150 lines
5.0 KiB
C
150 lines
5.0 KiB
C
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "windows.h"
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void _CRTAPI1 main(int argc,char *argv[]) {
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HANDLE hFile;
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COMMPROP mp;
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DWORD testbaud;
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char *MyPort = "COM1";
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if (argc > 1) {
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MyPort = argv[1];
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}
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printf("Using port %s\n",MyPort);
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if ((hFile = CreateFile(
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MyPort,
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GENERIC_READ | GENERIC_WRITE,
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0,
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NULL,
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CREATE_ALWAYS,
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FILE_ATTRIBUTE_NORMAL,
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NULL
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)) != ((HANDLE)-1)) {
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printf("We successfully opened the %s port.\n",MyPort);
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//
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// Get the state of the comm port and then
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// adjust the values to our liking.
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//
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if (!GetCommProperties(
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hFile,
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&mp
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)) {
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printf("Couldn't get comm properties: %d\n",GetLastError());
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exit(1);
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} else {
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printf("PacketLength: %d\n",mp.wPacketLength);
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if (mp.wPacketLength != sizeof(COMMPROP)) {
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printf("Packet length is not sizeof(COMMPROP))\n",sizeof(COMMPROP));
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}
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printf("PacketVersion: %d\n",mp.wPacketVersion);
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if (mp.dwServiceMask != SP_SERIALCOMM) {
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printf("Bad Service mask: %x\n",mp.dwServiceMask);
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}
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printf("MaxTxQueue: %d\n",mp.dwMaxTxQueue);
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printf("MaxRxQueue: %d\n",mp.dwMaxRxQueue);
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printf("MaxBaud: %d\n",mp.dwMaxBaud);
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if (mp.dwProvSubType != PST_RS232) {
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printf("Bad subtype: %x\n",mp.dwProvSubType);
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}
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if (mp.dwProvCapabilities != (PCF_DTRDSR |
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PCF_RTSCTS |
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PCF_RLSD |
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PCF_PARITY_CHECK |
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PCF_XONXOFF |
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PCF_SETXCHAR |
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PCF_TOTALTIMEOUTS |
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PCF_INTTIMEOUTS
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)) {
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printf("Bad capabilities: %x\n",mp.dwProvCapabilities);
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}
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if (mp.dwSettableParams != (SP_PARITY |
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SP_BAUD |
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SP_DATABITS |
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SP_STOPBITS |
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SP_HANDSHAKING |
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SP_PARITY_CHECK |
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SP_RLSD)) {
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printf("Bad settable parameters: %x\n",mp.dwSettableParams);
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}
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testbaud = BAUD_075 |
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BAUD_110 |
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BAUD_134_5 |
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BAUD_150 |
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BAUD_300 |
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BAUD_600 |
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BAUD_1200 |
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BAUD_1800 |
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BAUD_2400 |
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BAUD_4800 |
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BAUD_7200 |
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BAUD_9600 |
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BAUD_14400 |
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BAUD_19200;
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if (mp.dwMaxBaud == BAUD_38400) {
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testbaud |= BAUD_38400;
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} else if (mp.dwMaxBaud == BAUD_56K) {
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testbaud |= (BAUD_38400 | BAUD_56K);
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} else if (mp.dwMaxBaud == BAUD_128K) {
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testbaud |= (BAUD_56K | BAUD_38400 | BAUD_128K);
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}
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if (testbaud != mp.dwSettableBaud) {
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printf("Bad Settable baud rate: %x\n",mp.dwSettableBaud);
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}
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if (mp.wSettableData != (DATABITS_5 |
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DATABITS_6 |
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DATABITS_7 |
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DATABITS_8)) {
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printf("Bad settable data bits: %x\n",mp.wSettableData);
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}
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if (mp.wSettableStopParity != (STOPBITS_10 |
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STOPBITS_15 |
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STOPBITS_20 |
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PARITY_NONE |
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PARITY_ODD |
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PARITY_EVEN |
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PARITY_MARK |
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PARITY_SPACE)) {
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printf("Bad settable stop/parity: %x\n",mp.wSettableStopParity);
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}
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printf("Current TX queue: %d\n",mp.dwCurrentTxQueue);
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printf("Current RX queue: %d\n",mp.dwCurrentRxQueue);
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printf("ProvSepc1: %x\n",mp.dwProvSpec1);
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printf("ProvSepc2: %x\n",mp.dwProvSpec2);
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printf("ProvChar[1]: %x\n",mp.wcProvChar[1]);
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}
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} else {
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DWORD LastError;
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LastError = GetLastError();
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printf("Couldn't open the %s device.\n",MyPort);
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printf("Status of failed open is: %d\n",LastError);
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}
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}
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