aod: lower voltage going to the display

InfiniTimeOrg · Oct 17, 2023 · 97a181d · 97a181d
1 parent b2c61d8
commit 97a181d
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Showing 2 changed files with 26 additions and 2 deletions.
diff --git a/src/drivers/St7789.cpp b/src/drivers/St7789.cpp
@@ -15,6 +15,7 @@ void St7789::Init() {
   nrf_gpio_pin_set(pinReset);
   HardwareReset();
   SoftwareReset();
+  Command2Enable();
   SleepOut();
   ColMod();
   MemoryDataAccessControl();
@@ -26,6 +27,7 @@ void St7789::Init() {
 #endif
   NormalModeOn();
   SetVdv();
+  PowerControl();
   DisplayOn();
 }
 
@@ -48,6 +50,14 @@ void St7789::SoftwareReset() {
   nrf_delay_ms(150);
 }
 
+void St7789::Command2Enable() {
+  WriteCommand(static_cast<uint8_t>(Commands::Command2Enable));
+  WriteData(0x5a);
+  WriteData(0x69);
+  WriteData(0x02);
+  WriteData(0x01);
+}
+
 void St7789::SleepOut() {
   WriteCommand(static_cast<uint8_t>(Commands::SleepOut));
 }
@@ -119,21 +129,30 @@ void St7789::FrameRateLow() {
   WriteData(0x13);
   WriteData(0x1f);
   WriteData(0x1f);
-  nrf_delay_ms(250);
+  nrf_delay_ms(300);
 }
 
 void St7789::FrameRateNormal() {
   WriteCommand(static_cast<uint8_t>(Commands::FrameRate));
   WriteData(0x00);
   WriteData(0x0f);
   WriteData(0x0f);
-  nrf_delay_ms(250);
+  nrf_delay_ms(300);
 }
 
 void St7789::DisplayOn() {
   WriteCommand(static_cast<uint8_t>(Commands::DisplayOn));
 }
 
+void St7789::PowerControl() {
+  WriteCommand(static_cast<uint8_t>(Commands::PowerControl1));
+  WriteData(0xa4);
+  WriteData(0x30);
+
+  WriteCommand(static_cast<uint8_t>(Commands::PowerControl2));
+  WriteData(0xb3);
+}
+
 void St7789::SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
   WriteCommand(static_cast<uint8_t>(Commands::ColumnAddressSet));
   WriteData(x0 >> 8);

diff --git a/src/drivers/St7789.h b/src/drivers/St7789.h
@@ -36,6 +36,7 @@ namespace Pinetime {
 
       void HardwareReset();
       void SoftwareReset();
+      void Command2Enable();
       void SleepOut();
       void SleepIn();
       void ColMod();
@@ -49,6 +50,7 @@ namespace Pinetime {
       void WriteToRam();
       void DisplayOn();
       void DisplayOff();
+      void PowerControl();
 
       void SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
       void SetVdv();
@@ -74,6 +76,9 @@ namespace Pinetime {
         ColMod = 0x3a,
         FrameRate = 0xb3,
         VdvSet = 0xc4,
+        PowerControl1 = 0xd0,
+        Command2Enable = 0xdf,
+        PowerControl2 = 0xe8,
       };
       void WriteData(uint8_t data);
       void ColumnAddressSet();