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This commit is contained in:
Chenwenxuan
189
device/SerialPort/SerialPort.cpp
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189
device/SerialPort/SerialPort.cpp
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#include "SerialPort.h"
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#include <assert.h>
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#define RETURN_ACK 0xac
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Comm::Comm()
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{
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m_hComm = nullptr;
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InitializeCriticalSection(&mCsRead);
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}
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Comm::~Comm()
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{
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if (m_hComm != nullptr)
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{
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CloseComm();
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}
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m_hComm = nullptr;
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}
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int Comm::getSerialSet(QString DevName)
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{
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QSettings *settings;//申明一个QSetting类函数
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settings = new QSettings ("SerialDevSet.ini", QSettings::IniFormat);//构建函数
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QString strKey;
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strKey = "/"+DevName+"/com";
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com = settings->value(strKey).toString();
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if (com.length() > 4)
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{
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com = "\\\\.\\" + com ;
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}
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strKey = "/"+DevName+"/baud";
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nBaudRate = settings->value(strKey).toInt();
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strKey = "/"+DevName+"/nParity";
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nParity = settings->value(strKey).toInt();
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strKey = "/"+DevName+"/nByteSize";
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nByteSize = settings->value(strKey).toInt();
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strKey = "/"+DevName+"/nStopBits";
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nStopBits = settings->value(strKey).toInt();
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if (nStopBits == 1)
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nStopBits = 0;
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strKey = "/"+DevName+"/pidP";
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pidP = settings->value(strKey).toFloat();
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strKey = "/"+DevName+"/dstPower";
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dstPower = settings->value(strKey).toFloat();
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return 0;
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}
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/*
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nParity: 0-4=None,Odd,Even,Mark,Space 校验位
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nByteSize: Number of bits/byte, 4-8 数据位
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nStopBits: 0,1,2 = 1, 1.5, 2 停止位
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*/
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bool Comm::OpenComm()
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{
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if (m_hComm != nullptr)
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return true;
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DCB dcb; // 串口控制块
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COMMTIMEOUTS timeouts = { // 串口超时控制参数
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100, // 读字符间隔超时时间: 100 ms
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10, // 读操作时每字符的时间: 1 ms (n个字符总共为n ms)
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500, // 基本的(额外的)读超时时间: 500 ms
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10, // 写操作时每字符的时间: 1 ms (n个字符总共为n ms)
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100 }; // 基本的(额外的)写超时时间: 100 ms
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m_hComm = CreateFile(reinterpret_cast<const wchar_t *>(com.utf16()), // 串口名称或设备路径
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GENERIC_READ | GENERIC_WRITE, // 读写方式
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0, // 共享方式：独占
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nullptr, // 默认的安全描述符
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OPEN_EXISTING, // 创建方式
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0, // 不需设置文件属性
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nullptr); // 不需参照模板文件
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if (m_hComm == INVALID_HANDLE_VALUE)
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{
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//printf("open error\n");
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m_hComm = nullptr;
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return FALSE; // 打开串口失败 这里要发送失败消息
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}
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if (!SetCommTimeouts(m_hComm, &timeouts)) // 设置超时
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{
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//printf("SetCommTimeouts error\n");
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CloseComm();
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return false;
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}
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if (!GetCommState(m_hComm, &dcb)) // 取DCB
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{
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//printf("GetCommState error\n");
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CloseComm();
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return false;
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}
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dcb.BaudRate = static_cast<unsigned long>(nBaudRate);
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dcb.ByteSize = static_cast<unsigned char>(nByteSize);
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dcb.Parity = static_cast<unsigned char>(nParity);
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dcb.StopBits = static_cast<unsigned char>(nStopBits);
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if (!SetCommState(m_hComm, &dcb)) // 设置DCB
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{
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//printf("SetCommState error\n");
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CloseComm();
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return false;
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}
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if (!SetupComm(m_hComm, 4096, 2048)) // 设置输入输出缓冲区大小
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{
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//printf("SetupComm error\n");
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CloseComm();
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return false;
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}
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PurgeComm(m_hComm, PURGE_TXABORT | PURGE_RXABORT |
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PURGE_TXCLEAR | PURGE_RXCLEAR);
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return TRUE;//这里发送成功消息
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}
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// 关闭串口
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bool Comm::CloseComm()
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{
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bool ret = true;
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if (m_hComm != nullptr)
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ret = CloseHandle(m_hComm);
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m_hComm = nullptr;
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return ret;
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}
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int Comm::SendCmd(char *data, unsigned short data_len ,unsigned char * revData, int * revData_len)
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{
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DWORD dwNumWrite; // 串口发出的数据长度
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DWORD dwNumRead; // 串口收到的数据长度
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unsigned char rev_buf[4096];
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DWORD RevDataLen = 0;
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DWORD dwError = 0;
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COMSTAT ComStat;
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int count = 0;
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if (data == nullptr)
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{
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return -1;
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}
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dwNumRead = 0;
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memset(rev_buf, 0, sizeof(rev_buf));
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PurgeComm(m_hComm, PURGE_TXABORT | PURGE_RXABORT |
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PURGE_TXCLEAR | PURGE_RXCLEAR);
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if (!WriteFile(m_hComm, data, static_cast<unsigned long>(data_len), &dwNumWrite, nullptr))
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{
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return -1;
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}
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// if (strcmp("mon\r", data) != 0)
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// {
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// return 0;
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// }
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while (TRUE)
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{
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Sleep(100);
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ClearCommError(m_hComm, &dwError, &ComStat);
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if ((ComStat.cbInQue >= 1))
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{
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if (!::ReadFile(m_hComm, rev_buf, ComStat.cbInQue, &RevDataLen, nullptr))
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{
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return -3;
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}
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else
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{
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*revData_len = static_cast<int>(RevDataLen);
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memcpy_s(revData,RevDataLen,rev_buf,RevDataLen);
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break;
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}
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}
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count++;
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if (count >= 20)
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return -1;
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}
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return 0;
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}
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