{"id":90,"date":"2014-04-06T10:10:05","date_gmt":"2014-04-06T09:10:05","guid":{"rendered":"http:\/\/om2amb1.mavipet.sk\/?page_id=90"},"modified":"2017-02-22T18:19:40","modified_gmt":"2017-02-22T18:19:40","slug":"dds_9833","status":"publish","type":"page","link":"https:\/\/om2amb.mavipet.sk\/?page_id=90","title":{"rendered":"DDS_9833"},"content":{"rendered":"<p>Pre moje SDR som navrhol jednoduch\u00fd DDS z ovl\u00e1dan\u00edm cez rs232.<\/p>\n<p><a href=\"https:\/\/om2amb.mavipet.sk\/wp-content\/uploads\/2014\/02\/SDR_DDS.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-72 size-large\" src=\"https:\/\/om2amb.mavipet.sk\/wp-content\/uploads\/2014\/02\/SDR_DDS-1024x705.jpg\" alt=\"SDR_DDS schema\" width=\"700\" height=\"482\" srcset=\"https:\/\/om2amb.mavipet.sk\/wp-content\/uploads\/2014\/02\/SDR_DDS-1024x705.jpg 1024w, https:\/\/om2amb.mavipet.sk\/wp-content\/uploads\/2014\/02\/SDR_DDS-300x206.jpg 300w, https:\/\/om2amb.mavipet.sk\/wp-content\/uploads\/2014\/02\/SDR_DDS-768x528.jpg 768w, https:\/\/om2amb.mavipet.sk\/wp-content\/uploads\/2014\/02\/SDR_DDS-1200x826.jpg 1200w, https:\/\/om2amb.mavipet.sk\/wp-content\/uploads\/2014\/02\/SDR_DDS.jpg 2048w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n<p>CPU okrem konfigur\u00e1cie DDS \u010dipu zabezpe\u010duje e\u0161te prep\u00ednanie filtrov a sp\u00ednanie \u00fatlmov\u00e9ho \u010dl\u00e1nku.<\/p>\n<p>Filtre\u00a0 sa prep\u00ednaj\u00fa pomocou pinou 1 a\u017e 5 konektoru &#8220;filter switch&#8221;.<\/p>\n<ul>\n<li>Pin 1 &#8211; Filter \u010d\u00edslo 4<\/li>\n<li>Pin 2 &#8211; Filter \u010d\u00edslo 3<\/li>\n<li>Pin 3 &#8211; Filter \u010d\u00edslo 2<\/li>\n<li>Pin 4 &#8211; Filter \u010d\u00edslo 1<\/li>\n<li>Pin 5 &#8211; By-pass<\/li>\n<\/ul>\n<p>FW ale pozn\u00e1 7 filtrov, \u010fal\u0161ie sa ovl\u00e1daj\u00fa cez piny PB5 a\u017e PB7 CPU.<\/p>\n<p>Pri h\u013eadan\u00fd spr\u00e1vneho filtru sa ide po porad\u00ed a prepne sa na prv\u00fd n\u00e1jden\u00fd filter ktor\u00fd je priepustn\u00fd pre dan\u00fa frekvenciu.\u00a0 V pr\u00edpade \u017ee sa nen\u00e1jde vhodn\u00fd filter pou\u017eije sa &#8220;filter&#8221; By-pass. Pomocou pr\u00edkazu B1 sa vyh\u013ead\u00e1vanie vypne a v\u017edy sa pou\u017eije By-pass.<\/p>\n<p>Pomocou pinu 6 na konektore &#8220;filter switch&#8221; sa ovl\u00e1da \u00fatlmov\u00fd \u010dl\u00e1nok na vstupe.<\/p>\n<p>FW pou\u017e\u00edva jednoduch\u00fd protokol na ovl\u00e1danie. Ten je navrhnut\u00fd tak aby bol jednoduch\u00fd pre CPU ale mohol ho zad\u00e1va\u0165 aj \u010dlovek cez Termin\u00e1l.\u00a0 Komunik\u00e1cia je cez RS232 vo form\u00e1te:<\/p>\n<ul>\n<li>Txxxxxxxx \u2013 \u201cTune\u201d + frekvencia v Hz<\/li>\n<li>t \u2013 Print aktu\u00e1lnej frekvencie<\/li>\n<li>S \u2013 Save aktu\u00e1lnej frekvencie, by-pass a \u00fatlmov\u00e9ho \u010dl\u00e1nku<\/li>\n<li>Fpxxxxxxxxxyyyyyyyyyy \u2013 Filter + \u010d\u00edslo + spodn\u00e1 frekvencia + horna frekvencia, Nastavenie sa automaticky z\u00e1lohuje do EEPROM<\/li>\n<li>fp &#8211;\u00a0 Filter + \u010d\u00edslo \u00a0 v\u00fdpis nastavenia dan\u00e9ho filtra.<\/li>\n<li>Ax Zapnutie x=1 vypnutie x=0 \u00fatlmov\u00e9ho \u010dl\u00e1nku<\/li>\n<li>Bx Zapnutie x=1 vypnutie x=0 bypassu (bude v\u017edy zapnut\u00fd pin 0 v\u00fdberu filtrov)<\/li>\n<\/ul>\n<p>Vstup je citliv\u00fd na ve\u013ekos\u0165 p\u00edsma a nedovo\u013euje \u00fapravu. Odpove\u010f CPU:<\/p>\n<ul>\n<li>? \u2013 Nezn\u00e1my pr\u00edkaz<\/li>\n<li>Ok \u2013 Pr\u00edkaz akceptovan\u00fd<\/li>\n<li>Err \u2013 Chyba v zad\u00e1van\u00ed pr\u00edkazu<\/li>\n<li>Frekvencia vyp\u00ed\u0161e 8 miestnu frekvenciu v Hz<\/li>\n<li>frekvencie filtra \u2013 vyp\u00ed\u0161e medzn\u00e9 frekvencie filtra. Najprv doln\u00fa a na \u010fal\u0161\u00ed riadok horn\u00fa.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Pre moje SDR som navrhol jednoduch\u00fd DDS z ovl\u00e1dan\u00edm cez rs232. CPU okrem konfigur\u00e1cie DDS \u010dipu zabezpe\u010duje e\u0161te prep\u00ednanie filtrov a sp\u00ednanie \u00fatlmov\u00e9ho \u010dl\u00e1nku. Filtre\u00a0 sa prep\u00ednaj\u00fa pomocou pinou 1 a\u017e 5 konektoru &#8220;filter switch&#8221;. Pin 1 &#8211; Filter \u010d\u00edslo 4 Pin 2 &#8211; Filter \u010d\u00edslo 3 Pin 3 &#8211; Filter \u010d\u00edslo 2 Pin 4 &#8230; <span class=\"more\"><a class=\"more-link\" href=\"https:\/\/om2amb.mavipet.sk\/?page_id=90\">[Read more&#8230;]<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":47,"menu_order":1,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["entry","page","publish","author-kylian","post-90"],"_links":{"self":[{"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=\/wp\/v2\/pages\/90","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=90"}],"version-history":[{"count":1,"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=\/wp\/v2\/pages\/90\/revisions"}],"predecessor-version":[{"id":146,"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=\/wp\/v2\/pages\/90\/revisions\/146"}],"up":[{"embeddable":true,"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=\/wp\/v2\/pages\/47"}],"wp:attachment":[{"href":"https:\/\/om2amb.mavipet.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=90"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}