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Panalyzer.c
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Panalyzer.c
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/*
* Panalyzer. A Logic Analyzer for the RaspberryPi
* Copyright (c) 2012 Richard Hirst <richardghirst@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdint.h>
#include <gtk/gtk.h>
#include "panalyzer.h"
GtkEntry *Status[4];
GtkWidget *DrawingArea;
uint8_t channels[] = DEF_CHANNELS;
struct sigdata_s {
uint32_t sample;
uint32_t levels;
};
typedef struct sigdata_s sigdata_t;
typedef struct sigdata_s *sigdata_p;
int num_samples;
sigdata_p sigdata;
uint32_t *tracedata;
int sigcnt;
int zoom_down;
int zooming;
int cursor1;
int cursor2;
int trigger_position = 0;
int buffer_size = 10000;
int run_mode = 0;
panctl_t panctl;
panctl_t prev_panctl = DEF_PANCTL;
panctl_t def_panctl = DEF_PANCTL;
struct view_s {
int left_margin, right_margin, top, spacing, trace_height, tails;
int first_sample, last_sample;
int show_handles;
GdkRectangle area;
GdkRectangle handle1;
GdkRectangle handle2;
};
typedef struct view_s view_t;
typedef view_t *view_p;
view_t preview = {
20, 10, 6, 8, 5, 4,
0, 0,
0,
{ 0 }
};
view_t mainview = {
20, 10, 50, 25, 15, 10,
0, 0,
1,
{ 0 }
};
GtkWidget *main_application_window;
/* Surface to store current scribbles */
static cairo_surface_t *surface = NULL;
static cairo_surface_t *preview_cursor = NULL;
static cairo_surface_t *main_cursor = NULL;
static cairo_surface_t *main_cursor_off = NULL;
static int surface_width;
static void error_dialog(const char *fmt, ...);
static void do_draw(GtkWidget *widget);
static void prepopulate_data(void);
static int
sam2pix(view_t *view, int sample)
{
int samples = view->last_sample - view->first_sample;
sample -= view->first_sample;
return (int)(((double)(surface_width - view->left_margin - view->right_margin) * sample / samples) + view->left_margin + 0.5);
}
static int
pix2sam(view_t *view, int pix)
{
int samples = view->last_sample - view->first_sample;
pix -= view->left_margin;
return (int)(((double)(samples) * pix / (surface_width - view->left_margin - view->right_margin)) + view->first_sample + 0.5);
}
static void set_status(int entry, const char *fmt, ...)
{
va_list ap;
char str[128];
va_start(ap, fmt);
vsnprintf(str, 127, fmt, ap);
va_end(ap);
gtk_entry_set_text(Status[entry], str);
}
static void update_delta(void)
{
int delta = abs(cursor2 - cursor1);
if (delta > 1000)
set_status(2, "delta %.3fms", (float)delta/1000);
else
set_status(2, "delta %dus", delta);
}
static void
clear_surface (void)
{
cairo_t *cr;
cr = cairo_create (surface);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_destroy (cr);
}
/* Create a new surface of the appropriate size to store our scribbles */
gboolean
configure_event_cb (GtkWidget *widget,
GdkEventConfigure *event,
gpointer data)
{
if (surface)
cairo_surface_destroy (surface);
if (preview_cursor)
cairo_surface_destroy(preview_cursor);
if (main_cursor)
cairo_surface_destroy(main_cursor);
if (main_cursor_off)
cairo_surface_destroy(main_cursor_off);
surface_width = gtk_widget_get_allocated_width (widget);
surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
preview_cursor = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR_ALPHA,
1,
sizeof(channels) * preview.spacing + preview.tails);
