Some obniz devices allow you to use the UART interface as a console for configuration and monitoring.
UART Settings
The communication settings are fixed as follows:
- Connections: TX, RX, GND only
- Baud Rate: 115200 bps
- Flow Control: None
- Parity: None
Output Content
The console outputs strings indicating network connection status and other system information. The specific format of these strings varies depending on the OS version. These logs contain internal system information; sharing this output with obniz support when an error occurs can help facilitate a smoother support process.
Menu
You can enter Menu Mode by sending the four-character string menu via the console. (For OS versions 3.5.0 or earlier, sending the character s immediately after startup will enter Menu Mode.)
The system will pause its normal operations and enter a standby state for configuration as soon as it enters Menu Mode. If no user action is taken for a certain period, the device will automatically restart and return to normal operation.
Please refer to the Settings page for details on available configuration options.
Disabling the Console
(OS7 or Later)
Since the console utilizes a UART interface, you may want to disable it in certain scenarios.
Example: If a device has only two UART ports and you need both for LTE communication and another peripheral, you can disable the Console to free up the port.
You can disable the terminal console and prevent it from using UART by using the configuration JSON.
Configuration Example:
{
"hw": {
"terminal": false
}
}