vincentime

Hello, I am curently building a SEQ V3 with aout_lc module. All wire aren't connected yet (encoders are missing) but i can already tweak the butons. I know how to configue the aout (i show the voltage at CV1) but i can find the menu like the one in midicv (where i can choose V/octave or V/Hertz, polarity and so on...). Does anybody know if this menu exist ? If yes, howcan i reach it ? Thanxs for your help

Trop top, ça marche. Finalement, après avoir mis à jour MIOS studio et MIOS, rechargé plusieurs fois l'application, verifié le cablage,.... j'ai trouvé une erreur de cablage sur le second lcd !!! je me deteste. L'application midi cv n'utilise qu'un lcd, c'est pourquoi elle fonctionnait bien. Au passage, je confirme que l'appli SEQ V3 démarre bien et affiche bien le menu sans bankstick, sans IIC midi et sans DIN/DOUT connectés. Bon ben, merci à tous pour votre aide, de mon coté il me reste tous les DIN et DOUT à cabler sur la façade, du velour j'espere.... A bientôt, je vous tiens au courant quand je termine (et aussi si j'ai des problèmes;-).

It works !!! Finaly, i found the problem, i made and bad conection bewteen the core and the second lcd. That's what probably prevent the application to start. I repair the connection and now i can see both lcd show the SEQ v3.2 menu. I had check everything many times, update mios studio and mios, check the connections.... stupid i am !!! Great, now i can connect the frontpannel to the IO modules. Thanks you everybody for your help, i will let you know when the seq will be finished (or maybe the next pb ;-)).

A propos du module IIC,...., ben j'en ai pas. Je compte utiliser le SEQ avec l'interface CV pour piloter un synthe analogique. Je m'etais dis que le flux midi sera faible et donc le bug eusart ne me génera pas. Si il y a un pb avec le port IIC (une resistance pullup), c'est peut être ça mon pb.... Je regarde ça ce soir. Merci, je te tiens au courant.

thanks echopraxia for your help. i have already load the pic with mios 1.9f, then sent SEQ3.2 : the lcd remain black. i don't understand what you say about the pic header, i use smart option while loading the pic and everything seems ok. Loading another app like midibox cv work fine. however, i will try one more time every step in order. who knows....

hello all, I'am currently building a midibox seq V3. I have finished all module and have connected them together. I built the front pannel. I just have to connect the pannel. The problem is the folowing : when i load the pic with the seqv3 hex, i have the first lcd row who remain black. mios studio show the sequence sent by the bootloader non stop. => i supose that the mios is not starting ?? when i load the midicv in the pic (i previously built a midibox cv with 18F4620), the LCD show the midibox cv menu. i deduce that the core is ok. Do anybody have any idea ? I don't think that the DIN and DOUT need to be connected for the application to start. Right ? Thanxs in advance guys for your help...

Salut, j'utilisais mios studio beta7.4, je me suis donc essayé avec la dernière version beta7.5 comme tu le suggeres.... tout pareil. J'ai également testé en configurant mon .asm sans bankstick mais ça ne marche toujours pas. Ce qui me chiffone c'est que ça marche avec midi cv 1.1 (j'ai le menu), et si je charge l'appli seq v3 : rien à faire. Ce qui change entre les 2 c'est la présence d'1 DOUT (qui n'existait pas et donc pas configuré dans le hex), 2 DIN en plus et du bankstick (que j'ai pas branché). Quelqu'un sait si les DIn et DOUT doivent être connectés pour que l'appli démarre ? De mon coté, je vais re verifier le cablage.... Merci

