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comparison code_part1/OSTC_code_asm_part1/menu_reset.asm @ 384:904863f96582 64kByte Logbook

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Work-Around for "Reset all" overwriting 0x00 to 0x04 in EEPROM Bank1
author heinrichsweikamp
date Sat, 18 Jun 2011 11:26:22 +0200
parents 6ee9c849ad92
children 8e272339fb68
comparison
equal deleted inserted replaced
383:d7a70654d968 384:904863f96582
449 bra reset_eeprom_value ; Second pair, cleared 449 bra reset_eeprom_value ; Second pair, cleared
450 450
451 ; Write the two bytes lo:hi into EEPROM 451 ; Write the two bytes lo:hi into EEPROM
452 reset_eeprom_value: 452 reset_eeprom_value:
453 incf EEADR,F 453 incf EEADR,F
454 movff lo, EEDATA ; Lowbyte Defaul value 454 movff lo, EEDATA ; Lowbyte Default value
455 call write_eeprom 455
456 movlw d'127' ; Work-around to prevent writing at EEPROM 0x00 to 0x04
457 cpfslt EEADR ; EEADR > 127?
458 call write_eeprom ; Yes, write!
456 459
457 incf EEADR,F 460 incf EEADR,F
458 movff hi, EEDATA ; Highbyte default value 461 movff hi, EEDATA ; Highbyte default value
459 goto write_eeprom 462
463 movlw d'127' ; Work-around to prevent writing at EEPROM 0x00 to 0x04
464 cpfslt EEADR ; EEADR > 127?
465 call write_eeprom ; Yes, write!
466 return
460 467
461 reset_external_eeprom: ; deletes complete external eeprom! 468 reset_external_eeprom: ; deletes complete external eeprom!
462 clrf eeprom_address+0 469 clrf eeprom_address+0
463 clrf eeprom_address+1 470 clrf eeprom_address+1
464 471