jamie Posted February 20, 2013 Report Share Posted February 20, 2013 (edited) Hi, something strange happens when i try to upload mios into the PIC. First of all some infos. Im using a Mac with OS x 10.7.5 , Midi-Interface AMT 8 emagic (and RME Hammerfall Multiface,) Mios 1.9g, Mios Studio 2.4.2 and an own designed PCB of a mb808 sequenzer (seq dr.) The story: I burned bootloader 1.2 with MBHP Burner on the pic. then i stick the Pic into the PCB an connected the MIDI cabels to the Midi-interface. I switched on Power and started Mios Studio. The display (16X2) on the PCB shows a line of squares in the upper row. Mios detects the Core and shows: Operating Systems: Mios8 Board: MBHP_Core or similar Core Family: PIC18F Bootloader is up & running! Then i choose the Mios hex file for PIC 18F4620 and start the upload. after rebooting the Pic Mios Studio shows Operating Systems: Mios8 Board: MBHP_Core or similar Core Family: PIC18F Application is up & running! Everythings seems to be fine, but the display of the Midibox still shows a line of squares in the upper row, no "copyright" an no "ready" strings appear. If i try to uppload an application nothing happens. It's like there is no Mios uploaded. Is it Possible that Mios is running and the Display shows still this line of squares? I checked all the voltages on the Pic and the Midi connections like described in the troubleshooting for about 5 times. I also replaced the pic (3 times) but the result is always the same. I also took one Pic out of a real fine working Midibox ----> same problem. Does anyone got an idea how i can solve this? Thanks Jamie Edited February 24, 2013 by jamie Quote Link to comment Share on other sites More sharing options...
jamie Posted February 21, 2013 Author Report Share Posted February 21, 2013 Ok, some new results: I put the pic back in another core modul, switched the power on an to my suprise it starts mios and the application. So there is no problem with the upload (what a nice result), but in the other pcb it seems that the pic won't start mios or the application. Does anyone got a clue what the possible reasons can avoid starting the application? Thanks jamie Quote Link to comment Share on other sites More sharing options...
sneakthief Posted February 22, 2013 Report Share Posted February 22, 2013 Obviously if the PIC works in another core but not your mb808-sequencer core, then there's a problem with your wiring somewhere. Is your LCD is wired incorrectly? Is your PSU delivering enough voltage? Quote Link to comment Share on other sites More sharing options...
jamie Posted February 24, 2013 Author Report Share Posted February 24, 2013 Midibox Addict thanks for your hints. I checked the PSU by connecting both (Core Modul and my own PCB) on it. PSU works fine. But now i was able to compare the PIC one on one. So i started measuring the voltage on the PICs Pin by PIn and found out, that there were some shorts on my PCB. This was caused by some signalstripes that were too close together. I fixed that by cutting this stripes an soldering some wires in. So now the PCB and the PIC works fine. THANK YOU!! Quote Link to comment Share on other sites More sharing options...
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