mirror of
https://github.com/esphome/esphome.git
synced 2024-12-02 11:44:13 +01:00
178 lines
6.6 KiB
C++
178 lines
6.6 KiB
C++
#include "ssd1327_base.h"
|
|
#include "esphome/core/log.h"
|
|
#include "esphome/core/helpers.h"
|
|
|
|
namespace esphome {
|
|
namespace ssd1327_base {
|
|
|
|
static const char *const TAG = "ssd1327";
|
|
|
|
static const uint8_t SSD1327_MAX_CONTRAST = 127;
|
|
static const uint8_t SSD1327_COLORMASK = 0x0f;
|
|
static const uint8_t SSD1327_COLORSHIFT = 4;
|
|
static const uint8_t SSD1327_PIXELSPERBYTE = 2;
|
|
|
|
static const uint8_t SSD1327_SETCOLUMNADDRESS = 0x15;
|
|
static const uint8_t SSD1327_SETROWADDRESS = 0x75;
|
|
static const uint8_t SSD1327_SETCONTRAST = 0x81;
|
|
static const uint8_t SSD1327_SETREMAP = 0xA0;
|
|
static const uint8_t SSD1327_SETSTARTLINE = 0xA1;
|
|
static const uint8_t SSD1327_SETOFFSET = 0xA2;
|
|
static const uint8_t SSD1327_NORMALDISPLAY = 0xA4;
|
|
static const uint8_t SSD1327_DISPLAYALLON = 0xA5;
|
|
static const uint8_t SSD1327_DISPLAYALLOFF = 0xA6;
|
|
static const uint8_t SSD1327_INVERTDISPLAY = 0xA7;
|
|
static const uint8_t SSD1327_SETMULTIPLEX = 0xA8;
|
|
static const uint8_t SSD1327_FUNCTIONSELECTIONA = 0xAB;
|
|
static const uint8_t SSD1327_DISPLAYOFF = 0xAE;
|
|
static const uint8_t SSD1327_DISPLAYON = 0xAF;
|
|
static const uint8_t SSD1327_SETPHASELENGTH = 0xB1;
|
|
static const uint8_t SSD1327_SETFRONTCLOCKDIVIDER = 0xB3;
|
|
static const uint8_t SSD1327_SETGPIO = 0xB5;
|
|
static const uint8_t SSD1327_SETSECONDPRECHARGEPERIOD = 0xB6;
|
|
static const uint8_t SSD1327_SETGRAYSCALETABLE = 0xB8;
|
|
static const uint8_t SSD1327_SELECTDEFAULTLINEARGRAYSCALETABLE = 0xB9;
|
|
static const uint8_t SSD1327_SETPRECHARGEVOLTAGE = 0xBC;
|
|
static const uint8_t SSD1327_SETVCOMHVOLTAGE = 0xBE;
|
|
static const uint8_t SSD1327_FUNCTIONSELECTIONB = 0xD5;
|
|
static const uint8_t SSD1327_SETCOMMANDLOCK = 0xFD;
|
|
static const uint8_t SSD1327_HORIZONTALSCROLLRIGHTSETUP = 0x26;
|
|
static const uint8_t SSD1327_HORIZONTALSCROLLLEFTSETUP = 0x27;
|
|
static const uint8_t SSD1327_DEACTIVATESCROLL = 0x2E;
|
|
static const uint8_t SSD1327_ACTIVATESCROLL = 0x2F;
|
|
|
|
void SSD1327::setup() {
|
|
this->init_internal_(this->get_buffer_length_());
|
|
|
|
this->turn_off(); // display OFF
|
|
this->command(SSD1327_SETFRONTCLOCKDIVIDER); // set osc division
|
|
this->command(0xF1); // 145
|
|
this->command(SSD1327_SETMULTIPLEX); // multiplex ratio
|
|
this->command(0x7f); // duty = height - 1
|
|
this->command(SSD1327_SETOFFSET); // set display offset
|
|
this->command(0x00); // 0
|
|
this->command(SSD1327_SETSTARTLINE); // set start line
|
|
this->command(0x00); // ...
