Flash 读写.doc

Flash 读写load程序负责把从0x20000处开始的4k程序（即led程序）拷到ram 0xc000000中，run函数把pc指到0x0c000000,开始执行led程序：void (*Run)(void) = (void (*)(void)RAM_ADDR;void Main(void)INT32U k ;INT32U *pulSource = (INT32U*)0x2000,;INT32U *pulDest = (INT32U*)0x0c000000;rSYSCFG=CACHECFG;PortInit();for(k=0;k *pulDest+ = *pulSource+;Run();led程序把两个通用io上连的led作不断的亮和灭：void Main(void)INT32U k ;/INT16U *ptr;rSYSCFG=CACHECFG;PortInit();while(1)LedDisp(0);for(k=0;k LedDisp(3);for(k=0;k 最后是烧写的程序，详细的代码网上高手们写了不少，我只是给出最简单的实现。烧写时当程序执行到清理完0X0C30_0000到0X0C30_4000的RAM后，让程序中断下来，通过LOAD MEMORY FORM FILE命令把LOAD.BIN导入0X0C30_0000，LED.BIN导入0X0C30_2000中，继续运行程序直到一个LED亮起，烧写就完成了。拔去仿真器后再上电，可以看到两个LED同时亮灭。i nclude option.hi nclude 44b.hi nclude def.h/i nclude romdef.h/i nclude stdio.h/i nclude stdlib.h #define FLASH_START_ADDR0X0000#define FLASH_ADDR_UNLOCK10X5555#define FLASH_ADDR_UNLOCK20X2AAA#define FLASH_DATA_UNLOCK10XAAAA#define FLASH_DATA_UNLOCK20X5555#define FLASH_DATA_WRITE0XA0A0#define FLASH_ERASE 0X8080#define FLASH_ERASE_SECTOR0X3030#define FLASH_ERASE_BLOCK 0X5050#define FLASH_ERASE_CHIP0X1010#define FLASH_SID_QUERY 0X9090#define FLASH_CFI_QUERY 0X9898#define FLASH_SID_EXIT0XF0F0#define FLASH_OP_TIMEOUT0Xffff #define LED_PORTC10 (1 #define LED_PORTC11(1 #define RAM_ADDR 0xc000000void (*Run)(void) = (void (*)(void)RAM_ADDR;void infoFlash(void);int wait_flash_ready ( INT16U *address, INT16U data );int writeFlash(INT16U *Address,INT16U Data);int eraseSector(INT16U* SectorAddr);int eraseChip(void); void PortInit(void);void LedDisp(int LedStatus); /*/FLASH WIRTING/*void Main(void)INT32U k ;INT16U *pdist,*psrc;rSYSCFG=CACHECFG;PortInit();/infoFlash();eraseChip();psrc=/blog/(INT16U *)0xc300000;for(k=0;k*psrc+=0x0; /clear rampsrc=/blog/(INT16U *)0xc300000;pdist=(INT16U *)0x0;for(k=0;k writeFlash(pdist+,*psrc+);while(1)LedDisp(0);for(k=0;k LedDisp(2);for(k=0;k /*/init the port/*void PortInit(void) rPDATC = 0xffff;/All IO is highrPCONC = 0x0f55ff54;rPUPC= 0x3000;/PULL UP RESISTOR should be enabled to I/O /*/light led/*void LedDisp(int LedStatus)if(LedStatus&0x01)=0x01)rPDATC &= (LED_PORTC10);/LED ONelserPDATC |= LED_PORTC10;/LED OFFif(LedStatus&0x02)=0x02)rPDATC &=(LED_PORTC11);/LED ONelserPDATC |=LED_PORTC11;/LED OFF /*/show the flash soft id/*void infoFlash()int i,j;INT16U *pFlash;*(volatile INT16U *)FLASH_START_ADDR)=FLASH_SID_EXIT;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK1)=FLASH_DATA_UNLOCK1;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK2)=FLASH_DATA_UNLOCK2;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK1)=FLASH_SID_QUERY; for(i=0;i pFlash=FLASH_START_ADDR;i=0;j=0;i=(INT16U)*pFlash+;j=(INT16U)*pFlash; /*/erase hold flash/*int eraseChip()*(volatile INT16U *)FLASH_START_ADDR)=FLASH_SID_EXIT;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK1)=FLASH_DATA_UNLOCK1;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK2)=FLASH_DATA_UNLOCK2;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK1)=FLASH_ERASE; *(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK1)=FLASH_DATA_UNLOCK1;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK2)=FLASH_DATA_UNLOCK2;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK1)=FLASH_ERASE_CHIP;if( wait_flash_ready(INT16U *)FLASH_START_ADDR,0xffff) )return 1;else return 0; /*/write one falsh word( 16bit)/*int writeFlash(INT16U *Address,INT16U Data) *(volatile INT16U *)FLASH_START_ADDR)=FLASH_SID_EXIT;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK1)=FLASH_DATA_UNLOCK1;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK2)=FLASH_DATA_UNLOCK2;*(volatile INT16U *)FLASH_START_ADDR+FLASH_ADDR_UNLOCK1)=FLASH_DATA_WRITE; *Address=Data;if(wait_flash_ready(Address,Data)return 1;else return 0; /*/wait for o