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21937| 21
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[求助问答] 求助：图形化模式485通信 |
本帖最后由 jF2YGR2H 于 2020-11-20 07:56 编辑 Forgotten 发表于 2020-11-19 14:32 发送成功了，接收串口的指令出了问题，不能一次性完全显示出来，需要加很多询问  然而，实际数据要这么多位....[2020-11-20 07:53:24.649]# RECV HEX> 01 03 00 14 00 0A 85 C9 01 03 14 00 F9 00 1D 00 1D 09 63 09 66 09 5F 08 33 09 5A 09 5C 00 00 CE 2C 然而我需要获取的数据，要达到12种，200多个串口发送+200多个串口打印，才能完成这些操作 我贴一个用于获取电压的循环 const u16 CRCtbl[256] = { 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, 0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641, 0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, 0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, 0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, 0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, 0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, 0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, 0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, 0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, 0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, 0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, 0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, 0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, 0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, 0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, 0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, 0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, 0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, 0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 }; static u16 MODBUS_CalCRC(const u8 buff[], const u8 len) { u8 i; u16 crcval = 0xffff; u16 temp = 0; for(i=0;i<len;i++) { temp = (crcval>>8)^CRCtbl[(crcval&0xFF)^buff]; crcval = temp; } return crcval; } int get_SysVol(){ unsigned char sendBuff[8]={0x01,0x03,0x00,0x0C,0x00,0x02,0x04,0x08}; unsigned char receiveBuff[7]={0}; unsigned char checkBuff[2]={0}; for(int i=0;i<8;i++){ Serial1.write(sendBuff); //delayMicroseconds(2); } while(Serial1.available()<0){ delayMicroseconds(2); } int count=0; while(Serial1.available()>0){ receiveBuff[count]=Serial1.read(); if(count==6){ checkBuff[0]=Serial1.read(); checkBuff[1]=Serial1.read(); break; } count++; } int checkCRC = MODBUS_CalCRC(receiveBuff,7); int receivedCheck = int(checkBuff[0])+(int(checkBuff[1]))*256; if(checkCRC==receivedCheck){ return (int(receiveBuff[3])*256+int(receiveBuff[4]))+(int(receiveBuff[5])*256+int(receiveBuff[6]))*256; } else{ return -1; } } //unsigned char buffCheck[23] = { 0x01 ,0x03 ,0x14, 0x00 ,0x7D ,0x07 ,0xD0 ,0x07 ,0xD0 ,0x0C ,0xDA ,0x0C ,0xE0 ,0x0C ,0xDF ,0x0C ,0xDF ,0x0C ,0xDC ,0x0C ,0xDE ,0x0C ,0xDD}; unsigned char buffCheck[6] = {0x01,0x03,0x00,0x0C,0x00,0x02}; void setup() { // put your setup code here, to run once: Serial.begin(9600); Serial1.begin(9600); int get1=MODBUS_CalCRC(buffCheck,6); Serial.println(get1,HEX); } void loop() { // put your main code here, to run repeatedly: int sysVolt = get_SysVol(); //获取系统电压 Serial.print("sysVolt: "); Serial.println(sysVolt); delay(5000); } |
Forgotten 发表于 2020-11-19 14:32 如果您有时间，在指导一二，我遇到的问题是，头文件加进去了，编译失败，但是在ARDUINO IDE中，是顺利的，实在弄不明白为什么了  C:\Program Files (x86)\Mind+\Arduino\arduino-builder -preprocess -logger=machine -hardware C:\Program Files (x86)\Mind+\Arduino\hardware -tools C:\Program Files (x86)\Mind+\Arduino\tools-builder -tools C:\Program Files (x86)\Mind+\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Mind+\Arduino\libraries -fqbn=arduino:avr:leonardo -vid-pid=0X2341_0X0043 -ide-version=10804 -build-path C:\Users\观察者\AppData\Local\DFScratch\build -warnings=none -build-cache C:\Users\观察者\AppData\Local\DFScratch\cache -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Mind+\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Mind+\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Mind+\Arduino\hardware\tools\avr -verbose C:\Users\观察者\AppData\Local\DFScratch\dfrobot\dfrobot.ino C:\Users\观察者\AppData\Local\DFScratch\dfrobot\dfrobot.ino:1:10: fatal error: read_YYBMS: No such file or directory compilation terminated. exit status 1 |
jF2YGR2H 发表于 2020-11-23 07:44 外部的扩展模块要通过用户库导入，不能直接引用 https://mindplus.dfrobot.com.cn/ext-arduino |
Forgotten 发表于 2020-11-19 12:05 感谢指导，搞定了，我把我改的文件发上来，谁有用可以参考一下   DFRobot-SHT20.zip我以前没接触过这类东西，摸索这改 1、模板没有大调整，只是可以运行 2、改里面的文件，不是记事本编辑就可以，我找了个网站，上传---修改---下载----替换，需要这个过程（http://www.html580.com/10790/demo） |
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果然mind+版主就是厉害
