qq_39313162的博客

function crc16modbus(msg) local crctab, res, tmp crctab = { 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0..

function hexToFloat( hexString )local tmpNum = tobinary32(tonumber(hexString,16))local sign = string.sub(tmpNum,1,1)sign = tonumber(sign)local exponent = string.sub(tmpNum,2,9)exponent = tonumber(exponent,2) - 127local mantissa = string.sub(tmpNum,1.

1.总结：注意接收数据的处理才是最麻烦的，最麻烦的，留此记性，下次注意！！（16进制转16进制字符串需要特殊处理，跟我以前用c#处理方式完全不同，也可能是因为接触c语言不多，知识狭隘）！代码可以在精简（留在下次），此处只有server端信息接收处理server#include <sys/stat.h> #include <fcntl.h> #include...

一.解析JSON 字符串var obj = jQuery.parseJSON('{"id":"1234"}'); alert( obj.id=== "1234" );--输出truevar tbList = jQuery.parseJSON(objc);--多数据处理tbList.rows[i].GoodsNO二.json.encode与json.decode的用法js...

require('encdec')password='clientIdlightdeviceNamelightproductKeya1xj1mAHz0L'key = 'eCyjrzg3EYK4tZlWnLwNj1U3AyqctltR'-- encdec.md5(password) -- get only hash md5--pw = encdec.sha1(pass...

注意：若是接收数据为空时，有可能数据是16进制，需要转换service：port = 9999 host = '*'device_mac = string.upper('fa14576B6247')-- upperm1 = string.sub(device_mac,1,2)m2 = string.sub(device_mac,3,4)m3 = string.sub(devic...

完整实例（个人测试版，subscribe-订阅可忽略）require('json')require('encdec')mqtt = require('mosquitto')num = math.random(0,1)log(num)data = json.encode({params = { LightStatus = num, --humidity=19}...

// Closing current script section to add elements// Closing current script section to add elements</script><audio id="LM_Audio" style="display: none;"></audio> <script ty...