Variables

This is documentation of variables for LYNX-front application.

info

Documentation for variables in folder /common is here: Common block

Parameters

shutdown_longpress

A long press on BTN1 will shut down the display and controller. This is a delay for the long press in [ms].
If set to 0, the shutdown functionality on BTN1 is disabled.

info

This feature requires HW functionality called "flip-flop" to be enabled in the display and controller. (default in standard configuration)

info

• RTC battery is not present in standard display version
• Showing temperatures require LYNX v5.1.x and newer
• To properly convert motor temperature from resistance to degree, check parameters in /mtemp folder.

options

options

Value	Name	Description
1	GPIO1 & 2 Turn signals	If voltage on GPIO1 it GPIO2 is higher thna 10V, turn signal LED is on
2	BTN 2 Map switch	This will enable switching maps by BTN 2
4	GPIO1 and GPIO2 map switch	Using GPIO1 and GPIO you can change maps up and down. This disables map switch from BTN4(GPIO0)
8	Enable 3 digit speed	Increases maximum speed displayed on the main screen from 99 to 199. The third digit will appear only when speed is higher than 99
16	UP/DN map switch on release	Change maps UP/DN on BTN release. Use this if you want to use the button for long press in the controller for other function.
32	No automatic shutdown	Disable automatic display shutdown after 60s of no controller connection.
64	GDIN0 map switch	Use GPIO0 for up/down map switching. Signal >0 switches up, -1 switches down.

note

GPIO1 & 2 Turn signals

There are 2 posibilities how to controll turn signal LED. First is one hardware input dedigated for the LED. Second is let the MCU to controll the LED and use GPIO as input. The second option allows you to use 2 separate signals (left and right).

Please take attention to the display hardware configuration. If the turn signal LED is controlled by MCU or by 12V signal, is done by hardware configuration.

in_btn4

The display expects 4 buttons for control. One of them is external. The value of this parameter is the ID of the input for the external button.

The value must be the ID of the GDIN input on the display.

in_btn4GPIO0 - default value (16)GPIO1 (17)GPIO2 (18)

tip

BTN4 is used as a map change button, or stopwatch start/stop button.

simulate

info

If you set this value to something other than 0, the display will simulate the controller connection. This is useful for testing the display without the controller.

simulateNo simulation (0)Simulate connection (-1)Freeze the simulation (-10)Simulate LYNX controller with given mode (1)

Motor temperature conversion

On some screen is option to show motor temperature. The controller is sending motor temperature in resistance and the display will convert it to the temperature in degrees.

/mtemp/R_25

Sensor resistance at 25°C in [ohm]

/mtemp/Bconst

Sensor constant.

• Use positive value if your sensor is PTC
• Use negative value if your sensor is NTC