InfiniTime/src/drivers/St7789.cpp

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#include <hal/nrf_gpio.h>
#include <libraries/delay/nrf_delay.h>
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#include "St7789.h"
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#include "Spi.h"
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using namespace Pinetime::Drivers;
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St7789::St7789(Spi &spi, uint8_t pinDataCommand) : spi{spi}, pinDataCommand{pinDataCommand} {
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}
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void St7789::Init() {
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spi.Init();
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nrf_gpio_cfg_output(pinDataCommand);
nrf_gpio_cfg_output(26);
nrf_gpio_pin_set(26);
HardwareReset();
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SoftwareReset();
SleepOut();
ColMod();
MemoryDataAccessControl();
ColumnAddressSet();
RowAddressSet();
DisplayInversionOn();
NormalModeOn();
DisplayOn();
}
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void St7789::WriteCommand(uint8_t cmd) {
nrf_gpio_pin_clear(pinDataCommand);
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WriteSpi(&cmd, 1);
}
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void St7789::WriteData(uint8_t data) {
nrf_gpio_pin_set(pinDataCommand);
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WriteSpi(&data, 1);
}
void St7789::WriteSpi(const uint8_t* data, size_t size) {
spi.Write(data, size);
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}
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void St7789::SoftwareReset() {
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WriteCommand(static_cast<uint8_t>(Commands::SoftwareReset));
nrf_delay_ms(150);
}
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void St7789::SleepOut() {
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WriteCommand(static_cast<uint8_t>(Commands::SleepOut));
}
void St7789::SleepIn() {
WriteCommand(static_cast<uint8_t>(Commands::SleepIn));
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}
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void St7789::ColMod() {
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WriteCommand(static_cast<uint8_t>(Commands::ColMod));
WriteData(0x55);
nrf_delay_ms(10);
}
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void St7789::MemoryDataAccessControl() {
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WriteCommand(static_cast<uint8_t>(Commands::MemoryDataAccessControl));
WriteData(0x00);
}
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void St7789::ColumnAddressSet() {
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WriteCommand(static_cast<uint8_t>(Commands::ColumnAddressSet));
WriteData(0x00);
WriteData(0x00);
WriteData(Width >> 8u);
WriteData(Width & 0xffu);
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}
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void St7789::RowAddressSet() {
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WriteCommand(static_cast<uint8_t>(Commands::RowAddressSet));
WriteData(0x00);
WriteData(0x00);
WriteData(320u >> 8u);
WriteData(320u & 0xffu);
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}
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void St7789::DisplayInversionOn() {
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WriteCommand(static_cast<uint8_t>(Commands::DisplayInversionOn));
nrf_delay_ms(10);
}
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void St7789::NormalModeOn() {
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WriteCommand(static_cast<uint8_t>(Commands::NormalModeOn));
nrf_delay_ms(10);
}
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void St7789::DisplayOn() {
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WriteCommand(static_cast<uint8_t>(Commands::DisplayOn));
}
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void St7789::SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
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WriteCommand(static_cast<uint8_t>(Commands::ColumnAddressSet));
WriteData(x0 >> 8);
WriteData(x0 & 0xff);
WriteData(x1 >> 8);
WriteData(x1 & 0xff);
WriteCommand(static_cast<uint8_t>(Commands::RowAddressSet));
WriteData(y0>>8);
WriteData(y0 & 0xff);
WriteData(y1 >> 8);
WriteData(y1 & 0xff);
WriteToRam();
}
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void St7789::WriteToRam() {
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WriteCommand(static_cast<uint8_t>(Commands::WriteToRam));
}
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void St7789::DisplayOff() {
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WriteCommand(static_cast<uint8_t>(Commands::DisplayOff));
nrf_delay_ms(500);
}
void St7789::VerticalScrollDefinition(uint16_t topFixedLines, uint16_t scrollLines, uint16_t bottomFixedLines) {
WriteCommand(static_cast<uint8_t>(Commands::VerticalScrollDefinition));
WriteData(topFixedLines >> 8u);
WriteData(topFixedLines & 0x00ffu);
WriteData(scrollLines >> 8u);
WriteData(scrollLines & 0x00ffu);
WriteData(bottomFixedLines >> 8u);
WriteData(bottomFixedLines & 0x00ffu);
}
void St7789::VerticalScrollStartAddress(uint16_t line) {
verticalScrollingStartAddress = line;
WriteCommand(static_cast<uint8_t>(Commands::VerticalScrollStartAddress));
WriteData(line >> 8u);
WriteData(line & 0x00ffu);
}
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void St7789::Uninit() {
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}
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void St7789::DrawPixel(uint16_t x, uint16_t y, uint32_t color) {
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if((x < 0) ||(x >= Width) || (y < 0) || (y >= Height)) return;
SetAddrWindow(x, y, x+1, y+1);
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nrf_gpio_pin_set(pinDataCommand);
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WriteSpi(reinterpret_cast<const uint8_t *>(&color), 2);
}
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void St7789::BeginDrawBuffer(uint16_t x, uint16_t y, uint16_t width, uint16_t height) {
if((x >= Width) || (y >= Height)) return;
if((x + width - 1) >= Width) width = Width - x;
if((y + height - 1) >= Height) height = Height - y;
SetAddrWindow(0+x, ST7789_ROW_OFFSET+y, x+width-1, y+height-1);
nrf_gpio_pin_set(pinDataCommand);
}
void St7789::NextDrawBuffer(const uint8_t *data, size_t size) {
WriteSpi(data, size);
}
void St7789::HardwareReset() {
nrf_gpio_pin_clear(26);
nrf_delay_ms(10);
nrf_gpio_pin_set(26);
}
void St7789::Sleep() {
SleepIn();
nrf_gpio_cfg_default(pinDataCommand);
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// spi.Sleep(); // TODO sleep SPI
}
void St7789::Wakeup() {
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// spi.Wakeup(); // TODO wake up SPI
nrf_gpio_cfg_output(pinDataCommand);
// TODO why do we need to reset the controller?
HardwareReset();
SoftwareReset();
SleepOut();
ColMod();
MemoryDataAccessControl();
ColumnAddressSet();
RowAddressSet();
DisplayInversionOn();
NormalModeOn();
VerticalScrollStartAddress(verticalScrollingStartAddress);
DisplayOn();
}