I can not write the firmware on ATMEGA8535

Hello friends developers, :hi:

I need help! :
I'm building a Tronic's Full motion simulator car racing, but I have problems with the AMC.
I can not write the firmware on ATMEGA8535-16PI - Atmel.



Here is a photo in high resolution view of the board up and down.



This is the second AMC board I did and the two are the same type problem.

The program PonyProg2000 not find the serial port interface.

I follow the steps of Thanos_ponyprog_guide1_1.pdf:

1 - Start up the AMC in force
2 - Connect the serial port cable programming.
3 - Run the program PonyProg2000.
4 - Click on OK. The Following window appears.
5 - You need to run Calibration from the Options menu before any read / write operations
Click on OK
6 - Select 'Setup -> Calibration'
Calibration OK
7 - Select Setup -> Interface Setup 'and set up as shown below (Serial SI Prog I / O, COM1) and
click on Probe.
'Test Failed' message appears. :no:



These are the tests I did:
- Tested the PonyProg2000 versions: v2.06f BETA, BETA v2.07a and v2.07c BETA.
- I tested the connection with the AMC program PonyProg2000 on 3 different PCs with Windows XP 32 bits installed.
- Build two AMC with all different components.
- I checked the serial port was open in the BIOS of the 3 PCs
- I tried using the crystals 24, 22 and 18MHz.

Can I have bought 2 atemga8535 damaged?
I have to disclose any serial port in Windows XP?

Sorry for bad English.
I thank google for helping me translating Portuguese into English

Thanks for the help
:thbup:
Everton Quites
Brazil

Hello
I too have had problems in the building of the AMC Thanos. Your problem is you do not recognize the programming interface, and until it recognizes it will not be able to program atmega8535. Try to check all the soldering, make sure there are no cold solder joints and components on the program interface are all working. Use a power supply has enough amps (Thanos recommend 1A). Only after passing this problem you can try to program atmega8535, trying first with a 4MHz crystal and then maybe going to the one 18MHz. I so I could program my own.

Regards
pippo978

Hello pippo978
Fenix ​​beautiful avatar. Thank you for the reply. :yippiee:

I'm a beginner in electronics, but hardworking and ready to learn. :happy:

I am very happy to join this community, I hope to develop and if possible, also help the community. :highfive:

As for the problems:

- I have very careful when soldering, but cold solder may be the problem. I will make the solder again.

- I tested all components before soldering.

- The source of power is adjustable from 1.5 V up to 24V and maximum current of 1.5 A. I adjusted the 8V to the AMC.

- I will buy a 4 MHz crystal because of this I have not.

I'm using ST232CN replacing the MAX232. There is some problem in this exchange?

What amazes me is that AMC built a second to minimize the chance the problem happen, but it did not.

Thanks for the tips.
Everton

Hello

I too am not experienced in electronics, before being able to run my AMC I built two. I came to redesign the PCB and buy new components.
Just a small welding does not hurt to make everything work.
The max232 used by you, I do not think can cause problems, I read the datasheet and is sold as a substitute for max232.
The problem you're experiencing is still tied to the part dedicated to the program, check that the serial cable is properly connected and that is pin to pin.

Regards
pippo978

Hi, you have to be very carefull with the cable you are using. I had a lot of trouble with it. If you are using an usb cable must have in mind that they can have two types of chips and only one is the right one (generally the most expensive). I personally conected it straight to the motherboard idc10 pin headers (SERIAL COM). This method is pin to pin so there is no need for chip based usb cable.
regards!
:

Hi Everton,
Sometimes the ini file needed changes to work with the 8535, so you may check if you have this, as it worked perfectly for me. I use v2.07c

If you use the 4Mhz Xtal, match the (2) capacitors to 20pf (which also works with the 18.432Mhz).

The (Data I/O port) St232CN is a CMOS device and the (4) capacitors next to it should be 0.1uf ( no more than 1uf) and not 10uf, which may cause issues. But this will not affect the PP2000 programming through the Prog port. Good luck.

R-eng

Hello pippo978, rafael_design and R-eng :hi:

I am very thankful for the tips, I'll test all the tips! :yes:

It took me to answer because I was trying to cold solder joints. The results it seems that I have no cold solder.
I will post all the results you get with the oscilloscopes.

Many images of all points involved in programming. If anyone is curious can compare with your AMC that can help.





Cable RX-RX...






Voltage pins MAX232...
6



















2 BC547 do circuito do max232...






Voltage in ATMEGA8535...










Bridge programming...










BC547 da ponte de programação...






Resistors in the bridge program...




Voltage on pins serial port (DB9)...










Now I'll do more tests and keep you informed of my progress.
Thank you all.
Everton

just a silly thought; you certain that the KP DIP-Sw-2 was in the [OFF] position when you attempted to program?

