89v51rd2 serial communication

[AMit]

89v51rd2 serial communication:

 

Hi all ..the lords of controller world .

 

I am trying to communicate from PC serial port to 89v51rd2 and have used the code provided in this site for serial communication..I have studdied about the timers and understood the code so used it as it is…thought  will modify it when this runs properly.It was wonderful it is running accurately but now i am not able to programm it again via Flash magic to which i used to programm it for first time.

 

can any one help me on this please the code is available on site I have note pasted it here bcause it may be restricted by site owners..

 

kindly help on this.

 

 

 

Thanks….!!!

 

amianch 

[dagakshay]

try to burn another ic, it might be some problem with your burner…..

what error is it showing….(if possible send the snapshots)…

[AMit]

Thanks for guidelines…i did as you said …tried another controller and programmed it sucessfully ..but this controller still running the same code of serial comm. and showing proper results .i.e if we press a –Aa appears on com port output.thats fine.But still cannot programme it again..???? does that programm have a bug or something which is preventing it from being programmed again…??? I didnt get it…….!!!

Pleease help

 

 

 

Thanks…!!!

 

amianch 

[AMit]

I dont know how it worked …the concept…but i tried this and it worked..

 

* I grounded the Tx ping while blank check and it went through.

 then I left Tx pin as it is (now not gorund) and programmed it and the controller got programmed.

 

Any ways thank for sujetion.

 

 

 

Amianch…!!! 

[dagakshay]

plz try to go through the concept and tell as aslo if you get that….

 

i mean while even i will try and let you know if i get it….

any ways from where you got that idea???

[Author]

Posts