请教各位
小生觉得PIC18F6520的内部EEPROM写操作流程有问题,手册给出的如下
MOVLW DATA_EE_ADDRH ;
MOVWF EEADRH ; Upper bits of Data Memory Address to write
MOVLW DATA_EE_ADDR ;
MOVWF EEADR ; Lower bits of Data Memory Address to write
MOVLW DATA_EE_DATA ;
MOVWF EEDATA ; Data Memory Value to write
BCF EECON1, EEPGD ; Point to DATA memory
BCF EECON1, CFGS ; Access EEPROM
BSF EECON1, WREN ; Enable writes
BCF INTCON, GIE ; Disable Interrupts
MOVLW 55h ;
Required MOVWF EECON2 ; Write 55h
Sequence MOVLW AAh ;
MOVWF EECON2 ; Write AAh
BSF EECON1, WR ; Set WR bit to begin write
BSF INTCON, GIE ; Enable Interrupts 倘若在这个地方没有写完而产生中断回不回有问题
; User code execution
BCF EECON1, WREN ; Disable writes on write complete (EEIF set)
2:还有读需要关闭中断吗 |
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