Eray Ozturk / Mbed 2 deprecated QuadBrightness

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Dependencies:   mbed

main.cpp@2:d955fe04abd9, 2010-10-22 (annotated)

Committer:
diffstorm
Date:
Fri Oct 22 12:23:34 2010 +0000
Revision:
2:d955fe04abd9
Parent:
1:8012a60a982d 
added percentage view

Who changed what in which revision?

UserRevisionLine numberNew contents of line
diffstorm 1:8012a60a982d 1 /*
diffstorm 1:8012a60a982d 2 A featured example for beginners
diffstorm 1:8012a60a982d 3
diffstorm 1:8012a60a982d 4 Control brightnesses of all 4 LEDs on the board using +/- keys for increment or decrement, 1/2/3/4 keys to select LED through your computer
diffstorm 1:8012a60a982d 5
diffstorm 1:8012a60a982d 6 Eray Ozturk | erayozturk1@gmail.com
diffstorm 1:8012a60a982d 7 */
diffstorm 1:8012a60a982d 8
diffstorm 0:655158a7c194 9 #include "mbed.h"
diffstorm 0:655158a7c194 10
diffstorm 1:8012a60a982d 11 // The mbed board can communicate with a host PC through a "USB Virtual Serial Port" over the same USB cable that is used for programming.
diffstorm 1:8012a60a982d 12 // If you use Windows, you need a driver. http://mbed.org/media/downloads/drivers/mbedWinSerial_16466.exe
diffstorm 1:8012a60a982d 13 // With your mbed plugged in, and no explorer drive windows open, run the installer.
diffstorm 1:8012a60a982d 14 // The default baud rate is 9600
diffstorm 0:655158a7c194 15 Serial pc(USBTX, USBRX); // tx, rx
diffstorm 0:655158a7c194 16
diffstorm 0:655158a7c194 17 Ticker flipper;
diffstorm 0:655158a7c194 18 PwmOut led1(LED1);
diffstorm 0:655158a7c194 19 PwmOut led2(LED2);
diffstorm 0:655158a7c194 20 PwmOut led3(LED3);
diffstorm 0:655158a7c194 21 PwmOut led4(LED4);
diffstorm 0:655158a7c194 22
diffstorm 2:d955fe04abd9 23 #define PWM_MAX 0.5
diffstorm 2:d955fe04abd9 24
diffstorm 0:655158a7c194 25 float brightness = 0.0;
diffstorm 0:655158a7c194 26 float brigh_bckp;
diffstorm 0:655158a7c194 27
diffstorm 0:655158a7c194 28 int SelectedLED = 1;
diffstorm 0:655158a7c194 29 int Selec_bckp;
diffstorm 0:655158a7c194 30
diffstorm 1:8012a60a982d 31 void callback() {
diffstorm 2:d955fe04abd9 32 if (brightness>PWM_MAX) // limiter
diffstorm 2:d955fe04abd9 33 brightness = PWM_MAX;
diffstorm 2:d955fe04abd9 34
diffstorm 2:d955fe04abd9 35 if (brightness<0.0) // limiter
diffstorm 2:d955fe04abd9 36 brightness = 0.0;
diffstorm 2:d955fe04abd9 37
diffstorm 0:655158a7c194 38 if (Selec_bckp!=SelectedLED || brigh_bckp!=brightness) {
diffstorm 2:d955fe04abd9 39 pc.printf("*Led%u : %5.1f%%\n",SelectedLED,brightness*100.0/PWM_MAX);
diffstorm 0:655158a7c194 40 Selec_bckp = SelectedLED;
diffstorm 0:655158a7c194 41 brigh_bckp = brightness;
diffstorm 0:655158a7c194 42 }
diffstorm 0:655158a7c194 43 }
diffstorm 0:655158a7c194 44
diffstorm 0:655158a7c194 45 void SetBright() {
diffstorm 0:655158a7c194 46 switch (SelectedLED) {
diffstorm 0:655158a7c194 47 case 1:
diffstorm 0:655158a7c194 48 led1 = brightness;
diffstorm 0:655158a7c194 49 break;
diffstorm 0:655158a7c194 50 case 2:
diffstorm 0:655158a7c194 51 led2 = brightness;
diffstorm 0:655158a7c194 52 break;
diffstorm 0:655158a7c194 53 case 3:
diffstorm 0:655158a7c194 54 led3 = brightness;
diffstorm 0:655158a7c194 55 break;
diffstorm 0:655158a7c194 56 case 4:
diffstorm 0:655158a7c194 57 led4 = brightness;
diffstorm 0:655158a7c194 58 break;
diffstorm 0:655158a7c194 59 default:
diffstorm 0:655158a7c194 60 SelectedLED = 1;
diffstorm 0:655158a7c194 61 }
diffstorm 0:655158a7c194 62 }
diffstorm 0:655158a7c194 63
diffstorm 0:655158a7c194 64 int main() {
diffstorm 1:8012a60a982d 65 pc.printf("\n## Quad Brightness Controller ##\n");
diffstorm 0:655158a7c194 66 pc.printf("Press '+/-' to change selected LED's brightness\n");
diffstorm 0:655158a7c194 67 pc.printf("Use '1'-'4' keys to change selected LED\n");
diffstorm 0:655158a7c194 68
diffstorm 1:8012a60a982d 69 flipper.attach(&callback, 1.0); // call flip() in every 1 sec
diffstorm 0:655158a7c194 70
diffstorm 0:655158a7c194 71 while (true) {
diffstorm 0:655158a7c194 72 if (pc.readable()) {
diffstorm 0:655158a7c194 73 char c = pc.getc();
diffstorm 2:d955fe04abd9 74
diffstorm 2:d955fe04abd9 75 if ((c == '+') && (brightness < PWM_MAX)) {
diffstorm 0:655158a7c194 76 brightness += 0.01;
diffstorm 0:655158a7c194 77 SetBright();
diffstorm 2:d955fe04abd9 78 } else if ((c == '-') && (brightness > 0.0)) {
diffstorm 0:655158a7c194 79 brightness -= 0.01;
diffstorm 0:655158a7c194 80 SetBright();
diffstorm 2:d955fe04abd9 81 } else if (c == '1') {
diffstorm 0:655158a7c194 82 pc.printf("Led1 selected\n");
diffstorm 0:655158a7c194 83 SelectedLED = 1;
diffstorm 0:655158a7c194 84 brightness = 0.0;
diffstorm 2:d955fe04abd9 85 } else if (c == '2') {
diffstorm 0:655158a7c194 86 pc.printf("Led2 selected\n");
diffstorm 0:655158a7c194 87 SelectedLED = 2;
diffstorm 0:655158a7c194 88 brightness = 0.0;
diffstorm 2:d955fe04abd9 89 } else if (c == '3') {
diffstorm 0:655158a7c194 90 pc.printf("Led3 selected\n");
diffstorm 0:655158a7c194 91 SelectedLED = 3;
diffstorm 0:655158a7c194 92 brightness = 0.0;
diffstorm 2:d955fe04abd9 93 } else if (c == '4') {
diffstorm 0:655158a7c194 94 pc.printf("Led4 selected\n");
diffstorm 0:655158a7c194 95 SelectedLED = 4;
diffstorm 0:655158a7c194 96 brightness = 0.0;
diffstorm 2:d955fe04abd9 97 } else if (c == 'a') {
diffstorm 2:d955fe04abd9 98 pc.printf("Author: Eray Ozturk\n");
diffstorm 0:655158a7c194 99 }
diffstorm 0:655158a7c194 100 }
diffstorm 0:655158a7c194 101 }
diffstorm 0:655158a7c194 102 }