C++ ComHelper

C++ Links >https://keenjin.github.io/2020/04/DXRender/ > >https://github.com/lili2012/Introduction-to-3D-Game-Programming-with-DirectX-11 > >http://www.d3dcoder.net/d3d11.html > >https://docs.microsoft.com/zh-cn/windows/win32/direct3ddxgi/dxgi-1-3-improvements?redirectedfrom=MSDN > >https://blog.csdn.net/Quellaaa/article/details/80328694 > >https://blog.csdn.net/baidu_28029719/article/details/108993377 > >https://blog.csdn.net/qq_17351161/article/details/89607458 > >https://www.cnblogs.com/zhangbaochong/category/780451.html?page=2 ~~~C++ #pragma once #include #include #include typedef unsigned char byte; using namespace std; typedef struct { HANDLE hCom; uint32_t baudrate; uint32_t bytesize; char parity; uint32_t stopbit; }rs232_device; class ComeHelper { public: static void init(); static void send(); static void dispose(); }; ~~~ ~~~C++ #include "Comer.h" int set_opt(HANDLE hFile, int nSpeed, int nBits, char nEvent, int nStop) { DCB dcb; COMMTIMEOUTS timeouts; //set input buf and output buf SetupComm(hFile, 512, 512); //set read timeout timeouts.ReadIntervalTimeout = 0; timeouts.ReadTotalTimeoutMultiplier = 0; timeouts.ReadTotalTimeoutConstant = 0; //set write timeout timeouts.WriteTotalTimeoutMultiplier = 0; timeouts.WriteTotalTimeoutConstant = 0; SetCommTimeouts(hFile, &timeouts); //store current setting if (0 == GetCommState(hFile, &dcb)) { return -1; } //set BaudRate switch (nSpeed) { case 2400: dcb.BaudRate = CBR_2400; break; case 4800: dcb.BaudRate = CBR_4800; break; case 115200: dcb.BaudRate = CBR_115200; break; default: dcb.BaudRate = CBR_9600; break; } //set ByteSize switch (nBits) { case 7: dcb.ByteSize = 7; break; case 8: dcb.ByteSize = 8; break; default: dcb.ByteSize = 8; break; } //set Parity switch (nEvent) { case 'N': dcb.Parity = NOPARITY; break; case 'O': dcb.Parity = ODDPARITY; break; case 'E': dcb.Parity = EVENPARITY; break; } //set StopBit switch (nStop) { case 1: dcb.StopBits = ONESTOPBIT; break; case 2: dcb.StopBits = TWOSTOPBITS; break; } if (0 == SetCommState(hFile, &dcb)) { return -1; } return 0; } rs232_device rs232_dev; void Comer::init() { //此处静态成员不能使用 this-> rs232_dev.baudrate = 115200; rs232_dev.bytesize = 8; rs232_dev.parity = 'N'; rs232_dev.stopbit = 1; //打开串口4 rs232_dev.hCom = CreateFile("COM6", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); if (rs232_dev.hCom != INVALID_HANDLE_VALUE) { printf("Open COM6 OK!\n"); } else printf("Open COM6 Fail!\n"); //通讯设置 if (-1 == set_opt(rs232_dev.hCom, rs232_dev.baudrate, rs232_dev.bytesize, rs232_dev.parity, rs232_dev.stopbit)) { if (INVALID_HANDLE_VALUE != rs232_dev.hCom) CloseHandle(rs232_dev.hCom); } } void Comer::send() { unsigned char readBuf[1024] = { 0 }; int count = 5; byte bts[5] = { 1,0xE1,1,0,1 }; DWORD writesize = 0; WriteFile(rs232_dev.hCom, bts, count, &writesize, NULL); } void Comer::dispose() { CloseHandle(rs232_dev.hCom); rs232_dev.hCom = nullptr; } ~~~