SST_SST25VF016B.rar_SST25VF016B_pic flash_pic单片机flash_sst25vf pi

#include <P24FJ128GA006.H> #include <stdio.h> #include <string.h> #include "commuse.h" #include "lcd.h" #include "timer.h" #include "ecg.h" #include "bmp.h" #include "clock.h" #include "system.h" #include "key.h" #include "menu.h" #include "hr.h" #include "FlashScreen.h" #include "uart.h" #include "flash.h" #include "ecganal.h" #define WAIT_TBF while(SPI2STAT&0x02) #define WAIT_RBF SPI2STATbits.SPIROV = 0; while(!(SPI2STAT&0x01)) #define CE_LOW LATCbits.LATC14 = 0 #define CE_HIG LATCbits.LATC14 = 1 #define CLK_LOW LATGbits.LATG6 = 0 #define CLK_HIG LATGbits.LATG6 = 1 #define SO_LOW LATGbits.LATG8 = 0 #define SO_HIG LATGbits.LATG8 = 1 //#define HOLD_LOW LATGbits.LATG9 = 0 //#define HOLD_HIG LATGbits.LATG9 = 1 #define WEL_ON 0x02 #define BUSY_ON 0x01 #define JEDEC_ID 0x9F #define SST_FLASH_ID 0x90 #define SST_RDSR 0x05 #define SST_WREN 0x06 #define SST_EWSR 0x50 #define SST_WRSR 0x01 #define SST_ERASE 0x20 #define SST_WBYTE 0x02 #define SST_RBYTE 0x03 #define SST_HI_RBYTE 0x0B #define WRITE_NULL 0xff unsigned char Index_count[2]; unsigned char DataChange; volatile MSGData gDataMsg; unsigned char SPI_in_buf; unsigned char Record_index_old ; volatile unsigned char Record_Info_Buf[16]; unsigned char Index_Info_Buf[MAX_Records+1]; volatile unsigned char useIndex[MAX_Records]; volatile unsigned char Record_count; volatile unsigned char Record_index; unsigned char Setup_Info_Buf[32]; unsigned long addr_point; void SPI_WREN(void); void SPI_EWSR(void); void SPI_JEDEC_ID(unsigned char *); unsigned char SPI_READ_ID (unsigned char); unsigned char SPI_READ_STATUS(void); unsigned char SPI_WRITE_BYTE(unsigned long,unsigned char); void SPI_HISPEED_READ(unsigned long,unsigned int,unsigned char *); void SPI_WRITE_STATUS(unsigned char); void init_spi2() { TRISG = 0xffff; TRISCbits.TRISC14 = 0; //CE TRISGbits.TRISG6 = 0; //SCK TRISGbits.TRISG8 = 0;//MOSI // TRISGbits.TRISG9 = 0;//HOLD CE_HIG; CLK_LOW; SO_HIG; // HOLD_HIG; SPI2CON1 = 0x0023;//1M SPI2CON2 = 0x0000; SPI2STAT = 0x8000; SPI_WREN(); delay_ms(10); SPI_EWSR(); delay_ms(10); SPI_WRITE_STATUS(0x02); delay_ms(10); } void SPI_JEDEC_ID(unsigned char *buf) { unsigned char cTemp; CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = JEDEC_ID; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = WRITE_NULL; WAIT_TBF; WAIT_RBF; buf[0] = SPI2BUF; SPI2BUF = WRITE_NULL; WAIT_TBF; WAIT_RBF; buf[1] = SPI2BUF; SPI2BUF = WRITE_NULL; WAIT_TBF; WAIT_RBF; buf[2] = SPI2BUF; CLK_HIG; CE_HIG; return ; } unsigned char SPI_READ_ID(unsigned char FLASHID) { unsigned char cTemp; CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = JEDEC_ID; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = 0x00; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = 0x00; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = FLASHID; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; CLK_HIG; CE_HIG; return cTemp; } unsigned char SPI_READ_STATUS(void) { unsigned char cTemp; CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = SST_RDSR; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = WRITE_NULL; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; CLK_HIG; CE_HIG; return cTemp; } void SPI_WREN(void) { unsigned char cTemp; CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = SST_WREN; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; CLK_HIG; CE_HIG; return ; } void SPI_EWSR(void) { unsigned char cTemp; CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = SST_EWSR; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; CLK_HIG; CE_HIG; return ; } void SPI_WRITE_STATUS(unsigned char inch) { unsigned char cTemp; CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = SST_WRSR; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = inch; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; CLK_HIG; CE_HIG; return ; } void Sector_Erase(unsigned long in) { unsigned long iAddr; unsigned char cTemp; if(in>255) { return; } iAddr = (unsigned long) in<<12; SPI_WREN(); cTemp = SPI_READ_STATUS(); if(!(cTemp&WEL_ON)) { return; } CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = SST_ERASE; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = (iAddr&0xffffff) >> 16; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = (iAddr&0xffff) >> 8; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = iAddr&0xff; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; CLK_HIG; CE_HIG; return ; } unsigned char SPI_WRITE_BYTE(unsigned long lAddr,unsigned char inch) { unsigned char cTemp; unsigned char NACK; SPI_WREN(); cTemp = SPI_READ_STATUS(); if(!(cTemp&WEL_ON)) { return 0; } NACK = 0xff; while(NACK--) { SPI_WREN(); cTemp =SPI_READ_STATUS(); if(!(cTemp&BUSY_ON)) { break; } else { delay_ms(1); } } if(!NACK) { return 0; } CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = SST_WBYTE; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = (lAddr&0xffffff) >> 16; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = (lAddr&0xffff) >> 8; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = lAddr&0xff; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = inch; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; CLK_HIG; CE_HIG; return 1; } unsigned char SPI_READ_BYTE(unsigned long lAddr) { unsigned char cTemp; CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = SST_RBYTE; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = (lAddr&0xffffff) >> 16; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = (lAddr&0xffff) >> 8; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = lAddr&0xff; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = WRITE_NULL; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; CLK_HIG; CE_HIG; return cTemp; } void SPI_HISPEED_READ(unsigned long lAddr,unsigned int leng,unsigned char *buf) { unsigned char cTemp; unsigned int loop; CE_LOW; CLK_LOW; WAIT_TBF; SPI2BUF = SST_RBYTE; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = (lAddr&0xffffff) >> 16; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = (lAddr&0xffff) >> 8; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; SPI2BUF = lAddr&0xff; WAIT_TBF; WAIT_RBF; cTemp = SPI2BUF; for(loop = 0; loop <leng;loop++) { SPI2BUF = WRITE_NULL; WAIT_TBF; WAIT_RBF; buf[loop] = SPI2BUF; } CLK_HIG; CE_HIG; return ; }