|
|
this->command(SSD1327_SETREMAP); // set segment remapping
|
|
this->command(0x53); // COM bottom-up, split odd/even, enable column and nibble remapping
|
|
this->command(SSD1327_SETGRAYSCALETABLE);
|
|
// gamma ~2.2
|
|
this->command(0);
|
|
this->command(1);
|
|
this->command(2);
|
|
this->command(3);
|
|
this->command(6);
|
|
this->command(8);
|
|
this->command(12);
|
|
this->command(16);
|
|
this->command(20);
|
|
this->command(26);
|
|
this->command(32);
|
|
this->command(39);
|
|
this->command(46);
|
|
this->command(54);
|
|
this->command(63);
|
|
this->command(SSD1327_SETPHASELENGTH);
|
|
this->command(0x55);
|
|
this->command(SSD1327_SETVCOMHVOLTAGE); // Set High Voltage Level of COM Pin
|
|
this->command(0x1C);
|
|
this->command(SSD1327_NORMALDISPLAY); // set display mode
|
|
set_brightness(this->brightness_);
|
|
this->fill(Color::BLACK); // clear display - ensures we do not see garbage at power-on
|
|
this->display(); // ...write buffer, which actually clears the display's memory
|
|
this->turn_on(); // display ON
|
|
}
|
|
void SSD1327::display() {
|
|
this->command(SSD1327_SETCOLUMNADDRESS); // set column address
|
|
this->command(0x00); // set column start address
|
|
this->command(0x3F); // set column end address
|
|
this->command(SSD1327_SETROWADDRESS); // set row address
|
|
this->command(0x00); // set row start address
|
|
this->command(127); // set last row
|
|
|
|
this->write_display_data();
|
|
}
|
|
void SSD1327::update() {
|
|
if (!this->is_failed()) {
|
|
this->do_update_();
|
|
this->display();
|
|
}
|
|
}
|
|
void SSD1327::set_brightness(float brightness) {
|
|
// validation
|
|
this->brightness_ = clamp(brightness, 0.0F, 1.0F);
|
|
// now write the new brightness level to the display
|
|
this->command(SSD1327_SETCONTRAST);
|
|
this->command(int(SSD1327_MAX_CONTRAST * (this->brightness_)));
|
|
}
|
|
bool SSD1327::is_on() { return this->is_on_; }
|
|
void SSD1327::turn_on() {
|
|
this->command(SSD1327_DISPLAYON);
|
|
this->is_on_ = true;
|
|
}
|
|
void SSD1327::turn_off() {
|
|
this->command(SSD1327_DISPLAYOFF);
|
|
this->is_on_ = false;
|
|
}
|
|
int SSD1327::get_height_internal() {
|
|
switch (this->model_) {
|
|
case SSD1327_MODEL_128_128:
|
|
return 128;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
int SSD1327::get_width_internal() {
|
|
switch (this->model_) {
|
|
case SSD1327_MODEL_128_128:
|
|
return 128;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
size_t SSD1327::get_buffer_length_() {
|
|
return size_t(this->get_width_internal()) * size_t(this->get_height_internal()) / SSD1327_PIXELSPERBYTE;
|
|
}
|
|
void HOT SSD1327::draw_absolute_pixel_internal(int x, int y, Color color) {
|
|
if (x >= this->get_width_internal() || x < 0 || y >= this->get_height_internal() || y < 0)
|
|
return;
|
|
uint32_t color4 = display::ColorUtil::color_to_grayscale4(color);
|
|
// where should the bits go in the big buffer array? math...
|
|
uint16_t pos = (x / SSD1327_PIXELSPERBYTE) + (y * this->get_width_internal() / SSD1327_PIXELSPERBYTE);
|
|
uint8_t shift = (x % SSD1327_PIXELSPERBYTE) * SSD1327_COLORSHIFT;
|
|
// ensure 'color4' is valid (only 4 bits aka 1 nibble) and shift the bits left when necessary
|
|
color4 = (color4 & SSD1327_COLORMASK) << shift;
|
|
// first mask off the nibble we must change...
|
|
this->buffer_[pos] &= (~SSD1327_COLORMASK >> shift);
|
|
// ...then lay the new nibble back on top. done!
|
|
this->buffer_[pos] |= color4;
|
|
}
|
|
void SSD1327::fill(Color color) {
|
|
const uint32_t color4 = display::ColorUtil::color_to_grayscale4(color);
|
|
uint8_t fill = (color4 & SSD1327_COLORMASK) | ((color4 & SSD1327_COLORMASK) << SSD1327_COLORSHIFT);
|
|
for (uint32_t i = 0; i < this->get_buffer_length_(); i++)
|
|
this->buffer_[i] = fill;
|
|
}
|
|
void SSD1327::init_reset_() {
|
|
if (this->reset_pin_ != nullptr) {
|
|
this->reset_pin_->setup();
|
|
this->reset_pin_->digital_write(true);
|
|
delay(1);
|
|
// Trigger Reset
|
|
this->reset_pin_->digital_write(false);
|
|
delay(10);
|
|
// Wake up
|
|
this->reset_pin_->digital_write(true);
|
|
}
|
|
}
|
|
const char *SSD1327::model_str_() {
|
|
switch (this->model_) {
|
|
case SSD1327_MODEL_128_128:
|
|
return "SSD1327 128x128";
|
|
default:
|
|
return "Unknown";
|
|
}
|
|
}
|
|
|
|
} // namespace ssd1327_base
|
|
} // namespace esphome
|