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Diskussions- und Newsboard des DARC-Ortsverbandes I40  |  allgemeine Kategorie  |  OVI40 SDR Projekt (English AND German discussions around OVI40 SDR project) (Moderators: DF8OE, DL1PQ)  |  Topic: CPU hot and no connection to PC <- zurück vorwärts ->
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IK5WWP
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Re:CPU hot and no connection to PC
« Reply #45 on: 04. March 2018, 15:56:40 »

For example the message about the missing audiocodec is now disappeared.
In any case a big THANK YOU to all!!
73 de IK5WWP Lorenzo.
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DF5LI
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Re:CPU hot and no connection to PC
« Reply #46 on: 04. March 2018, 18:57:23 »

Congrats!  That took some doing, or in german -> das war eine schwere Geburt !

Now you only have to resolder the 144 pins of the mcu...  It's a snap 
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73,  Harri
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Re:CPU hot and no connection to PC
« Reply #47 on: 05. March 2018, 00:32:33 »

Lorenzo, I am happy to see the photos and read your success.

Sometimes it is not as easy as you hope - but never stick up. If you go on, you MIGHT loose. But if you stick up, you HAVE LOST.

I hope this was the biggest rock which was lying in your path to success.

Very good that you have struggled and now you are seeing LIFE on your OVI40 UI!

vy 73
Andreas
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peter_77
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Re:CPU hot and no connection to PC
« Reply #48 on: 05. March 2018, 11:03:11 »

Un parto difficile, ma alla fine ce l'abbiamo fatta! Ma vedi come un bon toscanello puo fare solvere la maggioranza dei problemi (ma provoca probabilmente oltre..?!) Mancha solo un bon bicchiere di chianti anchora.
Bon lavoro Lorenzo ! E adesso il parte RF...! 
« Last Edit: 07. March 2018, 15:34:08 by peter_77 » Logged
IK5WWP
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Re:CPU hot and no connection to PC
« Reply #49 on: 06. March 2018, 14:33:05 »

New day, old problem!
Again that stupid white screen and no leds on.
I can easily connect and program the MCU with DFUse and with ST-Link, but at restart nothing happen...
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DF8OE
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Re:CPU hot and no connection to PC
« Reply #50 on: 06. March 2018, 16:22:52 »

If MCU is recongnized by dfu protocol (when jumper is set) this is a hardware problem - mostly bad solderings around MCU.

If MCU is *NOT* recognized by dfu protocol often option bytes in MCU are scrambled. You can reset them to the correct values via STLink.

vy 73
Andreas
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IK5WWP
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Re:CPU hot and no connection to PC
« Reply #51 on: 06. March 2018, 17:10:37 »

Yes, MCU is recognized in DFU mode with the jumper on and yes, this is an hardware problem...
And this is not a good news.
I have to investigate, investigate, investigate...
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Diskussions- und Newsboard des DARC-Ortsverbandes I40  |  allgemeine Kategorie  |  OVI40 SDR Projekt (English AND German discussions around OVI40 SDR project) (Moderators: DF8OE, DL1PQ)  |  Topic: CPU hot and no connection to PC <- zurück vorwärts ->
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