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fix overflow in lv_anim_speed_to_time

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This commit is contained in:
Gabor Kiss-Vamosi 2018-04-17 14:11:26 +02:00
parent 8bc5770c28
commit 2353ca0621
2 changed files with 4 additions and 2 deletions
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4
lv_misc/lv_anim.c
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@ -115,7 +115,9 @@ bool lv_anim_del(void * var, lv_anim_fp_t fp)
uint16_t lv_anim_speed_to_time(uint16_t speed, int32_t start, int32_t end)
{
int32_t d = LV_MATH_ABS((int32_t) start - end);
uint16_t time = (int32_t)((int32_t)(d * 1000) / speed);
uint32_t time = (int32_t)((int32_t)(d * 1000) / speed);
if(time > UINT16_MAX) time = UINT16_MAX;
if(time == 0) {
time++;

2
lv_misc/lv_anim.h
View File

@ -43,7 +43,7 @@ typedef struct _lv_anim_t
lv_anim_path_t path; /*An array with the steps of animations*/
int32_t start; /*Start value*/
int32_t end; /*End value*/
int16_t time; /*Animation time in ms*/
uint16_t time; /*Animation time in ms*/
int16_t act_time; /*Current time in animation. Set to negative to make delay.*/
uint16_t playback_pause; /*Wait before play back*/
uint16_t repeat_pause; /*Wait before repeat*/