main_cursor = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR_ALPHA,
7,
sizeof(channels) * mainview.spacing + mainview.tails + 7);
main_cursor_off = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR_ALPHA,
7, 7);
cairo_t *cr = cairo_create(preview_cursor);
cairo_set_line_width(cr, 1);
cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
cairo_set_source_rgba(cr, 0.25, 0.25, 1.0, 1.0);
cairo_move_to(cr, 0.5, 0.5);
cairo_line_to(cr, 0.5, sizeof(channels) * preview.spacing + preview.tails - 0.5);
cairo_stroke(cr);
cairo_destroy(cr);
mainview.top = sizeof(channels) * preview.spacing + preview.top + 10;
cr = cairo_create(main_cursor);
cairo_set_line_width(cr, 1);
cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
cairo_set_source_rgba(cr, 0.25, 0.25, 1.0, 1.0);
cairo_move_to(cr, 3.5, 0.5);
cairo_line_to(cr, 3.5, sizeof(channels) * mainview.spacing + mainview.tails - 0.5);
cairo_stroke(cr);
cairo_rectangle(cr, 0, sizeof(channels) * mainview.spacing + mainview.tails, 7, 7);
cairo_fill(cr);
cairo_destroy(cr);
cr = cairo_create(main_cursor_off);
cairo_set_source_rgba(cr, 0.25, 0.25, 1.0, 1.0);
cairo_rectangle(cr, 0, 0, 7, 7);
cairo_fill(cr);
cairo_destroy(cr);
/* Initialize the surface to white */
clear_surface ();
do_draw(widget);
/* We've handled the configure event, no need for further processing. */
return TRUE;
}
/* Redraw the screen from the surface. Note that the ::draw
* signal receives a ready-to-be-used cairo_t that is already
* clipped to only draw the exposed areas of the widget
*/
gboolean
draw_cb (GtkWidget *widget,
cairo_t *cr,
gpointer data)
{
double x1,x2,y1,y2;
cairo_clip_extents(cr,&x1,&y1,&x2,&y2);
//g_print("draw_cb: %g %g %g %g\n",x1,y1,x2,y2);
// position 'surface' over the drawing area at 0,0, then paint clipped area of drawing area
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
void do1cursor(cairo_t *cr, int cur) {
// position 'cursor' over the drawing area at cx,0, the paint the clipped area of drawing area
cairo_set_source_surface (cr, preview_cursor, sam2pix(&preview, cur), preview.top);
cairo_paint (cr);
int mx = sam2pix(&mainview, cur);
if (mx < mainview.left_margin) {
cairo_set_source_surface (cr, main_cursor_off, mainview.left_margin-3, mainview.top + sizeof(channels) * mainview.spacing + mainview.tails);
} else if (mx > surface_width - mainview.right_margin) {
cairo_set_source_surface (cr, main_cursor_off, surface_width - mainview.right_margin - 3, mainview.top + sizeof(channels) * mainview.spacing + mainview.tails);
} else {
cairo_set_source_surface (cr, main_cursor, mx-3, mainview.top);
}
cairo_paint (cr);
}
do1cursor(cr, cursor1);
do1cursor(cr, cursor2);
return FALSE;
}
static gint in_rectangle(GdkRectangle *r, GdkEventButton *p) {
if (p->x < r->x || p->y < r->y || p->x > r->x+r->width || p->y > r->y + r->height)
return 0;
else
return 1;
}
gboolean button_press_event_cb(GtkWidget *widget, GdkEventButton *event,
gpointer data) {
/* paranoia check, in case we haven't gotten a configure event */
if (surface == NULL)
return FALSE;
if (event->button == 1) {
zoom_down = event->x;
if (in_rectangle(&preview.area, event))
zooming = 1;
else if (in_rectangle(&mainview.area, event))
zooming = 2;
else if (in_rectangle(&mainview.handle1, event))
zooming = 3;
else if (in_rectangle(&mainview.handle2, event))
