Revision 0:b8909823d506, committed 2014-12-28

Comitter:

kb10uy

Date:

Sun Dec 28 04:02:46 2014 +0000

Commit message:

initial commit;

Changed in this revision

diff -r 000000000000 -r b8909823d506 I2CEEPROM.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/I2CEEPROM.cpp	Sun Dec 28 04:02:46 2014 +0000
@@ -0,0 +1,28 @@
+#include "I2CEEPROM.h"
+
+I2CEEPROM::I2CEEPROM(PinName sda, PinName scl, int address, int freq) : i2c(sda,scl) {
+    i2c.frequency(freq);
+    memadd = address;
+}
+
+void I2CEEPROM::write(int bank, unsigned short address, const char *data, int count) {
+    char *bytes = new char[count+3];
+    bytes[0] = 0xa1 | (bank << 3);
+    bytes[1] = address >> 8;
+    bytes[2] = address & 0xff;
+    for(int i = 0; i < count; i++) bytes[i + 3]=data[i];
+    i2c.start();
+    i2c.write(memadd, bytes, count + 3);
+    delete bytes;
+}
+
+void I2CEEPROM::read(int bank, unsigned short address, char *data, int count) {
+    char *info = new char[3];
+    info[0] = 0xa1 | (bank << 3);
+    info[1] = address >> 8;
+    info[2] = address & 0xff;
+    i2c.start();
+    i2c.write(memadd, info, count + 3);
+    for(int i = 0; i < count; i++) data[i]=i2c.read(i < (count - 1));
+    delete info;
+}
\ No newline at end of file

diff -r 000000000000 -r b8909823d506 I2CEEPROM.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/I2CEEPROM.h	Sun Dec 28 04:02:46 2014 +0000
@@ -0,0 +1,13 @@
+#pragma once
+#include "mbed.h"
+
+class I2CEEPROM {
+    public:
+    I2CEEPROM(PinName sda,PinName scl,int address, int freq=400000);
+    void write(int bank, unsigned short address, const char *data, int count);
+    void read(int bank, unsigned short address, char *data, int count);
+    
+    private:
+    I2C i2c;
+    int memadd;
+};