mirror of
https://github.com/esphome/esphome.git
synced 2024-12-02 19:54:14 +01:00
240 lines
8 KiB
C++
240 lines
8 KiB
C++
#include "ssd1325_base.h"
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#include "esphome/core/log.h"
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#include "esphome/core/helpers.h"
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namespace esphome {
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namespace ssd1325_base {
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static const char *const TAG = "ssd1325";
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static const uint8_t SSD1325_MAX_CONTRAST = 127;
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static const uint8_t SSD1325_COLORMASK = 0x0f;
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static const uint8_t SSD1325_COLORSHIFT = 4;
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static const uint8_t SSD1325_PIXELSPERBYTE = 2;
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static const uint8_t SSD1325_SETCOLADDR = 0x15;
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static const uint8_t SSD1325_SETROWADDR = 0x75;
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static const uint8_t SSD1325_SETCONTRAST = 0x81;
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static const uint8_t SSD1325_SETCURRENT = 0x84;
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static const uint8_t SSD1325_SETREMAP = 0xA0;
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static const uint8_t SSD1325_SETSTARTLINE = 0xA1;
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static const uint8_t SSD1325_SETOFFSET = 0xA2;
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static const uint8_t SSD1325_NORMALDISPLAY = 0xA4;
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static const uint8_t SSD1325_DISPLAYALLON = 0xA5;
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static const uint8_t SSD1325_DISPLAYALLOFF = 0xA6;
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static const uint8_t SSD1325_INVERTDISPLAY = 0xA7;
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static const uint8_t SSD1325_SETMULTIPLEX = 0xA8;
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static const uint8_t SSD1325_MASTERCONFIG = 0xAD;
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static const uint8_t SSD1325_DISPLAYOFF = 0xAE;
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static const uint8_t SSD1325_DISPLAYON = 0xAF;
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static const uint8_t SSD1325_SETPRECHARGECOMPENABLE = 0xB0;
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static const uint8_t SSD1325_SETPHASELEN = 0xB1;
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static const uint8_t SSD1325_SETROWPERIOD = 0xB2;
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static const uint8_t SSD1325_SETCLOCK = 0xB3;
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static const uint8_t SSD1325_SETPRECHARGECOMP = 0xB4;
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static const uint8_t SSD1325_SETGRAYTABLE = 0xB8;
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static const uint8_t SSD1325_SETDEFAULTGRAYTABLE = 0xB9;
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static const uint8_t SSD1325_SETPRECHARGEVOLTAGE = 0xBC;
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static const uint8_t SSD1325_SETVCOMLEVEL = 0xBE;
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static const uint8_t SSD1325_SETVSL = 0xBF;
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static const uint8_t SSD1325_GFXACCEL = 0x23;
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static const uint8_t SSD1325_DRAWRECT = 0x24;
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static const uint8_t SSD1325_COPY = 0x25;
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void SSD1325::setup() {
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this->init_internal_(this->get_buffer_length_());
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this->command(SSD1325_DISPLAYOFF); // display off
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this->command(SSD1325_SETCLOCK); // set osc division
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this->command(0xF1); // 145
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this->command(SSD1325_SETMULTIPLEX); // multiplex ratio
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if (this->model_ == SSD1327_MODEL_128_128)
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this->command(0x7f); // duty = height - 1
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else
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this->command(0x3f); // duty = 1/64
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this->command(SSD1325_SETOFFSET); // set display offset
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if (this->model_ == SSD1327_MODEL_128_128)
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this->command(0x00); // 0
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else
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this->command(0x4C); // 76
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this->command(SSD1325_SETSTARTLINE); // set start line
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this->command(0x00); // ...