zooming = 4;
}
return TRUE;
}
gboolean
button_release_event_cb (GtkWidget *widget,
GdkEventButton *event,
gpointer data)
{
if (event->button == 1) {
if (zooming == 1 || zooming == 2) {
int zoom_up = event->x;
int width = surface_width - mainview.left_margin - mainview.right_margin;
int zoom_lo = (zoom_down < zoom_up ? zoom_down : zoom_up) - mainview.left_margin;
int zoom_hi = (zoom_down > zoom_up ? zoom_down : zoom_up) - mainview.left_margin;
int handle_up = zoom_up - mainview.left_margin;
if (handle_up < 0)
handle_up = 0;
else if (handle_up > width)
handle_up = width;
if (zoom_lo < 0)
zoom_lo = 0;
if (zoom_hi >= width)
zoom_hi = width;
if (zooming == 1) {
if (abs(zoom_up - zoom_down) < 2)
return TRUE;
mainview.first_sample = (int)((double)zoom_lo * prev_panctl.num_samples / width);
mainview.last_sample = (int)((double)zoom_hi * prev_panctl.num_samples / width);
} else if (zooming == 2){
int offset = mainview.first_sample;
int samples = mainview.last_sample - mainview.first_sample;
if (abs(zoom_up - zoom_down) < 2)
return TRUE;
mainview.first_sample = (int)((double)zoom_lo * samples / width + offset);
mainview.last_sample = (int)((double)zoom_hi * samples / width + offset);
}
do_draw(widget);
}
zooming = 0;
}
return TRUE;
}
gboolean
motion_notify_event_cb (GtkWidget *widget,
GdkEventMotion *event,
gpointer data)
{
int x, y;
GdkModifierType state;
/* paranoia check, in case we haven't gotten a configure event */
if (surface == NULL)
return FALSE;
if (event->is_hint)
gdk_window_get_pointer(event->window, &x, &y, &state);
else {
x = event->x;
y = event->y;
state = event->state;
}
if (state != GDK_BUTTON1_MASK || (zooming != 3 && zooming != 4))
return FALSE;
if (x < mainview.left_margin)
x = mainview.left_margin;
else if (x > surface_width - mainview.right_margin)
x = surface_width - mainview.right_margin;
void do1cursor(int *cursor, int x, GdkRectangle *rect)
{
int opx = sam2pix(&preview, *cursor);
int omx = sam2pix(&mainview, *cursor);
*cursor = pix2sam(&mainview, x);
int npx = sam2pix(&preview, *cursor);
int nmx = sam2pix(&mainview, *cursor); // Should = x ...
if (omx < mainview.left_margin)
omx = mainview.left_margin;
else if (omx > surface_width - mainview.right_margin)
omx = surface_width - mainview.right_margin;
//g_print("moved to %d (%d,%d,%d)\n", cursor1,omx,x,nmx);
// gdk_window_process_updates() call prevents the two areas being combined in to one larger one
// Maybe try XFlush (GDK_DISPLAY ());
gtk_widget_queue_draw_area (widget, opx, preview.top, 1, sizeof(channels) * preview.spacing + preview.tails);
gtk_widget_queue_draw_area (widget, npx, preview.top, 1, sizeof(channels) * preview.spacing + preview.tails);
gdk_window_process_updates(event->window, 1);
gtk_widget_queue_draw_area (widget, omx-3, mainview.top, 7, sizeof(channels) * mainview.spacing + mainview.tails + 7);
gtk_widget_queue_draw_area (widget, nmx-3, mainview.top, 7, sizeof(channels) * mainview.spacing + mainview.tails + 7);
gdk_window_process_updates(event->window, 1);
rect->x = nmx - 3;
}
if (zooming == 3)
do1cursor(&cursor1, x, &mainview.handle1);
else
do1cursor(&cursor2, x, &mainview.handle2);
update_delta();
return TRUE;
}
// TODO This is modal, but it doesn't stop the calling code continuing to run... is that a problem?
static void error_dialog(const char *fmt, ...)
