android-uniapp/utils/common

十六进制/ArrayBuffer/ASCII/modbus/crc/高低位,常用于串口、蓝牙、socket、UDP等字节数据转换

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byte字节工具类

import * as ByteUtils from '@/uni_modules/wrs-js-modbusCRCHex/js_sdk/wrs-ByteUtils.js';

• 整型转字节

  
  				let intValue = 500;
  				let byteValue = ByteUtils.intToByte(intValue);
  
  

• 字节转整型

  
  				let byteValue = 100;
  				let intValue = ByteUtils.byteToInt(byteValue);
  
  

hex十六进制工具类

import * as HexUtils from '@/uni_modules/wrs-js-modbusCRCHex/js_sdk/wrs-HexUtils.js';

• 十进制数组转十六进制字符串

  
  				let intArray = [];
  				intArray.push(0x01);
  				intArray.push(355);
  				let hex = HexUtils.intArrayToHex(intArray);
  
  

• 字节数组转十六进制字符串

  
  				let byteArray = [];
  				byteArray.push(0x01);
  				byteArray.push(35);
  				let hex = HexUtils.byteArrayToHex(byteArray);
  
  

• 十六进制字符串转整型数组

  
  	let hex = "030610aabb"
  				let intArray = HexUtils.hexToIntArray(hex);
  
  

• 十六进制字符串转字节数组

  
  				let hex = "ffbb02"
  				let byteArray = HexUtils.hexToByteArray(hex);
  
  

• 十六进制字符串转arrayBuffer

  
  				let hex = "ffbb02"
  				let arrayBuffer = HexUtils.hexToArrayBuffer(hex);
  
  

• arrayBuffer转十六进制字符串

  
  				let byteArrayBuffer = new Uint8Array([0x05, 0x02, 0xff]);
  				let arrayBuffer = byteArrayBuffer.buffer;
  				let hex = HexUtils.arrayBufferToHex(arrayBuffer);
  
  

• 十六进制字符串转Uint8Array

  
  				let hex = "030610aabb"
  				let uint8Array = HexUtils.hexToUint8Array(hex);
  				let msg = "hexToUint8Array\n" + "hex:" + hex + "\nintArray:" + uint8Array;
  				this.showMsg(msg);
  
  

• Uint8Array转十六进制字符串

  
  				var uint8 = new Uint8Array(4);
  				uint8[0] = 0x1f;
  				uint8[1] = 0x2f;
  				uint8[2] = 0x3f;
  				uint8[3] = 0x4f;
  				let hex = HexUtils.uint8ArrayToHex(uint8);
  				let msg = "uint8ArrayToHex:" + uint8 + " uint8ArrayToHex hex:" + hex;
  				this.showMsg(msg);
  
  

CRC校验工具类

import * as CRCUtils from '@/uni_modules/wrs-js-modbusCRCHex/js_sdk/wrs-CRCUtils.js';

• 获取CRC16_MODBUS

  
  				let hex = "05060A";
  				let data = HexUtils.hexToByteArray(hex);
  				var crc = CRCUtils.getCRC16_MODBUS(data);
  				// CRC十六进制
  				var crcHex = IntUtils.intToHex(crc)
  				var obj = CRCUtils.intToHighLow(crc);
  				// CRC低位
  				let low = obj.low;
  				// CRC高位
  				let high = obj.high
  
  

• 获取CRC16_CCITT_FALSE

  
  			let hex = "05060A";	
  			let data = HexUtils.hexToByteArray(hex);
  			var crc = CRCUtils.getCRC16_CCITT_FALSE(data);
  			// CRC十六进制
  			var crcHex = IntUtils.intToHex(crc)
  			var obj = CRCUtils.intToHighLow(crc);
  			// CRC低位
  			let low = obj.low;
  			// CRC高位
  			let high = obj.high
  
  

