electron ffi 读卡，写卡

前提：electron ffi环境以及搭建好及文件加载成功

const refArray = require('ref-array')
  //buffer数组  如:tc_load_key_hex  验证密码
 function buff(val,nub){    //val 十进制密码 nub 位数 512
        if(!refArray) return;
        let IntArray = refArray(ref.types.char,nub);
        let writeV = new IntArray();
        let bufferValue = Buffer.from((val+''))
        for(let i=0;i<bufferValue.length;i++){
            writeV[i]=bufferValue[i];
        }
        let strArray = [...bufferValue];
        let pCall = ref.alloc(IntArray,strArray);
        return pCall
    }
//16进制buffer  如: tc_load_key
  Buffer.from(val,'hex')