{
GtkWidget *dialog, *label, *content_area;
va_list ap;
char str[128];
va_start(ap, fmt);
vsnprintf(str, 127, fmt, ap);
va_end(ap);
/* Create the widgets */
dialog = gtk_dialog_new_with_buttons ("Error",
GTK_WINDOW(main_application_window),
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_STOCK_DIALOG_ERROR,
GTK_RESPONSE_NONE,
NULL);
content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
label = gtk_label_new (str);
/* Ensure that the dialog box is destroyed when the user responds */
g_signal_connect_swapped (dialog,
"response",
G_CALLBACK (gtk_widget_destroy),
dialog);
/* Add the label, and show everything we've added to the dialog */
gtk_container_add (GTK_CONTAINER (content_area), label);
gtk_widget_show_all (dialog);
}
static void prepopulate_data(void)
{
if (tracedata)
free(tracedata);
if (sigdata)
free(sigdata);
tracedata = NULL;
sigdata = NULL;
memcpy(&panctl, &def_panctl, sizeof(panctl));
memcpy(&prev_panctl, &def_panctl, sizeof(panctl));
sigdata = (sigdata_p)malloc(sizeof(sigdata_t)*2);
sigcnt = 1;
sigdata[0].sample = 0;
sigdata[0].levels = 0;
sigdata[1].sample = panctl.num_samples;
sigdata[1].levels = 0;
preview.first_sample = mainview.first_sample = 0;
preview.last_sample = mainview.last_sample = panctl.num_samples;
cursor1 = panctl.num_samples/50;
cursor2 = panctl.num_samples - cursor1;
}
static void do_draw_trigger(GtkWidget *widget, cairo_t *cr, view_p view,
int position) {
int visible_samples = view->last_sample - view->first_sample;
int top = view->top;
int bot = top + sizeof(channels) * view->spacing;
int x;
if (position < view->first_sample || position >= view->last_sample)
return;
cairo_set_source_rgb(cr, 1.0, 0.25, 0.25);
x = (int) ((double) (surface_width - view->left_margin
- view->right_margin) * (position - view->first_sample)
/ visible_samples);
cairo_move_to(cr, x + view->left_margin + 0.5, top + 0.5);
cairo_line_to(cr, x + view->left_margin + 0.5, bot + view->tails + 0.5);
cairo_stroke(cr);
if (view->show_handles) {
cairo_rectangle(cr, x - 3 + view->left_margin, bot + view->tails, 7, 7);
cairo_fill(cr);
}
cairo_set_source_rgb(cr, 0, 0, 0);
}
static void do_draw1(GtkWidget *widget, cairo_t *cr, view_p view)
{
int chan;
int xmin = view->left_margin;
int xmax = surface_width - view->right_margin;
int visible_samples = view->last_sample - view->first_sample;
double xscale = (double)(xmax-xmin)/visible_samples;
int trigger_samp;
if (prev_panctl.trigger_point == 0)
trigger_samp = prev_panctl.num_samples / 20;
else if (prev_panctl.trigger_point == 1)
trigger_samp = prev_panctl.num_samples / 2;
else
trigger_samp = prev_panctl.num_samples * 19 / 20;
do_draw_trigger(widget, cr, view, trigger_samp);
for (chan = 0; chan < sizeof(channels); chan++) {
int logic0 = view->top + (chan+1) * view->spacing;
int logic1 = logic0 - view->trace_height;
int sig;
int psig = 0;
int lastx = -1;
for (sig = 1; sig < sigcnt; sig++) {
if ((sigdata[psig].levels ^ sigdata[sig].levels) & (1<<channels[chan])) {
if (sigdata[sig].sample < view->first_sample) {
}
else if (sigdata[psig].sample < view->first_sample && sigdata[sig].sample >= view->first_sample) {
int x1 = xmin;
int y1 = sigdata[psig].levels & (1<<channels[chan]) ? logic1 : logic0;
int x2 = (int)(xscale * (sigdata[sig].sample - view->first_sample) + xmin + 0.5);
if (x2 > xmax)
x2 = xmax;
int y2 = y1 == logic0 ? logic1 : logic0;
cairo_move_to(cr,x1+0.5,y1+0.5);
cairo_line_to(cr,x2+0.5,y1+0.5);
if (x2 < xmax) {
cairo_move_to(cr,x2+0.5,y1+0.5);
cairo_line_to(cr,x2+0.5,y2+0.5);
}
}
else if (sigdata[sig].sample > view->last_sample) {
break;
} else {
int x1 = (int)(xscale * (sigdata[psig].sample - view->first_sample) + xmin + 0.5);
int y1 = sigdata[psig].levels & (1<<channels[chan]) ? logic1 : logic0;
int x2 = (int)(xscale * (sigdata[sig].sample - view->first_sample) + xmin + 0.5);
int y2 = y1 == logic0 ? logic1 : logic0;
