sony-ble/utils/buffer.js

 function buf2hex(buffer) { // buffer is an ArrayBuffer
                return [...new Uint8Array(buffer)]
                    .map(x => x.toString(16).padStart(2, '0'))
                    .join('');
              }

function hex2ab(hex){
  let typedArray = new Uint8Array(hex.match(/[\da-f]{2}/gi).map(function (h) {
    return parseInt(h, 16)
  }))
  let buffer = typedArray.buffer
  return buffer
}
function hexStrToBuffer(str){
  // 填充首位
  if(str.length % 2){str=`0${str}`}
  
  for(let i=0;i<str.length;i+=2){
    hex2ab
  }
}
module.exports = {buf2hex,hex2ab}