<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
pre
{mso-style-priority:99;
mso-style-link:"Formátovaný v HTML Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
span.FormtovanvHTMLChar
{mso-style-name:"Formátovaný v HTML Char";
mso-style-priority:99;
mso-style-link:"Formátovaný v HTML";
font-family:Consolas;}
span.StylE-mailovZprvy20
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=CS link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Expert hlasi, ze podle typu pameti STM32 u FMC pouziva spekulativni cteni. O zapisu nevim, ale v oblasti typu pamet je to mozne, u device ne, stejne tak cteni.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Takze pouzit MPU je nejlepší volba.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Tomas<o:p></o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></a></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Hw-list [mailto:hw-list-bounces@list.hw.cz] <b>On Behalf Of </b>konfera@efton.sk<br><b>Sent:</b> Wednesday, May 6, 2020 11:26 AM<br><b>To:</b> HW-news <hw-list@list.hw.cz><br><b>Subject:</b> Re: STM32F7 zahada FMC - vyreseno<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Toto tu podla mna nie je vysvetlenie a prestavenie do Device zakryva nejaky iny mechanizmus (a ani zapnuta cache by to podla mna nevysvetlila). <br><br>Ak by sa to stalo pri citani (co viem ze sa stava) tak to je v poriadku, to je z pohladu Normal pamate koser, ale zapis nie, ved to nepochybne poskodi obsah pamate.<br><br>Mohli by to pritomni experti z ST prosim okomentovat?<br><br>Dakujem<br><br>wek<o:p></o:p></p><div><p class=MsoNormal>On 6 May 2020 09:51:21 CEST, Jaroslav Buchta <<a href="mailto:jaroslav.buchta@hascomp.cz">jaroslav.buchta@hascomp.cz</a>> wrote:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><p class=MsoNormal>Aha, tak jsem zapomel zase na ruzne typy pristupu do pameti, device memory atd... <o:p></o:p></p></div><div><p class=MsoNormal>Resi to remap a bude to snad resitelne i konfigurtaci MMU.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="https://community.st.com/s/question/0D50X00009XkWQE/stm32h743ii-fmc-8080-lcd-spurious-writes">https://community.st.com/s/question/0D50X00009XkWQE/stm32h743ii-fmc-8080-lcd-spurious-writes</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Dne 06.05.2020 v 8:33 Jaroslav Buchta napsal(a):<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Mam na FMC pripojeny OLED displej, 8b dat, konfigurace pres CubeMX. DCACHE MCU zakazana. <br><br>Kdyz provedu radek <br><br>*(volatile uint8_t *)0x60010000 = 0xaa; <br><br>vyvola to 2x NE1 a v kazdem cyklu 4x NWE <br><br>V Assembleru to vypada OK <br><br>237 *(volatile uint8_t *)0x60010000 = 0xaa; <br>08000bf8: ldr r3, [pc, #24] ; (0x8000c14 <main+172>) <br>08000bfa: movs r2, #170 ; 0xaa <br>08000bfc: strb r2, [r3, #0] <br><br>Konfigurace je jako LCD interface 8 bitu. FIFO zakazana. Stejne se to chova pri krokovani jako pri normalnim behu. <br><br>jednotlivy zapis vypada z hlediska NWE dle obrazku v priloze. <br><br>Napada nekoho, kde muze byt problem? <br><br><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>HW-list mailing list - sponsored by <a href="http://www.HW.cz">www.HW.cz</a><o:p></o:p></pre><pre><a href="mailto:Hw-list@list.hw.cz">Hw-list@list.hw.cz</a><o:p></o:p></pre><pre><a href="http://list.hw.cz/mailman/listinfo/hw-list">http://list.hw.cz/mailman/listinfo/hw-list</a><o:p></o:p></pre></blockquote><p><o:p> </o:p></p></blockquote></div></div></body></html>