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-rw-r--r--hdlcutil/smdiag.c431
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diff --git a/hdlcutil/smdiag.c b/hdlcutil/smdiag.c
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+++ b/hdlcutil/smdiag.c
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+/*****************************************************************************/
+
+/*
+ * smdiag.c -- kernel soundcard radio modem driver diagnostics utility.
+ *
+ * Copyright (C) 1996,1997,2000 Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Please note that the GPL allows you to use the driver, NOT the radio.
+ * In order to use the radio, you need a license from the communications
+ * authority of your country.
+ *
+ *
+ * History:
+ * 0.1 26.06.1996 Started
+ * 0.2 11.05.1997 introduced hdrvcomm.h
+ * 0.3 05.01.2000 glibc compile fixes
+ */
+
+/*****************************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <limits.h>
+#include <net/if.h>
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include "hdrvcomm.h"
+
+/* ---------------------------------------------------------------------- */
+
+static char *progname;
+static Display *display = NULL;
+static Window window;
+static Pixmap pixmap;
+static unsigned long col_zeroline;
+static unsigned long col_background;
+static unsigned long col_trace;
+static GC gr_context;
+static int xmul;
+
+/* ---------------------------------------------------------------------- */
+
+static int x_error_handler(Display *disp, XErrorEvent *evt)
+{
+ char err_buf[256], mesg[256], number[256];
+ char *mtype = "XlibMessage";
+
+ XGetErrorText(disp, evt->error_code, err_buf, sizeof(err_buf));
+ fprintf(stderr, "X Error: %s\n", err_buf);
+ XGetErrorDatabaseText(disp, mtype, "MajorCode", "Request Major code %d",
+ mesg, sizeof(mesg));
+ fprintf(stderr, mesg, evt->request_code);
+ sprintf(number, "%d", evt->request_code);
+ XGetErrorDatabaseText(disp, "XRequest", number, "", err_buf,
+ sizeof(err_buf));
+ fprintf(stderr, " (%s)\n", err_buf);
+ abort();
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define WIDTH 512
+#define HEIGHT (constell ? 512 : 256)
+
+static int openwindow(char *disp, int constell, int samplesperbit)
+{
+ XSetWindowAttributes attr;
+ XGCValues gr_values;
+ XColor color, dummy;
+ XSizeHints sizehints;
+
+ if (!(display = XOpenDisplay(NULL)))
+ return -1;
+ XSetErrorHandler(x_error_handler);
+ XAllocNamedColor(display, DefaultColormap(display, 0), "red",
+ &color, &dummy);
+ col_zeroline = color.pixel;
+ col_background = WhitePixel(display, 0);
+ col_trace = BlackPixel(display, 0);
+ attr.background_pixel = col_background;
+ if (!(window = XCreateWindow(display, XRootWindow(display, 0),
+ 200, 200, WIDTH, HEIGHT, 5,
+ DefaultDepth(display, 0),
+ InputOutput, DefaultVisual(display, 0),
+ CWBackPixel, &attr))) {
+ fprintf(stderr, "smdiag: unable to open X window\n");
+ exit(1);
+ }
+ if (!(pixmap = XCreatePixmap(display, window, WIDTH, HEIGHT,
+ DefaultDepth(display, 0)))) {
+ fprintf(stderr, "smdiag: unable to open offscreen pixmap\n");
+ exit(1);
+ }
+ xmul = WIDTH / (2*(samplesperbit > 0 ? samplesperbit : 1));
+ XSelectInput(display, window, KeyPressMask | StructureNotifyMask
+ | ExposureMask) ;
+ XAllocNamedColor(display, DefaultColormap(display, 0), "red",
+ &color, &dummy);
+ gr_values.foreground = col_trace;
+ gr_values.line_width = 1;
+ gr_values.line_style = LineSolid;
+ gr_context = XCreateGC(display, window, GCForeground | GCLineWidth |
+ GCLineStyle, &gr_values);
+ XStoreName(display, window, "diagnostics");
+ /*
+ * Do not allow the window to be resized
+ */
+ memset(&sizehints, 0, sizeof(sizehints));
+ sizehints.min_width = sizehints.max_width = WIDTH;
+ sizehints.min_height = sizehints.max_height = HEIGHT;
+ sizehints.flags = PMinSize | PMaxSize;
+ XSetWMNormalHints(display, window, &sizehints);
+ XMapWindow(display, window);
+ XSynchronize(display, 1);
+ return 0;
+}
+
+#undef WIDTH
+#undef HEIGHT
+
+/* ---------------------------------------------------------------------- */
+
+static void closewindow(void)
+{
+ if (!display)
+ return;
+ XDestroyWindow(display, window);
+ XCloseDisplay(display);
+ display = NULL;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define XCOORD(x) ((x) * xm)
