Daniel Wiese / Mbed 2 deprecated DD-Booster-waterdrop

Example of DDBooster library usage showing a falling water drop effect.

Dependencies:   DD-Booster-mbed mbed

main.cpp@1:f32320229240, 2017-03-06 (annotated)

Committer:
Gamadril
Date:
Mon Mar 06 14:09:13 2017 +0000
Revision:
1:f32320229240
Parent:
0:3a382b72adfb 
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Gamadril 0:3a382b72adfb 1 #include "DDBooster.h"
Gamadril 0:3a382b72adfb 2
Gamadril 0:3a382b72adfb 3 #define LEDS 20
Gamadril 0:3a382b72adfb 4
Gamadril 0:3a382b72adfb 5 int main()
Gamadril 0:3a382b72adfb 6 {
Gamadril 0:3a382b72adfb 7 // get the instance of DDBooster with configured SPI pins
Gamadril 0:3a382b72adfb 8 DDBooster booster(SPI_MOSI, SPI_SCK, SPI_CS);
Gamadril 0:3a382b72adfb 9
Gamadril 0:3a382b72adfb 10 // tell the number of LEDs used
Gamadril 0:3a382b72adfb 11 booster.init(LEDS);
Gamadril 0:3a382b72adfb 12
Gamadril 0:3a382b72adfb 13 // we start outside from -8 to 0. first led has always index 0
Gamadril 0:3a382b72adfb 14 // both values define the length of the drop
Gamadril 0:3a382b72adfb 15 int16_t start = -8, end = 0;
Gamadril 0:3a382b72adfb 16 // show a gradient from white to blue
Gamadril 0:3a382b72adfb 17 uint8_t startColor[] = {60, 60, 60};
Gamadril 0:3a382b72adfb 18 uint8_t endColor[] = {0, 0, 60};
Gamadril 0:3a382b72adfb 19
Gamadril 0:3a382b72adfb 20 while(1) {
Gamadril 0:3a382b72adfb 21 // turn all leds off
Gamadril 0:3a382b72adfb 22 booster.clearAll();
Gamadril 0:3a382b72adfb 23 // set gradient with current values
Gamadril 0:3a382b72adfb 24 booster.setGradient(start, end, startColor, endColor);
Gamadril 0:3a382b72adfb 25 // commit it
Gamadril 0:3a382b72adfb 26 booster.show();
Gamadril 0:3a382b72adfb 27
Gamadril 0:3a382b72adfb 28 // when the start index runs out of visible area (last led has index led_count - 1)
Gamadril 0:3a382b72adfb 29 // start from the beginning, otherwise increment the start and end postitions
Gamadril 0:3a382b72adfb 30 if (start == LEDS) {
Gamadril 0:3a382b72adfb 31 start = -8;
Gamadril 0:3a382b72adfb 32 end = 0;
Gamadril 0:3a382b72adfb 33 // delay between the drops
Gamadril 0:3a382b72adfb 34 wait_ms(1000);
Gamadril 0:3a382b72adfb 35 } else {
Gamadril 0:3a382b72adfb 36 start++;
Gamadril 0:3a382b72adfb 37 end++;
Gamadril 0:3a382b72adfb 38 }
Gamadril 0:3a382b72adfb 39
Gamadril 0:3a382b72adfb 40 // changing the value makes the drop fall faster or slower
Gamadril 0:3a382b72adfb 41 wait_ms(20);
Gamadril 0:3a382b72adfb 42 }
Gamadril 0:3a382b72adfb 43 }