Megajolt hangs up while saving

General Megajolt Questions and Answers

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4600cc
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Joined: Sun Jul 11, 2004 1:48 am

Megajolt hangs up while saving

Post by 4600cc »

I've got a letter from Dmitriy Krikun, Russia. He've assembeled a Megajolt, but using cheaper and more available Russian parts. We can safely assume he knows his stuff, but possible that he made a mistake. Here is the problem:

He connects Megajolt to PC, doesn't matter with which tuner, as soon as he tries to UPDATE CONFIG there is no more communications between Megajolt and PC. He then sticks another KX8 into it and everything works just fine. (until the next UPDATE CONFIG) What could be the problem?


edit: he's burning S19 directly onto an empty chip. Could that be a problem?




ORIGINAL:
<blockquote>здра�твуйте �лек�андр, по�мотрев на фамилию мне показало�ь что вы знакомы � ру��ким �зыком.
Саша нужен Ваш �овет, � �ам из Мин�ка, у мен� много знакомых из авто�порта, уговорили мен� �делать им зажигание, �обрал Megajolt , немного переработал �хемку чтоб и�пользовать до�тупные �лементы, �ейча� �толкнул�� � проблемой, программирую kx8, подключаю Megajolt к PC, не важно � помощью Вашей программы или �вов�кой �оединение е�ть, как только � пытаю�ь �охранить измененные данные карты пишет что �охран�ет и ВСЕ больше Megajolt не �в�зываеть�� � PC, �тавлю другой kx8 в�е оп�ть работает, в чем может быть причина компьютеры пробывал разные �коро�ть порта тоже ограничивал до 4800 С уважением Дмитрий Крикун</blockquote>

4600cc
Posts: 0
Joined: Sun Jul 11, 2004 1:48 am

He just wrote me back, the

Post by 4600cc »

He just wrote me back, the problem was that he was burning mjlJunior.s19 directly onto chip. Solution was to burn hc08sprg-kx8.abs.s19 first, then upload mjlJunior.s19 firmware using bootloader updater software.

I asked him to give me a RE with a list of Russian parts used. Megajolt has officially gone global.



ORIGINAL RE:
<blockquote>Саша �па�ибо твой ответ помог мне догодать�� в правильном решении, в�е проблемы на данном �тапе и�пытаний решены, правильный алгоритм такой:
1 чи�тый KX8 программируем �помощью P&E файлом hc08sprg-kx8.abs.s19
2 КХ8 в�тавл�ем в Megajolt
3 запу�каем hc08sprg и пропи�ываем файл mjlJunior.s19
4 включаем Megajolt отвечаем yes

И в�е победа Megajolt c РС и тво� программа работают проверенно :)

�апиши на форуме что вопро� �н�т, принимайте в р�ды пользователей Megajolt, �па�ибо что напи�ал �вою программу Tuner, удобна� мне нравит��, лучше чем оригинальна� на ЯВЕ</blockquote>

Oliver Sedlacek
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Location: The Chalfonts
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That would do it

Post by Oliver Sedlacek »

The megajolt firmware relys on the Flash Eprom write subroutines which are part of the bootloader. That's why it doesn't work if you don't program the bootloader into the chip.

dimdart
Posts: 0
Joined: Sat Nov 05, 2005 4:04 pm

All components on Motorola

Post by dimdart »

All components on Motorola us have, no possibility to bring generator, happened to to change him(it) on microcircuit 555LN1 analogue 74hc04 and simple quartz

brentp
Site Admin
Posts: 6293
Joined: Wed Jan 24, 2007 6:36 am

That's correct. The

Post by brentp »

That's correct. The bootloader is loaded first, then the bootloader loads the MJLJ firmware. That's how field upgrades are made possible.

Glad he has it working! He should post pictures of his setup!

Brent
Brent Picasso
CEO and Founder, Autosport Labs
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dimdart
Posts: 0
Joined: Sat Nov 05, 2005 4:04 pm

Will Today bring photo,

Post by dimdart »

Will Today bring photo, shall take photographs
Has Yesterday done fastening the sensor, has put(deliver)ed on machine, engine has earned, but presently appeared other problem as soon as engine begins to work gets lost relationship with computer, shall search for reason, shall try to change scheme of the stabilizer of the voltage and use other connection of the feeding EDIS and spool

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