if (x2 != lastx) {
cairo_move_to(cr,x1+0.5,y1+0.5);
cairo_line_to(cr,x2+0.5,y1+0.5);
cairo_move_to(cr,x2+0.5,y1+0.5);
cairo_line_to(cr,x2+0.5,y2+0.5);
}
lastx = x2;
}
psig = sig;
}
}
// g_print("sigcnt %d\n", sigcnt);
int x1 = (int)(xscale * (sigdata[psig].sample - view->first_sample) + xmin + 0.5);
int y1 = sigdata[psig].levels & (1<<channels[chan]) ? logic1 : logic0;
int x2 = (int)(xscale * (sigdata[sig].sample - view->first_sample) + xmin + 0.5);
if (sigdata[psig].sample > view->last_sample)
x1 = xmax;
else if (sigdata[psig].sample < view->first_sample)
x1 = xmin;
if (sigdata[sig].sample >= view->last_sample)
x2 = xmax;
if (x1 != x2) {
cairo_move_to(cr,x1+0.5,y1+0.5);
cairo_line_to(cr,x2+0.5,y1+0.5);
}
}
cairo_stroke(cr);
}
static void do_draw(GtkWidget *widget)
{
cairo_t *cr;
double x1,y1,x2,y2;
clear_surface();
/* Paint to the surface, where we store our state */
cr = cairo_create (surface);
cairo_clip_extents(cr,&x1,&y1,&x2,&y2);
cairo_set_line_width(cr, 1);
cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
int c;
for (c = 0; c < sizeof(channels); c++) {
char s[4];
sprintf(s, "%d", c);
cairo_move_to(cr, 5, mainview.top + mainview.spacing*c+22);
cairo_show_text(cr, s);
}
int zoom1 = (int)((double)(surface_width - preview.left_margin - preview.right_margin) * mainview.first_sample / prev_panctl.num_samples) + preview.left_margin;
int zoom2 = (int)((double)(surface_width - preview.left_margin - preview.right_margin) * mainview.last_sample / prev_panctl.num_samples) + preview.left_margin + 1;
cairo_set_source_rgb(cr, 1.0, 0.75, 0.75);
cairo_rectangle(cr, zoom1, preview.top, zoom2-zoom1, preview.spacing * sizeof(channels) + preview.tails);
cairo_fill(cr);
preview.area.x = preview.left_margin;
preview.area.y = preview.top;
preview.area.width = surface_width - preview.left_margin - preview.right_margin;
preview.area.height = preview.spacing * sizeof(channels);
mainview.area.x = mainview.left_margin;
mainview.area.y = mainview.top;
mainview.area.width = surface_width - mainview.left_margin - mainview.right_margin;
mainview.area.height = mainview.spacing * sizeof(channels);
c = sam2pix(&mainview, cursor1);
if (c < mainview.left_margin)
c = mainview.left_margin;
else if (c > surface_width - mainview.right_margin)
c = surface_width - mainview.right_margin;
mainview.handle1.x = c - 3;
mainview.handle1.y = mainview.top + sizeof(channels) * mainview.spacing + mainview.tails;
mainview.handle1.width = 7;
mainview.handle1.height = 7;
c = sam2pix(&mainview, cursor2);
if (c < mainview.left_margin)
c = mainview.left_margin;
else if (c > surface_width - mainview.right_margin)
c = surface_width - mainview.right_margin;
mainview.handle2.x = c - 3;
mainview.handle2.y = mainview.top + sizeof(channels) * mainview.spacing + mainview.tails;
mainview.handle2.width = 7;
mainview.handle2.height = 7;
int period = (mainview.last_sample - mainview.first_sample); // in microseconds
int ideal_steps = (surface_width-20) / 30;
int best_inc = 1;
int i = 1;
int m = 1;
int n = ideal_steps;
do {
n = period / (i * m);
int diff = abs(n - ideal_steps);
if (diff < period / best_inc)
best_inc = i * m;
if (i == 1)
i = 2;
else if (i == 2)
i = 5;
else {
i = 1;
m *= 10;
}
} while (n > ideal_steps / 2);
int xmin = mainview.left_margin;
int xmax = surface_width - mainview.right_margin;
double xscale = (double)(xmax-xmin)/period;
cairo_set_source_rgb(cr, 1.0, 0.75, 0.75);
for (i = 0; i < period; i += best_inc) {
int x = (int)(xscale * i + mainview.left_margin + 0.5);
cairo_move_to(cr,x+0.5,mainview.top+0.5);
cairo_line_to(cr,x+0.5,mainview.top+mainview.spacing*sizeof(channels)+mainview.tails+0.5);
}
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
if (best_inc >= 1000)
set_status(3, "%dms/div", best_inc / 1000);
else
set_status(3, "%dus/div", best_inc);
update_delta();
do_draw1(widget, cr, &preview);
