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Code Issues Releases Wiki Activity

Add partial update of GDEW029T5 e-paper display (#8162)

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Co-authored-by: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>
This commit is contained in:
mystster 2025-02-11 05:29:27 +09:00 committed by GitHub
parent 84836f15db
commit abdf215d3a
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GPG Key ID: B5690EEEBB952194
4 changed files with 236 additions and 30 deletions
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2
esphome/components/waveshare_epaper/display.py
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@ -120,7 +120,7 @@ MODELS = {
"2.13in-ttgo-b74": ("a", WaveshareEPaperTypeAModel.TTGO_EPAPER_2_13_IN_B74), "2.13in-ttgo-b74": ("a", WaveshareEPaperTypeAModel.TTGO_EPAPER_2_13_IN_B74),
"2.90in": ("a", WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN), "2.90in": ("a", WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN),
"2.90inv2": ("a", WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN_V2), "2.90inv2": ("a", WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN_V2),
"gdew029t5": ("b", GDEW029T5), "gdew029t5": ("c", GDEW029T5),
"2.70in": ("b", WaveshareEPaper2P7In), "2.70in": ("b", WaveshareEPaper2P7In),
"2.70in-b": ("b", WaveshareEPaper2P7InB), "2.70in-b": ("b", WaveshareEPaper2P7InB),
"2.70in-bv2": ("b", WaveshareEPaper2P7InBV2), "2.70in-bv2": ("b", WaveshareEPaper2P7InBV2),

