Is there minimum time needed to send LV_EVENT?

How-to
1

Description

case 1:

  1. If you touch a button on the screen, a bar is created on the button.
  2. If the button is continuously touched, the LV_EVENT_PRESSING event occurs every 30ms and the bar progresses.
  3. It works.

case 2:

  1. When the external button is pressed, the button task is executed by an external interrupt.
  2. In the button task, LV_EVENT_PRESSING event is delivered at 90 us intervals.
    lv_event_send(obj, LV_EVENT_PRESSING);
  3. Hard fault occurs while bar progressing is in progress

=> It works by inserting a delay time (vTaskDelay(10ms)) in the button task and sending the event at 10ms intervals.

Is there a minimum amount of time required for events to occur in succession?

2

No, there shouldn’t be any minimum. It sounds like you are using FreeRTOS, since you have mentioned vTaskDelay. Are you using mutexes correctly?

3

I want to change screen after one animation image was finished, there is no event given on image. any link then plz share