do_draw1(widget, cr, &mainview);
// cairo_path_extents(cr,&x1,&y1,&x2,&y2);
cairo_stroke(cr);
cairo_destroy (cr);
/* Now invalidate the affected region of the drawing area. */
// g_print("%g %g %g %g\n",x1,y1,x2,y2);
gtk_widget_queue_draw_area (widget, x1, y1, x2-x1, y2-y1);
}
void do_zoom(GtkWidget *widget, gpointer data) {
int offset = preview.last_sample * (100 - (int) (long) data) / 2 / 100;
int num_samples;
mainview.first_sample = offset;
mainview.last_sample = preview.last_sample - offset;
num_samples = mainview.last_sample - mainview.first_sample;
cursor1 = mainview.first_sample + num_samples / 50;
cursor2 = mainview.last_sample - num_samples / 50;
do_draw(DrawingArea);
}
void do_run(GtkWidget *widget, gpointer data) {
int fd, res;
#if 1
fd = open("/dev/panalyzer", O_RDWR);
if (fd >= 0) {
res = write(fd, &panctl, sizeof(panctl));
if (res != sizeof(panctl)) {
error_dialog("Couldn't write device: %s", strerror(errno));
close(fd);
return;
}
} else {
error_dialog("Couldn't open device (%s), trying trace.bin", strerror(errno));
#else
{
#endif
fd = open("trace.bin", O_RDONLY);
if (fd < 0) {
error_dialog("Couldn't open trace.bin: %s", strerror(errno));
return;
}
}
res = lseek(fd, 0, SEEK_SET);
if (res < 0) {
error_dialog("Couldn't seek on data: %s", strerror(errno));
close(fd);
return;
}
res = read(fd, &panctl, sizeof(panctl));
if (res < 0) {
if (run_mode == 0)
error_dialog("Couldn't read panctl: %s", strerror(errno));
close(fd);
return;
} else if (res != sizeof(panctl)) {
error_dialog("Couldn't read panctl (%d read)", res);
prepopulate_data();
close(fd);
do_draw(widget);
return;
}
if (panctl.magic != PAN_MAGIC) {
error_dialog("Bad magic in data");
prepopulate_data();
close(fd);
do_draw(widget);
return;
}
if (tracedata)
free(tracedata);
if (sigdata)
free(sigdata);
tracedata = NULL;
sigdata = NULL;
tracedata = (uint32_t *)malloc(panctl.num_samples * sizeof(uint32_t));
if (tracedata == NULL) {
error_dialog("Failed to malloc tracedata: %s", strerror(errno));
gtk_main_quit();
}
char *p = (char *)tracedata;
int siz = panctl.num_samples * sizeof(uint32_t);
int cnt = siz;
while (cnt) {
res = read(fd, p, cnt);
if (res >= 0) {
cnt -= res;
p += res;
}
else {
error_dialog("Failed to read tracedata (read %d of %d): %s",
siz - cnt, cnt, strerror(errno));
prepopulate_data();
close(fd);
do_draw(widget);
return;
}
}
close(fd);
// If we changed the buffer size since the last capture, reset zoom
// and cursor positions
if (panctl.num_samples != prev_panctl.num_samples) {
preview.first_sample = mainview.first_sample = 0;
preview.last_sample = mainview.last_sample = panctl.num_samples;
cursor1 = panctl.num_samples/50;
cursor2 = panctl.num_samples - cursor1;
}
memcpy(&prev_panctl, &panctl, sizeof(panctl));
uint32_t mask = 0;
int i;
for (i = 0; i < sizeof(channels); i++)
mask |= 1 << channels[i];
// TODO realloc sigdata as necessary
sigdata = (sigdata_p)malloc(sizeof(sigdata_t)*(panctl.num_samples+1));
if (sigdata == NULL) {
error_dialog("Failed to malloc sigdata: %s", strerror(errno));
gtk_main_quit();
}
sigcnt = 0;
sigdata[sigcnt].sample = 0;
sigdata[sigcnt].levels = tracedata[0] & mask;
for (i = 1; i < panctl.num_samples; i++) {
// tracedata[i] ^= (i&1)<<4;
if ((tracedata[i] & mask) != sigdata[sigcnt].levels) {
sigdata[++sigcnt].sample = i;
sigdata[sigcnt].levels = tracedata[i] & mask;
}
}
sigcnt++;
sigdata[sigcnt].sample = i;
sigdata[sigcnt].levels = sigdata[sigcnt-1].levels;
do_draw(widget);
// do_analyze();
}
void do_run_mode(GtkWidget *widget, gpointer data) {
run_mode = (int)(long)data;
}
void do_trigger_position(GtkWidget *widget, gpointer data) {
panctl.trigger_point = (int)(long)data;
}
void do_buffer_size(GtkWidget *widget, gpointer data) {
panctl.num_samples = (int)(long)data * 1000;
}
static gboolean continuous_mode_active = FALSE;
// TODO: Is this called in a different thread? Do we need locks?
