***\tyou should add \"GOTO: startsh\" to the target of\n"
"***\tthe link pointed to \"msys.bat\".\n"
"***\n\x1b[0m");
skyeye_exit(-1);
}
if(GetStdHandle(STD_INPUT_HANDLE) == NULL || GetStdHandle(STD_INPUT_HANDLE) == INVALID_HANDLE_VALUE)
{
AllocConsole();
Sleep(500);
}
GetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), &console_mode);
/* Set the terminal for non-blocking per-character (not per-line) input, no echo */
SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), console_mode & ~(ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT));
uart_dev->priv = (void*)console_mode;
return 0;
}
int uart_stdio_close(struct uart_device *uart_dev)
{
/* Restore the original terminal settings */
SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), (DWORD)uart_dev->priv);
return 0;
}
int uart_stdio_read(struct uart_device *uart_dev, void *buf, size_t count, struct timeval *timeout)
{
int flags = -1;
DWORD status;
HANDLE handle = NULL;
DWORD nRead = 0;
INPUT_RECORD input;
DWORD nEvents = 0;
/* 2007-01-24 modified by Anthony Lee : for working on Windows 9x */
DWORD msec = (timeout == NULL ? INFINITE : (DWORD)(timeout->tv_sec * 1000UL + timeout->tv_usec / 1000UL));
handle = GetStdHandle(STD_INPUT_HANDLE);
if(handle == NULL || handle == INVALID_HANDLE_VALUE)
{
fprintf(stderr, "%s: Unable to get handle.\n", __FUNCTION__);
return -1;
}
status = WaitForSingleObject(handle, msec);
if(status == WAIT_TIMEOUT) flags = 0; /* timeout */
else if(status == WAIT_OBJECT_0) flags = 1; /* got something */
if(flags <= 0) return flags;
/* non-blocking stardand input */
/* FIXME: IT IS NOT GOOD */
while(!(GetNumberOfConsoleInputEvents(handle, &nEvents) == 0 || nEvents == 0) && nRead < count)
{
DWORD code;
if(ReadConsoleInput(handle, &input, 1, &nEvents) == 0 || nEvents != 1) break;
if(input.EventType != KEY_EVENT) continue;
if(input.Event.KeyEvent.bKeyDown == FALSE) continue;
code = input.Event.KeyEvent.wVirtualKeyCode;
if(code == VK_SHIFT || code == VK_MENU || code == VK_CONTROL || code == VK_LWIN || code == VK_RWIN ||
code == VK_APPS || code == VK_CAPITAL || code == VK_SCROLL || code == VK_NUMLOCK) continue;
*(((char*)buf) + (nRead++)) = input.Event.KeyEvent.uChar.AsciiChar;
}
return (int)nRead;
}
int uart_stdio_write(struct uart_device *uart_dev, void *buf, size_t count)
{
HANDLE handle = NULL;
DWORD nWritten = 0;
handle = GetStdHandle(STD_OUTPUT_HANDLE);
if(handle == NULL || handle == INVALID_HANDLE_VALUE)
{
fprintf(stderr, "%s: Unable to get handle.\n", __FUNCTION__);
return -1;
}
if(!WriteFile(handle, buf, count, &nWritten, NULL)) return -1;
return (int)nWritten;
}
#endif /* !__MINGW32__ */
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