150 lines
2.8 KiB
C++
150 lines
2.8 KiB
C++
#pragma once
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#include <stdint.h>
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#include <avr/pgmspace.h>
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#include "../clock.hpp"
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#include "../io/io.hpp"
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template <typename Spi, io::P RstPin, io::P DcPin, io::P BusyPin>
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class Epd {
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static constexpr auto width = uint16_t{200};
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static constexpr auto height = uint16_t{200};
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io::Pin<RstPin> m_rst;
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io::Pin<DcPin> m_dc;
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io::Pin<BusyPin> m_bsy;
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public:
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Epd() = default;
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~Epd() = default;
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int Init()
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{
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m_rst.dir(io::Dir::OUT);
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m_dc.dir(io::Dir::OUT);
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m_bsy.dir(io::Dir::IN);
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Spi::init();
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/* EPD hardware init start */
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Reset();
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WaitUntilIdle();
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SendCommand(0x12); // SWRESET
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WaitUntilIdle();
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SendCommand(0x01); // 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(0x11); // data entry mode
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SendData(0x01);
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SendCommand(0x44); // set Ram-X address start/end position
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SendData(0x00);
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SendData(0x18); // 0x18-->(24+1)*8=200
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SendCommand(0x45); // set Ram-Y address start/end position
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SendData(0xC7); // 0xC7-->(199+1)=200
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SendData(0x00);
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SendData(0x00);
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SendData(0x00);
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SendCommand(0x3C); // BorderWavefrom
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SendData(0x05);
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SendCommand(0x18); // Read built-in temperature sensor
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SendData(0x80);
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SendCommand(0x4E); // set RAM x address count to 0;
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SendData(0x00);
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SendCommand(0x4F); // set RAM y address count to 0X199;
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SendData(0xC7);
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SendData(0x00);
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WaitUntilIdle();
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/* EPD hardware init end */
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return 0;
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}
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void SendCommand(unsigned char command)
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{
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m_dc = false;
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SpiTransfer(command);
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}
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void SendData(unsigned char data)
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{
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m_dc = true;
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SpiTransfer(data);
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}
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void WaitUntilIdle()
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{
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while (m_bsy) {
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_delay_ms(100);
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}
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}
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void Reset()
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{
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m_rst = true;
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_delay_ms(200);
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m_rst = false; // module reset
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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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}
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void DisplayFrame(const unsigned char *frame_buffer_black, const unsigned char *frame_buffer_red)
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{
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SendCommand(0x24);
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for (auto i = uint16_t{0}; i < width * height / 8; i++) {
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SendData(pgm_read_byte(&frame_buffer_black[i]));
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}
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SendCommand(0x26);
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for (auto i = uint16_t{0}; i < width * height / 8; i++) {
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SendData(~pgm_read_byte(&frame_buffer_red[i]));
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}
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SendCommand(0x22);
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SendData(0xF7);
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SendCommand(0x20);
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WaitUntilIdle();
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}
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void DisplayClear()
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{
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SendCommand(0x24);
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for (auto i = uint16_t{0}; i < width * height / 8; i++) {
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SendData(0xff);
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}
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SendCommand(0x26);
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for (auto i = uint16_t{0}; i < width * height / 8; i++) {
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SendData(0x00);
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}
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SendCommand(0x22);
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SendData(0xF7);
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SendCommand(0x20);
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WaitUntilIdle();
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}
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void Sleep()
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{
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SendCommand(0x10); // power setting
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SendData(0x01); // gate switch to external
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_delay_ms(100);
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}
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void SpiTransfer(unsigned char data)
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{
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Spi::select(true);
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Spi::transfer(data);
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Spi::select(false);
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}
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};
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