Diff: VStudio2013_Sources/SerialIO.cpp

Revision:

2:ba15545a4ccf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VStudio2013_Sources/SerialIO.cpp	Wed Apr 30 16:40:10 2014 +0000
@@ -0,0 +1,176 @@
+// SerialIO.cpp : Defines the entry point for the console application.
+
+#include "stdafx.h"
+#include <windows.h>
+#include <stdio.h>
+#include "listCOM.h"
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <ctype.h>
+
+using namespace std;
+
+#define FEED 10
+#define END_OF_TRANSMISSION 23
+
+BOOL ModifyCommSettings(HANDLE hComPort);
+HANDLE hSerial;
+
+int openConn()
+{
+	DWORD cBytes_out, cBytes_in;
+	DWORD dwMask;
+	
+	char cBuffer_in[2];
+	cBuffer_in[1] = 0;
+	// Display message on console
+	printf("\nOpening Serial Port \n\r");
+
+	// Open Serial Port COMx: for Read and Write
+	hSerial = CreateFile((LPCWSTR)my_port, GENERIC_READ | GENERIC_WRITE, 0, NULL,
+		OPEN_EXISTING, 0, NULL);
+	// Check for file open errors
+	if (hSerial == INVALID_HANDLE_VALUE){
+		printf("file open errors\n");
+		Sleep(4000);
+		return 0;
+	}
+	// Modify Com Port settings (i.e. Baud Rate, #bits, parity etc)
+	if (!ModifyCommSettings(hSerial)){
+		printf("com port settings errors\n");
+		Sleep(4000);
+		return 0;
+	}
+	printf("\n Opened Serial Connection with mbed \n\r Ctrl C to exit\n\r");
+
+	// Set Communication event mask for WaitCommEvent for rxchar (receive character) in buffer
+	SetCommMask(hSerial, EV_RXCHAR | EV_ERR);
+
+	//	Setting up the reading of the text file
+	ifstream iFile("C:\\ECE4180\\hellombed.gcode");
+	if (iFile) printf("\n Gcode file opened successfully\r\n");
+
+	string line;
+	// creating a pointer to char to store the C version of the line string
+	char* c_line;
+
+	cBuffer_in[0] = 0;
+	// reading the gcode file line by line
+	while (getline(iFile, line)){
+	
+		// finding the length of the message
+		cBytes_out = line.length() + 1;
+		// allocating space for C representation of string to be sent over serial 
+		c_line = new char[cBytes_out];
+
+		//coyping data to C string c_line
+		strcpy_s(c_line, cBytes_out, line.c_str());
+
+		cout << c_line << "\r\n";
+		
+		// checking that the line contains a valid command.
+		// TODO: only checking for starting command being a G#*, might have invalid args that are not checked
+		if (c_line[0] == 'G' && isdigit(c_line[1])){
+			// sending the line over the serial link
+			if (!WriteFile(hSerial, c_line, cBytes_out, &cBytes_out, NULL)){
+				printf("\rFile write errors\n");
+				Sleep(4000);
+				return 0;
+			}
+
+			// deleting the dynamic buffer after sending
+			delete[] c_line;
+		}
+		// if the line does not have a command continue to the next line
+		else{ 
+			// deleting the dynamic buffer after sending
+			delete[] c_line;
+			continue;
+		}
+
+		// Wait for character to be sent back to UARTs input buffer - events are more efficient than looping
+		WaitCommEvent(hSerial, &dwMask, 0);
+
+		cBuffer_in[0] = 0;
+		// Loop until receiving the FEED signal
+		while (cBuffer_in[0] != FEED){
+			// Read constantly waiting for FEED character 
+			ReadFile(hSerial, cBuffer_in, 1, &cBytes_in, NULL);
+
+			/*
+			// Read any serial data and display
+			if (ReadFile(hSerial, cBuffer_in, 1, &cBytes_in, NULL)){
+
+				cout << cBuffer_in << "\r\n";
+				cout << cBytes_in << " bytes received \r\n";
+			}
+			*/
+		} //while cBuffer_in[0] != FEED
+	} // while getline
+
+	// after the last line has been sent, sent the end of transmission message
+	c_line[0] = END_OF_TRANSMISSION;
+	c_line[1] = 0;	// NULL terminate the string
+	cBytes_out = 2;
+
+	// attempt until message is sent
+	while (!WriteFile(hSerial, c_line, cBytes_out, &cBytes_out, NULL));
+
+	string input;
+	cout << "Press any key followed by ENTER to exit...\n>";
+	cin >> input;
+
+	// Close Files
+	iFile.close();
+	CloseHandle(hSerial);
+	return 0;
+}
+
+BOOL   ModifyCommSettings(HANDLE hComPort)
+{
+	COMMTIMEOUTS ctos;
+	DCB PortDCB;
+	// Initialize the DCBlength member. 
+	PortDCB.DCBlength = sizeof (DCB);
+	// Get the default serial port settings DCB information.
+	GetCommState(hSerial, &PortDCB);
+	// Change the common DCB structure settings to modify serial port settings.
+	PortDCB.BaudRate = 921600;              // Current baud 
+	PortDCB.fBinary = TRUE;               // Binary mode; no EOF check 
+	PortDCB.fParity = TRUE;               // Enable parity checking 
+	PortDCB.fOutxCtsFlow = FALSE;         // No CTS output flow control 
+	PortDCB.fOutxDsrFlow = FALSE;         // No DSR output flow control 
+	PortDCB.fDtrControl = DTR_CONTROL_ENABLE; // DTR flow control type 
+	PortDCB.fDsrSensitivity = FALSE;      // DSR sensitivity 
+	PortDCB.fTXContinueOnXoff = TRUE;     // XOFF continues Tx 
+	PortDCB.fOutX = FALSE;                // No XON/XOFF out flow control 
+	PortDCB.fInX = FALSE;                 // No XON/XOFF in flow control 
+	PortDCB.fErrorChar = FALSE;           // Disable error replacement 
+	PortDCB.fNull = FALSE;                // Disable null stripping 
+	PortDCB.fRtsControl = RTS_CONTROL_ENABLE; // RTS flow control 
+	PortDCB.fAbortOnError = FALSE;        // Do not abort reads/writes on error
+	PortDCB.ByteSize = 8;                 // Number of bits/byte, 4-8 
+	PortDCB.Parity = NOPARITY;            // 0-4=no,odd,even,mark,space 
+	PortDCB.StopBits = ONESTOPBIT;        // 0,1,2 = 1, 1.5, 2 
+	// Configure the port settings according to the new specifications  
+	// of the DCB structure.
+	if (!SetCommState(hSerial, &PortDCB)){
+		printf("Unable to configure the serial port");
+		Sleep(4000);
+		return false;
+	}
+	// Set read time outs 
+	ctos.ReadIntervalTimeout = MAXDWORD;
+	ctos.ReadTotalTimeoutMultiplier = MAXDWORD;
+	ctos.ReadTotalTimeoutConstant = 1;
+	ctos.WriteTotalTimeoutMultiplier = 0;
+	ctos.WriteTotalTimeoutConstant = 0;
+	if (!SetCommTimeouts(hSerial, &ctos)){
+		printf("Unable to configure the serial port");
+		Sleep(4000);
+		return false;
+	}
+	return true;
+}
+