The arduino set contains a special building block, which is known from
\noperating panels of instruments. In former time only potentiometers were
\navailable, for example to be used for audio settings, but when selecting
\na menue a different way is ncessary. In game consoles incremental
\ndevices are also used. The main advantage is that you get a left or
\nright pulse, which a CPU can use directly to get the turn direction and
\nposition. In addition there is also a press button is integrated, for
\nexample to select something. Our example shows a counter on the two 7
\nsegement displays, which are incremented or decremented when turning the
\nknob. The devices deliver around 18 pulsed per revolution.<\/p>\n
Code: <\/p>\n
\/\/ 7segment Incrementalgeber \/\/ 8574T \/\/ 8574AT optional \/\/ ************************* \/\/ UMrechnungstabelle ASCI -> 7 Segment<\/p>\n \/\/ OFFSET code 32..5F \/\/ void display_seg1x(unsigned char i2cbaseadr, unsigned char ch1) void display_seg1xbin(unsigned char i2cbaseadr, unsigned char ch1) \/\/ Code neu: void setup() { pinMode(SWITCHA,INPUT_PULLUP); }<\/p>\n void loop() { break; The arduino set contains a special building block, which is known from operating panels of instruments. In former time only potentiometers were available, for example to be used for audio settings, but when selecting a menue a different way is ncessary. In game consoles incremental devices are also used. The main advantage is that you […]<\/p>\n","protected":false},"author":2,"featured_media":10282,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[517],"tags":[],"class_list":["post-10281","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorised-en-fr"],"yoast_head":"\n
\n#include
\n#define i2cseg7x2alsb1 (0x40>>1)
\n#define i2cseg7x2amsb1 (0x42>>1)
\n#define i2cseg7x2blsb1 (0x44>>1)
\n#define i2cseg7x2bmsb1 (0x46>>1)
\n#define i2cseg7x2clsb1 (0x48>>1)
\n#define i2cseg7x2cmsb1 (0x4A>>1)
\n#define i2cseg7x2dlsb1 (0x4C>>1)
\n#define i2cseg7x2dmsb1 (0x4E>>1)<\/p>\n
\n#define i2cseg7x2alsb2 (0x70>>1)
\n#define i2cseg7x2amsb2 (0x72>>1)
\n#define i2cseg7x2blsb2 (0x74>>1)
\n#define i2cseg7x2bmsb2 (0x76>>1)
\n#define i2cseg7x2clsb2 (0x78>>1)
\n#define i2cseg7x2cmsb2 (0x7A>>1)
\n#define i2cseg7x2dlsb2 (0x7C>>1)
\n#define i2cseg7x2dmsb2 (0x7E>>1)<\/p>\n
\n\/\/ 01
\n\/\/ 20 02
\n\/\/ 40
\n\/\/ 10 04
\n\/\/ 08
\n\/\/ 80
\n\/\/ ************************<\/p>\n
\nconst unsigned char siebensegtable[] =
\n{
\n 0, \/\/ 20 Space
\n 0x30, \/\/ 21 !
\n 0x22, \/\/ 22 »
\n 0x7f, \/\/ 23 #
\n 0, \/\/ 24 $
\n 0, \/\/ 25 %
\n 0, \/\/ 26 &
\n 0x02, \/\/ 27 ‘
\n 0x39, \/\/ 28 (
\n 0x0f, \/\/ 29 )
\n 0, \/\/ 2A *
\n 0x7f, \/\/ 2B +
\n 0x04, \/\/ 2C ,
\n 0x40, \/\/ 2D –
\n 0x80, \/\/ 2E .
\n 0x30, \/\/ 2F \/
\n 0x3f, \/\/ 30 0
\n 0x06, \/\/ 31 1
\n 0x5b, \/\/ 32 2
\n 0x4f, \/\/ 33 3
\n 0x66, \/\/ 34 4
\n 0x6d, \/\/ 35 5
\n 0x7c, \/\/ 36 6
\n 0x07, \/\/ 37 7
\n 0x7f, \/\/ 38 8
\n 0x67, \/\/ 39 9
\n \/\/
\n 0, \/\/ 3A :
\n 0, \/\/ 3B ;
\n 0, \/\/ 3C <\n 0x48, \/\/ 3D =\n 0, \/\/ 3E >
\n 0, \/\/ 3F ?
