Sephult

Yeah v1_1b does work. There is no need for a fix. I have only heard of problems with v1_1 of the bootstrap loader. Have you checked your voltage levels? Make sure you have a stable 5v, with all pin connections verified as being hooked up correctly. If that doesn't work, there might be a problem in the midi end. I would initially disconnect the LCD screen from the board until you have found the problem. I have found this to be very helpful :) when doing troubleshooting. I have just had a dilemma with a constant reboot problem, and Thorsten had directed me to disconnect D7 and the 5v at pin 2 (contrast connection). It corrected my problem. I would say for the sake of troubleshooting to do so, to make shure that nothing is shorting out through the LCD connections. There is only a small amount of things it could be. 1.) Power requirements not stable 2.) Midi circuit is failing 3.) Either the LCD or I/O connections are shorted. You could also pull up/down I/O's, and minimalize the circuit, to make sure there's not a short. What settings are you using in MIDI-OX (if thats what your using)? Well thats about all the advice I can give today! -Good Luck- -Sephult

IT WORKS!!!!!! Hooray!!!! Thanks Thorsten. I added a 100 ohm at the 5v side of the LCD. It did the trick! Now I am ready to program, and start a tutorial. Thanks everyone- Sephult

Is it the bootstrap loader v1_1b? I heard something about the last version not starting up.

When the bootstrap is only loaded you will see the black squares on your LCD. Do this first 1.)You need to verify the bootstrap loader is burned right. 2.)You need to check your wiring on the midi circuit. 3.)Test your midi ports by attaching the input to the output and use send/receive sysex for transfer. When finished go to the sysex view and compare the two windows. If they match you are fine with the computer. Then if it doesn't work ask me again and I'll help you through it. -Sephult

Awesome Smash! How is the quality on the boards? Great prices, and right in time, would save me a lot of hassle to order from you. -Sephult p.S. Great job on the site

It seems that I can light the LEDs with Dout only at certain times when the app toggles. After a couple times it tends to lockup. Only certain ones will switch? Wondering if input is not stable.

OK Here is an update of where I stand: Reburn PIC and verified the cycles. Uploaded MIOS at 2048 * 4 @ 750 (Took a couple times) Uploaded CRC and produced FD45 Had problems uploading J5_dout app. After a couple buffer changes I was able to get 256 * 8 @750ms to work. It seems that I still have fast toggling between © and other screens. Now it seems to hold on © for 1 sec then 2 secs on app screen. I have been able to light some LEDs when app showed up, but timing is extremely sluggish. I can now verify that I am getting some correct uploads, but stability is low and the system seems to keep restarting itself. I have not changed the apps at this time, and will keep some info as I go. Thanks for the CRC app Thorsten!!!! I had a couple questions regarding these problems I am having now. I am wondering if any faults or isolation problems at the optocoupler would cause a reboot on the pic. If not maybe I am having 2 problems. I was also wondering the tolerance needed for the resistors on the optocoupler. What effects could be noticed if resistance was dead on compared to the stability of a value different from those on the schematic. Well back to troubleshooting- Thanks everyone Best Regards -Sephult

Hello Thorsten! Yes my core is running, it cycles the correct sysex also. As for soldering, I am using a solderless breadboard, so I am going to check my connections thoroughly again today. I felt the same about the Xstal, but hey it doesn't hurt to wonder. Got to love troubleshooting. Thank you soooo much for the CRC. I believe now that it either is a bad transfer due to Midi OX buffers, or a hardware problem. I was always wondering if MIOS was actually corrupt or not. I will keep you informed about the CRC and I should have another post today. Maybe I can post a solution for Robin303's problem and Mine. Thanks a Ton! -Sephult

OK! I am a little farther than I was before. I believe MIOS is correctly uploaded, I can get the verification back but not 100% of the time. I believe this is due to the toggling of the LCD. I am now seeing MIOS © and Ready.... Toggling between eachother. I have uploaded the j5_Dout app, and for the first time I saw the message MIOS Rebooting..... The App pops up, but still it toggles between © and the app. I have noticed that when you turn the contrast completely up, it usually freezes. When turned down for a little bit the toggling seems to continue again. I have been unable to get any DIN/DOUT working yet, but I did measure .4 volts at RC whenever the app was on the LCD screen. It seemed to go 0 on the toggle. I am unsure what this might be. I had tried to run a lab PSU into the MB and give some more current, but it seems to be the same, I had probably given about 400ma or so of current. I was also wondering what voltages might be read for the Xstal? I have seen about .9 on pin 13 and like 2 volts on pin 14, wondering if my Xstal might have stability problems? The only other thing I can think of is the optocoupler, but would this cause a reset of the pic? And if so how was I able to get MIOS uploaded, and the apps uploaded? Well I hope I can get this running!!!!! Please help!!! _Sephult

Hello! I am having some problems with my power supply, It seems to be regulating at 5.04v, but I am unsure if my current is correct. I am having problems getting measurements for current off of the powersupply. It seems that my handheld multimeter might be loading what little current I do have. I was taught to measure current by inserting it in series with the circuit, but this is not working for me. Any suggestions? It seems that the 7805 gets increasingly hotter when I check current at higher ratings.

