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=== Configurare UART ศi activare PPS === Pe Raspberry Pi, consola seriala este activa implicit, ceea ce blocheaza utilizarea interfetei UART pentru modulul GPS. Pentru a putea folosi portul serial ศi semnalul PPS, este necesara dezactivarea consolei ศi activarea manuala a suportului UART ศi PPS. ==== Dezactivarea consolei seriale ==== Pentru dezactivarea consolei seriale editam fisierul /boot/firmware/cmdline.txt de unde stergem segmentul care contine consola, de obicei ceva de forma: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- --> console=serial0,115200 </code> Lasam restul liniei pe un singur rand, exact cum era. ==== Verificarea activarii UART ==== Editam fisierul /boot/firmware/config.txt unde ne asiguram ca exista: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- --> [all]  enable_uart=1 </code> ==== Activarea modulului PPST ==== Incarcam modulul PPS executand: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- --> echo 'pps-gpio' >> /etc/modules </code> Pentru configurarea pinului PPS (GPIO 18) editam din nou fisierul /boot/firmware/config.txt iar in partea de jos adaugam: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- --> dtoverlay=pps-gpio,gpiopin=18 </code> Aceasta indica kernelului ca semnalul PPS este conectat la GPIO 18. Dupa ce efectuam aceste modificari, oprim systemul in vederea conectarii modului de GPS.
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