From fdeb2f3f0f6ca19cb93c36c0b11235a724e55b9a Mon Sep 17 00:00:00 2001
From: skarg <skarg@1e814d3a-8a88-4260-be86-c0dc25669c1e>
Date: Tue, 20 Oct 2009 17:25:17 +0000
Subject: [PATCH] Changed RS485 interface to allow lower/upper case for Win32.

---
 bacnet-stack/ports/win32/rs485.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/bacnet-stack/ports/win32/rs485.c b/bacnet-stack/ports/win32/rs485.c
index 4a73636c..392fe262 100644
--- a/bacnet-stack/ports/win32/rs485.c
+++ b/bacnet-stack/ports/win32/rs485.c
@@ -47,9 +47,9 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <ctype.h>
 #include "mstp.h"
 #include "dlmstp.h"
-
 #define WIN32_LEAN_AND_MEAN
 #define STRICT 1
 #include <windows.h>
@@ -83,6 +83,20 @@ static DWORD RS485_DTRControl = DTR_CONTROL_DISABLE;
     RTS_CONTROL_HANDSHAKE, RTS_CONTROL_TOGGLE */
 static DWORD RS485_RTSControl = RTS_CONTROL_DISABLE;
 
+/****************************************************************************
+* DESCRIPTION: Change the characters in a string to uppercase
+* RETURN:      nothing
+* ALGORITHM:   none
+* NOTES:       none
+*****************************************************************************/
+void strupper(char *str) 
+{
+    char *p;
+    for (p = str; *p != '\0'; ++p) {
+       *p = toupper(*p);
+    }
+}
+
 /****************************************************************************
 * DESCRIPTION: Initializes the RS485 hardware and variables, and starts in
 *              receive mode.
@@ -97,6 +111,7 @@ void RS485_Set_Interface(
        for CreateFile. The syntax also works for COM ports 1-9. */
     /* http://support.microsoft.com/kb/115831 */
     if (ifname) {
+        strupper(ifname); 
         if (strncmp("COM", ifname, 3) == 0) {
             if (strlen(ifname) > 3) {
                 sprintf(RS485_Port_Name, "\\\\.\\COM%i", atoi(ifname + 3));