RIALTO SBC/Interfaces and Connectors/Console

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History
Issue Date Notes
2023/01/09 First documentation release



Console interface[edit | edit source]

Description[edit | edit source]

The Console interface is available on the RIALTO SBC to the following connector: J42 is a Phoenix 4x1x2.54mm pin header connector. On this connector is mapped the console interface (UART1).

Console connector

Signals[edit | edit source]

The following tables describe the interfaces signals:

J42[edit | edit source]

Pin# Pin name Pin function Pin Notes
1 TX UART1_TX LVTTL signal
2 RX UART1_RX LVTTL signal
3 VDD 3V3 powered by internal PMIC
4 DGND GND

Device mapping[edit | edit source]

UART1 is mapped to /dev/ttymxc0 device in Linux. The peripheral is used as the default serial console, both for the bootloader and the kernel.

Device usage[edit | edit source]

To connect to the debug serial port:

  1. connect an UART transceiver (eg: TTL-232RGVIP-WE) to J42 and to a workstation
    • leave J42.3 unconnected if the transceiver is self powered
  2. start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,8N1