+#define YCOORD(y) ((SHRT_MAX - (int)(y)) * winattrs.height / USHRT_MAX)
+
+static void drawdata(short *data, int len, int replace, int xm)
+{
+ int cnt;
+ GC gc;
+ XGCValues gcv;
+ XWindowAttributes winattrs;
+
+ if (!display || !pixmap)
+ return;
+ XGetWindowAttributes(display, window, &winattrs);
+ gcv.line_width = 1;
+ gcv.line_style = LineSolid;
+ gc = XCreateGC(display, pixmap, GCLineWidth | GCLineStyle, &gcv);
+ XSetState(display, gc, col_background, col_background, GXcopy,
+ AllPlanes);
+ if (replace)
+ XFillRectangle(display, pixmap, gc, 0, 0,
+ winattrs.width, winattrs.height);
+ else
+ XCopyArea(display, window, pixmap, gr_context, 0, 0,
+ winattrs.width, winattrs.height, 0, 0);
+ XSetForeground(display, gc, col_trace);
+ for (cnt = 0; cnt < len-1; cnt++)
+ XDrawLine(display, pixmap, gc, XCOORD(cnt), YCOORD(data[cnt]),
+ XCOORD(cnt+1), YCOORD(data[cnt+1]));
+ XSetForeground(display, gc, col_zeroline);
+ XDrawLine(display, pixmap, gc, 0, YCOORD(0), winattrs.width,
+ YCOORD(0));
+ XCopyArea(display, pixmap, window, gr_context, 0, 0, winattrs.width,
+ winattrs.height, 0, 0);
+ XFreeGC(display, gc);
+ XSync(display, 0);
+}
+
+#undef XCOORD
+#undef YCOORD
+
+/* ---------------------------------------------------------------------- */
+
+#define XCOORD(x) ((SHRT_MAX - (int)(x)) * winattrs.width / USHRT_MAX)
+#define YCOORD(y) ((SHRT_MAX - (int)(y)) * winattrs.height / USHRT_MAX)
+
+static void drawconstell(short *data, int len)
+{
+ int cnt;
+ GC gc;
+ XGCValues gcv;
+ XWindowAttributes winattrs;
+
+ if (!display || !pixmap)
+ return;
+ XGetWindowAttributes(display, window, &winattrs);
+ gcv.line_width = 1;
+ gcv.line_style = LineSolid;
+ gc = XCreateGC(display, pixmap, GCLineWidth | GCLineStyle, &gcv);
+ XSetState(display, gc, col_background, col_background, GXcopy,
+ AllPlanes);
+ XCopyArea(display, window, pixmap, gr_context, 0, 0,
+ winattrs.width, winattrs.height, 0, 0);
+ XSetForeground(display, gc, col_trace);
+ for (cnt = 0; cnt < len-1; cnt += 2)
+ XDrawPoint(display, pixmap, gc,
+ XCOORD(data[cnt]), YCOORD(data[cnt+1]));
+ XSetForeground(display, gc, col_zeroline);
+ XDrawLine(display, pixmap, gc, 0, YCOORD(0), winattrs.width, YCOORD(0));
+ XDrawLine(display, pixmap, gc, XCOORD(0), 0, XCOORD(0), winattrs.height);
+ XCopyArea(display, pixmap, window, gr_context, 0, 0, winattrs.width,
+ winattrs.height, 0, 0);
+ XFreeGC(display, gc);
+ XSync(display, 0);
+}
+
+#undef XCOORD
+#undef YCOORD
+
+/* ---------------------------------------------------------------------- */
+
+static void clearwindow(void)
+{
+ XWindowAttributes winattrs;
+ GC gc;
+ XGCValues gcv;
+
+ if (!display || !pixmap)
+ return;
+ XGetWindowAttributes(display, window, &winattrs);
+ gcv.line_width = 1;
+ gcv.line_style = LineSolid;
+ gc = XCreateGC(display, pixmap, GCLineWidth | GCLineStyle, &gcv);
+ XSetState(display, gc, col_background, col_background, GXcopy,
+ AllPlanes);
+ XFillRectangle(display, pixmap, gc, 0, 0,
+ winattrs.width, winattrs.height);
+ XSetForeground(display, gc, col_zeroline);
+ XClearArea(display, window, 0, 0, 0, 0, False);
+ XCopyArea(display, pixmap, window, gr_context, 0, 0, winattrs.width,
+ winattrs.height, 0, 0);
+ XFreeGC(display, gc);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static Bool predicate(Display *display, XEvent *event, char *arg)
+{
+ return True;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static char *getkey(void)
+{
+ XWindowAttributes winattrs;
+ XEvent evt;
+ static char kbuf[32];
+ int i;
+
+ if (!display)
+ return NULL;
+ XSync(display, 0);
+ while (XCheckIfEvent(display, &evt, predicate, NULL)) {
+ switch (evt.type) {
+ case KeyPress:
+ i = XLookupString((XKeyEvent *)&evt, kbuf, sizeof(kbuf)-1,
+ NULL, NULL);
+ if (!i)
+ return NULL;
+ kbuf[i] = 0;
+ return kbuf;
+ case DestroyNotify:
+ XCloseDisplay(display);
+ display = NULL;
+ return NULL;
+ case Expose:
+ XGetWindowAttributes(display, window, &winattrs);
+ XCopyArea(display, pixmap, window, gr_context, 0, 0,
+ winattrs.width, winattrs.height, 0, 0);
+ break;
+ default:
+ break;
+ }
+ }
+ return NULL;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void printmode(unsigned int mode, unsigned int trigger)
+{
+ printf("Source: %s%s\n", (mode == SM_DIAGMODE_DEMOD) ?