Bonjour à tous, J'ai entrepris la réalisation de la midibox seq V3. N'etant pas sur de terminer un si gros chantier, j'ai réalisé d'abord une midibox cv (à partir d'un 18F4620). Celle ci marchait nickel sans pb. J'ai alors réalisé les modules din et dout manquants et recablé le tout. A ce jour, j'ai cablé tous les modules (sauf iic midi et bankstick) mais pas le panneaux de commandes. Tout est pret, y'a plus qu'à relier la facade. Le firmware midibox cv est toujours dans le pic. Lorsque je met sous tension, le lcd affiche la menu de l'application midibox cv (mais je ne peux rien faire car aucun bouton n'est branché). Si je flash avec l'appli seqv3, alors le bic boucle : rien ne s'affiche (ligne noire) et MIOS Studio sur le PC montre des emissions régulières du pic (la sequence midi du boot). Si je remet le firmware midibox cv j'ai le menu. Je me suis fait un .HEX avec ma config. Du fait du pb j'ai ensuite essayé avec l'hex fourni déjà compilée. Dans les 2 cas ça plante. Qu'est ce qui cloche ? J'aurais aimé avoir les menus midibox seq pour cabler les diodes et boutons et tester au fir et à mesure. Dois je cabler l'ensemble des boutons/diodes pour que le soft démarre ? Y a t il une erreur de cablage sur les modules que j'ai ajouté en plus de la midibox cv ? est ce lié au .HEX que j'envoie ? Y a t il un truc que j'ai raté ? qu'est ce qui peut empecher l'appli de démarrer correctement ? Voila, à votre bon coeur.... Je continue à chercher et alimenterai le poste de mes recherches/reflexions. Merci

Yep, i find this on the wiki (parts faq) : Can I use the 18F4520 series? Although it looks good on paper, there is a bug that prevents back-to-back interrupt driven transfers on the serial port. This makes it unusable for MIOS. The 18F4520 has been tested and it is confirmed that it does not work due to this bug. Microchip are aware of this bug but it is not, and may never be resolved. I think that those 18f4520 won't be useful for this projet. I think i will use 18f4620 as the application are binary compatible, isn't it ? Thank you very much audiocommander, you solve my problem (or at least explain it ;) ). Vincent

thank you henrygr but i had already saw this post. I think this is not my pb because i even don't see the sysex from the core when using 18f4520. Furthermore, everythings work fine with the 18f4620. Audiocommader, i think (and hope) that you find the problem origin. The pics i use are exactly : 18f4620 and 18f4520 I am aware that it exist differents bootloader for differents pic but i use the bootloader specified for the18f452 whereas it is a 18f4520. I thought it was the same part. What is the difference between these 2 MCUs ? I search on microchip website and i cannot find a 18f452. I can find 18f4520, 18f452 and 18f4525 but no 18f452. Do you confirm that a 18f452 and a 18f4520 are different ? What should i do to confim this is the reason of the problem ? try to compil the bootloader for 18f4520 (i haven't any 18f452 available) ? One more information, i am using a workbench power supply, 5v 2A max. I modify the core with no regulator but keep the capacitor, the voltage is 5 volt exactly on the pic pin. Thank you for your help, To be followed...... Vincent

Hello all, I am currently building a midibox seq and i encounter a problem with the loading of MIOS in the PIC.The objective is to build a seq v3 but as a training i plan to buid a midi CV first (with the same module). I am using a JDM programmer with WINPIC800 and load the bootloader in one pic 18f462 (for the seq V3) and two 18f452 (for the midi cv). The verify is OK, the ID of the pics are 0 (that's what Winpic800 say). I have no problem with the 18f462, when i connect the core module to the PC with a EMU usb/midi adapter, MIOS studio receive the sysex from the core and i can load the MIOS and later an application. -> my conclusion is that the core is OK and the PC midi interface compatible. The problem is with the 18f452 (both have the same behaviour) : when plug into the core module, MIOS studio don't reveive a message. I check the pin 25 (TX) of the 18f452 and there is 5v. I conclude that the pic has started because the usart is open. I remove the pic and shortcut tx and rx (M1 and M0 of J11, test TEST INOUT1 of the midi troubleshooting guide): every message send by MIOS studio is receive in the midi IN. I conclude that the midi interface (optocoupler and pinout) of the core is OK I try the TEST SW1 with a software loopback : i see the event gooing out from MIOS Studio but don't see any answer from the PIC : I conclude ....... nothing !?!? I can't see where the probleme is located I try to Set pic ID to 0 using the code given in the website : it didn't change anyting. I check the pic pin25 (TX) with a scope, the voltage is 5v and don't move. And now i don't know what to do. I think that the core and midi connexion are OK because everything work with 18f462 but i can't manage to make the core work with 18f452. Using software loopback is not working also. Everything make me think of a problem with the pic itself : Is it starting correctly ? I think so because there is 5v on the pin25 (TX). Is the ID corect ? I think so because winpic800tell me so and trying to force it didn't change anythning. Any kind of help, idea, sugestion or test is welcome. Thank you, Vincent