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aod: porch control: 2Hz idle + 75Hz on

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mark9064 2024-01-25 22:05:41 +00:00 committed by JF
parent da9ab4a7b4
commit ef88e8165c
2 changed files with 38 additions and 14 deletions
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42
src/drivers/St7789.cpp
View file

@ -25,6 +25,9 @@ void St7789::Init() {
#ifndef DRIVER_DISPLAY_MIRROR
DisplayInversionOn();
#endif
PorchSet();
FrameRateNormalSet();
IdleFrameRateOff();
NormalModeOn();
SetVdv();
PowerControl();
@ -149,27 +152,44 @@ void St7789::IdleModeOff() {
WriteCommand(static_cast<uint8_t>(Commands::IdleModeOff));
}
void St7789::FrameRateLow() {
WriteCommand(static_cast<uint8_t>(Commands::FrameRate));
// Enable frame rate control for partial/idle mode, 8x frame divider
void St7789::PorchSet() {
WriteCommand(static_cast<uint8_t>(Commands::Porch));
constexpr uint8_t args[] = {
0x02, // Normal mode front porch
0x03, // Normal mode back porch
0x01, // Porch control enable
0xed, // Idle mode front:back porch
0xed, // Partial mode front:back porch (partial mode unused but set anyway)
};
WriteData(args, sizeof(args));
}
void St7789::FrameRateNormalSet() {
WriteCommand(static_cast<uint8_t>(Commands::FrameRateNormal));
// Note that the datasheet table is imprecise - see formula below table
WriteData(0x0a);
}
void St7789::IdleFrameRateOn() {
WriteCommand(static_cast<uint8_t>(Commands::FrameRateIdle));
// According to the datasheet, these controls should apply only to partial/idle mode
// However they appear to apply to normal mode, so we have to enable/disable
// every time we enter/exit always on
// In testing this divider appears to actually be 16x?
constexpr uint8_t args[] = {
0x13, // Enable frame rate control for partial/idle mode, 8x frame divider
0x1f, // Idle mode frame rate (lowest possible)
0x1f, // Partial mode frame rate (lowest possible, unused)
0x1e, // Idle mode frame rate
0x1e, // Partial mode frame rate (unused)
};
WriteData(args, sizeof(args));
}
void St7789::FrameRateNormal() {
WriteCommand(static_cast<uint8_t>(Commands::FrameRate));
void St7789::IdleFrameRateOff() {
WriteCommand(static_cast<uint8_t>(Commands::FrameRateIdle));
constexpr uint8_t args[] = {
0x00, // Disable frame rate control and divider
0x0f, // Idle mode frame rate (normal)
0x0f, // Partial mode frame rate (normal, unused)
0x0a, // Idle mode frame rate (normal)
0x0a, // Partial mode frame rate (normal, unused)
};
WriteData(args, sizeof(args));
}
@ -266,13 +286,13 @@ void St7789::HardwareReset() {
void St7789::LowPowerOn() {
IdleModeOn();
FrameRateLow();
IdleFrameRateOn();
NRF_LOG_INFO("[LCD] Low power mode");
}
void St7789::LowPowerOff() {
IdleModeOff();
FrameRateNormal();
IdleFrameRateOff();
NRF_LOG_INFO("[LCD] Normal power mode");
}

10
src/drivers/St7789.h
View file

@ -50,12 +50,14 @@ namespace Pinetime {
void WriteToRam(const uint8_t* data, size_t size);
void IdleModeOn();
void IdleModeOff();
void FrameRateNormal();
void FrameRateLow();
void FrameRateNormalSet();
void IdleFrameRateOff();
void IdleFrameRateOn();
void DisplayOn();
void DisplayOff();
void PowerControl();
void GateControl();
void PorchSet();
void SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
void SetVdv();
@ -80,12 +82,14 @@ namespace Pinetime {
IdleModeOff = 0x38,
IdleModeOn = 0x39,
PixelFormat = 0x3a,
FrameRate = 0xb3,
FrameRateIdle = 0xb3,
FrameRateNormal = 0xc6,
VdvSet = 0xc4,
Command2Enable = 0xdf,
PowerControl1 = 0xd0,
PowerControl2 = 0xe8,
GateControl = 0xb7,
Porch = 0xb2,
};
void WriteData(uint8_t data);
void WriteData(const uint8_t* data, size_t size);