Revision 1:41cf2e3bb7f3, committed 2020-08-05

Comitter:

sashida_h

Date:

Wed Aug 05 10:15:46 2020 +0000

Parent:

0:8047024a08c2

Commit message:

initial commit

Changed in this revision

diff -r 8047024a08c2 -r 41cf2e3bb7f3 24LC1025.cpp
--- a/24LC1025.cpp	Wed Nov 20 03:55:16 2019 +0000
+++ b/24LC1025.cpp	Wed Aug 05 10:15:46 2020 +0000
@@ -1,37 +1,79 @@
 #include "24LC1025.h"
-// 24LC64 の書き込み、読み込みテスト
+
+/*
+ref.http://akizukidenshi.com/download/I-02525_24lc1025.pdf
+Created by sassy,CORE
+
+*/
 
-//I2C  i2c(p9, p10); //p9: data, p10: clock
+//******************************************************************************
+LC1025::LC1025(PinName sda, PinName scl)
+{
+    i2c_ = new I2C(sda, scl);
+    i2c_->frequency(400000);
+}
 
-I2CEEprom::I2CEEprom():I2C(PB_7,PB_6)
-{
-  addr = 0xA0;
+//******************************************************************************
+LC1025::LC1025(I2C *i2c):i2c_(i2c){}
+
+//******************************************************************************
+LC1025::~LC1025()
+{    
+   delete i2c_;
 }
-I2CEEprom::I2CEEprom(PinName data, PinName clock, int address):I2C(data, clock)
+
+void LC1025::writeByte(uint8_t address, uint16_t subAddress, uint8_t data)
 {
-  addr = address;
+   char data_write[3];
+   data_write[0] = (subAddress >> 8) & 0xff ;
+   data_write[1] = (subAddress) & 0xff ;
+   data_write[2] = data;
+   i2c_->write(address, data_write, 3);
 }
 
-void I2CEEprom::write(unsigned int address,  unsigned char data)
+void LC1025::PageWrite(uint8_t address, uint16_t subAddress, char *data, int num)
 {
-    start();
-    ((I2C*)this)->write(addr);
-    ((I2C*)this)->write((address>>8));
-    ((I2C*)this)->write(address);
-    ((I2C*)this)->write(data);
-    stop();
+   char data_write[num+2];
+   data_write[0] = (subAddress >> 8) & 0xff ;
+   data_write[1] = (subAddress) & 0xff ;
+   for(int i = 0; i < num; i++){
+        data_write[i+2] = data[i];
+   }
+   i2c_->write(address, data_write, num+2);
+}
+
+char LC1025::RandomRead(uint8_t address, uint16_t subAddress)
+{
+    char data[1]; // `data` will store the register data     
+    char data_write[2];
+    data_write[0] = (subAddress>>8) & 0xff;
+    data_write[1] = subAddress & 0xff;
+    i2c_->write(address, data_write, 2, true);
+    i2c_->read(address+1, data, 1, true);
+    i2c_->stop();
+    return data[0]; 
 }
 
-unsigned char I2CEEprom::read(unsigned int address)
+char LC1025::SequentialRead(uint8_t address, uint16_t subAddress)
 {
-    unsigned char x;
-    start();
-    ((I2C*)this)->write(addr);
-    ((I2C*)this)->write((address>>8));
-    ((I2C*)this)->write(address);
-    start();
-    ((I2C*)this)->write(addr+1);
-    x = ((I2C*)this)->read(0);
-    stop();
-    return x;
-}
\ No newline at end of file
+    char data[1]; // `data` will store the register data     
+    char data_write[2];
+    data_write[0] = (subAddress>>8) & 0xff;
+    data_write[1] = subAddress & 0xff;
+    i2c_->write(address, data_write, 2, true);
+    i2c_->read(address+1, data, 0xffff, true);
+    i2c_->stop();
+    return data[0];
+}
+
+void LC1025::readBytes(uint8_t address, uint8_t subAddress, uint8_t count, uint8_t * dest)
+{     
+    char data[14];
+    char data_write[1];
+    data_write[0] = subAddress;
+    i2c_->write(address, data_write, 1, true); // no stop
+    i2c_->read(address, data, count, 0); 
+    for(int ii = 0; ii < count; ii++) {
+     dest[ii] = data[ii];
+    }
+} 
\ No newline at end of file

diff -r 8047024a08c2 -r 41cf2e3bb7f3 24LC1025.h
--- a/24LC1025.h	Wed Nov 20 03:55:16 2019 +0000
+++ b/24LC1025.h	Wed Aug 05 10:15:46 2020 +0000
@@ -1,13 +1,23 @@
 #include "mbed.h"
+#include "math.h"
 // 24LC64 の書き込み、読み込みテスト
 
-class I2CEEprom : public I2C
-{
-private:
-  unsigned char addr;
-public:
-  I2CEEprom();
-  I2CEEprom(PinName data, PinName clock, int address);
-  void write(unsigned int address,  unsigned char data);
-  unsigned char read(unsigned int address);
+#define ADDRESS_24LC1025_BLOCK0  0xA0 //B0=0,A0=0,A1=0 : 10100000
+#define ADDRESS_24LC1025_BLOCK1  0xA8 //B0=1,A0=0,A1=0 : 10101000
+
+class LC1025{
+
+  public:
+    LC1025(PinName sda, PinName scl);
+    LC1025(I2C *i2c);
+    ~LC1025();
+
+    void writeByte(uint8_t address, uint16_t subAddress, uint8_t data);
+    void PageWrite(uint8_t address, uint16_t subAddress, char *data, int num);
+    char RandomRead(uint8_t address, uint16_t subAddress);
+    char SequentialRead(uint8_t address, uint16_t subAddress);
+    void readBytes(uint8_t address, uint8_t subAddress, uint8_t count, uint8_t * dest);
+
+  private:
+         I2C *i2c_; 
 };
\ No newline at end of file