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Initial Commit for the GDEY075Z08 7.5in BWR Display

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This commit is contained in:
DJGummikuh 2024-08-10 22:48:18 +00:00
parent f13cf1f7a0
commit 1410c2381c
3 changed files with 312 additions and 2 deletions
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7
esphome/components/waveshare_epaper/display.py
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@ -1,7 +1,7 @@
import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import core, pins
import esphome.codegen as cg
from esphome.components import display, spi
import esphome.config_validation as cv
from esphome.const import (
CONF_BUSY_PIN,
CONF_DC_PIN,
@ -99,6 +99,8 @@ WaveshareEPaper13P3InK = waveshare_epaper_ns.class_(
)
GDEW0154M09 = waveshare_epaper_ns.class_("GDEW0154M09", WaveshareEPaper)
GDEY075Z08 = waveshare_epaper_ns.class_("GDEY075Z08", WaveshareEPaperBWR)
WaveshareEPaperTypeAModel = waveshare_epaper_ns.enum("WaveshareEPaperTypeAModel")
WaveshareEPaperTypeBModel = waveshare_epaper_ns.enum("WaveshareEPaperTypeBModel")
@ -137,6 +139,7 @@ MODELS = {
"2.13inv3": ("c", WaveshareEPaper2P13InV3),
"1.54in-m5coreink-m09": ("c", GDEW0154M09),
"13.3in-k": ("b", WaveshareEPaper13P3InK),
"7.5in-bgr-gd": ("c", GDEY075Z08),
}
RESET_PIN_REQUIRED_MODELS = ("2.13inv2", "2.13in-ttgo-b74")

275
esphome/components/waveshare_epaper/waveshare_epaper.cpp
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@ -1507,6 +1507,281 @@ void WaveshareEPaper2P9InV2R2::set_full_update_every(uint32_t full_update_every)
this->full_update_every_ = full_update_every;
}
// ========================================================
// Good Display 7.5in black/white/red
// ========================================================
void GDEY075Z08::calculate_CRCs_(bool fullSync) {
uint16_t width_b = this->get_width_internal() / (this->seg_x_ * 8); // width of individual segments in bytes
uint16_t height_px = this->get_height_internal() / this->seg_x_; // height of individual segments in pixel
uint16_t segment_size = width_b * height_px;
uint32_t buffer_half_size = this->get_width_internal() * this->get_height_internal() / 2;
uint8_t seg_x, seg_y, x, y;
boolean found_change = false;
for (seg_y = 0; seg_y < this->seg_y_; seg_y++) { // vertically iterate through the number of lines (px)
for (seg_x = 0; seg_x < this->seg_x_; seg_x++) { // horizontally iterate through number of columns (px)
uint8_t *segment = new uint8_t[segment_size * 2]; // create segment array (muliply by 2 since we need 2 byte per
// 8 pixel, 1 for black and 1 for red)
for (y = 0; y < height_px; y++) {
for (x = 0; x < width_b; x++) {
uint16_t segment_position = x + y * width_b; // linear position inside the segment in bytes
uint16_t global_position = seg_y * height_px * this->get_width_internal() / 8 +
y * this->get_width_internal() / 8 + seg_x * width_b + x;
segment[segment_position] = buffer_[global_position]; // copy black data
segment[segment_position + segment_size] = buffer_[global_position + buffer_half_size]; // copy red data
}
}
// now calculate a CRC16_checksum and compare it against the stored value.
uint16_t segment_crc = crc16(segment, segment_size * 2, 65535U, 40961U, false, false);
if (fullSync) {
// no need to compare, we're in the first run, just place it. This is called by full refresh only
checksums_[seg_x + seg_y * width_b] = segment_crc;
} else {
boolean changed = checksums_[seg_x + seg_y * width_b] != segment_crc;
checksums_[seg_x + seg_y * width_b] = segment_crc;
if (changed && !found_change) {
found_change = true;
first_segment_ = seg_x + seg_y * width_b;
} else if (changed) {
// Segment changed but we already found a change before, so
last_segment_ = seg_x + seg_y * width_b;
} else {
// do nothing, segment didn't change.
