Nat Posted August 27, 2003 Report Posted August 27, 2003 Is there an easy way to test the core with the Midibox16E firmware running on a PIC16F877A ?Is it possible to test the core with a del ?I have tried the Test_TX firmware and had no luck so I'd like to try the real firmware.Thanks nat Quote
Nat Posted August 27, 2003 Author Report Posted August 27, 2003 I was also wondering, is this power supply correct ? INPUT : 120VAC 60Hz 15 wattsOutput : 13VAC 700mAI've been trying to make my core work for a month and i'm getting pretty desperated... Quote
Steven_C Posted August 27, 2003 Report Posted August 27, 2003 If this power supply is for the core (?) then it should be fine, as long as you have installed the bridge rectifier.What is a del?Have you read the recent posts on solutions to programming the pic16877A?If you still have problems, then I can program the firmware for you. I have a spare pic16f877, so I can program it, post it to you, and you can swap me your pic16f877A (saves time, you sending to me and then back again ;)) Quote
Nat Posted August 27, 2003 Author Report Posted August 27, 2003 Oups :) A del is a LED in french :) Got mixed upThanks for the offer, i'll troubleshoot some more but if nothing works i'll send you a pic with the Encoder package. The strange thing is that the programmation goes fine. It verifies ok. I can then remove the PIC and put it back again, do a read all and the program code is intact.... This gives me the impression the PIC is programmed correctly.... The crystal is good also, 20.000 Mhz with 18 pf capacitance, parrallel.... I really have no clue :( Quote
Ian_Hurlock Posted August 27, 2003 Report Posted August 27, 2003 Hi NatShould the capacitors for the xtal 18pf ???I think the 877 oscillator will not function with this value.I think they are 33pf each.RegardsIan Quote
Nat Posted August 27, 2003 Author Report Posted August 27, 2003 The Crystal has a 18pf load capacitance, the capacitors next to the crystal are 33pf... Quote
Ian_Hurlock Posted August 28, 2003 Report Posted August 28, 2003 Sorry NatRead that wrong :-/Ian Quote
Nat Posted August 28, 2003 Author Report Posted August 28, 2003 Np :)So anyone can tell if the 16E firmaware sends stuff at startup ?ThanksNat Quote
TK. Posted August 30, 2003 Report Posted August 30, 2003 You could manually trigger MIDI events by using a cable, connected to ground, and tapping it to the DIN chain input. However, if the Tx firmware doesn't work, the MB16E won't work, too -> Hardware issueBest Regards, Thorsten. Quote
Nat Posted August 30, 2003 Author Report Posted August 30, 2003 Thanks, I will have to make sure the PIC is working properly. Quote
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