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LV_APP_COM_TYPE_... reworked, minor updates

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This commit is contained in:
Kiss-Vamosi Gabor
2016-12-30 21:48:58 +01:00
parent 038c4b6f9f
commit fc5e147fcf
8 changed files with 106 additions and 72 deletions
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53
lv_app/lv_app.c
View File

@@ -17,6 +17,7 @@
#include "../lv_appx/lv_app_example.h"
#include "../lv_appx/lv_app_sysmon.h"
#include "../lv_appx/lv_app_terminal.h"
/*********************
* DEFINES
@@ -49,6 +50,7 @@ static lv_action_res_t lv_app_win_open_anim_create(lv_app_inst_t * app);
static lv_action_res_t lv_app_win_minim_anim_create(lv_app_inst_t * app);
#if LV_APP_EFFECT_ANIM != 0 && LV_APP_ANIM_WIN != 0
static void lv_app_win_close_anim_cb(lv_obj_t * app_win);
static void lv_app_win_minim_anim_cb(lv_obj_t * app_win);
#endif
static void lv_app_init_icons(void);
@@ -134,6 +136,11 @@ void lv_app_init(void)
dsc = ll_ins_head(&app_dsc_ll);
*dsc = lv_app_sysmon_init();
#endif
#if USE_LV_APP_TERMINAL != 0
dsc = ll_ins_head(&app_dsc_ll);
*dsc = lv_app_terminal_init();
#endif
}
/**
@@ -168,10 +175,17 @@ void lv_app_close(lv_app_inst_t * app)
lv_app_win_close(app);
lv_app_sc_close(app);
/*Clear the connection list*/
lv_app_con_del(app, NULL);
lv_app_con_del(NULL, app);
app->dsc->app_close(app);
dm_free(app->app_data);
dm_free(app->name);
ll_rem(&app_inst_ll, app);
dm_free(app);
}
/**
@@ -246,7 +260,6 @@ void lv_app_sc_close(lv_app_inst_t * app)
*/
lv_obj_t * lv_app_win_open(lv_app_inst_t * app)
{
/*Close the app list if opened*/
if(app_list != NULL) {
lv_obj_del(app_list);
@@ -290,23 +303,20 @@ void lv_app_win_close(lv_app_inst_t * app)
* @param app_send pointer to the application which is sending the message
* @param type type of data from 'lv_app_com_type_t' enum
* @param data pointer to the sent data
* @param len length of 'data' in bytes
* @param size length of 'data' in bytes
* @return number application which were received the message
*/
uint16_t lv_app_com_send(lv_app_inst_t * app_send, lv_app_com_type_t type , const void * data, uint32_t len)
uint16_t lv_app_com_send(lv_app_inst_t * app_send, lv_app_com_type_t type , const void * data, uint32_t size)
{
if(type == LV_APP_COM_TYPE_INV) return 0;
lv_app_con_t * con;
uint16_t rec_cnt = 0;
/*Add the notifications to the notice utility*/
if(type == LV_APP_COM_TYPE_NOTICE) {
lv_app_notice_add(data);
}
LL_READ(app_con_ll, con) {
if(con->sender == app_send) {
if(con->receiver->dsc->com_rec != NULL)
con->receiver->dsc->com_rec(app_send, con->receiver, type, data, len);
con->receiver->dsc->com_rec(app_send, con->receiver, type, data, size);
rec_cnt ++;
}
}
@@ -350,15 +360,16 @@ void lv_app_con_set(lv_app_inst_t * sender, lv_app_inst_t * receiver)
/**
* Delete a communication connection
* @param sender pointer to a data sender application
* @param receiver pointer to a data receiver application
* @param sender pointer to a data sender application or NULL to be true for all sender
* @param receiver pointer to a data receiver application or NULL to be true for all receiver
*/
void lv_app_con_del(lv_app_inst_t * sender, lv_app_inst_t * receiver)
{
lv_app_con_t * con;
LL_READ(app_con_ll, con) {
if(con->sender == sender && con->receiver == receiver) {
if((con->sender == sender || sender == NULL) &&
(con->receiver == receiver || receiver == NULL)) {
ll_rem(&app_con_ll, con);
dm_free(con);
}
@@ -444,7 +455,7 @@ lv_app_inst_t * lv_app_get_next(lv_app_inst_t * prev, lv_app_dsc_t * dsc)
/**
* Refresh the style of the applications
* */
void lv_app_refr_style(void)
void lv_app_style_refr(void)
{
lv_style_refr_all(NULL);
@@ -510,7 +521,7 @@ static void lv_app_init_desktop(void)
*/
lv_obj_align(sys_apph, NULL, LV_ALIGN_IN_RIGHT_MID, 0, 0);
lv_app_refr_style();
lv_app_style_refr();
}
/*-----------------------
@@ -720,6 +731,7 @@ static lv_action_res_t lv_app_win_close_action(lv_obj_t * close_btn, lv_dispi_t
lv_app_kb_close(false);
#if LV_APP_EFFECT_ANIM != 0 && LV_APP_EFFECT_OPA != 0 && LV_APP_ANIM_WIN != 0
lv_obj_anim(app->win, LV_ANIM_FLOAT_BOTTOM | ANIM_OUT, LV_APP_ANIM_WIN, 0, NULL);
lv_obj_anim(app->win, LV_ANIM_FLOAT_LEFT | ANIM_OUT, LV_APP_ANIM_WIN, 0, lv_app_win_close_anim_cb);
lv_app_sc_close(app);
/*The animation will close the window*/
@@ -854,7 +866,7 @@ static lv_action_res_t lv_app_win_minim_anim_create(lv_app_inst_t * app)
a.end = cords.y1;
a.start = 0;
a.fp = (anim_fp_t) lv_obj_set_y;
a.end_cb = (void (*)(void *))lv_app_win_close_anim_cb;
a.end_cb = (void (*)(void *))lv_app_win_minim_anim_cb;
anim_create(&a);
return LV_ACTION_RES_OK;
@@ -866,10 +878,19 @@ static lv_action_res_t lv_app_win_minim_anim_create(lv_app_inst_t * app)
#if LV_APP_EFFECT_ANIM != 0
/**
* Called when the window close or minimization animation is ready to close the window
* Called when the window close animation is ready to close the application
* @param app_win pointer to a window
*/
static void lv_app_win_close_anim_cb(lv_obj_t * app_win)
{
lv_app_inst_t * app = lv_obj_get_free_p(app_win);
lv_app_close(app);
}
/**
* Called when the window minimization animation is ready to close the window
* @param app_win pointer to a window
*/
static void lv_app_win_minim_anim_cb(lv_obj_t * app_win)
{
lv_app_inst_t * app = lv_obj_get_free_p(app_win);
lv_app_win_close(app);

