Trying to set a custom tick source

How-to
1

Description

How to set a custom tick source function

What MCU/Processor/Board and compiler are you using?

ESP32/VScode/PlatformIO

What LVGL version are you using?

7.10

What do you want to achieve?

I’d like to set a custom tick function but the define generated refers to a string, not to the function itself.

What have you tried so far?

I set the HAL values using menuconfig in lvlg component menu. Hal settings in sdkconfig are:

#
# HAL Settings
#
CONFIG_LV_TICK_CUSTOM=y
CONFIG_LV_TICK_CUSTOM_INCLUDE="esp_timer.h"
CONFIG_LV_TICK_CUSTOM_SYS_TIME_EXPR="(long)esp_timer_get_time()/1000"
# end of HAL Settings

The generated line in sdkconfig.h is

#define CONFIG_LV_TICK_CUSTOM_SYS_TIME_EXPR "(long)esp_timer_get_time()/1000"

Shouldn’t it be as follows?

#define CONFIG_LV_TICK_CUSTOM_SYS_TIME_EXPR (long)esp_timer_get_time()/1000

The result is that the the function lv_tick_get() returns the pointer to the string of the define, not the result of the function. Am I doing something wrong in menuconfig?

Code to reproduce

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Screenshot and/or video

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2

Can you set the HAL setting to:

CONFIG_LV_TICK_CUSTOM_SYS_TIME_EXPR=(long)esp_timer_get_time()/1000
3

I can’t have menuconfig setting the variable correctly, as it generates a string, not an expression (see my description). If I modify sdkconfig manually the expression is not recognized, and the variable CONFIG_LV_TICK_CUSTOM_SYS_TIME_EXPR is set to millis().

1 Like
4

(cc @Carlos_Diaz)

5

Any changes? Problem is still exist in 8.1