In System Programming (ISP) for ATMEL chips

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In System Programmer (ISP) for ATMEL micro controllers http://www.ikalogic.com/isp.php Page 14 of 29 26-02-2008 Anonymous visitor on: 02 Jun 2007 Posted by: Ibrahim Kamal on: 02 Jun 2007 Posted by: Abhay on: 05 Jun 2007 Posted by: Ibrahim Kamal on: 05 Jun 2007 [Quoting: Ibrahim Kamal] [Quoting: suetaM] Hello,I mounted the cable and I'm its ok to read the device.I understand that to read it I need both MOSI, MISO, CLK and RESET signals, cause one is the way of solicitations to 89s51 and other is the way of listening answers.I know both signals are operating ok, cause your software read only FF bytes when one of each cables are not plugged on my protoboard. And when are pluged, I read "real" values.So, all the four signals are operating ok to read, but when I try to write I have the "Write Error at adrress 0 ....." error.I tried to put the capacitor 10uF to the source and the error continues.I tried with four microcontroler, all showed the same error.So, some idea?I unbelieve the problem is at 89s51 cause it's understanding my solicitations and answering.Other question... where do I found 89s51 ATMEL ISP programmer? Thanks,suetaM well, let's start from the begining, did you connect pin 31 to 5V, and a crystal oscillator on 18 and 19?try slowing down the process from the ISPprog software..what is the length of the cable?Try another power supply, if the power supply is not clean and too noizy it gives me the same symptomes. try operating from a battery and a 7805 regulator...let us know how it went.. good luck I download other software and, whith the same cable schematic shown on this page I solve the problem. So, I can say the problem is the software.The software I downloaded can be find at http://www.aec-electronics.co.nz/index.php?page_id=18I tried to take out the 7408 buffer and it operate. So I changed my source to a computer source (5.15V) and it didn't operate.So, I installed a 10K resistor betwen the RESET and ground and a 0.1 uF capacitor betwen source and RESET, and it operate.So, my schematic folows (without 7408 or any buffer):DB25 89S516 RESET7 MOSI8 CLK10 MISO18-25 GROUNDI suggest a cable with one more wire (6 at total), where you will plug on microcontroler Vcc (Source). Lets call it signal by MIC_SOURCE.So, to finish your cable, install a capacitor 0.1uF betwen MIC_SOURCE wire and RESET wire and a resistor betwen wire RESET and GROUND and download software athttp://www.aec-electronics.co.nz/index.php?page_id=18Its possible to run with it's page software, but on my micro it didn't happened.So, is it andDá-lhe Grêmio!!!!!!! (Soccer World Championship 1983 and 2 times America Championship) Reply With Quote [Quoting: suetaM ] I download other software and, whith the same cable schematic shown on this page I solve the problem. So, I can say the problem is the software.The software I downloaded can be find at http://www.aec-electronics.co.nz/index.php?page_id=18I tried to take out the 7408 buffer and it operate. So I changed my source to a computer source (5.15V) and it didn't operate.So, I installed a 10K resistor betwen the RESET and ground and a 0.1 uF capacitor betwen source and RESET, and it operate.So, my schematic folows (without 7408 or any buffer):DB25 89S516 RESET7 MOSI8 CLK10 MISO18-25 GROUNDI suggest a cable with one more wire (6 at total), where you will plug on microcontroler Vcc (Source). Lets call it signal by MIC_SOURCE.So, to finish your cable, install a capacitor 0.1uF betwen MIC_SOURCE wire and RESET wire and a resistor betwen wire RESET and GROUND and download software athttp://www.aec-electronics.co.nz/index.php? page_id=18Its possible to run with it's page software, but on my micro it didn't happened.So, is it andDá-lhe Grêmio!!!!!!! (Soccer World Championship 1983 and 2 times America Championship) Wow! suetaM I am impressed, nice problem solving approach!And thanks a lot for sharing such useful information to the visitors.See you soon! Reply With Quote Ya ok good news ..... my programmer works...... hey one thing the program you have written is perfect no problems.... but few things must be noted..... the Atmel datasheet mentions the use of two 33 microf capacitors with the crystal oscillator.... you kno that had spoilt my entire programmer..... i screwed 3 chips using that capacitors...... i had used 2 33microfarad electrolytic capacitors with the crystal connected to ground.... incase any of you have used it take it out and then try else try out a ceramic 33 microfarad..... i dont kno whether using a ceramic capacitor will work or not but it is definitely worth a try...... one more thing i wanted to ask is the programming is done and the program read the microcontroller flash too and programs it but it doesnt seem to run the way it is intended..... apart from grounding reset and connectine ea(pin 31) to Vcc wat else should be done ..... i had written a stepper motor program where the the pins 1.2 and 1.3 keep going on and off with 1 second period but the pins in the microcontroller remains at 5.15 volts. no change i dont understand why .... i am guessing the chip is screwed..... I didn't write this software, All the credit goes to Adam Dybkowski Reply With Quote [Quoting: Abhay] hey one thing the program you have written is perfect no problems.... [Quoting: Abhay]but few things must be noted..... the Atmel datasheet mentions the use of two 33 microf capacitors with the crystal oscillator.... you kno that had spoilt my entire programmer..... i screwed 3 chips using that capacitors...... i had used 2 33microfarad electrolytic capacitors with the crystal connected to ground....