13
lv_app/lv_app.h
View File

@@ -29,11 +29,12 @@ typedef enum
typedef enum
{
LV_APP_COM_TYPE_STR, /*String data to process*/
LV_APP_COM_TYPE_BIN, /*Binary data as 'int32_t' array*/
LV_APP_COM_TYPE_CHAR, /*Stream of characters. Always '\0' terminated*/
LV_APP_COM_TYPE_INT, /*Stream of 'int32_t' numbers*/
LV_APP_COM_TYPE_LOG, /*String about an event to log*/
LV_APP_COM_TYPE_NOTICE, /*String to display to the user as a notification*/
LV_APP_COM_TYPE_TRIG, /*A trigger to do some specific action (data is ignored)*/
LV_APP_COM_TYPE_INV, /*Invalid type*/
LV_APP_COM_TYPE_NUM, /*Indicates the number of com. types*/
}lv_app_com_type_t;
struct __LV_APP_DSC_T;
@@ -99,7 +100,7 @@ typedef struct {
void lv_app_init(void);
lv_app_inst_t * lv_app_run(const lv_app_dsc_t * app_dsc, const char * cstr, void * conf);
void lv_app_close(lv_app_inst_t * app);
uint16_t lv_app_com_send(lv_app_inst_t * app_send, lv_app_com_type_t type , const void * data, uint32_t len);
uint16_t lv_app_com_send(lv_app_inst_t * app_send, lv_app_com_type_t type , const void * data, uint32_t size);
lv_obj_t * lv_app_sc_open(lv_app_inst_t * app);
void lv_app_sc_close(lv_app_inst_t * app);
lv_obj_t * lv_app_win_open(lv_app_inst_t * app);
@@ -107,10 +108,12 @@ void lv_app_win_close(lv_app_inst_t * app);
lv_obj_t * lv_app_win_get_from_obj(lv_obj_t * obj);
const lv_app_dsc_t * lv_app_dsc_get(const char * name);
bool lv_app_con_check(lv_app_inst_t * sender, lv_app_inst_t * receiver);
void lv_app_con_set(lv_app_inst_t * sender, lv_app_inst_t * receiver);
void lv_app_con_del(lv_app_inst_t * sender, lv_app_inst_t * receiver);
lv_app_style_t * lv_app_style_get(void);
void lv_app_rename(lv_app_inst_t * app, const char * name);
void lv_app_refr_style(void);
void lv_app_style_refr(void);
lv_app_inst_t * lv_app_get_next(lv_app_inst_t * prev, lv_app_dsc_t * dsc);

