Ken Van Hoeylandt
d6baf40d0b
* Implemented LVGL with SDL for simulator * cleanup * added SDL to build * build fix * mutex fixes * sim app cleanup and improvements * docs updated * fix for sdl? * fix for SDL cmake setup
116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
#include "lvgl_task.h"
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#include "lvgl_hal.h"
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#include "tactility_core.h"
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#include "thread.h"
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#include "ui/lvgl_sync.h"
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#include <stdbool.h>
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#include "FreeRTOS.h"
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#include "semphr.h"
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#define TAG "lvgl_task"
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// Mutex for LVGL drawing
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static QueueHandle_t lvgl_mutex = NULL;
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static uint32_t task_max_sleep_ms = 10;
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// Mutex for LVGL task state (to modify task_running state)
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static QueueHandle_t task_mutex = NULL;
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static bool task_running = false;
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static bool task_lock(int timeout_ticks) {
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assert(task_mutex != NULL);
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return xSemaphoreTakeRecursive(task_mutex, timeout_ticks) == pdTRUE;
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}
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static void task_unlock() {
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assert(task_mutex != NULL);
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xSemaphoreGiveRecursive(task_mutex);
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}
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static void task_set_running(bool running) {
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assert(task_lock(configTICK_RATE_HZ / 100));
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task_running = running;
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task_unlock();
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}
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static bool task_is_running() {
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assert(task_lock(configTICK_RATE_HZ / 100));
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bool result = task_running;
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task_unlock();
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return result;
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}
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static bool lvgl_lock(int timeout_ticks) {
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assert(lvgl_mutex != NULL);
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return xSemaphoreTakeRecursive(lvgl_mutex, timeout_ticks) == pdTRUE;
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}
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static void lvgl_unlock() {
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assert(lvgl_mutex != NULL);
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xSemaphoreGiveRecursive(lvgl_mutex);
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}
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static void lvgl_task_init() {
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if (lvgl_mutex == NULL) {
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TT_LOG_D(TAG, "init: creating lvgl mutex");
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lvgl_mutex = xSemaphoreCreateRecursiveMutex();
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}
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if (task_mutex == NULL) {
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TT_LOG_D(TAG, "init: creating task mutex");
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task_mutex = xSemaphoreCreateRecursiveMutex();
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}
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tt_lvgl_sync_set(&lvgl_lock, &lvgl_unlock);
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}
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static void lvgl_task_deinit() {
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if (lvgl_mutex) {
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vSemaphoreDelete(lvgl_mutex);
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lvgl_mutex = NULL;
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}
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if (task_mutex) {
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vSemaphoreDelete(task_mutex);
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task_mutex = NULL;
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}
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#if LV_ENABLE_GC || !LV_MEM_CUSTOM
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lv_deinit();
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#endif
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}
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void lvgl_task(TT_UNUSED void* arg) {
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lvgl_hal_init();
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lvgl_task_init();
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uint32_t task_delay_ms = task_max_sleep_ms;
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task_set_running(true);
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while (task_is_running()) {
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if (lvgl_lock(0)) {
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task_delay_ms = lv_timer_handler();
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lvgl_unlock();
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}
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if ((task_delay_ms > task_max_sleep_ms) || (1 == task_delay_ms)) {
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task_delay_ms = task_max_sleep_ms;
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} else if (task_delay_ms < 1) {
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task_delay_ms = 1;
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}
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vTaskDelay(pdMS_TO_TICKS(task_delay_ms));
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}
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lvgl_task_deinit();
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vTaskDelete(NULL);
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}
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bool lvgl_is_ready() {
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return task_running;
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}
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void lvgl_interrupt() {
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tt_check(lvgl_lock(TtWaitForever));
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task_set_running(false); // interrupt task with boolean as flag
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lvgl_unlock();
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}
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