初始化提交

arduino-cli/libraries/AH_24CXX/AH_24Cxx.cpp

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+
+/********************************************************
+**  Download from:                                     **
+**  http://www.arduino-projekte.de                     **
+**                                                     **
+**  Based on Code from:				       **
+**  http://arduino.cc/playground/                      **
+**                                                     **
+**  Released into the public domain.                   **
+********************************************************/
+
+#include <Arduino.h>
+#include <AH_24Cxx.h>
+#include <Wire.h> 
+
+#define AT24C01  0
+#define AT24C02  1
+#define AT24C04  2
+#define AT24C08  3
+#define AT24C16  4
+#define AT24C32  5
+#define AT24C64  6
+#define AT24C128 8
+#define AT24C256 9
+
+
+//************************************************************************
+
+// Constructor
+AH_24Cxx::AH_24Cxx(int ic_type, int deviceaddress){	
+  //  Wire.begin(); // initialise the connection
+   _mode = ic_type;
+   _deviceaddress = B01010<<3 | deviceaddress; //Address: B01010(A2)(A1)(A0)    A2=0; A1=0; A0=0 => Address: B01010000(BIN) | 0x50(HEX) | 80(DEC)
+}
+
+
+//*************************************************************************
+
+  // WARNING: address is a page address, 6-bit end will wrap around
+  // also, data can be maximum of about 30 bytes, because the Wire library has a buffer of 32 bytes
+
+  void AH_24Cxx::write_page( unsigned int eeaddresspage, byte* data, byte length ) {
+
+    Wire.beginTransmission(_deviceaddress);
+    if (_mode>4){
+      Wire.write((int)(eeaddresspage >> 8)); // MSB
+      Wire.write((int)(eeaddresspage & 0xFF)); // LSB
+    }
+    else { 
+      Wire.write((int)eeaddresspage);
+    }
+
+    byte c;
+    for ( c = 0; c < length; c++)
+      Wire.write(data[c]);
+    Wire.endTransmission();
+  }
+
+
+//*************************************************************************
+
+  // maybe let's not read more than 30 or 32 bytes at a time!
+
+  void AH_24Cxx::read_buffer(unsigned int eeaddress, byte *buffer, int length ) {
+    Wire.beginTransmission(_deviceaddress);
+    if (_mode>4){
+      Wire.write((int)(eeaddress >> 8)); // MSB
+      Wire.write((int)(eeaddress & 0xFF)); // LSB
+    }
+    else { 
+      Wire.write((int)eeaddress);
+    }
+    Wire.endTransmission();
+    Wire.requestFrom(_deviceaddress,length);
+    int c = 0;
+    for ( c = 0; c < length; c++ )
+      if (Wire.available()) buffer[c] = Wire.read();
+  }
+
+
+//*************************************************************************
+
+  void AH_24Cxx::write_byte(unsigned int eeaddress, byte data) {
+
+    int rdata = data;
+    Wire.beginTransmission(_deviceaddress);
+    if (_mode>4){
+      Wire.write((int)(eeaddress >> 8)); // MSB
+      Wire.write((int)(eeaddress & 0xFF)); // LSB
+    }
+    else { 
+      Wire.write((int)eeaddress);
+    }
+    Wire.write(rdata);
+    Wire.endTransmission();
+  }
+
+//*************************************************************************
+
+  byte AH_24Cxx::read_byte(unsigned int eeaddress) {
+    byte rdata = 0xFF;
+    Wire.beginTransmission(_deviceaddress);
+    if (_mode>4){
+      Wire.write((int)(eeaddress >> 8)); // MSB
+      Wire.write((int)(eeaddress & 0xFF)); // LSB
+    }
+    else { 
+      Wire.write((int)eeaddress);
+    }
+    Wire.endTransmission();
+    Wire.requestFrom(_deviceaddress,1);
+    if (Wire.available()) rdata = Wire.read();
+    return rdata;
+  }
+

arduino-cli/libraries/AH_24CXX/AH_24Cxx.h

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+
+/********************************************************
+**  Download from:                                     **
+**  http://www.arduino-projekte.de                     **
+**                                                     **
+**  Based on Code from:				       **
+**  http://arduino.cc/playground/                      **
+**                                                     **
+**  Released into the public domain.                   **
+********************************************************/
+
+#ifndef AH_24Cxx_h
+#define AH_24Cxx_h
+
+#include <Arduino.h>   //Arduino IDE >= V1.0
+
+
+
+class AH_24Cxx
+{
+  public:
+    // Constructor
+    AH_24Cxx(int ic_type,int deviceaddress);   	
+    void write_byte  (unsigned int eeaddress, byte data);
+    void write_page  (unsigned int eeaddresspage, byte* data, byte length);
+    byte read_byte   (unsigned int eeaddress);
+    void read_buffer (unsigned int eeaddress, byte *buffer, int length);
+
+  private:
+    int _mode;
+    int _deviceaddress;
+    
+
+
+
+};
+
+#endif 

arduino-cli/libraries/AH_24CXX/examples/AH_24Cxx_test/AH_24Cxx_test.ino

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+
+/********************************************************
+**  Download from:                                     **
+**  http://www.arduino-projekte.de                     **
+**                                                     **
+**  Based on Code from:				       **
+**  http://arduino.cc/playground/                      **
+**                                                     **
+**  Released into the public domain.                   **
+********************************************************/
+
+#include <AH_24Cxx.h>
+#include <Wire.h> 
+
+#define AT24C01  0
+#define AT24C02  1
+#define AT24C04  2
+#define AT24C08  3
+#define AT24C16  4
+#define AT24C32  5
+#define AT24C64  6
+#define AT24C128 8
+#define AT24C256 9
+//Initialisation
+
+int data;
+
+#define BUSADDRESS  0x00      
+#define EEPROMSIZE  2048     //AT24C16 2048byte
+
+AH_24Cxx ic_eeprom = AH_24Cxx(AT24C16, BUSADDRESS);
+
+void setup(){
+ Serial.begin(9600);
+ Wire.begin();
+ Serial.println("Write data");
+ for(int i = 0; i < 10; i++) {
+   data = i;
+   ic_eeprom.write_byte(i,data);
+   delay(100);
+ }
+}
+
+void loop(){
+  Serial.println("Read data");
+  for (int i=0;i<EEPROMSIZE;i++){
+    Serial.print("pos. ");
+    Serial.print(i);
+    Serial.print(": ");
+    Serial.println(ic_eeprom.read_byte(i));
+    delay(1000);
+  }
+}
+

arduino-cli/libraries/AH_24CXX/keywords.txt

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+AH_24Cxx 	KEYWORD1
+
+write_byte	KEYWORD2	
+write_page  	KEYWORD2
+read_byte  	KEYWORD2
+read_buffer	KEYWORD2
+