單片機APP的項目目前完成的差不多了,主要是藍牙軟件與硬件對接比較費時費力
也總結出來了不少經驗,補齊了很多不足的知識點,也瞭解了很多方法,簡單做個總結出來
二進制arrayBuffer轉爲16進制,並且以字符串形式展現
// ArrayBuffer轉16進制的字符串示例 ab2hex(buffer) { let hexArr = Array.prototype.map.call( new Uint8Array(buffer), function (bit) { return ("00" + bit.toString(16)).slice(-2); } ); return hexArr.join(""); },
字符串轉爲二進制arraybuffer格式
// 字符串轉arrayBuffer string2buffer(hex_str) { let that = this; console.log("hex_str", hex_str); let typedArray = new Uint8Array( hex_str.match(/[\da-f]{2}/gi).map(function (h) { return parseInt(h, 16); }) ); return typedArray.buffer; },
16進制轉字符串格式
// 16進制轉爲字符串 hextoString(hex) { var arr = hex.split(""); var out = ""; for (var i = 0; i < arr.length / 2; i++) { var tmp = "0x" + arr[i * 2] + arr[i * 2 + 1]; var charValue = String.fromCharCode(tmp); out += charValue; } return out; },