Revision 2:193926923cb0, committed 2012-01-17

Comitter:

Wimpie

Date:

Tue Jan 17 08:30:45 2012 +0000

Parent:

1:7218c076189b

Commit message:

readbyte readword

Changed in this revision

diff -r 7218c076189b -r 193926923cb0 OneWireCRC.cpp
--- a/OneWireCRC.cpp	Sun Apr 17 17:26:52 2011 +0000
+++ b/OneWireCRC.cpp	Tue Jan 17 08:30:45 2012 +0000
@@ -102,7 +102,11 @@
 //--------------------------------------------------------------------------
 
 #include "OneWireCRC.h"
-#include "OneWireDefs.h"
+
+// ROM commands
+#define OVERDRIVE_SKIP    0x3C
+#define MATCH_ROM          0x55
+#define SKIP_ROM           0xCC
 
 // recommended data sheet timings in micro seconds
 const int standardT[] = {6, 64, 60, 10, 9, 55, 0, 480, 70, 410};

diff -r 7218c076189b -r 193926923cb0 OneWireEEPROM.cpp
--- a/OneWireEEPROM.cpp	Sun Apr 17 17:26:52 2011 +0000
+++ b/OneWireEEPROM.cpp	Tue Jan 17 08:30:45 2012 +0000
@@ -54,6 +54,8 @@
         for (int i = 0; i < ADDRESS_SIZE; i++)
             _ROMCode[i]=0;
     }
+
+    active=0;
 }
 
 
@@ -135,7 +137,7 @@
     } else {
         output.printf("OneWireEEPROM present and correct.\r\n");
     }
-
+    active=1;
     return true;
 }
 
@@ -241,7 +243,7 @@
             oneWire.writeByte(_TA1);
             oneWire.writeByte(_TA2);
 
-            output.printf ("\r\nReading... TA1=%X TA2=%X",_TA1, _TA2);
+            //       output.printf ("\r\nReading... TA1=%X TA2=%X",_TA1, _TA2);
 
             for (memPtr = 0; memPtr < Size; memPtr++) {
                 tmpReader = oneWire.readByte();
@@ -253,7 +255,7 @@
 
                 Destination[memPtr] = tmpReader;
             }
-            output.printf ("-> %i byte(s)\r\n",memPtr);
+            //    output.printf ("-> %i byte(s)\r\n",memPtr);
             return memPtr;
 
         }  else {
@@ -307,14 +309,80 @@
 }
 
 bool OneWireEEPROM::WriteWord(uint16_t v, uint16_t Address) {
+    bool ok=false;
+    int it=0;
     uint8_t Mem[2];
     Mem[0]=(uint8_t)(v & 0x00FF);
     Mem[1]=(uint8_t)((v & 0xFF00)>>8);
-    return WriteMemory(Mem,Address,2);
+
+    do {
+        ok=WriteMemory(Mem,Address,2);
+        it++;
+    } while ((ok==false) && (it<5));
+    if (it>1) {
+        output.printf (" EEPROM WriteWord %i times ->",it);
+        if (ok)
+            output.printf("ok\r\n");
+        else
+            output.printf("not ok\r\n");
+    }
+    return ok;
 }
 
 bool OneWireEEPROM::WriteByte(uint8_t b, uint16_t Address) {
+    bool ok=false;
+    int it=0;
     uint8_t Mem[1];
     Mem[0]=(uint8_t)(b & 0x00FF);
-    return WriteMemory(Mem,Address,1);
+    do {
+        ok=WriteMemory(Mem,Address,1);
+        it++;
+    } while ((ok==false) && (it<5));
+    if (it>1) {
+        output.printf (" EEPROM WriteByte %i times ->",it);
+        if (ok)
+            output.printf("ok\r\n");
+        else
+            output.printf("not ok\r\n");
+    }
+    return ok;
+}
+
+uint16_t OneWireEEPROM::ReadWord(uint16_t Address) {
+    int size;
+    int it=0;
+
+    uint8_t Mem[2];
+    do {
+        size=ReadMemory(Mem,Address,2);
+        it++;
+    } while ((size==0) && (it<5));
+//   output.printf ("%i %i \r\n",Mem[0],Mem[1]);
+    if (it>1) {
+        output.printf (" EEPROM ReadWord %i times ->",it);
+        if (size>0)
+            output.printf("ok\r\n");
+        else
+            output.printf("not ok\r\n");
+    }
+    return (uint16_t)Mem[0] + (uint16_t) (Mem[1]<<8);
+}
+
+uint8_t OneWireEEPROM::ReadByte(uint8_t Address) {
+    int size;
+    int it=0;
+    uint8_t Mem[1];
+    do {
+        size=ReadMemory(Mem,Address,1);
+        it++;
+    } while ((size==0) && (it<5));
+    //  output.printf ("%i \r\n",Mem[0]);
+    if (it>1) {
+        output.printf (" EEPROM ReadByte %i times ->",it);
+        if (size>0)
+            output.printf("ok\r\n");
+        else
+            output.printf("not ok\r\n");
+    }
+    return (uint8_t) Mem[0];
 }
\ No newline at end of file

diff -r 7218c076189b -r 193926923cb0 OneWireEEPROM.h
--- a/OneWireEEPROM.h	Sun Apr 17 17:26:52 2011 +0000
+++ b/OneWireEEPROM.h	Tue Jan 17 08:30:45 2012 +0000
@@ -44,6 +44,8 @@
 #define COPYSCRATCHPAD    0x55
 #define READMEMORY        0xF0
 
+
+
 #define PAGESIZE          0x20  // 32 bytes for each page
 #define DS2433PAGES       0x10  // 16 pages 
 #define DS28EC20PAGES     0x50  // 80 pages 
@@ -79,6 +81,9 @@
     bool WriteMemory(uint8_t* Source, uint16_t Address, uint8_t Size);
     bool WriteWord(uint16_t v,uint16_t Address);
     bool WriteByte(uint8_t b,uint16_t Address);
+    
+    uint16_t ReadWord(uint16_t Address);
+    uint8_t ReadByte(uint8_t Address);
     //
     int ReadMemory(uint8_t* Destination, uint16_t Address, uint16_t Size);
     void ShowMemory(int PageFrom, int PageTo);