}
}
}
}
}
void GDEY075Z08::set_full_update_every(uint32_t full_update_every) { this->full_update_every_ = full_update_every; }
void GDEY075Z08::init_fast() {
this->reset_(); // Module reset
this->command(0x00); // PANNEL SETTING
this->data(0x0F); // KW-3f KWR-2F BWROTP 0f BWOTP 1f
this->command(0x04);
delay(100);
this->wait_until_idle_(); // waiting for the electronic paper IC to release the idle signal
// Enhanced display drive(Add 0x06 command)
this->command(0x06); // Booster Soft Start
this->data(0x27);
this->data(0x27);
this->data(0x18);
this->data(0x17);
this->command(0xE0);
this->data(0x02);
this->command(0xE5);
this->data(0x5A);
this->command(0X50); // VCOM AND DATA INTERVAL SETTING
this->data(0x11);
this->data(0x07);
}
void GDEY075Z08::initialize() {
this->reset_();
this->at_update_ = 0;
checksums_ =
new uint16_t[seg_x_ *
seg_y_]; // initialize the checksums array. Will be filed and maintained by calculate_CRCs_()
ESP_LOGE(TAG, "Before Powerup, after Reset");
this->command(0x01); // POWER SETTING
this->data(0x07);
this->data(0x07); // VGH=20V,VGL=-20V
this->data(0x3f); // VDH=15V
this->data(0x3f); // VDL=-15V
// Enhanced display drive(Add 0x06 command)
this->command(0x06); // Booster Soft Start
this->data(0x17);
this->data(0x17);
this->data(0x28);
this->data(0x17);
ESP_LOGD(TAG, "Powering up now.");
this->command(0x04); // POWER ON
wait_until_idle_(); // waiting for the electronic paper IC to release the idle signal
this->command(0X00); // PANNEL SETTING
this->data(0x0F); // KW-3f KWR-2F BWROTP 0f BWOTP 1f
this->command(0x61); // resolution setting
this->data(this->get_width_internal() / 256);
this->data(this->get_width_internal() % 256);
this->data(this->get_height_internal() / 256);
this->data(this->get_height_internal() % 256);
this->command(0X15);
this->data(0x00);
this->command(0X50); // VCOM AND DATA INTERVAL SETTING
this->data(0x11); // 0x10 --------------
this->data(0x07);
this->command(0X60); // TCON SETTING
this->data(0x22);
ESP_LOGE(TAG, "Initialization finished");
}
void GDEY075Z08::loop() {
if (this->waiting_for_idle && this->busy_pin_) {
// reset waiting_for idle, then send the display to deep sleep.
this->deep_sleep();
this->waiting_for_idle = false;
}
}
void HOT GDEY075Z08::display() {
ESP_LOGD(TAG, "Running through display()");
if (this->waiting_for_idle) {
// still waiting for the previous busy to ebb off, skip drawing the display.
return;
}
bool partial = this->at_update_ != 0;
this->at_update_ = (this->at_update_ + 1) % this->full_update_every_;
unsigned int i;
unsigned int half_length = this->get_buffer_length_() / 2u;
if (false) {
ESP_LOGI(TAG, "Evaluating Partial Screen Update");
this->calculate_CRCs_(false);
unsigned int first_px = half_length;
unsigned int last_px = 0;
bool found_change = false;
for (i = 0; i < half_length; i++) {
if (i % 1000 == 0) {
ESP_LOGD(TAG, "1000 Pixels evaluated");
}
unsigned int second_half = i + half_length;
// We look at the first half and second half at the same time and OR both values.
// We don't really care, WHICH of the halfs has a non-null value, since we have to update both maps regardless.
bool differ = this->buffer_[i] == last_buffer_[i] || this->buffer_[second_half] == last_buffer_[second_half];
if (differ) {
// last_buffer_ and buffer_ differ
if (!found_change) {
// found the first pixel
found_change = true;
first_px = i;
last_px = i;
} else {
// found another pixel, the last we find this way will be the last
last_px = i;
}
}
}
ESP_LOGD(TAG, "Partial Screen Update Evaluation complete");
if (!found_change) {
// jump out, without waking the display, so we don't have to send it back to sleep.
return;
}
ESP_LOGD(TAG, "Found a change, initializing display for partial backup");
unsigned int x_start, y_start, x_end, y_end;
x_start = first_px % get_width_internal() / 8;
y_start = first_px / get_width_internal() / 8;
x_end = last_px % get_width_internal() / 8;
y_end = last_px / get_width_internal() / 8;
this->init_fast(); // Wake up Display.
this->command(0x91); // Enter partial mode
this->command(0x90); // Enter resolution Setting (?)
this->data(x_start / 32);
this->data(x_start % 32);
this->data(x_end / 32);
this->data(x_end % 32 - 1);
this->data(y_start / 32);
this->data(y_start % 32);
this->data(y_end / 32);
this->data(y_end % 32 - 1);
this->data(0x01);
this->command(0x10); // write black data
for (i = first_px; i <= last_px; i++) {
this->data(~this->buffer_[i]);
}
this->command(0x13);
for (i = first_px; i <= last_px; i++) {
this->data(this->buffer_[i + half_length]);
}
this->command(0x12); // Display Refresh
delay(1);
this->command(0x92); // Exit Partial mode
} else {
ESP_LOGI(TAG, "Performing Full Screen Update");
calculate_CRCs_(true); // reset the crc table.
this->init_fast(); // Wake up display.
