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???
04/10/10 16:51
Modified:
  04/10/10 17:07

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#174960 - the problem is in the EECON SFR, just what in it?
Responding to: ???'s previous message
I am pretty sure the fault is in the EECON SFR, because when I made a software that just toggles EEPROM on and off while displaying "checkpoint" message on the LCD.

	lcd_display("Starting",0,0); //Start Checkark
	EPROM_Normal();
	lcd_display("EEPROM ON",0,0); //Enable EEPROM Checkmark
	EPROM_Shutdown();
	lcd_display("EEPROM OFF",1,0); //Disable EEPROM Checkmark, display on line 2

 


only the Starting and EEPROM OFF messages were displayed, the EEPROM ON was completely. the only think that seem to happen was a delay between the "Starting" and "EEPROM OFF" messages (~around 3 seconds delay)

heres the EPROM functions for refrence:
void EPROM_Normal()
{
EECON=0x02;	//Allow usage of EPROM
//AUXR=0x0C;	//Restore normal R/W Cycles						  
}

void EPROM_Shutdown()
{
EECON=0x00;	//Allow usage of EPROM
//AUXR=0x0C;	//Restore normal R/W Cycles						  
}
 


as you see, I commented out the AUXR to rule him out, leaving just EECON as problem source.

can someone please help me out this I really need to finish this project by Wednesday.

heres the image of the EECON SFR:



and heres the AUXR SFR:



and the Datasheet + additional information is still on the Original post.

EDIT:

p.s. it seems I mistakenly posted this in the wrong section, can anyone please move this thread to the 8052forum?

List of 5 messages in thread
TopicAuthorDate
EEPROM Stuck            01/01/70 00:00      
   I do not know about Atmel, and ...            01/01/70 00:00      
      the problem is in the EECON SFR, just what in it?            01/01/70 00:00      
   EECON Initiate programming            01/01/70 00:00      
      to Joseph Hebert            01/01/70 00:00      

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