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  1. #include "stdafx.h"
  2.  
  3.  
  4. #include <windows.h>
  5. #include <iostream>
  6. using namespace std;
  7. int n=0;
  8. char var;
  9.  
  10.  
  11. HANDLE hSerial;
  12. void ReadCOM()
  13. {
  14. 	DWORD iSize;
  15. 	char sReceivedChar;
  16. 	while (true)
  17. 	{
  18. 		ReadFile(hSerial, &sReceivedChar, 1, &iSize, 0);  // получаем 1 байт
  19. 		if (iSize > 0)   // если что-то принято, выводим
  20. 			cout << sReceivedChar;
  21. 	}
  22. }
  23.  
  24. int _tmain(int argc, _TCHAR* argv[])
  25. {
  26.  
  27.  
  28.  
  29. 	LPCTSTR sPortName = L"COM3";
  30.  
  31.  
  32.  
  33. 	hSerial = ::CreateFile(sPortName, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
  34.  
  35. 	if (hSerial == INVALID_HANDLE_VALUE)
  36. 	{
  37. 		if (GetLastError() == ERROR_FILE_NOT_FOUND)
  38. 		{
  39. 			cout << "serial port does not exist.\n";
  40. 		}
  41. 		cout << "some other error occurred.\n";
  42. 	}
  43.  
  44.  
  45. 	DCB dcbSerialParams = { 0 };
  46. 	dcbSerialParams.DCBlength = sizeof(dcbSerialParams);
  47. 	if (!GetCommState(hSerial, &dcbSerialParams))
  48. 	{
  49. 		cout << "getting state error\n";
  50. 	}
  51. 	dcbSerialParams.BaudRate = CBR_9600;
  52. 	dcbSerialParams.ByteSize = 8;
  53. 	dcbSerialParams.StopBits = ONESTOPBIT;
  54. 	dcbSerialParams.Parity = NOPARITY;
  55. 	if (!SetCommState(hSerial, &dcbSerialParams))
  56. 	{
  57. 		cout << "error setting serial port state\n";
  58. 	}
  59.  
  60. 	do
  61. 	{
  62. 		cout << "0- on, 1- off, 4 -exit\n";
  63. 		cin >> n;
  64. 		switch (n)
  65. 		{
  66. 		case 1:
  67. 			cout << "OFF\n";
  68. 			var = 0x31;
  69. 			break;
  70.  
  71. 		case 0:
  72. 			cout << "ON\n";
  73. 			var = 0x30;
  74. 			break;
  75. 		case 4:
  76. 			exit(EXIT_SUCCESS);
  77. 			break;
  78. 		default:
  79. 			cerr << "WRONG" << endl;
  80.  
  81. 		}
  82. 	} while (n != 4);
  83.  
  84.  
  85. 	char data[] = {var};  // строка для передачи
  86. 	DWORD dwSize = sizeof(data);   // размер этой строки
  87. 	DWORD dwBytesWritten;    // тут будет количество собственно переданных байт
  88.  
  89.  
  90.  
  91. 	BOOL iRet = WriteFile(hSerial, data, dwSize, &dwBytesWritten, NULL);
  92.  
  93.  
  94. 	return 0;
  95. }
  96.  
  97.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp:1:20: fatal error: stdafx.h: No such file or directory
compilation terminated.
stdout 
Standard output is empty
https://ideone.com/vVkGc3
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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