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embed: don't sync in display_refresh when using GC9307

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Pavol Rusnak 2018-08-02 19:01:28 +02:00
parent e7a74ccfee
commit f1dc43f951
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1 changed files with 2 additions and 0 deletions
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embed/extmod/modtrezorui/display-stm32.h
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@ -332,9 +332,11 @@ void display_init(void)
void display_refresh(void)
{
#if ! DISPLAY_GC9307
// synchronize with the panel synchronization signal in order to avoid visual tearing effects
while (GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_12)) { }
while (GPIO_PIN_SET == HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_12)) { }
#endif
}
void display_save(const char *prefix)