aod: lower refresh rate when always on
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5385f7e275
commit
0960d67001
2 changed files with 44 additions and 0 deletions
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@ -16,6 +16,7 @@ void St7789::Init() {
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nrf_gpio_pin_set(pinReset);
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HardwareReset();
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SoftwareReset();
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Command2Enable();
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SleepOut();
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PixelFormat();
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MemoryDataAccessControl();
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@ -63,6 +64,17 @@ void St7789::SoftwareReset() {
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vTaskDelay(pdMS_TO_TICKS(125));
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}
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void St7789::Command2Enable() {
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WriteCommand(static_cast<uint8_t>(Commands::Command2Enable));
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constexpr uint8_t args[] = {
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0x5a, // Constant
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0x69, // Constant
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0x02, // Constant
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0x01, // Enable
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};
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WriteData(args, sizeof(args));
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}
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void St7789::SleepOut() {
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if (!sleepIn) {
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return;
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@ -135,6 +147,31 @@ void St7789::IdleModeOff() {
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WriteCommand(static_cast<uint8_t>(Commands::IdleModeOff));
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}
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void St7789::FrameRateLow() {
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WriteCommand(static_cast<uint8_t>(Commands::FrameRate));
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// Enable frame rate control for partial/idle mode, 8x frame divider
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// According to the datasheet, these controls should apply only to partial/idle mode
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// However they appear to apply to normal mode, so we have to enable/disable
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// every time we enter/exit always on
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// In testing this divider appears to actually be 16x?
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constexpr uint8_t args[] = {
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0x13, // Enable frame rate control for partial/idle mode, 8x frame divider
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0x1f, // Idle mode frame rate (lowest possible)
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0x1f, // Partial mode frame rate (lowest possible, unused)
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};
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WriteData(args, sizeof(args));
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}
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void St7789::FrameRateNormal() {
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WriteCommand(static_cast<uint8_t>(Commands::FrameRate));
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constexpr uint8_t args[] = {
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0x00, // Disable frame rate control and divider
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0x0f, // Idle mode frame rate (normal)
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0x0f, // Partial mode frame rate (normal, unused)
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};
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WriteData(args, sizeof(args));
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}
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void St7789::DisplayOn() {
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WriteCommand(static_cast<uint8_t>(Commands::DisplayOn));
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}
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@ -208,11 +245,13 @@ void St7789::HardwareReset() {
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void St7789::LowPowerOn() {
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IdleModeOn();
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FrameRateLow();
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NRF_LOG_INFO("[LCD] Low power mode");
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}
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void St7789::LowPowerOff() {
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IdleModeOff();
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FrameRateNormal();
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NRF_LOG_INFO("[LCD] Normal power mode");
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}
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@ -39,6 +39,7 @@ namespace Pinetime {
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void HardwareReset();
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void SoftwareReset();
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void Command2Enable();
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void SleepOut();
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void EnsureSleepOutPostDelay();
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void SleepIn();
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@ -49,6 +50,8 @@ namespace Pinetime {
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void WriteToRam(const uint8_t* data, size_t size);
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void IdleModeOn();
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void IdleModeOff();
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void FrameRateNormal();
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void FrameRateLow();
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void DisplayOn();
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void DisplayOff();
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@ -75,7 +78,9 @@ namespace Pinetime {
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IdleModeOff = 0x38,
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IdleModeOn = 0x39,
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PixelFormat = 0x3a,
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FrameRate = 0xb3,
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VdvSet = 0xc4,
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Command2Enable = 0xdf,
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};
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void WriteData(uint8_t data);
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void WriteData(const uint8_t* data, size_t size);
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