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