2
lv_app/lv_app_util/lv_app_notice.c
View File

@@ -123,7 +123,7 @@ void lv_app_notice_add(const char * txt)
a.fp = (anim_fp_t) lv_obj_set_height;
a.start = lv_obj_get_height(n);
a.end = 0;
a.end_cb = lv_obj_del;
a.end_cb = (anim_cb_t)lv_obj_del;
anim_create(&a);
#else
anim_t a;

28
lv_appx/lv_app_example.c
View File

@@ -43,7 +43,7 @@ typedef struct
**********************/
static void my_app_run(lv_app_inst_t * app, const char * cstr, void * conf);
static void my_app_close(lv_app_inst_t * app);
static void my_com_rec(lv_app_inst_t * app_send, lv_app_inst_t * app_rec, lv_app_com_type_t type , const void * data, uint32_t len);
static void my_com_rec(lv_app_inst_t * app_send, lv_app_inst_t * app_rec, lv_app_com_type_t type , const void * data, uint32_t size);
static void my_sc_open(lv_app_inst_t * app, lv_obj_t * sc);
static void my_sc_close(lv_app_inst_t * app);
static void my_win_open(lv_app_inst_t * app, lv_obj_t * win);
@@ -79,6 +79,10 @@ static lv_app_dsc_t my_app_dsc =
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the application
* @return pointer to the application descriptor of this application
*/
const lv_app_dsc_t * lv_app_example_init(void)
{
return &my_app_dsc;
@@ -122,24 +126,18 @@ static void my_app_close(lv_app_inst_t * app)
* @param app_rec pointer to an application which is receiving the message
* @param type type of data from 'lv_app_com_type_t' enum
* @param data pointer to the sent data
* @param len length of 'data' in bytes
* @param size length of 'data' in bytes
*/
static void my_com_rec(lv_app_inst_t * app_send, lv_app_inst_t * app_rec,
lv_app_com_type_t type , const void * data, uint32_t len)
lv_app_com_type_t type , const void * data, uint32_t size)
{
if(type == LV_APP_COM_TYPE_STR) { /*data: string*/
if(type == LV_APP_COM_TYPE_CHAR) { /*data: string*/
my_sc_data_t * sc_data = app_rec->sc_data;
if (sc_data->label != NULL) {
lv_label_set_text(sc_data->label, data);
lv_label_set_text_array(sc_data->label, data, size);
lv_obj_align(sc_data->label , NULL,LV_ALIGN_CENTER, 0, 0);
}
}
else if(type == LV_APP_COM_TYPE_BIN) { /*data: array of 'int32_t' */
}
else if(type == LV_APP_COM_TYPE_TRIG) { /*data: ignored' */
}
}
/**
@@ -151,10 +149,11 @@ static void my_com_rec(lv_app_inst_t * app_send, lv_app_inst_t * app_rec,
static void my_sc_open(lv_app_inst_t * app, lv_obj_t * sc)
{
my_sc_data_t * sc_data = app->sc_data;
lv_app_style_t * app_style = lv_app_style_get();
sc_data->label = lv_label_create(sc, NULL);
lv_label_set_text(sc_data->label, "Empty");
lv_obj_set_style(sc_data->label, lv_labels_get(LV_LABELS_DEF, NULL));
lv_obj_set_style(sc_data->label, &app_style->sc_txt_style);
lv_obj_align(sc_data->label, NULL, LV_ALIGN_CENTER, 0, 0);
}
@@ -206,7 +205,8 @@ static void my_win_close(lv_app_inst_t * app)
*/
static lv_action_res_t ta_rel_action(lv_obj_t * ta, lv_dispi_t * dispi)
{
lv_app_kb_open(ta, LV_APP_KB_MODE_TXT | LV_APP_KB_MODE_CLR, NULL, kb_ok_action);
lv_ta_set_text(ta, ""); /*Clear the ta*/
lv_app_kb_open(ta, LV_APP_KB_MODE_TXT, NULL, kb_ok_action);
return LV_ACTION_RES_OK;
}
@@ -218,7 +218,7 @@ static void kb_ok_action(lv_obj_t * ta)
{
lv_app_inst_t * app = lv_obj_get_free_p(ta);
const char * txt = lv_ta_get_txt(ta);
lv_app_com_send(app, LV_APP_COM_TYPE_STR, txt, strlen(txt) + 1);
lv_app_com_send(app, LV_APP_COM_TYPE_CHAR, txt, strlen(txt));
}
#endif /*LV_APP_ENABLE != 0 && USE_LV_APP_EXAMPLE != 0*/