static gboolean
time_handler(GtkWidget *widget)
{
static volatile int processing;
static volatile int ticker;
if (processing)
;
else if (ticker > 0) {
ticker--;
} else {
processing = 1;
ticker = 5;
do_run(DrawingArea, NULL);
processing = 0;
}
return continuous_mode_active;
}
gboolean do_run_button(GtkWidget *widget, GtkWidget *area)
{
if (continuous_mode_active) {
continuous_mode_active = FALSE;
gtk_tool_button_set_stock_id(GTK_TOOL_BUTTON(widget), GTK_STOCK_GO_FORWARD);
}
else if (run_mode == 1) {
continuous_mode_active = TRUE;
gtk_tool_button_set_stock_id(GTK_TOOL_BUTTON(widget), GTK_STOCK_STOP);
g_timeout_add(10, (GSourceFunc) time_handler, (gpointer) widget);
} else {
do_run(area, NULL);
}
return TRUE;
}
static void do_level_select(GtkWidget *widget, gpointer data) {
const char *levels = "01-";
char newtxt[2] = { 0 };
const gchar *txt = gtk_button_get_label(GTK_BUTTON(widget));
int i = strchr(levels, *txt) - levels;
if (++i >= strlen(levels))
i = 0;
newtxt[0] = levels[i];
gtk_button_set_label(GTK_BUTTON(widget), newtxt);
}
static void do_trig_enables(GtkWidget *widget, gpointer data) {
GtkWidget **enables = (GtkWidget **)(data);
int i;
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget))) {
for (i = MAX_TRIGGERS-1; i >= 0; i--) {
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(enables[i])))
break;
}
for (--i; i >= 0; i--) {
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(enables[i]), 1);
}
} else {
for (i = 0; i < MAX_TRIGGERS; i++) {
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(enables[i])) == 0)
break;
}
for (i++; i < MAX_TRIGGERS; i++) {
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(enables[i]), 0);
}
}
}
// Called when trigger samples changes... ensure value is numeric
static void do_trig_samples(GtkWidget *widget, gpointer data) {
const char *oldtxt = gtk_entry_get_text(GTK_ENTRY(widget));
char newtxt[8];
int i, j;
for (i = 0, j = 0; i < 7 && oldtxt[i]; i++) {
if (j == 0 && oldtxt[i] == '0')
continue;
if (isdigit(oldtxt[i]))
newtxt[j++] = oldtxt[i];
}
newtxt[j] = '\0';
gtk_entry_set_text(GTK_ENTRY(widget), newtxt);
}
// Called when trigger samples field loses focus, set to 1 if empty
static gboolean do_trig_samples_focus(GtkWidget *widget, gpointer data) {
const char *oldtxt = gtk_entry_get_text(GTK_ENTRY(widget));
if (!*oldtxt)
gtk_entry_set_text(GTK_ENTRY(widget), "1");
return FALSE;
}
void do_trigger_dialog(GtkWidget *widget, gpointer data) {
GtkWidget *dialog, *content_area;
int i, t;
GtkWidget *trig_enables[MAX_TRIGGERS];
GtkWidget *trig_samples[MAX_TRIGGERS];
GtkWidget *trig_levels[MAX_TRIGGERS][MAX_CHANNELS];
dialog = gtk_dialog_new_with_buttons("Trigger Conditions", NULL, 0,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, GTK_STOCK_OK, GTK_RESPONSE_OK, NULL);
content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
GtkWidget *grid = gtk_table_new(MAX_TRIGGERS+2, sizeof(channels)+3, FALSE);
