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FLASH的擦除中断

各位大侠:我读了一个TI 的软件,是写FLASH 的,我想问的是 FCTL1 = FWKEY + ERASE + EEI 中使能 EEI 擦除中断的意义?没看到有中断响应程序,也不知道中断的入口地址,所以不懂设中断的意义,谢谢指点!

.void write_SegD(char value)
{
  char *Flash_ptr;                          // Flash pointer
  unsigned int i;

  Flash_ptr = (char *)0x1000;               // Initialize Flash pointer
  FCTL3 = FWKEY;                            // Clear Lock bit
  FCTL1 = FWKEY + ERASE + EEI;              // Set Erase bit, allow interrupts???????
  *Flash_ptr = 0;                           // Dummy write to erase Flash seg

  FCTL1 = FWKEY + WRT;                      // Set WRT bit for write operation

  for (i = 0; i < 64; i++)
  {
    *Flash_ptr++ = value;                   // Write value to flash
  }

  FCTL1 = FWKEY;                            // Clear WRT bit
  FCTL3 = FWKEY + LOCK;                     // Set LOCK bit
}

这个问题驼鸟蝈蝈回答过,但我觉的他回答的不对,他说“这个不是flash擦除的中断,而是其他的中断”,手册上描述EEI位如下:

EEI Bits 3 Enable Erase Interrupts. Setting this bit allows a segment erase to be interrupted by an interrupt request. After the interrupt is serviced the erase cycle is resumed.           

                     0 Interrupts during segment erase disabled.

                     1 Interrupts during segment erase enabled.

 

Peter_Zheng:

When EEIEX = 1 and GIE = 1, an interrupt will immediately abort any flash operation and the FAIL flag will

be set. 这是对其他中断的快速响应

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