Sergetsp

Hello, all, I am trying to confirm the actual status of UART support on the Banana Pi BPI-R4. Does the hardware UART work reliably and appear as a character device (e.g., /dev/uart*) under Armbian Linux? Also, what is the maximum baud rate supported by this port? And one more question: Does Armbian support the Quectel EP06 modem (LTE, mini PCIe)? Thank you in advance, SY, Serge

It is a good idea, thank you, but unfortunately, there is only one file /dev/ttyAML0 (console, imho) in /dev/ catalog. In dmesg I see: [ 0.740076] ffd24000.serial: ttyAML6 at MMIO 0xffd24000 (irq = 15, base_baud = 1500000) is a meson_uart [ 0.740274] serial serial0: tty port ttyAML6 registered but ttyAML6 is absent.

Hello! I have installed on Armbian 24.8.1 noble (ubuntu 24.04) . Also I have enabled "UARTa" , "UARTc" in armbian-config utility. In /boot/armbianEnv.txt file: overlays=uartA uartC for enable UART port. There are many files /dev/ttyS[0-7] exists. After this I try connected to this ports, but no success (minicom -D /dev/ttySx). Python sripts with pyserial module output: "i/o error". The same problem I have noticed with previous versions of Armbian. I have checked on other distributive (Khadas version of ubuntu server) the uart port is worked fine. Does Armbian supports Khadas VIM3 UART?

Hello! I have installed Armbian Bookworm on Khadas VIM3. Also I have enabled "UARTa" , "UARTc" in armbian-config utility. After reboot in file /boot/armbienEnv.txt I have checked options about uart (uarc). Also there are many files /dev/ttyS[0-7] exists. After this I try to connect "minicom -D /dev/ttyS0" (ttyS0, S1, and S3 etc). But no answer from my device on pins 15,16 OR 18,19 (this is a UARTA,UARTC, UART linux). Python sripts pyserial output: "i/o error". Does Armbian (Bookworm or Jammy) supports Khadas VIM3 UART? Are there successful cases? One more question: On Ubuntu Server files /dev/ttyS* are absent. However Khadas supports UART (on https://docs.khadas.com/products/sbc/common/applications/gpio/uart ) Thank you!