129 lines
3.7 KiB
C++
129 lines
3.7 KiB
C++
#include "ksbit.h"
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/**
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* Provides access to basic micro:bit functionality.
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*/
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//% color=#0078D7 weight=100
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namespace basic {
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/**
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* Scroll a number on the screen. If the number fits on the screen (i.e. is a single digit), do not scroll.
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* @param interval speed of scroll; eg: 150, 100, 200, -100
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*/
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//% help=basic/show-number
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//% weight=96
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//% blockId=device_show_number block="show|number %number" blockGap=8 icon="\uf1ec"
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//% async
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void showNumber(int value, int interval = 150) {
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if (interval < 0)
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return;
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ManagedString t(value);
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if (value < 0 || value >= 10) {
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uBit.display.scroll(t, interval);
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} else {
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uBit.display.printChar(t.charAt(0), interval * 5);
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}
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}
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/**
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* Draws an image on the LED screen.
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* @param leds the pattern of LED to turn on/off
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* @param interval time in milliseconds to pause after drawing
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*/
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//% help=basic/show-leds
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//% weight=95 blockGap=8
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//% imageLiteral=1 async
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//% blockId=device_show_leds
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//% block="show leds" icon="\uf00a"
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void showLeds(ImageLiteral leds, int interval = 400) {
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uBit.display.print(MicroBitImage(imageBytes(leds)), 0, 0, 0, interval);
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}
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/**
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* Display text on the display, one character at a time. If the string fits on the screen (i.e. is one letter), does not scroll.
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* @param text the text to scroll on the screen, eg: "Hello!"
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* @param interval how fast to shift characters; eg: 150, 100, 200, -100
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*/
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//% help=basic/show-string
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//% weight=87 blockGap=8
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//% block="show|string %text" icon="\uf031"
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//% async
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//% blockId=device_print_message
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void showString(StringData *text, int interval = 150) {
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if (interval < 0)
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return;
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ManagedString s(text);
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int l = s.length();
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if (l == 0) {
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uBit.display.clear();
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fiber_sleep(interval * 5);
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} else if (l > 1) {
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uBit.display.scroll(s, interval);
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} else {
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uBit.display.print(s.charAt(0), interval * 5);
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}
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}
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/**
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* Turn off all LEDs
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*/
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//% help=basic/clear-screen weight=79
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//% blockId=device_clear_display block="clear screen" icon="\uf12d"
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void clearScreen() {
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uBit.display.image.clear();
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}
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/**
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* Shows a sequence of LED screens as an animation.
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* @param leds pattern of LEDs to turn on/off
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* @param interval time in milliseconds between each redraw
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*/
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//% help=basic/show-animation imageLiteral=1 async
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void showAnimation(ImageLiteral leds, int interval = 400) {
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uBit.display.animate(MicroBitImage(imageBytes(leds)), interval, 5, 0);
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}
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/**
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* Draws an image on the LED screen.
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* @param leds pattern of LEDs to turn on/off
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*/
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//% help=basic/plot-leds weight=80
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void plotLeds(ImageLiteral leds) {
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MicroBitImage i(imageBytes(leds));
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uBit.display.print(i, 0, 0, 0, 0);
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}
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void forever_stub(void *a) {
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while (true) {
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runAction0((Action)a);
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fiber_sleep(20);
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}
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}
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/**
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* Repeats the code forever in the background. On each iteration, allows other codes to run.
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* @param body code to execute
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*/
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//% help=basic/forever weight=55 blockGap=8
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//% blockId=device_forever block="forever" icon="\uf01e"
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void forever(Action a) {
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if (a != 0) {
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incr(a);
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create_fiber(forever_stub, (void*)a);
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}
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}
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/**
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* Pause for the specified time in milliseconds
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* @param ms how long to pause for, eg: 100, 200, 500, 1000, 2000
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*/
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//% help=basic/pause weight=54
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//% async block="pause (ms) %pause"
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//% blockId=device_pause icon="\uf110"
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void pause(int ms) {
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fiber_sleep(ms);
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}
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}
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