Diff: OneWireEEPROM.h

Revision:

0:0f7bbfde44b7

Child:

1:7218c076189b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OneWireEEPROM.h	Mon Mar 21 20:33:46 2011 +0000
@@ -0,0 +1,104 @@
+/*
+* OneWireEEPROM. Library for Maxim One-Wire EEPROM.
+*
+* see http://www.maxim-ic.com
+*
+* DS2433
+* DS28EC20
+*
+* Copyright (C) <2011> Wim De Roeve <wim312@gmail.com>
+*
+* Uses the OneWireCRC library. http://mbed.org/users/snatch59/programs/OneWireCRC/gpdz56
+*
+* OneWire EEPROM is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* OneWireEEPROM is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#ifndef _OneWireEEPROM_H
+#define _OneWireEEPROM_H
+
+#include "OneWireCRC.h"
+
+//  OneWire info
+#define ADDRESS_SIZE      8
+#define ADDRESS_CRC_BYTE  7
+
+// OneWire device-id
+#define DS2433EEPROM_ID         0x23
+#define DS28EC20EEPROM_ID       0x43
+
+// OneWireEEPROM related
+#define WRITESCRATCHPAD   0x0F
+#define READSCRATCHPAD    0xAA
+#define COPYSCRATCHPAD    0x55
+#define READMEMORY        0xF0
+
+#define PAGESIZE          0x20  // 32 bytes for each page
+#define DS2433PAGES       0x10  // 16 pages 
+#define DS28EC20PAGES     0x50  // 80 pages 
+
+/*
+
+DS2433 is a 4096 bit EEPROM
+  4096 bits (512 bytes) in 16 pages of 256 bits (32 bytes)
+
+ADDRESS 32-BYTE intermediate storage scratchpad
+0x0000 to 0x001F   32 byte finale storage EEPROM    PAGE 0
+0x0020 to 0x003F   32 byte finale storage EEPROM    PAGE 1
+0x0040 to 0x01DF   32 byte finale storage EEPROM    PAGE 2 to PAGE 14
+0x01E0 to 0x01FF   32 byte finale storage EEPROM    PAGE 15
+
+DS28EC20 is a 20480-bit EEPROM
+ 20480 bits (2560 bytes) in 80 pages of 256 bits (32 bytes)
+
+ADDRESS 32-BYTE intermediate storage scratchpad
+0x0000 to 0x001F   32 byte finale storage EEPROM    PAGE 0
+0x0020 to 0x003F   32 byte finale storage EEPROM    PAGE 1
+0x0040 to 0x09DF   32 byte finale storage EEPROM    PAGE 2 to PAGE 78
+0x09E0 to 0x09FF   32 byte finale storage EEPROM    PAGE 79
+
+*/
+enum DSTYPE { DS2433 = 1, DS28EC20 = 2};
+
+class OneWireEEPROM {
+public:
+    OneWireEEPROM(PinName pin, bool crcOn, bool useAddr, bool parasitic, DSTYPE ds);
+    bool Initialize(uint8_t* ROMaddress);
+    //
+    bool WriteMemory(uint8_t* Source, uint16_t Address, uint8_t Size);
+    //
+    int ReadMemory(uint8_t* Destination, uint16_t Address, uint16_t Size);
+    void ShowMemory(int PageFrom, int PageTo);
+    bool active;
+
+    BYTE ROMCode[8];
+
+protected:
+
+    OneWireCRC oneWire;
+
+    bool _useParasiticPower;
+    bool _useCRC;
+    bool _useAddress;
+    int _memsize;
+    int _pages;
+    int _eeprom_id;
+
+
+    void ResetAndAddress();
+
+};
+
+
+#endif
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