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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Jeden student se mi asi na mÄ›sĂc sekl s nÄ›jakĂ˝m ESP projektem dĂky podobnĂ© vÄ›ci. SedÄ›li jsme nad tĂm hodiny a hodiny a nemohli odhalit, kde je chyba. Nakonec se ukázal jako vadnĂ˝ právÄ› USB – TTL
pĹ™evodnĂk, kterĂ˝ se tvářil naprosto funkÄŤnÄ›, akorát pĹ™i pĹ™enosu obÄŤas nÄ›jakĂ˝ bajt zmršil. Projevovalo se to tak, Ĺľe obÄŤas se ESPÄŤko ĂşplnÄ› seklo, obÄŤas program napĹŻl fungoval, nÄ›kdy uĹľ se zdálo, Ĺľe je to OK, ale pak to nÄ›kde krašnulo. Byla to fakt blbá závada!
A zvláštnĂ bylo, Ĺľe nahranĂ˝ program se vĹľdy ĂşspěšnÄ› ověřil. Skoro bych si myslel, Ĺľe ten pĹ™evodnĂk mÄ›l rozladÄ›nĂ˝ krystal a tĂm dával nÄ›jakou hraniÄŤnĂ hodnotu baudratu, která nÄ›kterĂ© bajty mršila, ale v takovĂ©m pĹ™ĂpadÄ› bych oÄŤekával, Ĺľe se to zmršà vĹľdy na
stejnĂ©m mĂstÄ› (kombinaci bajtĹŻ), coĹľ rozhodnÄ› neplatilo. KdyĹľ jsme pĹ™evodnĂk vyhodili a nahradili jinĂ˝m, bylo okamĹľitÄ› po problĂ©mech.
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Jakub Šerých <o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Hw-list <hw-list-bounces@list.hw.cz> <b>On Behalf Of
</b>Jirka Mww<br>
<b>Sent:</b> Sunday, July 30, 2023 1:31 PM<br>
<b>To:</b> HW konference <hw-list@list.hw.cz><br>
<b>Subject:</b> Arduino Nano - potĂĹľe s komunikacĂ<o:p></o:p></p>
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<p class="MsoNormal">DobrĂ˝ den,<o:p></o:p></p>
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<p class="MsoNormal">Ĺ™ešĂm tady problĂ©m s destiÄŤkou Arduino Nano se sĂ©riovĂ˝m interfacem CH340. Mám celkem 3 kusy a všechny se chovajĂ stejnÄ›. K nÄ›kterĂ˝m verzĂm Arduino IDE se pĹ™ipojĂ, ale nejdou naprogramovat, nÄ›kdy se pĹ™ipojĂ jen na chvilku a pak pĹ™ipojenĂ(
t.j. pĹ™ĂslušnĂ˝ COM port ve správci zaĹ™ĂzenĂ) zmizĂ. Mám nÄ›kolik verzĂ Arduino IDE, v kaĹľdĂ©m se to chová trochu jinak, ale nikdy správnÄ›. Mám tady taky jen samotnĂ˝ pĹ™evodnĂk USB - TTL serial s tĂm samĂ˝m obvodem CH340 a ten se vĹľdycky pĹ™ipojĂ normálnÄ›, takĹľe
problĂ©m s driverem CH340 a USB porty na PC zatĂm vyluÄŤuji. Hledal jsem na Internetu, nÄ›jakĂ© podobnĂ© potĂĹľe jsou popsány, ale Ĺ™ešenĂ, kterĂ© by mi pomohlo, jsem nenašel. Nemáte nÄ›kdo nÄ›jakĂ˝ tip, na co se zaměřit ? <o:p></o:p></p>
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<p class="MsoNormal">Zdravi<br>
Jirka SloupenskĂ˝ OK1MWW<o:p></o:p></p>
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<p class="MsoNormal"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank"><span style="text-decoration:none"><img border="0" width="46" height="29" style="width:.4791in;height:.3055in" id="_x0000_i1025" src="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif"></span></a><o:p></o:p></p>
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<p class="MsoNormal" style="line-height:13.5pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#41424E">Neobsahuje žádné viry.<a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank"><span style="color:#4453EA">www.avast.com</span></a><o:p></o:p></span></p>
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