Hi R-eng, :hi:

Yes, KP DIP-sw-2 was in the [OFF]. I prepared the voltages on the DIP for you take a look. :yes:







Regards
Everton

Hello Friends, :yippiee:

SUCCESS! Got! I could program the firmware on the ATMEGA8535. :clap: :lol: :rofl:

Observing that the rafael_design said about USB cables I decided to test my serial cable. I was surprised but the serial cable was all reversed, pin 3 was the 8 pin, 2 pin 5, that is a mess. Got an internal serial cable from an old PC and plug directly into the motherboard. Thanks rafael_desig. :thbup:





Many thanks for the tips pippo978, rafael_design, R-eng, and special thanks to Thanos (TronicGr) for the design and images used here in the forum. : :highfive:

I won a battle but I think the war will be long, hehe.
Now the next problem is that the program within the ATMEGA8535 not get, is a black square on the display.
I can program, read and write it, but will not start. I believe the ATMEGA8535 must have damaged so many tests.
I bought one but ATMEGA8535 and I hope he gets here at home by mail, to continue my long awaited project.

Regards
Everton

Hi Everton,
Nice to hear that you are having success! About the black square, in my case, it was just the lcd connection but things works anyway. In fact I had the black square when started to test H-bridge with the pots and motors.
So, maybe if you test the amc/hb together you will find out!

regards!

Hello Developers, I still need help. :

Build the H bridge but that did not have any effect, my problem with the display continues to show only black squares and not start the program. I do not know what to do. Please if anyone has any ideas.





Regards
Everton

A few suggestions. If this latest picture is the way you attempted to program the AMC, then I see a problem. All of your DIP switches are set to the on position. This means the KP is set to on, and then you cannot program the ATmega that way. The KP must be off. See pic with the yellow arrow.

Also, if you have chosen to program using a different Xtal from your final choice, let's say 4Mhz, then you must change your Xtal and dual capacitors to the target values after programming. And in your case, I would not exceed 18.432Mhz because you are using the 16Mhz ATmega chip.

Before you program the ATmega with Ponyprog, scroll to the bottom of the hex file and observe that the Xtal value is matching what you are using in the end. See my pic with the red circle.

You can verify the CRC code before and after writing with Ponyprog by doing a read on the chip.

Absolutely make sure your fuses are set correctly prior to writing to your chip!

I have reprogrammed the same ATmega between 50-60 times with never a problem, other than brain fade setting mistakes.

Follow procedures precisely and all should be fine. Make sure KP is off, jumper wires removed, Xtal reset if needed, and serial cable set to Prog connector prior to communicating with X-sim.

Here is a little tool I use to test the outputs of the AMC without the use of a volt meter, LCD, or H-bridge. Very simple to make on a perfboard or even glued to a small piece of cardboard.

Hope some will find this useful...works for me!

R-eng

hi,tonquites
Sorry,My English is very poor and had the help of Google Translate.
AMC build process, I also happened this things.Since there is no DB9 Interface on my PC ,I used USB to DB9 and Programming is slow. When the program succesful, I unplug the power lead 8535 lock.
Unlock and when program again i asleep and its OK....
These are all nonsense ,Sorry.
My means, you do wait until the programming light went out.
I also being built H-bridge now and It does not work.
I use a small motor 5V, and now I do not know with IRFZ44 or IRLZ44.....

Hello friend R-eng, :hi:

Thanks for the tips, I'll consider all suggestions.

- When I program, all DIP switches are off.



- I am using Crystal 18,432 MHz and 22 pF capacitors for programming.


- The firmware version is PWM_AMC15_2DOF_V1_CRYSTAL18.HEX


- I cleaned the ATMEGA8535


- I programmed it again


- I read what was written


I checked everything again, no cold solder the tracks are good.

-In the tests with the LED display goes black squares


I made a video where I put the potentiometer, disconnect the wires from the DB9 programming and place the dip 1 on, see the result:
http://www.youtube.com/watch?v=t8yQERRHf0o

I do not know what else to do ... :thbd: :?


Thank you for your help
Everton

I think that your LCD is missing some connections.
I've had similar problem, and if you could let us see your LCD wiring (best if you have exact LCD part number or datasheet) someone will help you solve this.
In my case, it was R/W pin, I didn't connect it to GND.

BR, Igor

Right off the bat I can tell that the ATmega is programmed correctly! Otherwise those LEDs would not function as in the video. Your problem is elsewhere and I suspect the LCD unit.

Make absolutely sure you have all wires configured correctly at the connector for the LCD as per;
tronic-s-amc-motor-motion-controller-with-pwm-servo-output-t559-360.html

Check especially your RS and E lines.

Make sure you use any 2x16 parallel LCD that has HD44780 controller, or compatible. You are almost there.

And double check the capacitor values as specified by the Xtal manufacturer.

--------------------------------------
Try this without worrying about the LCD.

Now, get another pot and connect it up to FBch2. Set both of them to the brake point where both LED pairs are lit. Connect to the PC via X-sim sender/profiler with an appropriate profile loaded, and run the game, such as rFactor. You should be able to watch the LEDs light up indicating accel/decel and left/right turns (if those are your chosen inputs) as the game runs.

R-eng

Hello Friends, thank you :hi:

I did a color scheme to show the connections to the LCD.



The resistor I'm using the LCD is 10 ohms, according the scheme of Thanos.

Here is the datasheet of the display.
MGD1602B-FL-YBS.pdf

It is possible that the LCD is damaged?
-----------------------------------------------

R-eng, I did not understand what I do now. :?
What is FBch2?

Regards
Everton

Connect the R/W pin (between E and RS) to ground if it is not soldered there. You have to be in Write mode to display anything on the LCD.