低功耗蓝牙接收数据超过20分开发送

uni.onBLECharacteristicValueChange(function(CALLBACK) {
let result = blueTool.bufferString(CALLBACK.value);
console.log(result "长度：" result.length);
});
打印日志
19:11:01.125 >T300ED89F3350004000长度：20 at common/rfid.js:122
19:11:01.145 C26DBC>T300ED89F33长度：19 at common/rfid.js:122
19:11:01.155 50004000C26D32>T30长度：19 at common/rfid.js:122
19:11:01.165 35307B2831B38210C35D长度：20 at common/rfid.js:122

有什么办法解决分开发送吗