PARK JAICHANG
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W25Q64FVSSIG
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W25Q64FVSSIG
by 
Dimiter K
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W25Q64FV.cpp
00001 #include "W25Q64FV.h" 00002 00003 W25Q64FV::W25Q64FV(PinName mosi, PinName miso, PinName sclk, PinName cs, int frequency) 00004 { 00005 00006 this->cs = new DigitalOut(cs); 00007 this->cs->write(true); 00008 this->frequency = frequency; 00009 00010 spi = new SPI(mosi, miso, sclk); 00011 spi->format(8, 0); 00012 spi->frequency(frequency); 00013 } 00014 00015 W25Q64FV::~W25Q64FV() 00016 { 00017 delete spi; 00018 delete cs; 00019 } 00020 00021 uint16_t W25Q64FV::Id() 00022 { 00023 cs->write(0); 00024 spi->write(CMD_MANU_ID); 00025 spi->write(0); 00026 spi->write(0); 00027 spi->write(0); 00028 unsigned id = (spi->write(0) << 8) | spi->write(0); 00029 cs->write(1); 00030 return id; 00031 } 00032 00033 void W25Q64FV::W25Q64_readManufacturer(uint8_t* d) { 00034 00035 cs -> write(0); 00036 spi->write(CMD_MANU_ID); 00037 for (uint8_t i =0; i <5; i++) { 00038 d[i] = spi->write(0); 00039 } 00040 cs -> write(1); 00041 } 00042 00043 uint32_t W25Q64FV::JEDECId() 00044 { 00045 cs->write(0); 00046 spi->write(CMD_JEDEC_ID); 00047 unsigned id = (spi->write(0) << 16) | (spi->write(0) << 8) | spi->write(0); 00048 cs->write(1); 00049 return id; 00050 } 00051 00052 void W25Q64FV::writeEnable(void) 00053 { 00054 cs->write(0); 00055 spi->write(CMD_WREN); 00056 cs->write(1); 00057 } 00058 00059 void W25Q64FV::writeDisable(void) 00060 { 00061 cs->write(0); 00062 spi->write(CMD_WR_DISABLE) ; 00063 cs->write(1); 00064 } 00065 00066 uint8_t W25Q64FV::readStatus(void) 00067 { 00068 uint8_t data ; 00069 cs->write(0); 00070 spi->write(CMD_RDSR1) ; 00071 data = spi->write(DUMMY) ; // dummy 00072 cs->write(1); 00073 return( data ) ; 00074 } 00075 00076 void W25Q64FV::writeStatusReg(int addr) // Write SR cmd 01h + 3B data 00077 { 00078 cs->write(0); 00079 spi->write(CMD_WRSR1) ; // Write SR cmd 01h 00080 spi->write((addr >> 16)&0xFF) ; // address 00081 spi->write((addr >> 8)&0xFF) ; 00082 spi->write(addr & 0xFF) ; 00083 cs->write(1); 00084 } 00085 00086 void W25Q64FV::writeSecurityReg(int addr) // WRSCUR cmd 2Fh + 1B data 00087 { 00088 cs->write(0); 00089 // spi->write(CMD_WRSCUR) ; // Write SR cmd 01h 00090 spi->write(addr & 0xFF) ; 00091 cs->write(1); 00092 } 00093 00094 00095 uint8_t W25Q64FV::readByte(int addr) // Single Byte Read 00096 { 00097 uint8_t data ; 00098 cs->write(0); 00099 spi->write(CMD_READ_DATA) ; // send 03h 00100 spi->write((addr >> 16)&0xFF) ; 00101 spi->write((addr >> 8)&0xFF) ; 00102 spi->write(addr & 0xFF) ; 00103 data = spi->write(DUMMY) ; // write data is dummy 00104 cs->write(1); 00105 return( data ) ; // return 1 byte 00106 } 00107 00108 bool W25Q64FV::read(uint32_t addr, uint8_t* dst, uint32_t len) 00109 { 00110 cs->write(0); 00111 spi->write(0x03); 00112 spi->write((addr >> 16) & 0xff); 00113 spi->write((addr >> 8) & 0xff); 00114 spi->write(addr & 0xff); 00115 for (uint32_t i=0; i<len; ++i) 00116 dst[i] = spi->write(0); 00117 cs->write(1); 00118 00119 return true; 00120 } 00121 00122 void W25Q64FV::hsread(uint32_t addr, uint8_t* dst, uint32_t len, int frequency) 00123 { 00124 int save_frequency = this->frequency; 00125 spi->frequency(frequency); 00126 cs->write(0); 00127 spi->write(0x0B); 00128 spi->write((addr >> 16) & 0xff); 00129 spi->write((addr >> 8) & 0xff); 00130 spi->write(addr & 0xff); 00131 spi->write(0); // dummy 00132 for (uint32_t i=0; i<len; ++i) 00133 dst[i] = spi->write(0); 00134 cs->write(1); 00135 spi->frequency(save_frequency); 00136 } 00137 00138 uint8_t W25Q64FV::readSFDP(int addr) // Read SFDP 00139 { 00140 uint8_t data ; 00141 cs->write(0); 00142 spi->write(CMD_READ_SFDP) ; // send cmd 5Ah 00143 spi->write((addr >> 16)&0xFF) ; // address[23:16] 00144 spi->write((addr >> 8)&0xFF) ; // address[15:8] 