118 lines
3.0 KiB
TypeScript
118 lines
3.0 KiB
TypeScript
/**
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* Control of the LED screen.
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*/
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//% color=3 weight=35
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namespace led {
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/**
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* Displays a vertical bar graph based on the ``value`` and ``high`` value.
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* @param value current value to plot
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* @param high maximum value, eg: 1023, 255
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*/
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//% help=/led/plot-bar-graph weight=20
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//% blockId=device_plot_bar_graph block="plot bar graph of %value |up to %high" icon="\uf080" blockExternalInputs=true
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export function plotBarGraph(value: number, high: number): void {
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serial.writeString(value.toString() + "\r\n");
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let v = Math.abs((value * 15) / high);
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let k = 0;
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for(let y = 4; y >= 0; --y) {
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for (let x = 0; x < 3; ++x) {
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if (k > v) {
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unplot(2-x,y);
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unplot(2+x,y);
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} else {
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plot(2-x, y);
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plot(2+x, y);
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}
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++k;
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}
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}
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}
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/**
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* Toggles a particular pixel
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* @param x TODO
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* @param y TODO
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*/
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//% help=led/toggle
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export function toggle(x: number, y: number): void {
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if (led.point(x, y)) {
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led.unplot(x, y);
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} else {
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led.plot(x, y);
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}
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}
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/**
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* Turns all LEDS on
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*/
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//% help=led/plot-all
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export function plotAll(): void {
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for (let i = 0; i < 5; i++) {
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for (let j = 0; j < 5; j++) {
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led.plot(i, j);
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}
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}
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}
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/**
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* Inverts the current LED display
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*/
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//% help=led/toggle-all
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export function toggleAll(): void {
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for (let i = 0; i < 5; i++) {
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for (let j = 0; j < 5; j++) {
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led.toggle(i, j);
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}
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}
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}
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/**
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* Fades in the screen display.
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* @param ms TODO
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*/
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//% help=led/fade-in
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export function fadeIn(ms: number = 700): void {
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if (ms < 20) {
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led.setBrightness(255);
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return;
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}
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let dt = 50;
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let brightness = led.brightness();
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let start = input.runningTime();
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let elapsed = 0;
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while (elapsed < ms) {
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led.setBrightness(brightness + ((255 - brightness) * elapsed) / ms);
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basic.pause(dt);
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elapsed = input.runningTime() - start;
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}
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led.setBrightness(255);
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}
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/**
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* Fades out the screen brightness.
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* @param ms TODO
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*/
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//% help=led/fade-out
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export function fadeOut(ms: number = 700): void {
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if (ms < 20) {
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led.setBrightness(0);
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return;
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}
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let brightness = led.brightness();
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let dt = 50;
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let start = input.runningTime();
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let elapsed = 0;
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while (elapsed < ms) {
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led.setBrightness(brightness - (brightness * elapsed) / ms);
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basic.pause(dt);
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elapsed = input.runningTime() - start;
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}
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led.setBrightness(0);
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}
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}
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