+ "demodulator (eye diagram)" : "input (oscilloscope)",
+ (trigger & SM_DIAGFLAG_DCDGATE) ? " gated with DCD" : "");
+}
+
+/* ---------------------------------------------------------------------- */
+
+static const char *usage_str =
+"[-d display] [-i smif] [-c] [-e]\n"
+" -d: display host\n"
+" -i: specify the name of the baycom kernel driver interface\n"
+" -c: toggle carrier trigger\n"
+" -e: eye diagram mode\n\n"
+" -p: constellation plot\n\n";
+
+int main(int argc, char *argv[])
+{
+ char *disp = NULL;
+ unsigned int mode = HDRVC_DIAGMODE_INPUT;
+ unsigned int trigger = 0;
+ unsigned int ifflags;
+ short data[256];
+ char *cp;
+ int ret;
+ unsigned int samplesperbit;
+
+ progname = *argv;
+ printf("%s: Version 0.2; (C) 1996-1997 by Thomas Sailer HB9JNX/AE4WA\n", *argv);
+ hdrvc_args(&argc, argv, "sm0");
+ while ((ret = getopt(argc, argv, "d:ecp")) != -1) {
+ switch (ret) {
+ case 'd':
+ disp = optarg;
+ break;
+ case 'e':
+ mode = HDRVC_DIAGMODE_DEMOD;
+ trigger = HDRVC_DIAGFLAG_DCDGATE;
+ break;
+ case 'c':
+ trigger ^= HDRVC_DIAGFLAG_DCDGATE;
+ break;
+ case 'p':
+ mode = HDRVC_DIAGMODE_CONSTELLATION;
+ break;
+ default:
+ printf("usage: %s %s", *argv, usage_str);
+ exit(-1);
+ }
+ }
+ hdrvc_init();
+ ifflags = hdrvc_get_ifflags();
+ if (!(ifflags & IFF_UP)) {
+ fprintf(stderr, "interface %s down\n", hdrvc_ifname());
+ exit(1);
+ }
+ if (!(ifflags & IFF_RUNNING)) {
+ fprintf(stderr, "interface %s not running\n", hdrvc_ifname());
+ exit(1);
+ }
+ printmode(mode, trigger);
+ for (;;) {
+ if ((ret = hdrvc_diag2(mode, trigger, data, sizeof(data) / sizeof(short),
+ &samplesperbit)) < 0) {
+ perror("hdrvc_diag2");
+ exit(1);
+ }
+ if (ret > 0) {
+ if (!display) {
+ openwindow(disp, mode == HDRVC_DIAGMODE_CONSTELLATION,
+ samplesperbit);
+ clearwindow();
+ }
+ if (mode == SM_DIAGMODE_CONSTELLATION)
+ drawconstell(data, ret);
+ else
+ drawdata(data, ret, mode == HDRVC_DIAGMODE_INPUT,
+ mode == HDRVC_DIAGMODE_INPUT ? 5:xmul);
+ } else
+ usleep(100000L);
+ if (display) {
+ if ((cp = getkey())) {
+ for (; *cp; cp++) {
+ printf("char pressed: '%c'\n", *cp);
+ switch (*cp) {
+ case 'c':
+ case 'C':
+ clearwindow();
+ printmode(mode, trigger);
+ break;
+ case 'q':
+ case 'Q':
+ closewindow();
+ break;
+ case 'i':
+ case 'I':
+ if (mode == HDRVC_DIAGMODE_CONSTELLATION)
+ break;
+ mode = HDRVC_DIAGMODE_INPUT;
+ clearwindow();
+ printmode(mode, trigger);
+ break;
+ case 'e':
+ case 'E':
+ if (mode == HDRVC_DIAGMODE_CONSTELLATION)
+ break;
+ mode = HDRVC_DIAGMODE_DEMOD;
+ clearwindow();
+ printmode(mode, trigger);
+ break;
+ case 'd':
+ case 'D':
+ trigger ^= HDRVC_DIAGFLAG_DCDGATE;
+ clearwindow();
+ printmode(mode, trigger);
+ break;
+ }
+ }
+ }
+ if (!display)
+ exit(0);
+ }
+ }
+}
+
+/* ---------------------------------------------------------------------- */
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