53 lines
1.4 KiB
TypeScript
53 lines
1.4 KiB
TypeScript
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/// <reference no-default-lib="true"/>
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/**
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* Reading and writing data to the console output.
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*/
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//% weight=12 color=#002050 icon="\uf120"
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//% advanced=true
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namespace console {
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type Listener = (text: string) => void;
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//% whenUsed
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let listeners: Listener[] = undefined;
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/**
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* Write a line of text to the console output.
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* @param value to send
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*/
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//% weight=90
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//% help=console/log blockGap=8
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//% text.shadowOptions.toString=true
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export function log(text: string): void {
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// pad text on the 32byte boundar
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text += "\r\n";
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control.__log(text);
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// send to listeners
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if (listeners)
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for (let i = 0; i < listeners.length; ++i)
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listeners[i](text);
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}
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/**
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* Write a name:value pair as a line of text to the console output.
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* @param name name of the value stream, eg: "x"
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* @param value to write
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*/
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//% weight=88 blockGap=8
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//% help=console/log-value
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export function logValue(name: string, value: number): void {
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log(name ? `${name}: ${value}` : `${value}`)
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}
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/**
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* Adds a listener for the log messages
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* @param listener
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*/
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//%
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export function addListener(listener: (text: string) => void) {
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if (!listener) return;
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if (!listeners)
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listeners = [];
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listeners.push(listener);
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}
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}
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