Diff: FeRAM.h

Revision:

0:f93930fa4df5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FeRAM.h	Thu Jan 19 16:51:29 2012 +0000
@@ -0,0 +1,51 @@
+/*  FeRAM Library
+*
+*   Martin Smith 2012
+*
+*   Working with FM25H20-DG 2 Mbit FeRAM IC
+*/
+
+#include "mbed.h"
+
+#ifndef  FERAM_H
+#define  FERAM_H
+
+// LCP1768 SSP regiester defines
+#define TNF         0x02    // Transmit buffer not full
+#define TFE         0x01    // Transmit buffer full
+#define RNE         0x04    // Receive buffer not empty
+#define p6_GPIO     0xFFFFCFFF  
+#define p14_GPIO    0xFFFFFFFC
+#define p6_SSEL     0x00002000
+#define p14_SSEL    0x00000002
+// FeRAM command defines
+#define WREN        0x06    // Write enable
+#define WRITE       0x02    // Write command
+#define READ        0x03    // Read command
+
+/*
+* Connections for IC:
+* chip pin 1 - Chip Select - mbed p8 / p14
+* chip pin 2 - MISO - mbed p6 / p12
+* chip pin 3 - Write Protect - mbed VOUT (p40)
+* chip pin 4 - VSS - mbed GND (p1)
+* chip pin 5 - MOSI - mbed p5 / p11
+* chip pin 6 - SCLK - mbed p7 / p13
+* chip pin 7 - Hold - mbed VOUT (p40)
+* chip pin 8 - VDD - mbed VOUT (p40)
+*/
+
+class FeRAM {
+public:
+    FeRAM(PinName mosi, PinName miso, PinName sclk);
+    void write_byte (int address, unsigned char data);
+    unsigned char read_byte (int address);
+    void write_multiple_bytes (int start_address, unsigned char* data, int length);
+    void read_multiple_bytes (int start_address, unsigned char* data, int length);
+private:
+    SPI _spi;
+    PinName _miso;
+    void spi_write_SSP0 (unsigned char data);
+    void spi_write_SSP1 (unsigned char data);
+};
+#endif
\ No newline at end of file