DSP用的是TI的5509A，FLASH芯片为AM29LV800B，连上CCS3.3，单步运行到擦除函数，发现只有奇地址变了，而且不是FFFF，是0010。写数据的时候也是只能写入奇地址，欧地址根本写不进。以下是我部分代码和CCS图
- /*FLASH写命令操作*/
- void FLASH_write_byte(unsigned int offset, unsigned int data)
- {
- *((volatile unsigned int*)(CE1+offset))=data;
- }
- /*FLASH擦除函数*/
- void erase_FLASH()
- {
- FLASH_write_byte(0x0555,0xaa);
- FLASH_write_byte(0x2aa,0x55);
- FLASH_write_byte(0x0555,0x80);
- FLASH_write_byte(0x0555,0xaa);
- FLASH_write_byte(0x02aa,0x55);
- FLASH_write_byte(0x0555,0x10);
- delay(100);
- }
- /*FLASH写数据初始化*/
- void FLASH_write_initial()
- {
- FLASH_write_byte(0x0555,0xaa);
- FLASH_write_byte(0x02aa,0x55);
- FLASH_write_byte(0x0555,0xa0);
- }
- /*FLASH写数据*/
- void FLASH_write(unsigned int write_addr,unsigned int data)
- {
- // FLASH_write_byte(write_addr,0xa0);
- FLASH_write_byte(write_addr,data);
- delay(10000);
- }
- main()
- {
- int i;
- /*初始化CSL库*/
- CSL_init();
-
- /*EMIF为全EMIF接口*/
- CHIP_RSET(XBSR,0x0a01);
-
- /*设置系统的运行速度为144MHz*/
- PLL_config(&myConfig);
- flash=0;
- erase_FLASH();
- FLASH_write_initial();
- fwaddr=CE1;
- fwaddr+=1000;
- for(i=1000;i<2000;i++)
- {
- FLASH_write(fwaddr+i,i);
- }
-
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