The BSP device name matches the signal name used in the SoM datasheet.ĭebug (console) for the main OS (Cortex-A)ĭebug for the real-time OS (Cortex-M) or general-purpose The Apalis family has 4 pin-compatible UART interfaces. Reading the SoM datasheet and the article Device Tree Customization are good starting points. You will need to check how many UARTs are available on your specific SoM and modify the default pin muxing. Keep in mind that each SoM may have additional UART interfaces that you can use at the tradeoff of breaking pin compatibility. In this section, you will learn what UART interfaces are available on all Toradex SoMs within a family. Toradex SoMs are pin-compatible within a family, as long as you use the default pin muxing from the Toradex Embedded Linux BSP. This article is very useful if you plan to use UART for communication with other devices - often using RS-232 or RS-485 - but if you just want to access the Linux terminal on the default debug UART, make sure to follow the first lessons from our Quickstart Guide or alternatively read the article Configuring Serial Port Debug Console (Linux/U-Boot). Since BSP 5, we provide standard Toradex names by family, such as /dev/apalis-uart1, /dev/colibri-uarta and verdin-uart1, to enhance pin compatibility on a software level. Serial port (UART) access from userspace on Linux is provided through TTY devices under /dev.
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