LVGL Chart Ticks

WildDogOne · January 4, 2025, 1:04pm

Hello Everyone,

I am toying around with vobot mini dock to display power charts of my coffeemachine.

However, it seems like I am running into a problem displaying the ticks and labels on the Y axis.
The docker test setup works totally well using “set_axis_tick”, if I load the code to my dock it errors out telling me that this function does not exist.

github.com

WildDogOne/coffeebot/blob/04a61a5b945be2d0b78f0f89e7907cc357a76c6e/init.py#L63


      
          
          # Create a chart if it doesn't exist
          if not chart:
              chart = lv.chart(lv.scr_act())
              chart.set_size(320 - graph_offset, 240)
              chart.center()
              #chart.align(lv.ALIGN.CENTER, int(graph_offset / 2), 0)
              chart.set_range(lv.chart.AXIS.PRIMARY_Y, 0, 1300)
              # TODO: Figure out how to set the number of ticks
              # LVGL v9.1 uses scale instead of set_axis_tick
              #chart.set_axis_tick(lv.chart.AXIS.PRIMARY_Y, 3, 0, 5, 1, True, graph_offset)
              #chart.set_total_tick_count(lv.chart.AXIS.PRIMARY_Y, 5)
              # Add a data series if it doesn't exist
              series = chart.add_series(lv.color_hex(0xFF0000), lv.chart.AXIS.PRIMARY_Y)
          
          # Clear the existing data points
          chart.set_point_count(len(power_graph))
          chart.set_all_value(series, 0)
          
          # Set data points
          for value in power_graph:

Checking the documentation of LVGL 9.1 I noticed that set_axis_tick has been deprecated.
The problem now seems that the “vobot/mini-dock-app-dev:latest” container does not have the correct LVGL version.

Anyhow, I did try to migrate my code, but it’s impossible to debug like this.
Any hints on how to get the ticks working?

Vobot · January 7, 2025, 6:07am

Hello,

We have completed the update of docker, and the LVGL version has been updated to 9.1. Please execute the following command to update:
docker pull vobot/mini-dock-app-dev:latest

If you have any questions about the use of the product, please feel free to contact us.

WildDogOne · January 7, 2025, 8:28am

Very nice, it works now, thanks