2
lv_appx/lv_app_example.h
View File

@@ -36,4 +36,4 @@ const lv_app_dsc_t * lv_app_example_init(void);
#endif /*LV_APP_ENABLE != 0 && USE_LV_APP_EXAMPLE != 0*/
#endif /* LV_APP_EXAMPLE */
#endif /* LV_APP_EXAMPLE_H */

70
lv_appx/lv_app_sysmon.c
View File

@@ -11,17 +11,13 @@
#include <stdio.h>
#include "misc/os/ptask.h"
#include "misc/os/idle.h"
#include "lvgl/lv_objx/lv_chart.h"
#include "lvgl/lv_app/lv_app_util/lv_app_notice.h"
/*********************
* DEFINES
*********************/
#define LV_APP_SYSMON_REFR_TIME 500 /*[ms]*/
#define LV_APP_SYSMON_PNUM 64
#define LV_APP_SYS_MON_PADDING (20 * LV_DOWNSCALE)
#define LV_APP_SYS_MEM_WARN (4 * 1024)
#define LV_APP_SYS_FRAG_WARN (70) /*[%]*/
/**********************
* TYPEDEFS
@@ -54,7 +50,7 @@ typedef struct
**********************/
static void my_app_run(lv_app_inst_t * app, const char * cstr, void * conf);
static void my_app_close(lv_app_inst_t * app);
static void my_com_rec(lv_app_inst_t * app_send, lv_app_inst_t * app_rec, lv_app_com_type_t type , const void * data, uint32_t len);
static void my_com_rec(lv_app_inst_t * app_send, lv_app_inst_t * app_rec, lv_app_com_type_t type , const void * data, uint32_t size);
static void my_sc_open(lv_app_inst_t * app, lv_obj_t * sc);
static void my_sc_close(lv_app_inst_t * app);
static void my_win_open(lv_app_inst_t * app, lv_obj_t * win);
@@ -96,6 +92,10 @@ static dm_mon_t mem_mon;
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the application
* @return pointer to the application descriptor of this application
*/
const lv_app_dsc_t * lv_app_sysmon_init(void)
{
ptask_create(sysmon_task, LV_APP_SYSMON_REFR_TIME, PTASK_PRIO_LOW);
@@ -103,6 +103,7 @@ const lv_app_dsc_t * lv_app_sysmon_init(void)
memset(mem_pct, 0, sizeof(mem_pct));
memset(cpu_pct, 0, sizeof(cpu_pct));
/*Create progress bar styles for the shortcut*/
lv_pbs_get(LV_PBS_DEF, &cpu_pbs);
cpu_pbs.bg.gcolor = COLOR_MAKE(0xFF, 0xE0, 0xE0);
cpu_pbs.bg.objs.color = COLOR_MAKE(0xFF, 0xD0, 0xD0);
@@ -164,20 +165,12 @@ static void my_app_close(lv_app_inst_t * app)
* @param app_rec pointer to an application which is receiving the message
* @param type type of data from 'lv_app_com_type_t' enum
* @param data pointer to the sent data
* @param len length of 'data' in bytes
* @param size length of 'data' in bytes
*/
static void my_com_rec(lv_app_inst_t * app_send, lv_app_inst_t * app_rec,
lv_app_com_type_t type , const void * data, uint32_t len)
lv_app_com_type_t type , const void * data, uint32_t size)
{
if(type == LV_APP_COM_TYPE_STR) { /*data: string*/
}
else if(type == LV_APP_COM_TYPE_BIN) { /*data: array of 'int32_t' */
}
else if(type == LV_APP_COM_TYPE_TRIG) { /*data: ignored' */
}
}
/**
@@ -192,6 +185,7 @@ static void my_sc_open(lv_app_inst_t * app, lv_obj_t * sc)
cord_t w = lv_obj_get_width(sc) / 5;
/*Create 2 progress bars fr the CPU and the Memory*/