gtk_container_add (GTK_CONTAINER(content_area), grid);
gtk_table_attach(GTK_TABLE(grid),
gtk_label_new("Channels"),
2, sizeof(channels)+2, 0, 1,
0, 0,
4, 4);
for (i = 0; i < sizeof(channels); i++) {
char txt[10];
sprintf(txt," [%d] ", i);
gtk_table_attach(GTK_TABLE(grid),
gtk_label_new(txt),
i+2, i+3, 1, 2,
0, 0,
4, 4);
}
gtk_table_attach(GTK_TABLE(grid),
gtk_label_new("Enable"),
1, 2, 1, 2,
0, 0,
4, 4);
gtk_table_attach(GTK_TABLE(grid),
gtk_label_new("Samples"),
sizeof(channels)+2, sizeof(channels)+3, 1, 2,
0, 0,
4, 4);
for (t = 0; t < MAX_TRIGGERS; t++) {
char txt[4];
sprintf(txt, "%d", t+1);
gtk_table_attach(GTK_TABLE(grid),
gtk_label_new(txt),
0, 1, t+2, t+3,
0, 0,
4, 4);
trig_enables[t] = gtk_check_button_new();
g_signal_connect(trig_enables[t], "toggled", G_CALLBACK(do_trig_enables), trig_enables);
gtk_table_attach(GTK_TABLE(grid),
trig_enables[t],
1, 2, t+2, t+3,
0, 0,
4, 4);
for (i = 0; i < sizeof(channels); i++) {
trig_levels[t][i] = gtk_button_new_with_label("-");
g_signal_connect(trig_levels[t][i], "clicked", G_CALLBACK(do_level_select), NULL);
gtk_table_attach(GTK_TABLE(grid),
trig_levels[t][i],
i+2, i+3, t+2, t+3,
GTK_FILL|GTK_EXPAND, 0,
4, 4);
}
trig_samples[t] = gtk_entry_new();
gtk_entry_set_text(GTK_ENTRY(trig_samples[t]), "1");
gtk_entry_set_max_length(GTK_ENTRY(trig_samples[t]), 6);
gtk_entry_set_width_chars(GTK_ENTRY(trig_samples[t]), 6);
gtk_entry_set_alignment(GTK_ENTRY(trig_samples[t]), 1);
g_signal_connect(trig_samples[t], "changed", G_CALLBACK(do_trig_samples), trig_samples);
g_signal_connect(trig_samples[t], "focus-out-event", G_CALLBACK(do_trig_samples_focus), trig_samples);
gtk_table_attach(GTK_TABLE(grid),
trig_samples[t],
sizeof(channels)+2, sizeof(channels)+3, t+2, t+3,
0, 0,
4, 4);
}
// OK, we built the dialog, now populate it with the correct settings
for (t = 0; t < MAX_TRIGGERS; t++) {
if (panctl.trigger[t].enabled)
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(trig_enables[t]), 1);
char txt[8];
if (panctl.trigger[t].min_samples == 0)
panctl.trigger[t].min_samples = 1;
sprintf(txt, "%d", panctl.trigger[t].min_samples);
gtk_entry_set_text(GTK_ENTRY(trig_samples[t]), txt);
for (i = 0; i < sizeof(channels); i++) {
if (panctl.trigger[t].mask & (1 << channels[i])) {
if (panctl.trigger[t].value & (1 << channels[i]))
gtk_button_set_label(GTK_BUTTON(trig_levels[t][i]), "1");
else
gtk_button_set_label(GTK_BUTTON(trig_levels[t][i]), "0");
}
}
}
gtk_widget_show_all(dialog);
// If they hit ok, record new settings
if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_OK) {
for (t = 0; t < MAX_TRIGGERS; t++) {
panctl.trigger[t].enabled = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(trig_enables[t]));
panctl.trigger[t].min_samples = atoi(gtk_entry_get_text(GTK_ENTRY(trig_samples[t])));
uint32_t mask = 0, value = 0;
for (i = 0; i < sizeof(channels); i++) {