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fix(lvgl_tick): correct lvgl timer configuration. #295

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Merged
sunzhen222 merged 1 commit into from
Apr 17, 2025
Merged

fix(lvgl_tick): correct lvgl timer configuration. #295

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17 changes: 13 additions & 4 deletions core/embed/trezorhal/timer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,15 +2,19 @@

#include "lvgl.h"

#define LVGL_TIMER_PERIOD_MS 2

#define PRESCALE_VALUE 1000

static TIM_HandleTypeDef TimHandle;
static void lvgl_timer_init(void) {
__HAL_RCC_TIM4_CLK_ENABLE();

TimHandle.Instance = TIM4;

// 1 ms
TimHandle.Init.Period = 100 - 1;
TimHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / (2 * 1000)) - 1;
TimHandle.Init.Period =
SystemCoreClock / PRESCALE_VALUE / (2 * 1000) * LVGL_TIMER_PERIOD_MS - 1;
TimHandle.Init.Prescaler = PRESCALE_VALUE - 1;
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
TimHandle.Init.RepetitionCounter = 0;
Expand All @@ -30,6 +34,11 @@ static void lvgl_timer_init(void) {

void timer_init(void) { lvgl_timer_init(); }

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { lv_tick_inc(1); }
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
if (htim->Instance == TIM4) {
// Call lv_tick_inc() every LVGL_TIMER_PERIOD_MS ms
lv_tick_inc(LVGL_TIMER_PERIOD_MS);
}
}

void TIM4_IRQHandler(void) { HAL_TIM_IRQHandler(&TimHandle); }
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