• 获取CRC32

  
  				let data = [0x05, 0x06, 0x0a];
  				let initialCrc = 0xFFFFFFFF;
  				let polynom = 0x04C11DB7;
  				let xor = 0xFFFFFFFF;
  				let refIn = true;
  				let refOut = true;
  				var crc = CRCUtils.getCRC32(data);
  				this.showMsg("CRC32:" + crc)
  
  
  

modubs工具类

import * as ModbusUtils from '@/uni_modules/wrs-js-modbusCRCHex/js_sdk/wrs-ModbusUtils.js';

• 写指令

  
  				// 设备地址
  				let address = 0x25;
  				// 寄存器起始地址
  				let start = 20;
  				// 寄存器个数
  				let count = 3;
  				let byteArray = ModbusUtils.getReadModbus(address, start, count);
  				let hex = HexUtils.byteArrayToHex(byteArray);
  				
  				// 如果CRC高位在前
  				let crcLowFront = false; // CRC是否低位在前
  				let byteArray1 = ModbusUtils.getReadModbusCRCLowFront(address, start, count, crcLowFront);
  				let hex1 = HexUtils.byteArrayToHex(byteArray1);
  
  

• 读指令

  
  				// 设备地址
  				let address = 0x25;
  				// 寄存器起始地址
  				let start = 20;
  				// 数据
  				let data = [];
  				data.push(0x02);
  				data.push(0x0A);
  				let byteArray = ModbusUtils.getWriteModbus(address, start, data);
  				let hex = HexUtils.byteArrayToHex(byteArray);
  
  				// 如果CRC高位在前
  				let crcLowFront = false; // CRC是否低位在前
  				let byteArray1 = ModbusUtils.getWriteModbusCRCLowFront(address, start, data, crcLowFront);
  				let hex1 = HexUtils.byteArrayToHex(byteArray1);
  
  

ASCII工具类

import * as ASCIIUtils from '@/uni_modules/wrs-js-modbusCRCHex/js_sdk/wrs-ASCIIUtils.js';

• 字符串转ASCII

  
  				let str = "Get_ID占三";
  				// byteArray为字节数组
  				let byteArray = ASCIIUtils.encodeUtf8(str);
  				// hex为十六进制字符串
  				let hex = HexUtils.byteArrayToHex(byteArray);
  
  

• ASCII转字符串

  
  let hex = "4765745f4944e58da0e4b889"
  let decodeStr = ASCIIUtils.decodeUtf8(hex);
  
  

整型工具类

import * as IntUtils from '@/uni_modules/wrs-js-modbusCRCHex/js_sdk/wrs-IntUtils.js';

• 高低位转整型

  
  				// 低位
  				let low = 226;
  				// 高位
  				let high = 102;
  				// 26338
  				let value = IntUtils.highLowToInt({
  					low: low,
  					high: high
  				})
  				
  

• 整型转高低位

  
  				// 整型
  				let value = 26338;
  				// 26338
  				let obj = IntUtils.intToHighLow(value)
  				// 低位
  				let low = obj.low;
  				// 高位
  				let high = obj.high;
  
  

• 大端序-字节数组转整型

  
  var byteArray = [0x01, 0x02, 0x03, 0x04]
  var intValue = IntUtils.bigEndianToInt(byteArray)
  
  

• 大端序 int转字节数组

  
  	var intValue = 2461;
  	var byteArray = IntUtils.bigEndianToByteArray(intValue)
  
  

• 小端序-字节数组转整型

  
  			var byteArray = [0x01, 0x02, 0x03, 0x04]
  			var intValue = IntUtils.littleEndianToInt(byteArray)
  
  

• 小端序-整型转字节数组

  
  var intValue = 2461;
  var byteArray = IntUtils.littleEndianToByteArray(intValue)
  				
  
  

• 十进制转二进制

  
  			var intValue = 20;
  			var bitStr = IntUtils.intToBit(intValue);
  
  

• 二进制转十进制

  
  				var bit = "00001001";
  				var intValue = IntUtils.bitToInt(bit);