Transclusion: IOT-GATE-iMX8: RS485 / RS232
Revision as of 08:20, 14 September 2020 by imported>Uri.mashiach (Created page with "IOT-GATE-iMX8 / SBC-IOT-iMX8 features a half-duplex RS485 port.<br> The RS485 interface is routed to rear panel terminal block connector ([http://192.168.10.106/mediawiki/inde...")
IOT-GATE-iMX8 / SBC-IOT-iMX8 features a half-duplex RS485 port.
The RS485 interface is routed to rear panel terminal block connector (see drawing).
RS485 / RS232 connector pin-out in RS485 mode:
| Pin Number | RS485 Functionality |
| 1 | NEG A/- |
| 2 | NEG B/+ |
| 3 | Ground |
| 6 | Ground |
Example
Serial terminal emulator application can be used to test the RS485 port.
- Use the following command to start Minicom with the user space device of the RS485 (/dev/ttymxc0).
root@iot-gate-imx8:~# minicom -D /dev/ttymxc0
- Follow the following steps to disable hardware flow control
- Open the menu "Configure Minicom" with CTRL-a followed by the letter 'o'.
- Select "Serial port setup"
- Press the letter 'f'.
- Press the Esc key twice.
- The characters that are typed in the terminal are transmitted to the RS485 port.
- The characters that are received from the RS485 port are displayed in the terminal.
- Press CTRL-a followed by the letter 'x' to exit from Minicom