sc_data->pb_cpu = lv_pb_create(sc, NULL);
lv_obj_set_size(sc_data->pb_cpu, w, 5 * lv_obj_get_height(sc) / 8);
lv_obj_align(sc_data->pb_cpu, NULL, LV_ALIGN_IN_BOTTOM_LEFT, w, - lv_obj_get_height(sc) / 8);
@@ -206,7 +200,6 @@ static void my_sc_open(lv_app_inst_t * app, lv_obj_t * sc)
lv_pb_set_format_str(sc_data->pb_mem, "M\ne\nm");
lv_app_sysmon_refr();
}
/**
@@ -228,7 +221,9 @@ static void my_sc_close(lv_app_inst_t * app)
static void my_win_open(lv_app_inst_t * app, lv_obj_t * win)
{
my_win_data_t * win_data = app->win_data;
lv_app_style_t * app_style = lv_app_style_get();
/*Create a chart with two data lines*/
win_data->chart = lv_chart_create(win, NULL);
lv_obj_set_size(win_data->chart, LV_HOR_RES / 2, LV_VER_RES / 2);
lv_chart_set_pnum(win_data->chart, LV_APP_SYSMON_PNUM);
@@ -244,9 +239,10 @@ static void my_win_open(lv_app_inst_t * app, lv_obj_t * win)
win_data->mem_dl[i] = mem_pct[i];
}
lv_app_style_t * app_style = lv_app_style_get();
/*Create a label for the details of Memory and CPU usage*/
cord_t opad = app_style->win_style.content.scrable_rects.opad;
win_data->label = lv_label_create(win, NULL);
lv_obj_align(win_data->label, win_data->chart, LV_ALIGN_OUT_RIGHT_MID, LV_APP_SYS_MON_PADDING, 0);
lv_obj_align(win_data->label, win_data->chart, LV_ALIGN_OUT_RIGHT_MID, opad, 0);
lv_obj_set_style(win_data->label, &app_style->win_txt_style);
lv_app_sysmon_refr();
@@ -264,9 +260,13 @@ static void my_win_close(lv_app_inst_t * app)
/*--------------------
* OTHER FUNCTIONS
---------------------*/
/**
* Called periodically to monitor the CPU and memory usage.
* It refreshes the shortcuts and windows and also add notifications if there is any problem.
*/
static void sysmon_task(void)
{
/*Shift out the oldest data*/
uint16_t i;
for(i = 1; i < LV_APP_SYSMON_PNUM; i++) {
@@ -274,6 +274,7 @@ static void sysmon_task(void)
cpu_pct[i - 1] = cpu_pct[i];
}
/*Get CPU and memory information */
uint8_t cpu_busy = 0;
#if USE_IDLE != 0
cpu_busy = 100 - idle_get();
@@ -282,36 +283,40 @@ static void sysmon_task(void)
dm_monitor(&mem_mon);
uint8_t mem_free_pct = (uint32_t) ((DM_MEM_SIZE - mem_mon.size_free) * 100 ) / DM_MEM_SIZE;
/*Add the CPU and memory data*/
cpu_pct[LV_APP_SYSMON_PNUM - 1] = cpu_busy;
mem_pct[LV_APP_SYSMON_PNUM - 1] = mem_free_pct;
/*Refresh the shortcuts and windows*/
lv_app_sysmon_refr();
/*Add notifications if something is critical*/
static bool mem_warn_report = false;
if(mem_mon.size_free < LV_APP_SYS_MEM_WARN && mem_warn_report == false) {
if(mem_mon.size_free < LV_APP_SYSMON_MEM_WARN && mem_warn_report == false) {
mem_warn_report = true;
lv_app_notice_add("Critically low memory");
}
if(mem_mon.size_free > LV_APP_SYS_MEM_WARN) {
mem_warn_report = false;
}
if(mem_mon.size_free > LV_APP_SYSMON_MEM_WARN) mem_warn_report = false;
static bool frag_warn_report = false;