Is it possible for a 7805 to regulate at 5v but give minimal current? I am having problems testing mine, any suggestions?

I was having problems with my 7805 regulating at 5v. I am using a cheap protoboard to make my prototype, and I notice that the 7805 was too far in the board. After a little adjustment it worked fine.

Thanks for the great Idea- I have totally bypassed the thought of just loading in the AIN, to check for jitter. I will do so and let you know what happens. Thanks again for the help- I really do appreciate it, and I bet Thorsten does too. I have enough things running around my head, I can just imagine whats going on in Thorsten's mind! Great work TK! -Sephult

Thanks for the advice steven I have grounded 2-5,7-10. I am unsure what to do with 15-18, 18 seems to be fine with 10k pull up. I have reached the point where MIOS says ready, when I load an app however, I cannot get the buttons to trigger any events. I am in need of just DIN and DOUTs, and I am basically just using a chip of each. I checked the main.asm file, and I notice that there is a place to set how many shift registers used. I thought there were 128 DIN, and 128 DOUT, but it sounds like TK had said 128 total Is there any explanation to this, or any other things that might need to be set before the app is loaded? Thanks for the help, I am stressing with 8 weeks left, and I want to be done with this for a prototype yesterday. -Sephult

Hey Pilo! 1.)Well I burnt the bootstrap with an OK 2.)I uploaded the MIOS with a response of "0k" 3.)I think I uploaded an application a.) It says waiting for DIN, AIN event 4.)Can't get it to respond to buttons 5.)Screen toggles between Copyright screen and 3a 6.)I get some random events sometimes 7.)I can't get MIOS to reply to (F0 00 00 7E 40 00 0F F7) 8.)I am lost

Getting frustrated!!! The LCD now is toggling between the © and Waiting for a DIN event. I cannot get any buttons to do anything. I am pretty shure things are wired up right, and I am still getting the startup sysex (F0 00 00 7E 40 00 01 F7) ICprog verified the burning of the chip and I had also read it back in. Mios seemed to load with all "0f", but now I cannot get Mios to send back (F0 00 00 7E 40 00 0F F7). Another thing that is happening is that I sometimes get random events (which I still get). Voltage at VDD is at 5v, the only other thing I can think is the optocoupler. I tested my 5.6k ohm and it came up to 6k ohm, but besides that I have no idea what could be causing the problems. I am totally stumped why my buttons wont work, and i cannot get verification back from MIOS. -Can anyone help ? -Sephult

I had one more question. If the Analog Inputs are unused completely, they should be grounded at pins 2-5, and 7-10 right?

Finally, I must have had a corrupt OS, or bootstrap. I completely erased the bootstrap, sent all the info, which verified, and I am now on the MIOS. The MIOS is working, I am getting the verification back as suggested on the bottom of the Introduction page. I am currently working out some bugs, I have the Mios screen that keeps jumping back from Mios v1.3 by TK and waiting for a DIN or AIN. It seems to be random received events, so I am unsure if I had correctly hooked up the DIN and DOUT. The question I had is what to do with pin 9 (OB) if I was only using a single Dout?

I have been having the same problem. To the T. I'll try to reload my bootstrap loader and go from there.

Yes! It is somewhat strange. I initially forgot to set the F7 delay and was having problems with the MIOS, but finally it worked, so the MIDI IN is working. I've tried to do the MIOS test that was given at the bottom of the Introduction. No luck, I sent the message, but no reply. I might want to recheck the MIDI out, but initially I could see the pic keep sending the code that it was working. I figured since the MIOS had uploaded and was flashing on and off on the LCD that it was more than likely working. As for applications, I cannot get a checksum on the input from the MIOS. Just keeps flashing MIOS v1.3 by mr Tk himself. Thanks for trying to help, -Sephult

I've gotten my box up and built, the mios has been upload. I keep seeing the MIOS pop up on the LCD, and I can't get any applications to load. Is there something I am missing? If anyone has any advice, I could use it. -Sephult

You Said: # the MIOS_HLP_Dec2BCD function can be used to convert a 16 bit decimal value to BCD (for example to send the digits of a decimal number over the MIDI interface or to display the numbers on a LED digit display) Could you explain in more depth? I am needing to convert some pulses through counters to a 7 segment for an actuator, and I am wondering if using the 18f might be a good way to do this. Also, could this mean that selected knobs could show values through 7 segment along with LCD? Thanks again Thorsten! like always- Sephult

Thanks Thorsten!

I have a question Does anyone know anything about setting up a specific LCD for the bootstrap loader? I am unsure which needs to be set for a 2*40 Display.

What use would a digital slider have? It seems that an analog slider, or even better Motorized Faders would handle most of what you would need done. What purpose would a digital slider have that the mentioned could not do already?