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Spelling and other language fixes to documentation (#2293)

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This commit is contained in:
Rop Gonggrijp
2021-06-09 15:10:35 +02:00
committed by GitHub
parent 0be582b391
commit d0aaacafb6
63 changed files with 591 additions and 612 deletions
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8
docs/overview/timer.md
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@@ -4,7 +4,7 @@
```
# Timers
LVGL has a built-in timer system. You can register a function to have it be called periodically. The timers are handled and called in `lv_timer_handler()`, which needs to be called periodically every few milliseconds.
LVGL has a built-in timer system. You can register a function to have it be called periodically. The timers are handled and called in `lv_timer_handler()`, which needs to be called every few milliseconds.
See [Porting](/porting/task-handler) for more information.
The timers are non-preemptive, which means a timer cannot interrupt another timer. Therefore, you can call any LVGL related function in a timer.
@@ -12,7 +12,7 @@ The timers are non-preemptive, which means a timer cannot interrupt another time
## Create a timer
To create a new timer, use `lv_timer_create(timer_cb, period_ms, user_data)`. It will create an `lv_timer_t *` variable, which can be used later to modify the parameters of the timer.
`lv_timer_create_basic()` can also be used. It allows you to create a new timer without specifying any parameters.
`lv_timer_create_basic()` can also be used. This allows you to create a new timer without specifying any parameters.
A timer callback should have `void (*lv_timer_cb_t)(lv_timer_t *);` prototype.
@@ -52,13 +52,13 @@ You can modify some parameters of the timers later:
## Repeat count
You can make a timer repat only a given times with `lv_timer_set_repeat_count(timer, count)`. The timer will automatically be deleted after being called the defined times. Set the count to `-1` to repeat infinitly.
You can make a timer repeat only a given number of times with `lv_timer_set_repeat_count(timer, count)`. The timer will automatically be deleted after being called the defined number of times. Set the count to `-1` to repeat indefinitely.
## Measure idle time
You can get the idle percentage time of `lv_timer_handler` with `lv_timer_get_idle()`. Note that, it doesn't measure the idle time of the overall system, only `lv_timer_handler`.
It can be misleading if you use an operating system and call `lv_timer_handler` in an timer, as it won't actually measure the time the OS spends in an idle thread.
It can be misleading if you use an operating system and call `lv_timer_handler` in a timer, as it won't actually measure the time the OS spends in an idle thread.
## Asynchronous calls