// Write Data
this->command(0x10); // Transfer old data
ESP_LOGI(TAG, "Writing Black Data...");
for (i = 0; i < half_length; i++) {
this->data(~this->buffer_[i]); // Transfer the black display
// last_buffer_[i] = this->buffer_[i];
}
this->command(0x13); // Transfer new data
ESP_LOGI(TAG, "Writing Red Data...");
for (i = half_length; i < this->get_buffer_length_(); i++) {
this->data(this->buffer_[i]); // Transfer the red displayed data
// last_buffer_[i] = this->buffer_[i];
}
ESP_LOGI(TAG, "Image Render complete.");
this->command(0x12); // this triggers a refresh, everything before is just preparatory.
}
delay(1); // This delay needs to be here. 200µS at least.
this->waiting_for_idle = true; // BUSY should be LOW now, setting waiting_for_idle to true. This will cause loop() to
// poll for BUSY to go HIGH again, then enter deep sleep
}
void GDEY075Z08::dump_config() {
LOG_DISPLAY("", "Waveshare E-Paper (Good Display)", this);
ESP_LOGCONFIG(TAG, " Model: 7.5in Black/Red/White GDEW029T5");
LOG_PIN(" Reset Pin: ", this->reset_pin_);
LOG_PIN(" DC Pin: ", this->dc_pin_);
LOG_PIN(" Busy Pin: ", this->busy_pin_);
LOG_UPDATE_INTERVAL(this);
}
void GDEY075Z08::deep_sleep() {
// COMMAND DEEP SLEEP
this->command(0x50);
this->data(0xF7); // check byte
this->command(0x02);
delay(100);
this->command(0x07);
this->data(0xA5);
ESP_LOGI(TAG, "Display now in deep sleep.");
}
bool GDEY075Z08::wait_until_idle_() {
if (this->busy_pin_ == nullptr) {
return true;
}
const uint32_t start = millis();
while (this->busy_pin_->digital_read()) {
if (millis() - start > this->idle_timeout_()) {
ESP_LOGE(TAG, "Timeout while displaying image!");
return false;
}
App.feed_wdt();
delay(10);
}
return true;
}
uint32_t GDEY075Z08::idle_timeout_() { return 40000; }
void GDEY075Z08::reset_() {
// RST is inverse from other einks in this project
if (this->reset_pin_ != nullptr) {
this->reset_pin_->digital_write(false);
delay(10);
this->reset_pin_->digital_write(true);
delay(10);
}
this->wait_until_idle_(); // wait for the display to return from busy.
}
// ========================================================
// Good Display 2.9in black/white/grey
// Datasheet:

32
esphome/components/waveshare_epaper/waveshare_epaper.h
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@ -1,6 +1,7 @@
#pragma once
#include "esphome/core/component.h"
#include "esphome/core/helpers.h"
#include "esphome/components/spi/spi.h"
#include "esphome/components/display/display_buffer.h"
@ -228,6 +229,37 @@ class WaveshareEPaper2P7InBV2 : public WaveshareEPaperBWR {
int get_height_internal() override;
};
class GDEY075Z08 : public WaveshareEPaperBWR {
public:
void initialize() override;
void loop() override;
void display() override;
void dump_config() override;
void deep_sleep() override;
void set_full_update_every(uint32_t full_update_every);
void set_seg_x(uint8_t value) { this->seg_x_ = value; }
void set_seg_y(uint8_t value) { this->seg_y_ = value; }
protected:
bool wait_until_idle_();
int get_width_internal() override { return 800; }
int get_height_internal() override { return 480; }
private:
uint32_t full_update_every_{30};
uint32_t at_update_{0};
uint8_t seg_x_{20}; // number of horizontal segments for partial update
uint8_t seg_y_{10}; // number of vertical segments for partial update.
uint16_t first_segment_ = 0;
uint16_t last_segment_ = 0;
uint16_t *checksums_ = nullptr;
void calculate_CRCs_(bool fullSync);
bool waiting_for_idle = false;
uint32_t idle_timeout_() override;
void reset_();
void init_fast();
};
class GDEW029T5 : public WaveshareEPaper {
public:
void initialize() override;