You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
182 lines
4.4 KiB
182 lines
4.4 KiB
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include "windows.h"
|
|
|
|
#define BIGWRITE 256000
|
|
unsigned char writebuff[BIGWRITE];
|
|
|
|
int __cdecl main(int argc,char *argv[]) {
|
|
|
|
HANDLE hFile;
|
|
DCB MyDcb;
|
|
char *MyPort = "COM1";
|
|
DWORD NumberActuallyWritten;
|
|
DWORD NumberToWrite = 0;
|
|
DWORD UseBaud = 19200;
|
|
COMMTIMEOUTS MyTimeouts = {0};
|
|
clock_t Start;
|
|
clock_t Finish;
|
|
|
|
if (argc > 1) {
|
|
|
|
sscanf(argv[1],"%d",&NumberToWrite);
|
|
|
|
if (argc > 2) {
|
|
|
|
sscanf(argv[2],"%d",&UseBaud);
|
|
|
|
if (argc > 3) {
|
|
|
|
MyPort = argv[3];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
printf("Will try to write %d characters.\n",NumberToWrite);
|
|
printf("Will try to write at %d baud.\n",UseBaud);
|
|
printf("Using port: %s\n",MyPort);
|
|
|
|
if ((hFile = CreateFile(
|
|
MyPort,
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
0,
|
|
NULL,
|
|
CREATE_ALWAYS,
|
|
FILE_ATTRIBUTE_NORMAL,
|
|
NULL
|
|
)) != ((HANDLE)-1)) {
|
|
|
|
printf("We successfully opened the %s port.\n",MyPort);
|
|
|
|
//
|
|
// Make sure that there is no timeouts left around.
|
|
//
|
|
|
|
if (!SetCommTimeouts(
|
|
hFile,
|
|
&MyTimeouts
|
|
)) {
|
|
|
|
printf("Coundn't set the timeouts\n");
|
|
exit(1);
|
|
|
|
}
|
|
|
|
//
|
|
// We've successfully opened the file. Set the state of
|
|
// the comm device. First we get the old values and
|
|
// adjust to our own.
|
|
//
|
|
|
|
if (!GetCommState(
|
|
hFile,
|
|
&MyDcb
|
|
)) {
|
|
|
|
printf("Couldn't get the comm state: %d\n",GetLastError());
|
|
exit(1);
|
|
|
|
}
|
|
|
|
MyDcb.BaudRate = UseBaud;
|
|
MyDcb.ByteSize = 8;
|
|
MyDcb.Parity = NOPARITY;
|
|
MyDcb.StopBits = ONESTOPBIT;
|
|
|
|
//
|
|
// Make sure that the only flow control is output cts.
|
|
//
|
|
|
|
MyDcb.fOutxDsrFlow = FALSE;
|
|
MyDcb.fOutxCtsFlow = TRUE;
|
|
MyDcb.fDsrSensitivity = FALSE;
|
|
MyDcb.fOutX = FALSE;
|
|
MyDcb.fInX = FALSE;
|
|
MyDcb.fDtrControl = DTR_CONTROL_DISABLE;
|
|
MyDcb.fRtsControl = RTS_CONTROL_DISABLE;
|
|
|
|
if (SetCommState(
|
|
hFile,
|
|
&MyDcb
|
|
)) {
|
|
|
|
unsigned char j;
|
|
DWORD TotalCount;
|
|
|
|
printf("We successfully set the state of the %s port.\n",MyPort);
|
|
|
|
for (
|
|
TotalCount = 0;
|
|
TotalCount < NumberToWrite;
|
|
) {
|
|
|
|
for (
|
|
j = 0;
|
|
j <= 9;
|
|
j++
|
|
) {
|
|
|
|
writebuff[TotalCount] = j;
|
|
TotalCount++;
|
|
if (TotalCount >= NumberToWrite) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
Start = clock();
|
|
if (WriteFile(
|
|
hFile,
|
|
writebuff,
|
|
NumberToWrite,
|
|
&NumberActuallyWritten,
|
|
NULL
|
|
)) {
|
|
|
|
Finish = clock();
|
|
printf("Time to write %f\n",(((double)(Finish-Start))/CLOCKS_PER_SEC));
|
|
printf("Chars per second %f\n",((double)NumberActuallyWritten)/(((double)(Finish-Start))/CLOCKS_PER_SEC));
|
|
|
|
printf("Well we thought the write went ok.\n");
|
|
printf("Number actually written %d.\n",NumberActuallyWritten);
|
|
|
|
} else {
|
|
|
|
DWORD LastError;
|
|
LastError = GetLastError();
|
|
printf("Couldn't write the %s device.\n",MyPort);
|
|
printf("Status of failed write is: %x\n",LastError);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
DWORD LastError;
|
|
LastError = GetLastError();
|
|
printf("Couldn't set the %s device.\n",MyPort);
|
|
printf("Status of failed set is: %x\n",LastError);
|
|
|
|
}
|
|
|
|
CloseHandle(hFile);
|
|
|
|
} else {
|
|
|
|
DWORD LastError;
|
|
LastError = GetLastError();
|
|
printf("Couldn't open the %s device.\n",MyPort);
|
|
printf("Status of failed open is: %x\n",LastError);
|
|
|
|
}
|
|
|
|
}
|