// W25Q128FV 16 MByte-os FLASH memoria kezelése szoftveres SPI -vel. // ( részletek ) //COMMANDS #define W_EN 0x06 //write enable #define W_DE 0x04 //write disable #define R_SR1 0x05 //read status reg 1 #define R_SR2 0x35 //read status reg 2 #define R_SR3 0x15 //read status reg 3 #define W_SR1 0x01 //write status reg 1 #define W_SR2 0x31 //write status reg 2 #define W_SR3 0x11 //write status reg 3 #define PAGE_PGM 0x02 //page program #define QPAGE_PGM 0x32 //quad input page program #define BLK_E_64K 0xD8 //block erase 64KB #define BLK_E_32K 0x52 //block erase 32KB #define SECTOR_E 0x20 //sector erase 4KB #define CHIP_ERASE 0xc7 //chip erase #define CHIP_ERASE2 0x60 //=CHIP_ERASE #define E_SUSPEND 0x75 //erase suspend #define E_RESUME 0x7a //erase resume #define PDWN 0xb9 //power down #define HIGH_PERF_M 0xa3 //high performance mode #define CONT_R_RST 0xff //continuous read mode reset #define RELEASE 0xab //release power down or HPM/Dev ID (deprecated) #define R_MANUF_ID 0x90 //read Manufacturer and Dev ID (deprecated) #define R_UNIQUE_ID 0x4b //read unique ID (suggested) #define R_JEDEC_ID 0x9f //read JEDEC ID = Manuf+ID (suggested) #define READ 0x03 #define FAST_READ 0x0b #define GLOBAL_UNLOCK 0x98 //Global Block/Sector Unlock #define GLOBAL_LOCK 0x7E //Global Block/Sector Lock #define SR1_BUSY_MASK 0x01 #define SR1_WEN_MASK 0x02 #define WINBOND_MANUF 0xef #define DEFAULT_TIMEOUT 200 // #define select() CS = 0 #define deselect() CS = 1 void EFlashTest(void){ unsigned int i; unsigned char bf[256]; unsigned char x; unsigned int w; unsigned long int ww; // wake_up(); Nop(); ww = readSR(); Nop(); SetCMPState(0); ww = readSR(); Nop(); Nop(); setWEL(W_EN); SetCMPState(0); ww = readSR(); Nop(); Nop(); ww = readSR(); Nop(); Nop(); w = readPartID(); Nop(); Nop(); x = readManufacturer(); // if(!SetFlashProtect(FLASH_UNPROTECT)) return; // error Nop(); Nop(); ww = readSR(); Nop(); Nop(); //eraseSector(0,4096); GlobalUnlock(); Nop(); //SetCMPState(1); Nop(); ww = readSR(); Nop(); Nop(); // for(i=0;i<=255;i++) bf[i] = i; w = write(512,(uint8_t *)&bf[0],10); // WRITE Nop(); Nop(); Nop(); Nop(); Nop(); Nop(); ww = readSR(); Nop(); Nop(); // for(i=0;i<=255;i++) // törlés bf[i] = 0; w = read (512,(uint8_t *)&bf[0],10); // READF Nop(); Nop(); ww = readSR(); Nop(); Nop(); Nop(); power_down(); } // A FLASH a CLK LH élnél olvassa be a biteket, // és a HL élnél küldi ki a biteket. // SCK = 0 alaphelyzet !! // KÜLDÉS : 7.bit elöször // OLVASÁS : 7.bit jön elöször /* INPUT : x - ezt küldi ki OUTPUT : - beolvasott byte */ static unsigned char transfer(unsigned char x){ unsigned char cnt, i, iv, b; // iv = 1; SCK = 0; cnt = 8; while(cnt--){ // vátel b = SDI; // ADÁS if(x & 128) SDO = 1; // 7.bit kiküldi else SDO = 0; SCK = 1; // LH él, FLASH beolvassa a bitet x <<= 1; // //for(i=0;i1) return(0); // hibás állapot // LB1..3 = 0 beállitása ww = readSR(); r2 = (ww>>8); r2 &= 