Description
I’m facing problems recolouring label texts. Simulator hangs when a particular label’s, (and only that particular label’s), text is recoloured. Program terminates after a few seconds. It happens only for one label and I have commented it on the code.
What MCU/Processor/Board and compiler are you using?
I’m using LVGL Code blocks Simulator for windows (lv_sim_codeblocks_win-dev-7.0)
What LVGL version are you using?
7.11
What do you want to achieve?
I want to be able to recolour text on labels
What have you tried so far?
I tried commenting leaving the label as it was. Simulator does not hang. It hangs only when I try to recolour it.
Code to reproduce
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <time.h>
#include "lvgl/lvgl.h"
#include "lv_drivers/win_drv.h"
#include "lv_examples/src/lv_demo_widgets/lv_demo_widgets.h"
#include <windows.h>
static void hal_init(void);
static int tick_thread(void *data);
char curtime[20];
char curdate[20];
char hrte[11];
char botem[11];
char stps[11];
lv_obj_t * battery;
lv_obj_t * bt;
lv_obj_t * clocker;
lv_obj_t * dater;
lv_obj_t * heartrate;
lv_obj_t * btemp;
lv_obj_t * step;
lv_obj_t * homescr;
unsigned int count = 0;
unsigned int hrate = 0;
unsigned int bodytemp = 0;
unsigned int stpeno = 0;
int main(int argc, char** argv)
{
/*Initialize LittlevGL*/
lv_init();
/*Initialize the HAL for LittlevGL*/
hal_init();
/*Check the themes too*/
lv_disp_set_default(lv_windows_disp);
/*Run the demo*/
homescr = lv_scr_act();
lv_obj_set_style_local_bg_color(homescr, LV_OBJ_PART_MAIN, 0, LV_COLOR_WHITE);
battery = lv_label_create(homescr, NULL);
lv_obj_align(battery, NULL, LV_ALIGN_IN_TOP_RIGHT, 5, 0);
bt = lv_label_create(homescr, NULL);
lv_obj_align(bt, NULL, LV_ALIGN_IN_TOP_RIGHT, -12, 0);
lv_label_set_text(bt, LV_SYMBOL_BLUETOOTH);
clocker = lv_label_create(homescr, NULL);
lv_label_set_recolor(clocker, true);
lv_obj_align(clocker, NULL, LV_ALIGN_CENTER, -10, -30);
dater = lv_label_create(homescr, NULL);
lv_obj_align(dater, NULL, LV_ALIGN_IN_TOP_LEFT, 0, 0);
heartrate = lv_label_create(homescr, NULL);
lv_label_set_recolor(heartrate, true);
lv_obj_align(heartrate, NULL, LV_ALIGN_IN_BOTTOM_LEFT, 0, -60);
btemp = lv_label_create(homescr, NULL);
lv_label_set_recolor(btemp, true);
lv_obj_align(btemp, NULL, LV_ALIGN_IN_BOTTOM_LEFT, 0, -40);
step = lv_label_create(homescr, NULL);
lv_label_set_recolor(step, true); // Simulator does not hang when I comment this line out.
lv_obj_align(step, NULL, LV_ALIGN_IN_BOTTOM_LEFT, 0, -20);
while(1)
{
/* Periodically call the lv_task handler.
* It could be done in a timer interrupt or an OS task too.*/
time_t rawtime = time(NULL);
struct tm *ptm = localtime(&rawtime);
count = 1 + rand() % 10;
bodytemp = 1 + rand() % 10;
hrate = 1 + rand() % 10;
stpeno = 1 + rand() % 10;
blvl(count);
sprintf(curtime, "#0008ff %02d:%02d:%02d", ptm->tm_hour, ptm->tm_min, ptm->tm_sec);
sprintf(curdate, "%02d/%02d/%02d", ptm->tm_mday, ptm->tm_mon + 1, ptm->tm_year + 1900);
lv_label_set_text(clocker, curtime);
lv_label_set_text(dater, curdate);
sprintf(hrte, "#ff0000 Heart Rate: %d BPM", hrate);
lv_label_set_text(heartrate, hrte);
sprintf(botem, "#ffdd00 Body Temp: %d 'C", bodytemp);
lv_label_set_text(btemp, botem);
sprintf(stps, "#008000 Steps: %d", stpeno); // Not able to re colour this label without the simulator getting stuck.
lv_label_set_text(step, stps);
lv_task_handler();
usleep(1000); /*Just to let the system breath*/
}
return 0;
}
void blvl (int x)
{
if (0 <= x && x <= 1)
{
lv_label_set_text(battery, LV_SYMBOL_BATTERY_EMPTY);
}
else if (2 <= x && x <= 3)
{
lv_label_set_text(battery, LV_SYMBOL_BATTERY_1);
}
else if (4 <= x && x <= 5)
{
lv_label_set_text(battery, LV_SYMBOL_BATTERY_2);
}
else if (6 <= x && x <= 7)
{
lv_label_set_text(battery, LV_SYMBOL_BATTERY_3);
}
else if (8 <= x && x <= 10)
{
lv_label_set_text(battery, LV_SYMBOL_BATTERY_FULL);
}
usleep(1000);
}
static void hal_init(void)
{
#if !WIN32
/* Add a display
* Use the 'monitor' driver which creates window on PC's monitor to simulate a display*/
monitor_init();
lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv); /*Basic initialization*/
disp_drv.disp_flush = monitor_flush;
disp_drv.disp_fill = monitor_fill;
disp_drv.disp_map = monitor_map;
lv_disp_drv_register(&disp_drv);
/* Add the mouse (or touchpad) as input device
* Use the 'mouse' driver which reads the PC's mouse*/
mouse_init();
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv); /*Basic initialization*/
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read = mouse_read; /*This function will be called periodically (by the library) to get the mouse position and state*/
lv_indev_drv_register(&indev_drv);
/* Tick init.
* You have to call 'lv_tick_handler()' in every milliseconds
* Create an SDL thread to do this*/
SDL_CreateThread(tick_thread, "tick", NULL);
#else
/* This sets up some timers to handle everything. */
windrv_init();
#endif
}
#if !WIN32
static int tick_thread(void *data)
{
while(1) {
lv_tick_inc(1);
SDL_Delay(1); /*Sleep for 1 millisecond*/
}
return 0;
}
#endif
My bad.