Diff: EEPROM_AT93C46.h

Revision:

0:9cc1d5ebe758

Child:

1:c846ecbfe067

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EEPROM_AT93C46.h	Fri May 09 02:17:12 2014 +0000
@@ -0,0 +1,80 @@
+#ifndef MBED_EEPROM_AT93C46_H
+#define MBED_EEPROM_AT93C46_H
+ 
+#include "mbed.h"
+/** @file
+ * AT93C46A x16 mode(7pin OC mean NC ,maybe)
+ * AT93C46E x16 mode(7pin NC)
+ * AT93C46D x16 mode(7pin ORG,H=x16,L=x8)
+ * Cap=1Kbits 64words @ x16
+ * SB(start bit)=1bit OP-code=2bits Addr=6bits(64word)
+ * controll use gpib port(Outoutx3,Inputx1)
+ */
+
+/** @def
+ * Command code define
+ * 
+ */
+#define EE_READ  0x80   // 10 xxxxxx(A5-A0)
+#define EE_WRITE 0x40   // 01 xxxxxx(A5-A0)
+#define EE_EWEN  0x3F   // 00 11XXXX(X is DONT CARE)
+#define EE_EWDS  0x00   // 00 00XXXX(X is DONT CARE)
+#define EE_ERASE 0xC0   // 11 xxxxxx(A5-A0)
+
+class EEPROM_AT93C46 {
+    public:
+
+  /** Create a EEPROM_AT93C46 object connected to four pins
+   *
+   * @param eccs pin connected to CS of AT93C46
+   * @param eeck pin connected to CLK of AT93C46
+   * @param eedi pin connected to DI of AT93C46 
+   * @param eedo pin connected to DO of AT93C46
+   */ 
+    EEPROM_AT93C46(PinName eecs,PinName eeck,PinName eedi,PinName eedo);
+
+/** data=8bit
+ * I send to AT93C46 with 9bit data(start bit added )
+ * bit send with wait_us(1),so 
+ * @param Sending data to AT93C46
+ */
+    void send(char data);
+
+/** Data read ftom AT93C46
+ * send( OP-code|addr )
+ * @param address(6bit)
+ */
+    unsigned short read(char addr);
+
+/** Data read ftom AT93C46
+ * send( OP-code|addr )
+ * @param address(6bit)
+ * @ret data( unsigned short 1 word )
+ */
+    void write_enable();
+/** Do write-enable to AT93C46
+ * send( OP-code )
+ * @param address(6bit)
+ */
+    void write_disable();
+/** Do write-disable to AT93C46
+ * send( OP-code )
+ * @param address(6bit)
+ */
+    void erase(char addr);
+
+/** Data erase to AT93C46
+ * send( OP-code|addr )
+ * @param address(6bit) , write data(16bit=short)
+ */
+    void write(char addr,unsigned short data);
+    
+    private:
+    DigitalOut _eecs; //AT93C46 CS ,active H
+    DigitalOut _eeck; //AT93C46 CLK,rise-edge is write,fall-edge is read
+    DigitalOut _eedi; //AT93C46 DataIn (mbed is output)
+    DigitalIn  _eedo; //AT93C46 DataOut(mbed is input)
+};
+#endif
+
+