TK. Posted June 12, 2006 Report Share Posted June 12, 2006 Great that you finally solved this! Now we especially know, how the bootloader reacts on a bad supply voltage.Shum, could you please test the upload of the application with MIOS Studio? I just only want to know, if it works reliable on your computerBest Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
Digispunk Posted June 12, 2006 Report Share Posted June 12, 2006 :) - i just read this with great interest - , as mentioned before - i am no success uploading regardless of the method used, and my core is being powered with the C64 optimised power supply, i will check out my power supply and report back :-\ Quote Link to comment Share on other sites More sharing options...
tos Posted June 12, 2006 Report Share Posted June 12, 2006 TK maybee you should add to the MIDI debuging guide a pover supply check. It seems to me that PSu is a "troublemaker" with many failed MIOS uploads. Just something like:"Check the voltage on J2, if it is ______V than everything should be ok with your PSu." Quote Link to comment Share on other sites More sharing options...
Shum Posted June 13, 2006 Author Report Share Posted June 13, 2006 Hi Thorsten,Loaded the bootloader with burner to the pic. Uploaded MIOS with MIOS Studio_v7 successfully. Thereafter uploaded the midibox64 application without fail. The uploading was very smooth and fast.I got the feeling that the pic18f452 is more susceptible to noise than the older 16f877. For those who are using switching power supply unit to power the core, there is a need to have additional smoothing and noise trap circuit to ensure the quality of the supply.I took the liberty to include here an additional circuit for those who are going to use switching power supply. This is in response to Digispunk's postingBest regardsShum Quote Link to comment Share on other sites More sharing options...
Digispunk Posted June 13, 2006 Report Share Posted June 13, 2006 NIce work Shum, and thanks for the help - good luck with the rest of the project! :) :) :) Quote Link to comment Share on other sites More sharing options...
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