diff options
Diffstat (limited to 'src/drivers/St7789.cpp')
-rw-r--r-- | src/drivers/St7789.cpp | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/drivers/St7789.cpp b/src/drivers/St7789.cpp index d520199e..3ed1beb4 100644 --- a/src/drivers/St7789.cpp +++ b/src/drivers/St7789.cpp @@ -23,7 +23,7 @@ void St7789::Init() { RowAddressSet(); DisplayInversionOn(); NormalModeOn(); - SetGamma(); + SetVdv(); DisplayOn(); } @@ -115,9 +115,11 @@ void St7789::WriteToRam() { WriteCommand(static_cast<uint8_t>(Commands::WriteToRam)); } -void St7789::SetGamma() { - WriteCommand(static_cast<uint8_t>(Commands::GammaSet)); - WriteData(0x04); +void St7789::SetVdv() { + // By default there is a large step from pixel brightness zero to one. + // After experimenting with VCOMS, VRH and VDV, this was found to produce good results. + WriteCommand(static_cast<uint8_t>(Commands::VdvSet)); + WriteData(0x10); } void St7789::DisplayOff() { |