Diff: W25X40BV.h

Revision:

0:9de212faf980

Child:

1:cd41b8e3fdad

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/W25X40BV.h	Mon Mar 19 10:20:37 2012 +0000
@@ -0,0 +1,51 @@
+// W25X40BV.h
+
+#ifndef W25X40BV_H
+#define W25X40BV_H
+
+#include "mbed.h"
+
+#define SPI_FREQ        1000000
+#define SPI_MODE        0
+#define SPI_NBIT        8
+
+#define WE_INST         0x06
+#define WD_INST         0x04
+#define R_INST          0x03
+#define W_INST          0x02
+#define C_ERASE_INST    0x60
+
+#define DUMMY_ADDR      0x00
+#define WAIT_TIME       1
+
+#define ADDR_BMASK2     0x00ff0000
+#define ADDR_BMASK1     0x0000ff00
+#define ADDR_BMASK0     0x000000ff
+
+#define ADDR_BSHIFT2    16
+#define ADDR_BSHIFT1    8
+#define ADDR_BSHIFT0    0
+
+class W25X40BV {
+public:
+    W25X40BV(PinName mosi, PinName miso, PinName sclk, PinName cs);
+    
+    int read(int addr);                             // takes a 24-bit (3 bytes) address and returns the data (1 byte) at that location
+    int read(int a2, int a1, int a0);               // takes the address in 3 separate bytes A[23,16], A[15,8], A[7,0]
+    
+    void write(int addr, int data);                 // takes a 24-bit (3 bytes) address and a byte of data to write at that location
+    void write(int a2, int a1, int a0, int data);   // takes the address in 3 separate bytes A[23,16], A[15,8], A[7,0]
+    
+    void chipErase();                               // erase all data on chip
+    
+private:
+    void writeEnable();                             // write enable
+    void writeDisable();                            // write disable
+    void chipEnable();                              // chip enable
+    void chipDisable();                             // chip disable
+    
+    SPI _spi;
+    DigitalOut _cs;
+};
+
+#endif
\ No newline at end of file