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Create readable names for display commands

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This commit is contained in:
BlackMark 2022-05-26 15:53:29 +02:00
parent 1c01b17f4d
commit 612f6a9fbc
1 changed files with 42 additions and 26 deletions
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68
eink.hpp
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@ -12,6 +12,23 @@ class Epd {
static constexpr auto width = uint16_t{200}; static constexpr auto width = uint16_t{200};
static constexpr auto height = uint16_t{200}; static constexpr auto height = uint16_t{200};
struct Cmd {
static constexpr auto SW_RESET = uint8_t{0x12};
static constexpr auto DRIVER_OUTPUT_CONTROL = uint8_t{0x01};
static constexpr auto DATA_ENTRY_MODE = uint8_t{0x11};
static constexpr auto SET_RAM_X_ADDR_POSITIONS = uint8_t{0x44};
static constexpr auto SET_RAM_Y_ADDR_POSITIONS = uint8_t{0x45};
static constexpr auto BORDER_WAVEFORM_CONTROL = uint8_t{0x3C};
static constexpr auto READ_TEMPERATURE_SENSOR = uint8_t{0x18};
static constexpr auto SET_RAM_X_ADDR = uint8_t{0x4E};
static constexpr auto SET_RAM_Y_ADDR = uint8_t{0x4F};
static constexpr auto WRITE_RAM_BLACK = uint8_t{0x24};
static constexpr auto WRITE_RAM_RED = uint8_t{0x26};
static constexpr auto DISPLAY_UPDATE_CONTROL_2 = uint8_t{0x22};
static constexpr auto UPDATE_DISPLAY = uint8_t{0x20};
static constexpr auto DEEP_SLEEP_MODE = uint8_t{0x10};
};
io::Pin<RstPin> m_rst; io::Pin<RstPin> m_rst;
io::Pin<DcPin> m_dc; io::Pin<DcPin> m_dc;
io::Pin<BusyPin> m_bsy; io::Pin<BusyPin> m_bsy;
@ -27,45 +44,44 @@ class Epd {
m_bsy.dir(io::Dir::IN); m_bsy.dir(io::Dir::IN);
Spi::init(); Spi::init();
/* EPD hardware init start */
Reset(); Reset();
WaitUntilIdle(); WaitUntilIdle();
SendCommand(0x12); // SWRESET SendCommand(Cmd::SW_RESET);
WaitUntilIdle(); WaitUntilIdle();
SendCommand(0x01); // Driver output control SendCommand(Cmd::DRIVER_OUTPUT_CONTROL);
SendData(0xC7); SendData(0xC7);
SendData(0x00); SendData(0x00);
SendData(0x01); SendData(0x01);
SendCommand(0x11); // data entry mode SendCommand(Cmd::DATA_ENTRY_MODE);
SendData(0x01); SendData(0x01);
SendCommand(0x44); // set Ram-X address start/end position SendCommand(Cmd::SET_RAM_X_ADDR_POSITIONS);
SendData(0x00); SendData(0x00);
SendData(0x18); // 0x18-->(24+1)*8=200 SendData((width / 8) - 1);
SendCommand(0x45); // set Ram-Y address start/end position SendCommand(Cmd::SET_RAM_Y_ADDR_POSITIONS);
SendData(0xC7); // 0xC7-->(199+1)=200 SendData(height - 1);
SendData(0x00); SendData(0x00);
SendData(0x00); SendData(0x00);
SendData(0x00); SendData(0x00);
SendCommand(0x3C); // BorderWavefrom SendCommand(Cmd::BORDER_WAVEFORM_CONTROL);
SendData(0x05); SendData(0x05);
SendCommand(0x18); // Read built-in temperature sensor SendCommand(Cmd::READ_TEMPERATURE_SENSOR);
SendData(0x80); SendData(0x80);
SendCommand(0x4E); // set RAM x address count to 0; SendCommand(Cmd::SET_RAM_X_ADDR);
SendData(0x00); SendData(0x00);
SendCommand(0x4F); // set RAM y address count to 0X199;
SendData(0xC7);
SendData(0x00);
WaitUntilIdle();
/* EPD hardware init end */ SendCommand(Cmd::SET_RAM_Y_ADDR);
SendData(height - 1);
SendData(0x00);
WaitUntilIdle();
return 0; return 0;
} }
@ -101,42 +117,42 @@ class Epd {
void DisplayFrame(const unsigned char *frame_buffer_black, const unsigned char *frame_buffer_red) void DisplayFrame(const unsigned char *frame_buffer_black, const unsigned char *frame_buffer_red)
{ {
SendCommand(0x24); SendCommand(Cmd::WRITE_RAM_BLACK);
for (auto i = uint16_t{0}; i < width * height / 8; i++) { for (auto i = uint16_t{0}; i < width * height / 8; i++) {
SendData(pgm_read_byte(&frame_buffer_black[i])); SendData(pgm_read_byte(&frame_buffer_black[i]));
} }
SendCommand(0x26); SendCommand(Cmd::WRITE_RAM_RED);
for (auto i = uint16_t{0}; i < width * height / 8; i++) { for (auto i = uint16_t{0}; i < width * height / 8; i++) {
SendData(~pgm_read_byte(&frame_buffer_red[i])); SendData(~pgm_read_byte(&frame_buffer_red[i]));
} }
SendCommand(0x22); SendCommand(Cmd::DISPLAY_UPDATE_CONTROL_2);
SendData(0xF7); SendData(0xF7);
SendCommand(0x20); SendCommand(Cmd::UPDATE_DISPLAY);
WaitUntilIdle(); WaitUntilIdle();
} }
void DisplayClear() void DisplayClear()
{ {
SendCommand(0x24); SendCommand(Cmd::WRITE_RAM_BLACK);
for (auto i = uint16_t{0}; i < width * height / 8; i++) { for (auto i = uint16_t{0}; i < width * height / 8; i++) {
SendData(0xff); SendData(0xff);
} }
SendCommand(0x26); SendCommand(Cmd::WRITE_RAM_RED);
for (auto i = uint16_t{0}; i < width * height / 8; i++) { for (auto i = uint16_t{0}; i < width * height / 8; i++) {
SendData(0x00); SendData(0x00);
} }
SendCommand(0x22); SendCommand(Cmd::DISPLAY_UPDATE_CONTROL_2);
SendData(0xF7); SendData(0xF7);
SendCommand(0x20); SendCommand(Cmd::UPDATE_DISPLAY);
WaitUntilIdle(); WaitUntilIdle();
} }
void Sleep() void Sleep()
{ {
SendCommand(0x10); // power setting SendCommand(Cmd::DEEP_SLEEP_MODE);
SendData(0x01); // gate switch to external SendData(0x01);
_delay_ms(100); _delay_ms(100);
} }