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this->command(SSD1325_MASTERCONFIG); // Set Master Config DC/DC Converter
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this->command(0x02);
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this->command(SSD1325_SETREMAP); // set segment remapping
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if (this->model_ == SSD1327_MODEL_128_128)
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this->command(0x53); // COM bottom-up, split odd/even, enable column and nibble remapping
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else
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this->command(0x50); // COM bottom-up, split odd/even
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this->command(SSD1325_SETCURRENT + 0x2); // Set Full Current Range
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this->command(SSD1325_SETGRAYTABLE);
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// gamma ~2.2
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if (this->model_ == SSD1327_MODEL_128_128) {
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this->command(0);
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this->command(1);
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this->command(2);
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this->command(3);
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this->command(6);
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this->command(8);
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this->command(12);
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this->command(16);
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this->command(20);
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this->command(26);
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this->command(32);
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this->command(39);
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this->command(46);
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this->command(54);
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this->command(63);
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} else {
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this->command(0x01);
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this->command(0x11);
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this->command(0x22);
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this->command(0x32);
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this->command(0x43);
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this->command(0x54);
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this->command(0x65);
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this->command(0x76);
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}
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this->command(SSD1325_SETROWPERIOD);
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this->command(0x51);
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this->command(SSD1325_SETPHASELEN);
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this->command(0x55);
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this->command(SSD1325_SETPRECHARGECOMP);
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this->command(0x02);
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this->command(SSD1325_SETPRECHARGECOMPENABLE);
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this->command(0x28);
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this->command(SSD1325_SETVCOMLEVEL); // Set High Voltage Level of COM Pin
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this->command(0x1C);
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this->command(SSD1325_SETVSL); // set Low Voltage Level of SEG Pin
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this->command(0x0D | 0x02);
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this->command(SSD1325_NORMALDISPLAY); // set display mode
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set_brightness(this->brightness_);
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this->fill(Color::BLACK); // clear display - ensures we do not see garbage at power-on
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this->display(); // ...write buffer, which actually clears the display's memory
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this->turn_on(); // display ON
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}
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void SSD1325::display() {
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this->command(SSD1325_SETCOLADDR); // set column address
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this->command(0x00); // set column start address
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this->command(0x3F); // set column end address
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this->command(SSD1325_SETROWADDR); // set row address
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this->command(0x00); // set row start address
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if (this->model_ == SSD1327_MODEL_128_128)
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this->command(127); // set last row
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else
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this->command(63); // set last row
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this->write_display_data();
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}
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void SSD1325::update() {
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this->do_update_();
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this->display();
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}
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void SSD1325::set_brightness(float brightness) {
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// validation
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if (brightness > 1)
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this->brightness_ = 1.0;
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else if (brightness < 0)
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this->brightness_ = 0;
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else
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this->brightness_ = brightness;
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// now write the new brightness level to the display
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this->command(SSD1325_SETCONTRAST);
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this->command(int(SSD1325_MAX_CONTRAST * (this->brightness_)));
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}
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bool SSD1325::is_on() { return this->is_on_; }
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void SSD1325::turn_on() {
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this->command(SSD1325_DISPLAYON);
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this->is_on_ = true;
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}
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void SSD1325::turn_off() {
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this->command(SSD1325_DISPLAYOFF);
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this->is_on_ = false;
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}
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int SSD1325::get_height_internal() {
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switch (this->model_) {
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case SSD1325_MODEL_128_32:
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return 32;
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case SSD1325_MODEL_128_64:
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return 64;
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case SSD1325_MODEL_96_16:
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return 16;
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case SSD1325_MODEL_64_48:
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return 48;
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case SSD1327_MODEL_128_128:
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return 128;
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default:
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return 0;
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}
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}
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int SSD1325::get_width_internal() {
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switch (this->model_) {
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case SSD1325_MODEL_128_32:
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case SSD1325_MODEL_128_64:
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case SSD1327_MODEL_128_128:
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return 128;
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case SSD1325_MODEL_96_16:
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return 96;
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case SSD1325_MODEL_64_48:
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return 64;
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default:
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return 0;
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}
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}
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size_t SSD1325::get_buffer_length_() {
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return size_t(this->get_width_internal()) * size_t(this->get_height_internal()) / SSD1325_PIXELSPERBYTE;
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}
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void HOT SSD1325::draw_absolute_pixel_internal(int x, int y, Color color) {
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if (x >= this->get_width_internal() || x < 0 || y >= this->get_height_internal() || y < 0)
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return;
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uint32_t color4 = display::ColorUtil::color_to_grayscale4(color);
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// where should the bits go in the big buffer array? math...
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uint16_t pos = (x / SSD1325_PIXELSPERBYTE) + (y * this->get_width_internal() / SSD1325_PIXELSPERBYTE);
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uint8_t shift = (x % SSD1325_PIXELSPERBYTE) * SSD1325_COLORSHIFT;
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// ensure 'color4' is valid (only 4 bits aka 1 nibble) and shift the bits left when necessary
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color4 = (color4 & SSD1325_COLORMASK) << shift;
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// first mask off the nibble we must change...
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this->buffer_[pos] &= (~SSD1325_COLORMASK >> shift);
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// ...then lay the new nibble back on top. done!
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this->buffer_[pos] |= color4;
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}
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void SSD1325::fill(Color color) {
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const uint32_t color4 = display::ColorUtil::color_to_grayscale4(color);
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uint8_t fill = (color4 & SSD1325_COLORMASK) | ((color4 & SSD1325_COLORMASK) << SSD1325_COLORSHIFT);
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for (uint32_t i = 0; i < this->get_buffer_length_(); i++)
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this->buffer_[i] = fill;
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}
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void SSD1325::init_reset_() {
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if (this->reset_pin_ != nullptr) {
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this->reset_pin_->setup();
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this->reset_pin_->digital_write(true);
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delay(1);
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// Trigger Reset
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this->reset_pin_->digital_write(false);
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delay(10);
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// Wake up
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this->reset_pin_->digital_write(true);
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}
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}
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const char *SSD1325::model_str_() {
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switch (this->model_) {
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case SSD1325_MODEL_128_32:
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return "SSD1325 128x32";
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case SSD1325_MODEL_128_64:
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return "SSD1325 128x64";
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case SSD1325_MODEL_96_16:
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return "SSD1325 96x16";
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case SSD1325_MODEL_64_48:
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return "SSD1325 64x48";
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case SSD1327_MODEL_128_128:
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return "SSD1327 128x128";
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default:
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return "Unknown";
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}
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}
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} // namespace ssd1325_base
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} // namespace esphome
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