S2568FBLL.h

00001 // S2568FBLL.h
00002 
00003 //Instruction Name Instruction Format           Hex
00004 //Code                Description
00005 //READ                  0000 0011               0x03            Read data from memory array beginning at selected address
00006 //WRITE                 0000 0010               0x02            Write data to memory array beginning at selected address
00007 //ESDI                  0011 1011               0x3B            Enter SDI mode
00008 //ESQI                  0011 1000               0x38            Enter SQI mode
00009 //RSTDQI                1111 1111               0xFF            Reset SDI/SQI mode
00010 //RDMR                  0000 0101               0x05            Read Mode Register
00011 //WRMR                  0000 0001               0x01            Write Mode Register
00012 
00013 #ifndef S2568FBLL_H
00014 #define S2568FBLL_H
00015 
00016 #include "mbed.h"
00017 #include <string>
00018 
00019 #define SPI_FREQ        5000000                 //Change SPI Frequency Here
00020 #define SPI_MODE        0                       // SPI Mode can be 0 or 3 . see data sheet
00021 #define SPI_NBIT        8                       // Number of bits 8.
00022 
00023 
00024 
00025 #define DUMMY_ADDR      0x00
00026 #define WAIT_TIME       1
00027 
00028 #define ADDR_BMASK3     0xff000000
00029 #define ADDR_BMASK2     0x00ff0000
00030 #define ADDR_BMASK1     0x0000ff00
00031 #define ADDR_BMASK0     0x000000ff
00032 
00033 #define ADDR_BSHIFT3    24
00034 #define ADDR_BSHIFT2    16
00035 #define ADDR_BSHIFT1    8
00036 #define ADDR_BSHIFT0    0
00037 
00038 #define READ            0x03           // Read data from memory array beginning at selected address
00039 #define WRITE           0x02           //Write data to memory array beginning at selected address
00040 #define ESDI            0x3B           //Enter SDI mode
00041 #define ESQI            0x38           //Enter SQI mode
00042 #define RSTDQI          0xFF           //Reset SDI/SQI mode
00043 #define RDMR            0x05           //Read Mode Register
00044 #define WRMR            0x01           //Write Mode Register
00045 
00046 #define RWMODE_BYTE      0x00              //7th bit=0 and 6th bit =0 Byte mode  5 TO 0 BITS ARE RESERVED FOR FUTURE
00047 #define RWMODE_PAGE      0x80              //        1              0 Page mode
00048 #define RWMODE_SEQ       0x40              //        0              1= Sequential mode (default operation)
00049 
00050        
00051 
00052 class S2568FBLL: public SPI {
00053 public:
00054     S2568FBLL(PinName mosi, PinName miso, PinName sclk, PinName cs,PinName hold);
00055     
00056     int readByte(int addr);                                 // takes a 24-bit (3 bytes) address and returns the data (1 byte) at that location                   
00057     void readStream(int addr, char* buf, int count);        // takes a 24-bit address, reads count bytes, and stores results in buf
00058     void writeByte(int addr, int data);                     // takes a 24-bit (3 bytes) address and a byte of data to write at that location
00059     void writeStream(int addr, char* buf, int count);       // write count bytes of data from buf to memory, starting at addr  
00060     void writeString(int add, string str);
00061     long raedLong(int addr);
00062     void writeLong(int addr, long value);
00063     uint8_t readRegister(void);                                                       // Write Long Integer Number
00064 private:
00065  
00066     void writeRegister(uint8_t regValue);
00067     void chipEnable();                                      // chip enable
00068     void chipDisable();  
00069     void holdEnable();
00070     void holdDisable();
00071                                                      // chip disable
00072     
00073    // SPI _spi;
00074     DigitalOut _cs;
00075     DigitalOut _hold;
00076 };
00077 
00078 #endif