Revision 0:e295d3596c85, committed 2014-09-10

Comitter:

mederic

Date:

Wed Sep 10 08:57:38 2014 +0000

Commit message:

first release

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Ee24xx08.cpp	Wed Sep 10 08:57:38 2014 +0000
@@ -0,0 +1,49 @@
+#include "Ee24xx08.h"
+
+
+//***********************************/************************************
+//                         Constructors                                 //
+//***********************************/************************************
+Ee24xx08::Ee24xx08(I2C *i2c):_i2c(i2c)
+{ 
+}
+
+//***********************************/************************************
+//                             Public Methods                           //
+//***********************************/************************************      
+bool Ee24xx08::write(const short  addr, const char byte)
+{
+    char i2cBuffer[2];
+    i2cBuffer[0] = (unsigned char)addr; //8lsb of address word
+    i2cBuffer[1] = byte;                //byte to write
+    return _i2c->write(EE24xx08ADDR|((addr>>7)&0X0E),i2cBuffer,2);  //i2c adress + page adress & data send
+}
+
+bool Ee24xx08::write(const short  addr, const char* buffer,const int len)
+{
+    char i2cBuffer[len+1];
+    i2cBuffer[0] = (unsigned char)addr;
+    memcpy(i2cBuffer+1,buffer,len);
+
+    return _i2c->write(EE24xx08ADDR|((addr>>7)&0X0E),i2cBuffer,len);
+}
+
+bool Ee24xx08::read(const short  addr, char *byte)
+{
+
+    if(_i2c->write(EE24xx08ADDR|((addr>>7)&0X0E),(char*)&addr,1,true))
+    {
+        return true;   
+    }
+    return _i2c->read(EE24xx08ADDR|((addr>>7)&0X0E),byte,1);
+}
+
+bool Ee24xx08::read(const short  addr, char *buffer, const int len)
+{
+
+    if(_i2c->write(EE24xx08ADDR|((addr>>7)&0X0E),(char*)&addr,1,true))
+    {
+        return true;   
+    }
+    return _i2c->read(EE24xx08ADDR|((addr>>7)&0X0E),buffer,len);
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Ee24xx08.h	Wed Sep 10 08:57:38 2014 +0000
@@ -0,0 +1,77 @@
+#ifndef EE24XX08_H
+#define EE24XX08_H
+
+#include "mbed.h"
+
+#define EE24xx08ADDR  0xA0
+
+/** Ee24xx08 class.
+ *  I2C eeprom (without functional adress pins) driver
+ *  for 24xx00,24xx01,24xx02,24xx04,24xx08,24xx016 device
+ 
+ * Example:
+ * @code
+ * #include "mbed.h"
+ * #include "Ee24xx08.h"
+ *
+ * Serial ser(USBTX,USBRX);
+ * I2C iic(p28,p27);Ee24xx08 eeprom(&iic, &ser);
+ *
+ * int main() 
+ * {
+ *    char str[12] = "hello wolrd";
+ *
+ *     eeprom.write(54,str,12);
+ *     wait(1);
+ *     eeprom.read(54,str,12);
+ *     ser.printf("%s\r\n",str);
+ *     
+ *     while(1) 
+ *     {
+ *     }
+ * }
+ * @endcode
+ */  
+class Ee24xx08
+{
+    public:
+    /** Create Ee24xx08 instance
+    * @param I2C bus connected to eeprom
+    */
+    Ee24xx08(I2C *i2c);
+    
+    /**Write byte on eeprom
+    * @param addr Byte address in memory
+    * @param byte Byte to write in memory
+    * @returns 0 if succes
+    */   
+    bool write(const short  addr, const char byte);
+    
+    /**Write buffer on eeprom
+    * @param addr Buffer start address in memory
+    * @param buffer buffer to write in memory
+    * @param len number of byte to write in memory
+    * @returns 0 if succes
+    */     
+    bool write(const short  addr, const char* buffer,const int len);
+    
+    /**Read byte on eeprom
+    * @param addr Byte address in memory
+    * @param byte Byte to read in memory
+    * @returns 0 if succes
+    */ 
+    bool read(const short  addr, char *byte);
+    
+    /**Read buffer on eeprom
+    * @param addr Buffer start address in memory
+    * @param buffer buffer to read in memory
+    * @param len number of byte to read in memory
+    * @returns 0 if succes
+    */ 
+    bool read(const short  addr, char* buffer,const int len);
+        
+    protected:
+        I2C *_i2c;
+};
+
+#endif
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