Monkey

The Monkey module provides LVGL applications with a simple monkey test. Monkey Testing is a technique where the user tests the application or system by providing random inputs and checking the beha...

The Monkey module provides LVGL applications with a simple monkey test. Monkey Testing is a technique where the user tests the application or system by providing random inputs and checking the behavior or seeing whether the application or system will crash. This module provides this service as simulated random input to stress test an LVGL application.

Usage

First, enable LV_USE_MONKEY in lv_conf.h.

Next, declare a variable (it can be local) of type lv_monkey_config_t to define the configuration structure, initialize it using lv_monkey_config_init(cfg) then set its type member to the desired type of input device, and set the min and max values for its period_range and input_range members to set the time ranges (in milliseconds) and input ranges the Monkey module will use to generate random input at random times.

Next, call lv_monkey_create(cfg) to create the Monkey. It returns a pointer to the lv_monkey_t created.

Finally call lv_monkey_set_enable(monkey, true) to enable Monkey.

If you want to pause the monkey, call lv_monkey_set_enable(monkey, false). To delete it, call lv_monkey_delete(monkey).

Note that input_range has different meanings depending on the type input device:

• LV_INDEV_TYPE_POINTER: No effect, click randomly within the pixels of the screen resolution.
• LV_INDEV_TYPE_ENCODER: The minimum and maximum values of enc_diff.
• LV_INDEV_TYPE_BUTTON: The minimum and maximum values of btn_id. Use lv_monkey_get_indev to get the input device, and use lv_indev_set_button_points to map the key ID to the coordinates.
• LV_INDEV_TYPE_KEYPAD: No effect, Send random Keys.

Examples

Touchpad monkey example

Encoder monkey example

Button monkey example

API