W25Q16BV.h

00001 // W25Q16BV.h
00002 
00003 #ifndef W25Q16BV_H
00004 #define W25Q16BV_H
00005 
00006 #include "mbed.h"
00007 //#include "BitBangedSPI.h"
00008 
00009 #define SPI_FREQ        1000000
00010 #define SPI_MODE        0
00011 #define SPI_NBIT        8
00012 
00013 #define POWERUP_INST    0xAB
00014 #define POWERDOWN_INST  0xB9
00015 #define STATUS1_INST    0x05
00016 #define STATUS2_INST    0x35
00017 #define JDEC_INST       0x9F
00018 #define UNIQUE_INST     0x4B
00019 #define WE_INST         0x06
00020 #define WD_INST         0x04
00021 #define R_INST          0x03
00022 #define W_INST          0x02
00023 #define S_ERASE_INST    0x20  /* 4KB sector erase */
00024 #define B_ERASE_INST    0xD8  /* 64KB block erase */
00025 #define C_ERASE_INST    0x60
00026 
00027 #define DUMMY_ADDR      0x00
00028 
00029 #define WAIT_US_TRES1          5   /* Power Up:                 3us */
00030 //#define WAIT_US_TPUW       10000   /* Power Up Write Time:   1-10ms */
00031 //#define WAIT_US_TBP           50   /* Byte Program Time:    20-50us */
00032 //#define WAIT_US_TPP         3000   /* Page Program Time:    0.7-3ms */
00033 //#define WAIT_US_TSE       400000   /* Sector Erase Time:   30-400ms */
00034 //#define WAIT_US_TBE      1000000   /* 64KB Block Erase Time: 1000ms */
00035 //#define WAIT_US_TCE     10000000   /* Chip Erase Time:       3-10s  */
00036 
00037 //#define ADDR_BMASK2     0x00ff0000
00038 //#define ADDR_BMASK1     0x0000ff00
00039 //#define ADDR_BMASK0     0x000000ff
00040 
00041 //#define ADDR_BSHIFT2    16
00042 //#define ADDR_BSHIFT1    8
00043 //#define ADDR_BSHIFT0    0
00044 
00045 #define PAGE_SIZE          256
00046 #define SECTOR_SIZE       4096
00047 #define NUM_SECTORS        512
00048 #define NUM_64KB_BLOCKS     32
00049 
00050 #define STATUS_1_BUSY     0x01
00051 
00052 class W25Q16BV /*: public BitBangedSPI*/ {
00053 public:
00054     W25Q16BV(PinName mosi, PinName miso, PinName sclk, PinName cs);
00055     
00056     int readByte(int addr);                                 // takes a 24-bit (3 bytes) address and returns the data (1 byte) at that location
00057     int readByte(int a2, int a1, int a0);                   // takes the address in 3 separate bytes A[23,16], A[15,8], A[7,0]
00058     void readStream(int addr, char* buf, int count);        // takes a 24-bit address, reads count bytes, and stores results in buf
00059 
00060     void readJEDEC(uint8_t* manId, uint8_t* memType, uint8_t* cap);
00061     uint8_t readStatus1();
00062     uint8_t readStatus2();
00063     
00064     void writeByte(int addr, int data);                     // takes a 24-bit (3 bytes) address and a byte of data to write at that location
00065     void writeByte(int a2, int a1, int a0, int data);       // takes the address in 3 separate bytes A[23,16], A[15,8], A[7,0]
00066     void writeStream(int addr, char* buf, int count);       // write count bytes of data from buf to memory, starting at addr  
00067     
00068     void chipErase();                                       // erase all data on chip
00069     bool blockErase(int startBlock, int num=1);             // erase all data in the specified number of 64KB blocks, return false if block number is invalid
00070     bool sectorErase(int startSector, int num=1);           // erase all data in the specified number of  4KB sectors, return false if sector number is invalid
00071     
00072     void enterDeepPowerDown();
00073     
00074     void exitDeepPowerDown();
00075     
00076     
00077 private:
00078 
00079     void waitWhileBusy();
00080 
00081     void writeEnable();                                     // write enable
00082     void writeDisable();                                    // write disable
00083     void chipEnable();                                      // chip enable
00084     void chipDisable();                                     // chip disable
00085     
00086 //    BitBangedSPI _spi;
00087     SPI _spi;
00088     DigitalOut _cs;
00089 };
00090 
00091 #endif
00092