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-rw-r--r--apps/demo_menu.c4
-rw-r--r--apps/recorder/oscillograph.c201
-rw-r--r--firmware/drivers/lcd.c17
-rw-r--r--firmware/drivers/lcd.h1
4 files changed, 223 insertions, 0 deletions
diff --git a/apps/demo_menu.c b/apps/demo_menu.c
index de625c5821..23cd7d1cb5 100644
--- a/apps/demo_menu.c
+++ b/apps/demo_menu.c
@@ -35,6 +35,7 @@
35 35
36extern Menu bounce(void); 36extern Menu bounce(void);
37extern Menu snow(void); 37extern Menu snow(void);
38extern Menu oscillograph(void);
38 39
39Menu demo_menu(void) 40Menu demo_menu(void)
40{ 41{
@@ -44,6 +45,9 @@ Menu demo_menu(void)
44 struct menu_items items[] = { 45 struct menu_items items[] = {
45 { str(LANG_BOUNCE), bounce }, 46 { str(LANG_BOUNCE), bounce },
46 { str(LANG_SNOW), snow }, 47 { str(LANG_SNOW), snow },
48#ifndef SIMULATOR
49 { "Oscillograph", oscillograph },
50#endif
47 }; 51 };
48 52
49 m=menu_init( items, sizeof items / sizeof(struct menu_items) ); 53 m=menu_init( items, sizeof items / sizeof(struct menu_items) );
diff --git a/apps/recorder/oscillograph.c b/apps/recorder/oscillograph.c
new file mode 100644
index 0000000000..c3b76c4626
--- /dev/null
+++ b/apps/recorder/oscillograph.c
@@ -0,0 +1,201 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2002 Philipp Pertermann
11 *
12 * All files in this archive are subject to the GNU General Public License.
13 * See the file COPYING in the source tree root for full license agreement.
14 *
15 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
16 * KIND, either express or implied.
17 *
18 ****************************************************************************/
19
20#include <stdlib.h>
21#include <sprintf.h>
22#include "menu.h"
23#include "lcd.h"
24#include "button.h"
25#include "mas.h"
26#include "system.h"
27
28/* The different drawing modes */
29#define DRAW_MODE_FILLED 0
30#define DRAW_MODE_OUTLINE 1
31#define DRAW_MODE_PIXEL 2
32#define DRAW_MODE_COUNT 3
33
34#define MAX_PEAK 0x8000
35
36/* number of ticks between two volume samples */
37static int speed = 1;
38/* roll == true -> lcd rolls */
39static bool roll = true;
40/* see DRAW_MODE_XXX constants for valid values */
41static int drawMode = DRAW_MODE_FILLED;
42
43/**
44 * Displays a vertically scrolling oscillosgraph using
45 * hardware scrolling of the display. The user can change
46 * speed
47 */
48Menu oscillograph(void)
49{
50 /* stores current volume value left */
51 int left;
52 /* stores current volume value right */
53 int right;
54 /* specifies the current position on the lcd */
55 int y = LCD_WIDTH - 1;
56
57 /* only needed when drawing lines */
58 int lastLeft = 0;
59 int lastRight = 0;
60 int lasty = 0;
61
62 bool exit = false;
63
64 /* the main loop */
65 while (!exit) {
66
67 /* read the volume info from MAS */
68 left = mas_codec_readreg(0xC) / (MAX_PEAK / (LCD_WIDTH / 2 - 2));
69 right = mas_codec_readreg(0xD) / (MAX_PEAK / (LCD_WIDTH / 2 - 2));
70
71 /* delete current line */
72 lcd_clearline(0, y, LCD_WIDTH-1, y);
73
74 switch (drawMode) {
75 case DRAW_MODE_FILLED:
76 lcd_drawline(LCD_WIDTH / 2 + 1 , y,
77 LCD_WIDTH / 2 + 1 + right, y);
78 lcd_drawline(LCD_WIDTH / 2 - 1 , y,
79 LCD_WIDTH / 2 - 1 -left , y);
80 break;
81
82 case DRAW_MODE_OUTLINE:
83 /* last position needed for lines */
84 lasty = MAX(y-1, 0);
85
86 /* Here real lines were neccessary because
87 anything else was ugly. */
88 lcd_drawline(LCD_WIDTH / 2 + right , y,
89 LCD_WIDTH / 2 + lastRight , lasty);
90 lcd_drawline(LCD_WIDTH / 2 - left , y,
91 LCD_WIDTH / 2 - lastLeft, lasty);
92
93 /* have to store the old values for drawing lines
94 the next time */
95 lastRight = right;
96 lastLeft = left;
97 break;
98
99 case DRAW_MODE_PIXEL:
100 /* straight and simple */
101 lcd_drawpixel(LCD_WIDTH / 2 + right, y);
102 lcd_drawpixel(LCD_WIDTH / 2 - left, y);
103 break;
104 }
105
106
107 /* increment and adjust the drawing position */
108 y++;
109 if (y >= LCD_HEIGHT)
110 y = 0;
111
112 /* I roll before update because otherwise the new
113 line would appear at the wrong end of the display */
114 if (roll)
115 lcd_roll(y);
116
117 /* now finally make the new sample visible */
118 lcd_update_rect(0, MAX(y-1, 0), LCD_WIDTH, 2);
119
120 /* There are two mechanisms to alter speed:
121 1.) slowing down is achieved by increasing
122 the time waiting for user input. This
123 mechanism uses positive values.
