yichael_proadvanced/util/util-js/BLE_RGB.js

//随机获取7种颜色中的一种颜色,常亮显示
const getRandomRGB = () => {
	let index = Math.floor(Math.random() * 7);
	// console.log("index:" + index);
	let head = '5B0E02';
	let tail = '5D';

	for (let i = 0; i < 7; i++) {
		if (i == index) {
			head = head.concat('FF')
		} else {
			head = head.concat('00')
		}
		//时间设置为0，常亮
		head = head.concat('00');
	}
	head = head.concat(tail);
	// console.log(head);
	return head;
}


//随机获取7种颜色中的三种颜色,随机显示
const getRandomThreeRGB = () => {
	//原数组
	var arr = [0, 1, 2, 3, 4, 5, 6];
	//输出数组    
	var out = [];
	//输出个数    
	var num = 3;
	while (out.length < num) {
		var temp = (Math.random() * arr.length) >> 0;
		out.push(arr.splice(temp, 1));
	}

	// console.log("out:" + out);
	let head = '5B0E02';
	let tail = '5D';

	for (let i = 0; i < 7; i++) {
		let bHas = false;
		for (let j = 0; j < out.length; j++) {
			// console.log(i + '==' + out[j])
			if (i == out[j]) {
				bHas = true;
			}
			if (j == out.length - 1) {
				//需要灭灯的时间
				let addStr = bHas ? '08' : '00';
				head = head.concat(addStr);
				// console.log(addStr)
			}
		}
		//时间设置为0，常亮, 对应灭灯时间 20ms
		let timeStr = bHas ? '02' : '00';
		head = head.concat(timeStr);
	}
	head = head.concat(tail);
	// console.log(head);
	return head;
}

export default {
	getRandomRGB,
	getRandomThreeRGB
}