In System Programmer (ISP) for ATMEL micro controllers http://www.ikalogic.com/isp.php Page 15 of 29 26-02-2008 It's the first time i hear of some one using Electrolytic capacitors for a crystal oscillator, it's definately a bad thing to do! [Quoting: Abhay]incase any of you have used it take it out and then try else try out a ceramic 33 microfarad..... i dont kno whether using a ceramic capacitor will work or not but it is definitely worth a try...... Thanks for the advice. i'll add that in case you don't have the right cerramic capacitor, you can not add any capacitor, and it'll work anyway, the frequency wont be very stable, but that's all. [Quoting: Abhay]one more thing i wanted to ask is the programming is done and the program read the microcontroller flash too and programs it but it doesnt seem to run the way it is intended..... apart from grounding reset and connectine ea(pin 31) to Vcc wat else should be done ..... i had written a stepper motor program where the the pins 1.2 and 1.3 keep going on and off with 1 second period but the pins in the microcontroller remains at 5.15 volts. no change i dont understand why .... i am guessing the chip is screwed..... why would you ground the RST pin? don't do that! just connect a resistor between it and the ground, and a 10uF electrolytic CAP between it and Vcc.If the programmer said "ready" then the code it downloaded on your chip sucessfully, so search for the error in the code or in your hardware. Reply With Quote Posted by: arun kumar on: 07 Jun 2007 Posted by: Ibrahim Kamal on: 07 Jun 2007 Posted by: mvs sarma on: 08 Jun 2007 Posted by: Anonymous visitor on: 08 Jun 2007 Posted by: suetaM on: 11 Jun 2007 Posted by: mvs sarma on: 12 Jun 2007 we r using at89c55 i want to load the program using parallel port programmer kit.where it is available in chennai Reply With Quote [Quoting: arun kumar] we r using at89c55 i want to load the program using parallel port programmer kit.where it is available in chennai Among all 8051 programmers, only the "s" series can be programmed via the ISP port. the AT89C55 cannot be programmed with the ISP programmer proposed on this page. Reply With Quote [Quoting: arun kumar] we r using at89c55 i want to load the program using parallel port programmer kit.where it is available in chennai Hi Arun, Unless you are particular about using 89c55 only, it will workout cheaper to shift to 89S52 as these are very cheap at less than Indian Rs.40/- and this simple programmer can do for you and your job is done. Hope you will appreciate the economics of the idea.Sarma Reply With Quote [Quoting: Abhay] Ya ok ...... the Atmel datasheet mentions the use of two 33 microf capacitors with the crystal oscillator.... try...... o Hi Abhay, please look at the same datasheet carefully- you will notice that the CAPs are 33pF each (Pico farad-- and NOT Microfarad)thereis a musquito to elephant difference between pico to micro Hope this will help to serve you better.Sarma Reply With Quote Hello!I'm happy cause I solve the paralell ISP cable programming problem.But now I'm with a new problem.I implemented serial communication with 89s51 but when I turn off and turn on the 89s51 source it just don't operate more. I need to reprogram many times to it begin operate rightly.Someone with the same problem? Reply With Quote Hi suetaM,1. ensure that the 5V supply is noisefree. If you use 5V regulator -ensure that the input is more than 8Vdc even with a 20mA load at the output.2. ensure that the sck clock is set at LESS THAN 1/16th of the crystal frequency used.3. esuure that the cable length between RS232 port and the programmer is minimum.4. definitely check for any dry joints-- DON'T USE TEMPORARY ESTABLISHMENT LIKE BREADBOARD as this will cause intermittant connections.5. put a 10uF capacitor between Vcc and Gnd VERY NEAR TO THE 89S52 PINS.6. ENSURE THAT PINS 40 AND 31 ARE CONNECTED PROPERLY. Perhaps you are already aware of all these funds.with these precautions you will succeed.Sarma Reply With Quote Posted by: maryam on: 21 Jun 2007 hi dear all,does this programmer work with winxp? Reply With Quote Posted by: Ibrahim Kamal on: 21 Jun 2007 [Quoting: maryam] hi dear all,does this programmer work with winxp? Yes, it does work for win XP
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