124 2.) speeding up is achieved by leaving out
125 the user input check for (-speed) volume
126 samples. For this mechanism negative values
127 are used.
128 */
129
130 if (speed >= 0 || ((speed < 0) && (y % (-speed) == 0))) {
131 bool draw = false;
132
133 /* speed values > 0 slow the oszi down. By user input
134 speed might become < 1. If a value < 1 was
135 passed user input would be disabled. Thus
136 it must be ensured that at least 1 is passed. */
137
138 /* react to user input */
139 switch (button_get_w_tmo(MAX(speed, 1))) {
140 case BUTTON_UP:
141 speed++;
142 draw = true;
143 break;
144
145 case BUTTON_DOWN:
146 speed--;
147 draw = true;
148 break;
149
150 case BUTTON_PLAY:
151 /* pause the demo */
152 button_get(true);
153 break;
154
155 case BUTTON_F1:
156 /* toggle rolling */
157 roll = !roll;
158 break;
159
160 case BUTTON_F2:
161 /* step through the display modes */
162 drawMode ++;
163 drawMode = drawMode % DRAW_MODE_COUNT;
164
165 /* lcd buffer might be rolled so that
166 the transition from LCD_HEIGHT to 0
167 takes place in the middle of the screen.
168 That produces ugly results in DRAW_MODE_OUTLINE
169 mode. If rolling is enabled this change will
170 be reverted before the next update anyway.*/
171 lcd_roll(0);
172 break;
173
174 case BUTTON_F3:
175 speed = 1;
176 draw = true;
177 break;
178
179 case BUTTON_OFF:
180 exit = true;
181 break;
182 }
183
184 if (draw) {
185 char buf[16];
186 snprintf(buf, sizeof buf, "Speed: %d", -speed);
187 lcd_putsxy(0, (y + LCD_HEIGHT - 8) % LCD_HEIGHT, buf, 0);
188 lcd_update_rect(0, (y + LCD_HEIGHT - 8) % LCD_HEIGHT,
189 LCD_WIDTH, 8);
190 }
191 }
192 }
193
194 /* restore to default roll position.
195 Looks funny if you forget to do this... */
196 lcd_roll(0);
197 lcd_update();
198
199 /* standard return */
200 return MENU_OK;
201}
diff --git a/firmware/drivers/lcd.c b/firmware/drivers/lcd.c
index 5240dfda42..8abc638175 100644
--- a/firmware/drivers/lcd.c
+++ b/firmware/drivers/lcd.c
@@ -1163,6 +1163,23 @@ static void scroll_thread(void)
1163 } 1163 }
1164} 1164}
1165 1165
1166#ifndef SIMULATOR
1167#ifdef HAVE_LCD_BITMAP
1168/**
1169 * Rolls up the lcd display by the specified amount of lines.
1170 * Lines that are rolled out over the top of the screen are
1171 * rolled in from the bottom again. This is a hardware
1172 * remapping only and all operations on the lcd are affected.
1173 * ->
1174 * @param int lines - The number of lines that are rolled.
1175 * The value must be 0 <= pixels < LCD_HEIGHT.
1176 */
1177void lcd_roll(int lines)
1178{
1179 lcd_write(true, LCD_SET_DISPLAY_START_LINE | (lines & (LCD_HEIGHT-1)));
1180}
1181#endif
1182#endif
1166 1183
1167/* ----------------------------------------------------------------- 1184/* -----------------------------------------------------------------
1168 * local variables: 1185 * local variables:
diff --git a/firmware/drivers/lcd.h b/firmware/drivers/lcd.h
index 23b3d75e76..8c89d4c057 100644
--- a/firmware/drivers/lcd.h
+++ b/firmware/drivers/lcd.h
@@ -116,6 +116,7 @@ extern void lcd_clearline( int x1, int y1, int x2, int y2 );
116extern void lcd_drawpixel(int x, int y); 116extern void lcd_drawpixel(int x, int y);
117extern void lcd_clearpixel(int x, int y); 117extern void lcd_clearpixel(int x, int y);
118extern void lcd_invertpixel(int x, int y); 118extern void lcd_invertpixel(int x, int y);
119extern void lcd_roll(int pixels);
119 120
120#endif /* CHARCELLS / BITMAP */ 121#endif /* CHARCELLS / BITMAP */
121 122
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-22 20:20:35 +0000