00145 spi->write(addr & 0xFF) ; // address[7:0] 00146 spi->write(DUMMY) ; // dummy cycle 00147 data = spi->write(DUMMY) ; // return 1 byte 00148 cs->write(1); 00149 return( data ) ; 00150 } 00151 00152 uint8_t W25Q64FV::wait_while_busy(void) 00153 { 00154 uint8_t temp = 0; 00155 cs->write(0); //Enable device 00156 spi->write(CMD_RDSR1); //Send RDSR command 00157 temp = spi->write(DUMMY); 00158 cs->write(1); //Disable 00159 if (temp & 0x01) return 1; 00160 else return 0; 00161 } 00162 00163 00164 bool W25Q64FV::page_program(uint32_t addr, uint8_t* write_buffer, uint8_t len) 00165 { 00166 // no point in writing FF as an empty sector already has those 00167 // (and if not empty, write won't succeed) 00168 bool skipped = false; 00169 while (len > 0 && *write_buffer == 0xFF) 00170 { 00171 ++write_buffer; 00172 --len; 00173 ++addr; 00174 skipped = true; 00175 } 00176 if (len == 0 && skipped) 00177 return true; // special case when succeeds when nothing to do 00178 00179 if (len < 1 || len > 256) 00180 return false; 00181 00182 // write enable 00183 writeEnable(); 00184 00185 cs->write(0); 00186 spi->write(0x02); 00187 spi->write((uint8_t)(addr >> 16)); 00188 spi->write((uint8_t)(addr >> 8)); 00189 spi->write((uint8_t)addr); 00190 for (uint16_t i=0; i<len; ++i) 00191 spi->write(write_buffer[i]); 00192 cs->write(1); 00193 wait_while_busy(); 00194 00195 return true; 00196 } 00197 00198 void W25Q64FV::sector_erase_4k(uint32_t addr) 00199 { 00200 cs->write(0); 00201 spi->write(CMD_ERASE_SECTOR); 00202 spi->write((uint8_t)(addr >> 16)); 00203 spi->write((uint8_t)(addr >> 8)); 00204 spi->write((uint8_t)addr); 00205 cs->write(1); 00206 wait_while_busy(); 00207 } 00208 00209 void W25Q64FV::block_erase_32k(uint32_t addr) 00210 { 00211 cs->write(0); 00212 spi->write(CMD_ERASE_BLOCK32); 00213 spi->write((uint8_t)(addr >> 16)); 00214 spi->write((uint8_t)(addr >> 8)); 00215 spi->write((uint8_t)addr); 00216 cs->write(1); 00217 wait_while_busy(); 00218 } 00219 00220 void W25Q64FV::block_erase_64k(uint32_t addr) 00221 { 00222 cs->write(0); 00223 spi->write(CMD_ERASE_BLOCK64); 00224 spi->write((uint8_t)(addr >> 16)); 00225 spi->write((uint8_t)(addr >> 8)); 00226 spi->write((uint8_t)addr); 00227 cs->write(1); 00228 wait_while_busy(); 00229 } 00230 00231 void W25Q64FV::chip_erase() 00232 { 00233 cs->write(0); 00234 spi->write(CMD_ERASE_CHIP); 00235 cs->write(1); 00236 wait_while_busy(); 00237 } 00238 00239 00240 00241 00242 00243 00244 void W25Q64FV::writeArray(uint32_t address, uint8_t* pData, uint32_t arrayLength) 00245 { 00246 unsigned int i = 0; 00247 cs->write(0); //Enable device 00248 spi->write(CMD_WREN); //Send WREN command 00249 cs->write(1); //Disable device 00250 00251 cs->write(0); //Enable device 00252 spi->write(CMD_PAGEPROG); //Send Byte Program command 00253 spi->write((uint8_t)(address >> 16) & 0xFF); 00254 spi->write((uint8_t)(address >> 8) & 0xFF); 00255 spi->write(0x00); 00256 00257 for (i=0;i<arrayLength;i++) 00258 { 00259 spi->write(pData[i]); //Send byte to be programmed 00260 } 00261 cs->write(1); //Disable device 00262 00263 //Wait Busy 00264 while ((readStatus() & 0x01) == 0x01) //Waste time until not busy 00265 { 00266 } 00267 } 00268 00269 00270 void W25Q64FV::readArray(uint32_t address, uint8_t* pData, uint32_t arrayLength) 00271 { 00272 unsigned int i = 0; 00273 00274 cs->write(0); //Enable device 00275 spi->write(CMD_READ_DATA); //Read command 00276 spi->write((uint8_t)(address >> 16)); 00277 spi->write((uint8_t)(address >> 8)); 00278 spi->write((uint8_t) address); 00279 00280 for (i = 0; i <arrayLength; i++) //Read until no_bytes is reached 00281 { 00282 pData[i] = spi->write(DUMMY); //Receive bytes 00283 } 00284 cs->write(1); //Disable device 00285 00286 //Wait Busy 00287 while (readStatus() & 0x01) //Waste time until not busy 00288 { 00289 } 00290 } 00291 00292 00293
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