Diff: owTemp.cpp

Revision:

0:1193dbfe28e2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/owTemp.cpp	Thu Mar 24 17:21:29 2011 +0000
@@ -0,0 +1,141 @@
+//---------------------------------------------------------------------------
+// Copyright (C) 2000 Dallas Semiconductor Corporation, All Rights Reserved.
+//
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL DALLAS SEMICONDUCTOR BE LIABLE FOR ANY CLAIM, DAMAGES
+// OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+// OTHER DEALINGS IN THE SOFTWARE.
+//
+// Except as contained in this notice, the name of Dallas Semiconductor
+// shall not be used except as stated in the Dallas Semiconductor
+// Branding Policy.
+//---------------------------------------------------------------------------
+//
+//  temp.c -   Application to find and read the 1-Wire Net
+//             DS1920/DS1820/DS18S20 - temperature measurement.
+//
+//             This application uses the files from the 'Public Domain'
+//             1-Wire Net libraries ('general' and 'userial').
+//
+//
+//  Version: 2.00
+//
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "owTemp.h"
+#include "ownet.h"
+#include "readDS1920.h"
+#include "findtype.h"
+
+// defines
+#define MAXDEVICES         20
+
+// global serial numbers
+uchar FamilySN[MAXDEVICES][8];
+
+// variables
+int family_code;
+
+
+
+owTemp::owTemp ()
+{
+
+
+}
+
+
+void PrintSerialNum(uchar* buffer)
+{
+   int i;
+   for(i=7; i>=0; i--)
+   {
+      printf("%02X", buffer[i]);
+   }
+}
+
+
+//----------------------------------------------------------------------
+//  Main Test for DS1920/DS1820 temperature measurement
+//
+void owTemp::Maingettemp( void )
+{
+   float current_temp;
+   int i = 0;
+   int NumDevices=0;
+   int portnum = 0;
+        
+   
+   //----------------------------------------
+   // Introduction header
+   printf("\r\n/---------------------------------------------\r\n");
+   printf("  Temperature application DS1920/DS1820 - Version 1.00 \r\n"
+          "  The following is a test to exercise a DS1920/DS1820.\r\n"
+          "  Temperature Find and Read from a: \r\n"
+          "  DS1920/DS1820 (at least 1)\r\n\r\n");
+
+   printf("  Press any CTRL-C to stop this program.\r\n\r\n");
+   printf("  Output [Serial Number(s) ........ Temp1(F)] \r\n\r\n");
+
+    // attempt to acquire the 1-Wire Net
+   portnum = owAcquireEx("1");
+   
+   // success
+   printf("Port opened: %i\r\n", portnum);
+
+   // Find the device(s)
+   NumDevices = FindDevices(portnum, &FamilySN[0], 0x10, MAXDEVICES);
+      
+   if (NumDevices>0)
+   {
+      printf("\r\n");
+      printf("Device(s) Found: \r\n");
+      for (i = 0; i < NumDevices; i++)
+      {
+         PrintSerialNum(FamilySN[i]);
+         printf("\r\n");
+      }
+      printf("\r\n\r\n");
+
+        while (1)
+        {
+             // read the temperature and print serial number and temperature
+             for (i = 0; i < NumDevices; i++)
+             {
+                if (ReadTemperature(portnum, FamilySN[i],&current_temp))
+                {
+                    float far = current_temp * 9.0 / 5.0 + 32.0;
+                   PrintSerialNum(FamilySN[i]);
+                   printf("      %5.1f Degrees Farenheight\r\n", far);
+                  // converting temperature from Celsius to Fahrenheit
+                }
+                else
+                   printf("     Error reading temperature, verify device present:%d\r\n",
+                           (int)owVerify(portnum, FALSE));
+             }
+             printf("\r\n");
+        }
+
+   }
+   else
+      printf("\r\n\r\n\r\nERROR, device DS1920/DS1820 not found!\r\n");
+
+   // release the 1-Wire Net
+   owRelease(portnum);
+}
+