In System Programming using Tx & Rx

(Using FlashMagic tool)

Circuit

http://www.ece.ubc.ca/~jesusc/P89V51RD2_System.jpg

Schematic

• Flash Magic is a PC tool for programming flash based microcontrollers from NXP using a serial or Ethernet protocol while in the target hardware.

• Minimum Requirements:-• Windows NT/2000/XP/Vista• COM Port or Ethernet interface• 16Mb RAM• 10Mb Disk Space

Starting FlashMagic …..

Reset circuit options:

• If you want FlashMagic to reset your device then check it.

• Else if you want to go for manual reset then uncheck it. (Of course , for this , You should be having reset circuit)

Step1- Communications(1) ‘Select Device’ .. Select an appropriate one for you.

I selected 89V51RD2.

(2) ‘COM Port ’ Selection

• Now select COM Port which is available in your PC .

• Check it by following the steps for Windows7:-

• Go to ‘Device Manager’

• As you can see there’s one COM port available in my PC. So I can use COM1.

Caution:

• Mind well that other application isn’t using the COM1.

• E.g. If Hyperterminal is running , there’s possibility of it.

• Okay , Now we continue our set up of FlashMagic.

(3)‘Baud Rate’ …. Select an appropriate baud rate.

• If baud rate is high then you may get warning:

(4)‘Interface’…. ‘None’ option is for ISP.

Step2- Erase

Step3- Select Hex File

Step4- Options

Step5- Start!

• If you’re going for manual reset , you’ll get message:

-> So , You’re required to press reset switch now.

• Now your device is been programmed…. Bingo…..

• Wait , wait …. It’s this much straight forward if all things goes smoothly…. But….. you may get some errors. Like :-/

• Unable to connect at specific baud rate• Failed to read device signature.

• Visit:www.flashmagictool.com/autobaud

Many of your doubts may get solved.

Things to take care• Don’t forget turning on power supply.!• Don’t click on ‘YES’ when the message displayed:

‘Running the program may harm your device’. There’s chance to loose your motherboard also.

• Test your RS-232 doing loopback test :- Jumper pins 2 and 3 together then run Hyperterminal and see if you get an echo. If so, most likely your serial port and cabling are working fine.

-> Use LOW VALUE resistor in RESET circuit. High value resistance will make your device in reset mode all the time.

Windows 7 isn’t having hyperterminal , so ????• open any XP system & copy 4 following files :- 1)-C:\Program Files\Windows NT\HYPERTRM.EXE

2-C:\Windows\Help\HYPERTRM.CHM3-C:\Windows\Help\HYPERTRM.HLP4-C:\Windows\System32\hypertrm.dll

• Then open win7 system create a folder name of "HyperTerminal" under Program files & then paste 4 files.

• Create shotcut -"C:\Program Files\HyperTerminal\HYPERTRM.EXE"

• open short cut . Hyperminial is ready.

• References:• http://www.ece.ubc.ca/~jesusc/P89V51RD2_System.jpg• http://social.technet.microsoft.com/Forums/en/ITCG/thread/

9a378d29-8185-4494-acbd-42dbd2ab1594• www.flashmagictool.com/autobaud

• Thank you. - Suket Thakkar (6th Sem. ECE , Dharmsinh Desai University ,

Nadiad, Gujarat.)