在AT32F403ACGT7_LVGL开发板上结合LVGL图形库和PCF8563实时时钟芯片,以实现显示日期和时间的功能。以下是一个简单的示例代码,展示了如何在LVGL界面中显示日期和时间,并通过定时器定期更新:
复制#include "lvgl/lvgl.h" #include "pcf8563.h"
void lvgl_init(void) { lv_init();
static lv_disp_buf_t disp_buf; static lv_color_t buf[LV_HOR_RES_MAX * 10];
lv_disp_buf_init(&disp_buf, buf, NULL, LV_HOR_RES_MAX * 10);
lv_disp_drv_t disp_drv; lv_disp_drv_init(&disp_drv); disp_drv.hor_res = 480; disp_drv.ver_res = 320; disp_drv.flush_cb = my_disp_flush; disp_drv.buffer = &disp_buf; lv_disp_drv_register(&disp_drv); }
void pcf8563_init(void) { }
static void update_time_task(lv_task_t *task) { pcf8563_time_t current_time; pcf8563_get_time(¤t_time);
char time_str[20]; sprintf(time_str, "Date: %02d-%02d-%02d\nTime: %02d:%02d:%02d", current_time.year, current_time.month, current_time.day, current_time.hours, current_time.minutes, current_time.seconds);
lv_label_set_text(label, time_str); }
int main(void) { lvgl_init();
pcf8563_init();
lv_obj_t *label = lv_label_create(lv_scr_act(), NULL); lv_obj_align(label, NULL, LV_ALIGN_CENTER, 0, 0);
lv_task_create(update_time_task, 1000, LV_TASK_PRIO_HIGH, NULL);
while(1) { lv_task_handler(); }
return 0; }
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