\n 0x5c, \/\/ 40 @
\n 0x77, \/\/ 41 A
\n 0x7c, \/\/ 42 B
\n 0x39, \/\/ 43 C
\n 0x5e, \/\/ 44 D
\n 0x79, \/\/ 45 E
\n 0x71, \/\/ 46 F
\n 0x67, \/\/ 47 G
\n 0x76, \/\/ 48 H
\n 0x06, \/\/ 49 I
\n 0x86, \/\/ 4A J
\n 0x74, \/\/ 4B K
\n 0x38, \/\/ 4C L
\n 0x37, \/\/ 4D M
\n 0x54, \/\/ 4E N
\n 0x5c, \/\/ 4F O
\n 0x73, \/\/ 50 P
\n 0xbf, \/\/ 51 Q
\n 0x50, \/\/ 52 R
\n 0x6d, \/\/ 53 S
\n 0x70, \/\/ 54 T
\n 0x3e, \/\/ 55 U
\n 0x1c, \/\/ 56 V
\n 0x9c, \/\/ 57 W
\n 0x24, \/\/ 58 X
\n 0x36, \/\/ 59 Y
\n 0x5b, \/\/ 5A Z
\n 0x39, \/\/ 5B [
\n 0x30, \/\/ 5C
\n 0x0f, \/\/ 5D ]
\n 0x08, \/\/ 5E _
\n 0 \/\/ 5F
\n};<\/p>\n
\nunsigned int get_7seg(unsigned char asciicode)
\n{
\n \/\/ Umrechnen 0..255 auf
\n \/\/ 7seg
\n \/\/ Dabei nur Zahlen und Grossbuchstaben
\n \/\/ 20..5F
\n \/\/ rest wird gemappt
\n asciicode = asciicode & 0x7f; \/\/ 7 bit only
\n if (asciicode < 0x20) return (0);\n if (asciicode >= 0x60) asciicode = asciicode – 0x20;
\n return((~siebensegtable[asciicode-0x20])&0xff);
\n}<\/p>\n
\n{
\n Wire.beginTransmission(i2cbaseadr);
\n Wire.write(get_7seg(ch1));
\n Wire.endTransmission();
\n}<\/p>\n
\n{
\n Wire.beginTransmission(i2cbaseadr);
\n Wire.write(ch1);
\n Wire.endTransmission();
\n}<\/p>\n
\n#define SWITCHA 2
\n#define SWITCHB 3
\n#define SWITCHT 4
\n#define PULLUP 5<\/p>\n
\n Wire.begin();<\/p>\n
\n pinMode(SWITCHB,INPUT_PULLUP);
\n pinMode(SWITCHT,INPUT_PULLUP);<\/p>\n
\n char buffer[10];
\n \/\/
\n static int counter = 0;
\n static int oldcounter = -999;
\n int a= digitalRead(SWITCHA);
\n int b= digitalRead(SWITCHB);
\n int state = 0;
\n static int oldstate = 99;
\n int sw = digitalRead(SWITCHT);
\n if (sw == LOW) counter = 0; \/\/ RESET
\n if (a==HIGH) {
\n state = 1;
\n } else {
\n state = 0;
\n }
\n if (b==HIGH) {
\n state += 2;
\n } else {
\n state += 0;
\n }
\n switch(state) {
\n case 0:
\n if (oldstate == 1) {
\n counter–;
\n } else if (oldstate == 2) {
\n counter++;
\n }
\n break;
\n case 1:
\n if (oldstate == 0) {
\n counter++;
\n } else if (oldstate == 3) {
\n counter–;
\n }<\/p>\n
\n case 2:
\n if (oldstate == 3) {
\n counter++;
\n } else if (oldstate == 0) {
\n counter–;
\n }
\n break;
\n case 3:
\n if (oldstate == 2) {
\n counter–;
\n } else if (oldstate == 1) {
\n counter++;
\n }
\n break;
\n }
\n oldstate = state;
\n sprintf(buffer, »%04d »,counter);
\n \/\/ Counter ausgeben nur bei aenderung
\n if (oldcounter != counter) {
\n display_seg1x(i2cseg7x2bmsb1,buffer[0]); \/\/ msb zeichen\/ LINKE Anzeige
\n display_seg1x(i2cseg7x2blsb1,buffer[1]); \/\/ ..
\n display_seg1x(i2cseg7x2amsb1,buffer[2]);
\n display_seg1x(i2cseg7x2alsb1,buffer[3]); \/\/ lsb zeichen
\n oldcounter = counter;
\n }
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"