if(mem_mon.pct_frag > LV_APP_SYS_FRAG_WARN && frag_warn_report == false) {
if(mem_mon.pct_frag > LV_APP_SYSMON_FRAG_WARN) {
if(frag_warn_report == false) {
frag_warn_report = true;
lv_app_notice_add("Critically memory fragmentation");
}
if(mem_mon.pct_frag < LV_APP_SYS_FRAG_WARN) {
frag_warn_report = false;
dm_defrag(); /*Defrag. if the fragmentation is critical*/
}
if(mem_mon.pct_frag < LV_APP_SYSMON_FRAG_WARN) frag_warn_report = false;
}
/**
* Refresh the shortcuts and windows.
*/
static void lv_app_sysmon_refr(void)
{
/*Create a long detailed string*/
char buf_long[256];
sprintf(buf_long, "CPU: %d %%\n\nMEMORY: %d %%\nTotal: %d bytes\nUsed: %d bytes\nFree: %d bytes\nFrag: %d %%",
cpu_pct[LV_APP_SYSMON_PNUM - 1],
@@ -319,10 +324,13 @@ static void lv_app_sysmon_refr(void)
DM_MEM_SIZE,
DM_MEM_SIZE - mem_mon.size_free, mem_mon.size_free, mem_mon.pct_frag);
/*Create a short string*/
char buf_short[128];
sprintf(buf_short, "CPU: %d %%\nMem: %d %%\nFrag: %d %%",
cpu_pct[LV_APP_SYSMON_PNUM - 1], mem_pct[LV_APP_SYSMON_PNUM - 1], mem_mon.pct_frag);
lv_app_style_t * app_style = lv_app_style_get();
cord_t opad = app_style->win_style.content.scrable_rects.opad;
lv_app_inst_t * app;
app = lv_app_get_next(NULL, &my_app_dsc);
while(app != NULL) {
@@ -330,7 +338,7 @@ static void lv_app_sysmon_refr(void)
my_win_data_t * win_data = app->win_data;
if(win_data != NULL) {
lv_label_set_text(win_data->label, buf_long);
lv_obj_align(win_data->label, win_data->chart, LV_ALIGN_OUT_RIGHT_TOP, LV_APP_SYS_MON_PADDING, 0);
lv_obj_align(win_data->label, win_data->chart, LV_ALIGN_OUT_RIGHT_TOP, opad, 0);
lv_chart_set_next(win_data->chart, win_data->mem_dl, mem_pct[LV_APP_SYSMON_PNUM - 1]);
lv_chart_set_next(win_data->chart, win_data->cpu_dl, cpu_pct[LV_APP_SYSMON_PNUM - 1]);
@@ -343,7 +351,7 @@ static void lv_app_sysmon_refr(void)
lv_pb_set_value(sc_data->pb_mem, mem_pct[LV_APP_SYSMON_PNUM - 1]);
}
lv_app_com_send(app, LV_APP_COM_TYPE_STR, buf_short, strlen(buf_short));
lv_app_com_send(app, LV_APP_COM_TYPE_CHAR, buf_short, strlen(buf_short));
app = lv_app_get_next(app, &my_app_dsc);
}

3
lv_misc/anim.h
View File

@@ -28,12 +28,13 @@ typedef enum
typedef uint8_t anim_path_t;
typedef void (*anim_fp_t)(void *, int32_t);
typedef void (*anim_cb_t)(void *);
typedef struct
{
void * var; /*Variable to animate*/
anim_fp_t fp; /*Animator function*/
void (*end_cb) (void *); /*Call it when the animation is ready*/
anim_cb_t end_cb; /*Call it when the animation is ready*/
anim_path_t * path; /*An array with the steps of animations*/
int32_t start; /*Start value*/
int32_t end; /*End value*/

1
lv_objx/lv_pb.c
View File

@@ -131,6 +131,7 @@ bool lv_pb_signal(lv_obj_t * pb, lv_signal_t sign, void * param)
break;
case LV_SIGNAL_CLEANUP:
dm_free(ext->format_str);
ext->format_str = NULL;
break;
case LV_SIGNAL_STYLE_CHG:
lv_obj_set_style(ext->label, &style->label);