Refactor code
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113931f8ba
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132
eink.hpp
132
eink.hpp
@ -2,6 +2,7 @@
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#include <tuple>
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#include <type_traits>
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#include <utility>
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#include <cstddef>
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#include <cstdint>
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@ -23,6 +24,17 @@ class Eink {
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static io::Pin<RstPin> m_rst;
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static io::Pin<BusyPin> m_busy;
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template <typename T>
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static T pgm_load(const T &object)
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{
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auto buffer = T{};
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auto rawBuffer = reinterpret_cast<std::byte *>(&buffer);
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for (auto i = std::size_t{0}; i < sizeof(T); ++i) {
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rawBuffer[i] = static_cast<std::byte>(pgm_read_byte(&reinterpret_cast<const std::byte *>(&object)[i]));
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}
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return buffer;
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}
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public:
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enum class Cmd : std::uint8_t {
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DRIVER_OUTPUT_CONTROL = 0x01,
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@ -41,6 +53,22 @@ class Eink {
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SET_RAM_Y_ADDR = 0x4F,
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};
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enum class Color : std::uint8_t {
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BLACK,
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WHITE,
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RED,
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};
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enum class RamDirection : std::uint8_t {
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DECREMENT = 0,
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INCREMENT = 1,
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};
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enum class FastestMovingIndex : std::uint8_t {
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X = 0,
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Y = 1,
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};
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static void init()
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{
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m_rst.dir(io::Dir::OUT);
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@ -49,28 +77,16 @@ class Eink {
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Spi::init();
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reset();
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waitUntilIdle();
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sendCommand(Cmd::SW_RESET);
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waitUntilIdle();
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softReset();
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sendCommand(Cmd::DRIVER_OUTPUT_CONTROL);
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sendData(0xC7);
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sendData(0x00);
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sendData(0x01);
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sendCommand(Cmd::DATA_ENTRY_MODE);
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sendData(0x02);
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setDataEntryMode(RamDirection::DECREMENT, RamDirection::INCREMENT, FastestMovingIndex::X);
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sendCommand(Cmd::SET_RAM_X_ADDR_POSITIONS);
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sendData(Width / 8 - 1);
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sendData(0x00);
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sendCommand(Cmd::SET_RAM_Y_ADDR_POSITIONS);
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sendData(0x00);
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sendData(0x00);
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sendData(Height - 1);
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sendData(0x00);
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setRamRange({Width / 8 - 1, 0}, {0, Height - 1});
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sendCommand(Cmd::BORDER_WAVEFORM_CONTROL);
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sendData(0x05);
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@ -78,12 +94,8 @@ class Eink {
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sendCommand(Cmd::READ_TEMPERATURE_SENSOR);
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sendData(0x80);
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sendCommand(Cmd::SET_RAM_X_ADDR);
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sendData(Width / 8 - 1);
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sendCommand(Cmd::SET_RAM_Y_ADDR);
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sendData(0x00);
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sendData(0x00);
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setRamXPos(Width / 8 - 1);
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setRamYPos(0);
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waitUntilIdle();
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}
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@ -125,22 +137,19 @@ class Eink {
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_delay_ms(10);
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m_rst = true;
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_delay_ms(200);
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waitUntilIdle();
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}
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static void softReset()
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{
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sendCommand(Cmd::SW_RESET);
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waitUntilIdle();
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}
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template <typename RleImage>
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static void draw(const RleImage &rleImage)
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{
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constexpr auto pgm_load = [](const auto &object) {
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using object_t = std::remove_cvref_t<decltype(object)>;
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auto buffer = object_t{};
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auto rawBuffer = reinterpret_cast<std::byte *>(&buffer);
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for (auto i = std::size_t{0}; i < sizeof(object_t); ++i) {
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rawBuffer[i] = static_cast<std::byte>(pgm_read_byte(&reinterpret_cast<const std::byte *>(&object)[i]));
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}
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return buffer;
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};
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constexpr auto sendImageChannel = [pgm_load](const auto command, const auto &image) {
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constexpr auto sendImageChannel = [](const auto command, const auto &image) {
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sendCommand(command);
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for (auto j = std::size_t{0}; j < image.size(); ++j) {
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const auto [count, data] = pgm_load(image[j]);
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@ -163,15 +172,29 @@ class Eink {
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waitUntilIdle();
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}
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static void clear()
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static void clear(const Color color = Color::WHITE)
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{
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constexpr auto getFillData = [](const auto &color) -> std::pair<std::uint8_t, std::uint8_t> {
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switch (color) {
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case Color::WHITE:
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return {0xFF, 0x00};
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case Color::BLACK:
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return {0x00, 0x00};
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case Color::RED:
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return {0xFF, 0xFF};
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}
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return {0xFF, 0x00};
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};
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const auto fillData = getFillData(color);
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sendCommand(Cmd::WRITE_RAM_BLACK);
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for (auto i = std::uint16_t{0}; i < Width * Height / 8; i++) {
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sendData(0xff);
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sendData(fillData.first);
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}
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sendCommand(Cmd::WRITE_RAM_RED);
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for (auto i = std::uint16_t{0}; i < Width * Height / 8; i++) {
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sendData(0x00);
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sendData(fillData.second);
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}
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sendCommand(Cmd::DISPLAY_UPDATE_CONTROL_2);
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@ -202,6 +225,45 @@ class Eink {
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waitUntilIdle();
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}
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static void setDataEntryMode(const RamDirection &xDir = RamDirection::INCREMENT,
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const RamDirection &yDir = RamDirection::INCREMENT,
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const FastestMovingIndex &fastestMovingIndex = FastestMovingIndex::X)
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{
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auto setting = static_cast<std::uint8_t>(xDir) << 0;
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setting |= static_cast<std::uint8_t>(yDir) << 1;
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setting |= static_cast<std::uint8_t>(fastestMovingIndex) << 2;
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sendCommand(Cmd::DATA_ENTRY_MODE);
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sendData(setting);
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}
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static void setRamRange(const std::pair<std::uint8_t, std::uint8_t> &xrange,
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const std::pair<std::uint16_t, std::uint16_t> &yrange)
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{
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sendCommand(Cmd::SET_RAM_X_ADDR_POSITIONS);
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sendData(xrange.first & 0b00111111);
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sendData(xrange.second & 0b00111111);
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sendCommand(Cmd::SET_RAM_Y_ADDR_POSITIONS);
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sendData(yrange.first & 0xFF);
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sendData((yrange.first >> 8) & 0b1);
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sendData(yrange.second & 0xFF);
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sendData((yrange.second >> 8) & 0b1);
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}
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static void setRamXPos(const std::uint8_t pos)
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{
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sendCommand(Cmd::SET_RAM_X_ADDR);
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sendData(pos & 0b00111111);
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}
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static void setRamYPos(const std::uint16_t pos)
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{
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sendCommand(Cmd::SET_RAM_Y_ADDR);
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sendData(pos & 0xFF);
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sendData((pos >> 8) & 0b1);
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}
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static void sleep()
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{
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sendCommand(Cmd::DEEP_SLEEP_MODE);
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