kogz23 Posted January 21, 2011 Report Posted January 21, 2011 Hello all, so I've built the bare board for the MB652. I put all 4 pics in, after testing voltage points etc. The LCD said READY, so I thought all was well. I went to upload the latest MIOS, 1.9g and now it says either "no response from the core" or "MIOS8 cannot open bootloader" So now MIOS studio will not talk to the PIC. The LCD now just displays blank squares. What have I done?! The PICs are from Smash TV, the board is REV 1. I have lifted the xtals a bit so there is no short. I have tried each core and none talk to mios studio. So I suppose it must the midi section rather than the core..Any ideas? Cheers Al Quote
kogz23 Posted January 22, 2011 Author Report Posted January 22, 2011 (edited) More info...when I turn on the core I get the correct f0 00 00 7e 40 00 01 f7 midi in message. Unfortunately it is accompanied by No response from MIOS8 or MIOS32 core! I have put the PIC(4685) in a core that I know works, my MB808 core. So have I somehow screwed up the bootloader? All I did was try and update the MIOS...any thoughts? Cheers Al edit: So it is not consistent. Not all PIC send a message to the in port. 1 chip occasionally gets to the stage where it says Application is up and running. I managed to update the MIOS on this chip. I am using the same core, swapping chips and getting confused with all of this. 1 working PIC, one which just sends a message and another that does nothing. The one that works device ID is 02. Edited January 22, 2011 by kogz23 Quote
phunk Posted January 22, 2011 Report Posted January 22, 2011 (edited) When you have bought your PICs from SmashTV, they came with an already preinstalled Mios as the sticker on the ICs suggests. That´s the reason why the display output "ready". Without Mios it would just have said nothink like it does now. So did you try to upload Mios or did you try to upload an application? The Message F0 00 00 7E 40 00 01 F7 means that your bootloader is fine and your pic is running. Edited January 22, 2011 by phunk Quote
kogz23 Posted January 22, 2011 Author Report Posted January 22, 2011 (edited) I tried to update the mios to 1.9g. 1 pic works. 1 sends the F0 00 00 7E 40 00 01 F7 message but MIOS studio says no response from the core, 2 pics send nothing... Edited January 22, 2011 by kogz23 Quote
kogz23 Posted January 23, 2011 Author Report Posted January 23, 2011 So out of desperation I built the pic burner on the ucapps site. I now managed to get the one PIC that was sending the F0 00 00 7E 40 00 01 F7 message fully working, Great! However the other 2 are still unresponsive. I reloaded the bootstrapper via the pic burner, successfully. Hooked up to the MIOS studio still no joy. I have tried swapping cores, but it appears that it is something with the chip. Am I missing something? Cheers Al Quote
nILS Posted January 23, 2011 Report Posted January 23, 2011 Are you testing the different chips in the same socket on the mb6582 base board? Where did you get the PICs? Are you positive they're the right kind and there's the right software on them? Quote
kogz23 Posted January 23, 2011 Author Report Posted January 23, 2011 (edited) Hi, yes, I'm testing different chips in the same core on the MB 6582 baseboard. I got the PICs from SmashTV, they are all PIC18f4685's. I was trying to upload MIOS 1.9g to them as they came with 1.9f on them. After this didn't work, on a core I knew was working, I uploaded the bootloader hex file via a pic burner. This fixed one chip, but 2 are still unresponsive. It says the PIC has been burned correctly, so I don't think that is the problem. Cheers Al Edited January 23, 2011 by kogz23 Quote
kogz23 Posted January 24, 2011 Author Report Posted January 24, 2011 No more developments. If I can successfully upload the boot loader via a pic burner does this mean the pic is 100% working? Or is there still the possibility that I have 2 faulty chips? Cheers Al Quote
Wilba Posted January 25, 2011 Report Posted January 25, 2011 Which PIC burner and PIC burning software are you using? Are you sure you're burning the correct ID onto the PICs? Could this be some issue with PIC ID=0 working and ones with a different ID not working? Check which bootloader you are burning, it should be bootloader_v1_2b_pic18f4685.hex Similarly, check which MIOS you are trying to upload (not burn), it should be mios_v1_9g_pic18f4685.hex Keep testing using the same Core each time, and maybe even trying to burn PIC ID=0 onto all four PICs when you burn the bootloader. After MIOS is installed on all four PICs, you can use another app to change the PIC ID to something different, or just burn again with PIC ID=1,2,3 Quote
kogz23 Posted January 26, 2011 Author Report Posted January 26, 2011 Hi, I'm using the PIC18 software along with the MB pic burner. I can not see anywhere to change the ID while uploading via the pic burner. I assume all the ID's are written as 0 when there is a fresh install of the boot loader. Same situation, 2 chips are still not talking with MIOS studio. But the boot loader is apparently uploaded successfully. I am now assuming I have 2 corrupt chips and have ordered 2 more from SmashTV... Quote
Janis1279 Posted January 26, 2011 Report Posted January 26, 2011 Hi, I'm using the PIC18 software along with the MB pic burner. I can not see anywhere to change the ID while uploading via the pic burner. I assume all the ID's are written as 0 when there is a fresh install of the boot loader. Same situation, 2 chips are still not talking with MIOS studio. But the boot loader is apparently uploaded successfully. I am now assuming I have 2 corrupt chips and have ordered 2 more from SmashTV... http://www.ucapps.de/mios/change_id_v1_9g.zip Quote
kogz23 Posted January 27, 2011 Author Report Posted January 27, 2011 Hi, I checked that out, but as the 2 pics are not responding to MIOS studio I cannot use the hex files to change the ID. As far as I know they can only be loaded via midi. I burn the boot loader, switch over to the core and mios studio and nothing. Cheers Al Quote
Janis1279 Posted January 27, 2011 Report Posted January 27, 2011 ...Alternatively you can plug the PIC18F4685s which should work as slave temporary into the master socket and upload (and especially test!) the applications from there... Quote
kogz23 Posted January 30, 2011 Author Report Posted January 30, 2011 Hi there, the 2 faulty pics do not work in any of the cores, be it master or not. Bit stuck with this now... Quote
kogz23 Posted January 31, 2011 Author Report Posted January 31, 2011 (edited) Hi all, so I got 2 new PICs from SmashTV. Now I have 4 working cores, 1 master and 3 slaves. Cool! So all I can deduce is that somewhere along the line I managed to fry 2 pics. What confuses me now is the fact that I can successfully upload the boot loader to one of these pics, but then when I hook it up to MIOS studio it sends absolutely zero info on power up. I'm pretty new to this pic programming stuff, so please bare with me! Anyway, I should forget about it and get on with testing troubleshooting the rest of the MB-6582. I just have 2 pics which I feel can somehow be resurrected, or maybe I have fried em so hard they are unsaveable. If I can upload the boot loader does this prove they are healthy? Cheers Al Edited January 31, 2011 by kogz23 Quote
nILS Posted January 31, 2011 Report Posted January 31, 2011 If I can upload the boot loader does this prove they are healthy? No. It proves that the things relevant to burning them are still working, nothing else. Quote
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