33 lines
1.2 KiB
JavaScript
33 lines
1.2 KiB
JavaScript
const BUZZ_WEAK = 0.25;
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const BUZZ_STRONG = 1;
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const SHORT_MS = 100;
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const LONG_MS = 500;
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/**
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* Buzz the passed `pattern` out on the internal vibration motor.
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*
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* A pattern is a sequence of `.`, `:`, `-` and `=` where
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* - `:` is one short and strong vibration
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* - `.` is one short and weak vibration
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* - `=` is one long and strong vibration
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* - `-` is one long and weak vibration
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*
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* You can use the `buzz_menu` module to display a menu where some common patterns can be chosen.
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*
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* @param {string} pattern A string like `.-.`, `..=`, `:.:`, `..`, etc.
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* @returns a Promise
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*/
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exports.pattern = pattern => new Promise(resolve => {
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function doBuzz() {
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if (pattern == "") resolve();
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var c = pattern[0];
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pattern = pattern.substr(1);
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if (c == ".") Bangle.buzz(SHORT_MS, BUZZ_WEAK).then(() => setTimeout(doBuzz, 100));
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else if (c == "-") Bangle.buzz(LONG_MS, BUZZ_WEAK).then(() => setTimeout(doBuzz, 100));
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else if (c == ":") Bangle.buzz(SHORT_MS, BUZZ_STRONG).then(() => setTimeout(doBuzz, 100));
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else if (c == "=") Bangle.buzz(LONG_MS, BUZZ_STRONG).then(() => setTimeout(doBuzz, 100));
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else setTimeout(doBuzz, 100);
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}
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doBuzz();
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});
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