0b11000111; // 3..5 bitek = 0 lesz // setWEL(W_EN); select(); transfer(W_SR2); transfer(r2); deselect(); // PROTECT ON SetWPSState(0); SetCMPState(st); // állapot beállitás // return(1); } // STATUS reg READ /* OUTPUT : - word, Lo=STreg1, Hi=STreg2, HiHi=STreg3 */ uint32_t readSR(void) { uint8_t r1,r2,r3; uint32_t ww; // select(); transfer(R_SR1); r1 = transfer(0xff); deselect(); // deselect();//some delay select(); transfer(R_SR2); r2 = transfer(0xff); deselect(); // deselect();//some delay select(); transfer(R_SR3); r3 = transfer(0xff); deselect(); ww = r3; ww <<= 8; ww += r2; ww <<= 8; ww += r1; return (ww); } void SetCMPState(uint8_t state){ uint8_t r2; // Beolvassuk select(); transfer(R_SR2); r2 = transfer(0xFF); deselect(); // setWEL(W_EN); r2 &= 0b10111111; // 6.bit = 0 lesz if(state) r2 |= 64; // SET, ha kell // select(); transfer(W_SR2); transfer(r2); deselect(); } // Müvelet befejezésére vár megadott ideig, a BUSY-t nézi... /* INPUT : tmo - time out ms-ban */ uint8_t sync(uint16_t tmo) { uint8_t c; // WaitmsAsync(tmo); select(); transfer(R_SR1); do { c = transfer(0x00); if(!(c & SR1_BUSY_MASK)) //not busy { deselect(); return(1); } for(c=0;c<100;c++); // várakozás }while(GetEndAsyncWait()); // kilép ha lejárt a tmo deselect(); return false; } // Write Enable Latch /* INPUT: pk - W_EN/W_DE */ void setWEL(uint8_t pk) { unsigned long int ww; w_cmd = pk; // select(); transfer(w_cmd); deselect(); ww = readSR(); Nop(); Nop(); } // READ /* INPUT : addr - 3 byte-os cím *buf - mutato a beolvasott adatok mentési cimére n - méret OUTPUT : - beolvasott byteszám */ uint16_t read (uint32_t addr,uint8_t *buf,uint16_t n) { uint16_t i; // if(!sync(50)) return(0); // select(); transfer(READ); transfer(addr>>16); transfer(addr>>8); transfer(addr); for(i=0;i k ? k : n; // beirhato byteszám a lapra select(); transfer(PAGE_PGM); transfer((uint8_t)(addr>>16)); transfer((uint8_t)(addr>>8)); transfer((uint8_t)addr); for(i=0;i> 8; for(start_page=addr>>8;start_page>8); transfer(start_page); transfer(0x00); //bufp += i; for(j=0;j<=255;j++) transfer(bufp[i+j]); i+=256; deselect(); } // MARADÉK byte-ok beirása if(i < n) { if(!sync(50)) return i; setWEL(W_EN); ww = readSR(); select(); transfer(end_page>>8); transfer(end_page); transfer(0x00); //bufp += i; for(j=0;j<=n-i;j++) transfer(bufp[i+j]); deselect(); } return n; } /* INPUT : addr_start - szektor cime n - szektor mérete OUTPUT : - =1, ha sikeres volt */ uint8_t eraseSector(uint32_t addr_start,uint32_t n) { if(n==0) return false; if(n%4096) //test if n is 12bit-aligned return false; if(addr_start & 0x00000fff) //test if addr_start is 12bit-aligned return false; // setWEL(W_EN); select(); transfer(SECTOR_E); transfer(addr_start>>16); transfer(addr_start>>8); transfer(addr_start); deselect(); // return(1); } void GlobalUnlock(void){ if(!sync(2)) return; setWEL(W_EN); select(); transfer(GLOBAL_UNLOCK); deselect(); }