Slorrin Posted March 23, 2007 Report Posted March 23, 2007 Here are the results of my connection testD0 selected on mod wheelD0 voltage 3.8v to the Vss, 4.1v to the RCSC voltage 0 (measured against Vdd) 5,10 against the RC (5.12 on the core)rc voltage 4.14 (measured against VSS) SC selected on mod wheelD0 voltage 5.02 on all 4 chipsSC voltage 5.12 (also on the core)RC voltage 5.12RC selected on MOd WheelD0 voltage 1.84 on all 4 chipsSC voltage 3.24 against the vss, 4,78 against the RCrc VIKtage 3.39 agaiunst the Vdd, 4.78 against the SC (4.79 on the core)what does all of this mean? Why are the voltages lower than 5.0 on the RC test?Why are the D0 voltages not 5.0 for the D0 test?:( Quote
TK. Posted March 23, 2007 Report Posted March 23, 2007 These are very strange measuring results, especially the different reference points (Vdd/Vss) irritate me. E.g. for the SC check I'm not sure, if voltages are measured against Vdd or Vss, or if you mixed the reference points so that you always get ca. 5V...Please only measure against Vss (ground)And do this check with and without connected DOUT/DIN modules (without the modules only the selected line should be at ca. 5V, all other lines should be 0V)Best Regards, Thorsten. Quote
Slorrin Posted March 23, 2007 Author Report Posted March 23, 2007 DIN module disconnectedD0 modeall measured against the VSSD0 is on the DIN board, so i did not measure itSC - against Vss 0vRC - against the Vss - 0vSC modeSC - 5VRC - 0vRC modeSC - 0VRC - 5Vnow, connected with the DIN moduletaking measurements first on the core board, THEN the din boardD0 modecoreSC - 0v RC - 0vDIND0 - 5vSC - 0vRC - 0vSC modeCoreSC - 5vRC - 0.02vDIN moduleD0 - 5vSC - 5vRC - 0vRC modeCoreSC - 0vRC - 5vDIN moduleD0 - 5vSC 0vRC - 5vI checked the D0 on all 4 chips, and others, d1, d2, they all seem to be 5v all the time.. on all the chips Quote
TK. Posted March 23, 2007 Report Posted March 23, 2007 The voltages are ok. I think that you are just mixing "DO" (for Data-Out) with "D0" (for Dataline Zero)On the DINX4 board, the D0 line is an input, which is pulled up via 10k to +5V. So, the measured voltage level is as expected, and the module interconnections are ok.Best Regards, Thorsten. Quote
Slorrin Posted March 23, 2007 Author Report Posted March 23, 2007 I don't knwow aht line is the D O, but D0 is pin 11 according to the DINx4 diagram, so that's what i measured.Looking at the diagram, there's 5v going through a resistor to pin 11, so if you connect that to ground, it should always be 5v, so no surprises there i guess.Now what bothers me is, with all these voltages correct... why do the buttons not work... i have tried numerous alternatives... when a button is depressed, it's connecting a ground to the 5v coming in through the resistor, right? essentially, supplying 5v to the data register, i guess signifiying an "on".So i';ve disconnected all my buttons.. when i load sid 1.7 software, i should be able to access the menu by grounding D2 of the 2nd IC... pin 13i will do that and see if i get the menu this time... Quote
TK. Posted March 23, 2007 Report Posted March 23, 2007 Why not uploading MIDIO128 as proposed in the Wiki? (-> http://www.midibox.org/dokuwiki/doku.php?id=din_module)It's easier for debuggingBest Regards, Thorsten. Quote
Slorrin Posted March 23, 2007 Author Report Posted March 23, 2007 well, i tried just quickly grounding the pinsI got events on my lcd!!grouning D2 on j4 SHOULD be the "menu" button.However, i got the number 3 appearing next to Chn1i have a revision 3 din module, so i followed to corrected pinout, rather than the pinout shown on the board.. I will upload midio128 right nowquestion, when i click menu, what should I see? when I click D2 on j3, i see the next patch, and a message that no bankstick is present (so the patch is empty)SOO much more exciting than yesterday, when i could not get ANYTHING happening!!!EDIT=====I uploaded it, can create midi notes from the pins of the chips.. however, which notes should correspond to which buttons for the SID module i wonder.. i don't think i have it right, even with the corrected pinout.. somehow.. hmm====EDIT ====each D pin gives me, in order, the next note, chrmatically from C2 to G4so it works...the DIn + core are connected properly. excellent.. now to recheck my buttons.. my damn buttons.. Quote
Slorrin Posted March 23, 2007 Author Report Posted March 23, 2007 okay, ignoring J4 altogether, and using instead D0 - D8 on J3 ONLY, i have gotten the menu, rotary encoder, and 5 select buttons working.HURRAY FOR JUSTICE!!!next thing, bank stick!then i will sing some of my world famous music fo ryou guys over top of some cool c64 synth.sorry i'm such an annoying half wit, but this is all totally new to me. Quote
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