display: update display_sleep

7 years ago · 5e867cc092
parent 2ea5d102a8
commit 5e867cc092
1 changed files with 5 additions and 4 deletions
--- a/embed/extmod/modtrezorui/display-stm32.h
+++ b/embed/extmod/modtrezorui/display-stm32.h
@ -24,11 +24,12 @@

 #define LED_PWM_TIM_PERIOD (10000)

-static void __attribute__((unused)) display_sleep(void) {
+static void __attribute__((unused)) display_sleep(void)
+{
 #if DISPLAY_ILI9341V || DISPLAY_ST7789V
-    CMD(0x28); // display off
-    HAL_Delay(20);
-    CMD(0x10); // enter sleep
+    CMD(0x28); // DISPOFF: Display Off
+    CMD(0x10); // SLPIN: Sleep in
+    HAL_Delay(5); // need to wait 5 milliseconds after "sleep in" before sending any new commands
 #endif
 }