240
esphome/components/waveshare_epaper/waveshare_epaper.cpp
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@ -1596,15 +1596,108 @@ void WaveshareEPaper2P9InV2R2::set_full_update_every(uint32_t full_update_every)
// Datasheet: // Datasheet:
// - https://v4.cecdn.yun300.cn/100001_1909185148/SSD1680.pdf // - https://v4.cecdn.yun300.cn/100001_1909185148/SSD1680.pdf
// - https://github.com/adafruit/Adafruit_EPD/blob/master/src/panels/ThinkInk_290_Grayscale4_T5.h // - https://github.com/adafruit/Adafruit_EPD/blob/master/src/panels/ThinkInk_290_Grayscale4_T5.h
// - https://github.com/ZinggJM/GxEPD2/blob/master/src/epd/GxEPD2_290_T5.cpp
// - http://www.e-paper-display.com/GDEW029T5%20V3.1%20Specification5c22.pdf?
// ======================================================== // ========================================================
void GDEW029T5::initialize() { // full screen update LUT
// from https://www.waveshare.com/w/upload/b/bb/2.9inch-e-paper-b-specification.pdf, page 37 static const uint8_t LUT_20_VCOMDC_29_5[] = {
// EPD hardware init start 0x00, 0x08, 0x00, 0x00, 0x00, 0x02, 0x60, 0x28, 0x28, 0x00, 0x00, 0x01, 0x00, 0x14, 0x00,
0x00, 0x00, 0x01, 0x00, 0x12, 0x12, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const uint8_t LUT_21_WW_29_5[] = {
0x40, 0x08, 0x00, 0x00, 0x00, 0x02, 0x90, 0x28, 0x28, 0x00, 0x00, 0x01, 0x40, 0x14,
0x00, 0x00, 0x00, 0x01, 0xA0, 0x12, 0x12, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const uint8_t LUT_22_BW_29_5[] = {
0x40, 0x08, 0x00, 0x00, 0x00, 0x02, 0x90, 0x28, 0x28, 0x00, 0x00, 0x01, 0x40, 0x14,
0x00, 0x00, 0x00, 0x01, 0xA0, 0x12, 0x12, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const uint8_t LUT_23_WB_29_5[] = {
0x80, 0x08, 0x00, 0x00, 0x00, 0x02, 0x90, 0x28, 0x28, 0x00, 0x00, 0x01, 0x80, 0x14,
0x00, 0x00, 0x00, 0x01, 0x50, 0x12, 0x12, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const uint8_t LUT_24_BB_29_5[] = {
0x80, 0x08, 0x00, 0x00, 0x00, 0x02, 0x90, 0x28, 0x28, 0x00, 0x00, 0x01, 0x80, 0x14,
0x00, 0x00, 0x00, 0x01, 0x50, 0x12, 0x12, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
// partial screen update LUT
static const uint8_t LUT_20_VCOMDC_PARTIAL_29_5[] = {
0x00, 0x20, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const uint8_t LUT_21_WW_PARTIAL_29_5[] = {
0x00, 0x20, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const uint8_t LUT_22_BW_PARTIAL_29_5[] = {
0x80, 0x20, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const uint8_t LUT_23_WB_PARTIAL_29_5[] = {
0x40, 0x20, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static const uint8_t LUT_24_BB_PARTIAL_29_5[] = {
0x00, 0x20, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
void GDEW029T5::power_on_() {
if (!this->power_is_on_) {
this->command(0x04);
this->wait_until_idle_();
}
this->power_is_on_ = true;
}
void GDEW029T5::power_off_() {
this->command(0x02);
this->wait_until_idle_();
this->power_is_on_ = false;
}
void GDEW029T5::deep_sleep() {
this->power_off_();
if (this->deep_sleep_between_updates_) {
this->command(0x07); // deep sleep
this->data(0xA5); // check code
ESP_LOGD(TAG, "go to deep sleep");
this->is_deep_sleep_ = true;
}
}
void GDEW029T5::init_display_() {
// from https://github.com/ZinggJM/GxEPD2/blob/master/src/epd/GxEPD2_290_T5.cpp
// Hardware Initialization
if (this->deep_sleep_between_updates_ && this->is_deep_sleep_) {
ESP_LOGI(TAG, "wake up from deep sleep");
this->reset_(); this->reset_();
this->is_deep_sleep_ = false;
}
// COMMAND POWER SETTINGS // COMMAND POWER SETTINGS
this->command(0x00); this->command(0x01);
this->data(0x03); this->data(0x03);
this->data(0x00); this->data(0x00);
this->data(0x2b); this->data(0x2b);
@ -1617,40 +1710,122 @@ void GDEW029T5::initialize() {
this->data(0x17); this->data(0x17);
this->data(0x17); this->data(0x17);
// COMMAND POWER ON this->power_on_();
this->command(0x04);
this->wait_until_idle_();
// Not sure what this does but it's in the Adafruit EPD library
this->command(0xFF);
this->wait_until_idle_();
// COMMAND PANEL SETTING // COMMAND PANEL SETTING
this->command(0x00); this->command(0x00);
// 128x296 resolution: 10 // 128x296 resolution: 10
// LUT from OTP: 0 // LUT from register: 1
// B/W mode (doesn't work): 1 // B/W mode (doesn't work): 1
// scan-up: 1 // scan-up: 1
// shift-right: 1 // shift-right: 1
// booster ON: 1 // booster ON: 1
// no soft reset: 1 // no soft reset: 1
this->data(0b10011111); this->data(0b10111111);
this->data(0x0d); // VCOM to 0V fast
this->command(0x30); // PLL setting
this->data(0x3a); // 3a 100HZ 29 150Hz 39 200HZ 31 171HZ
this->command(0x61); // resolution setting
this->data(this->get_width_internal());
this->data(this->get_height_internal() >> 8);
this->data(this->get_height_internal() & 0xFF);
// COMMAND RESOLUTION SETTING ESP_LOGD(TAG, "panel setting done");
// set to 128x296 by COMMAND PANEL SETTING
// COMMAND VCOM AND DATA INTERVAL SETTING
// use defaults for white border and ESPHome image polarity
// EPD hardware init end
} }
void GDEW029T5::initialize() {
// from https://www.waveshare.com/w/upload/b/bb/2.9inch-e-paper-b-specification.pdf, page 37
if (this->reset_pin_ != nullptr)
this->deep_sleep_between_updates_ = true;
// old buffer for partial update
ExternalRAMAllocator<uint8_t> allocator(ExternalRAMAllocator<uint8_t>::ALLOW_FAILURE);
this->old_buffer_ = allocator.allocate(this->get_buffer_length_());
if (this->old_buffer_ == nullptr) {
ESP_LOGE(TAG, "Could not allocate old buffer for display!");
return;
}
for (size_t i = 0; i < this->get_buffer_length_(); i++) {
this->old_buffer_[i] = 0xFF;
}
}
// initialize for full(normal) update
void GDEW029T5::init_full_() {
this->init_display_();
this->command(0x82); // vcom_DC setting
this->data(0x08);
this->command(0X50); // VCOM AND DATA INTERVAL SETTING
this->data(0x97); // WBmode:VBDF 17|D7 VBDW 97 VBDB 57 WBRmode:VBDF F7 VBDW 77 VBDB 37 VBDR B7
this->command(0x20);
this->write_lut_(LUT_20_VCOMDC_29_5, sizeof(LUT_20_VCOMDC_29_5));
this->command(0x21);
this->write_lut_(LUT_21_WW_29_5, sizeof(LUT_21_WW_29_5));
this->command(0x22);
this->write_lut_(LUT_22_BW_29_5, sizeof(LUT_22_BW_29_5));
this->command(0x23);
this->write_lut_(LUT_23_WB_29_5, sizeof(LUT_23_WB_29_5));
this->command(0x24);
this->write_lut_(LUT_24_BB_29_5, sizeof(LUT_24_BB_29_5));
ESP_LOGD(TAG, "initialized full update");
}
// initialzie for partial update
void GDEW029T5::init_partial_() {
this->init_display_();
this->command(0x82); // vcom_DC setting
this->data(0x08);
this->command(0X50); // VCOM AND DATA INTERVAL SETTING
this->data(0x17); // WBmode:VBDF 17|D7 VBDW 97 VBDB 57 WBRmode:VBDF F7 VBDW 77 VBDB 37 VBDR B7
this->command(0x20);
this->write_lut_(LUT_20_VCOMDC_PARTIAL_29_5, sizeof(LUT_20_VCOMDC_PARTIAL_29_5));
this->command(0x21);
this->write_lut_(LUT_21_WW_PARTIAL_29_5, sizeof(LUT_21_WW_PARTIAL_29_5));
this->command(0x22);
this->write_lut_(LUT_22_BW_PARTIAL_29_5, sizeof(LUT_22_BW_PARTIAL_29_5));
this->command(0x23);
this->write_lut_(LUT_23_WB_PARTIAL_29_5, sizeof(LUT_23_WB_PARTIAL_29_5));
this->command(0x24);
this->write_lut_(LUT_24_BB_PARTIAL_29_5, sizeof(LUT_24_BB_PARTIAL_29_5));
ESP_LOGD(TAG, "initialized partial update");
}
void HOT GDEW029T5::display() { void HOT GDEW029T5::display() {
bool full_update = this->at_update_ == 0;
if (full_update) {
this->init_full_();
} else {
this->init_partial_();
this->command(0x91); // partial in
// set partial window
this->command(0x90);
// this->data(0);
this->data(0);
// this->data(0);
this->data((this->get_width_internal() - 1) % 256);
this->data(0);
this->data(0);
this->data(((this->get_height_internal() - 1)) / 256);
this->data(((this->get_height_internal() - 1)) % 256);
this->data(0x01);
}
// input old buffer data
this->command(0x10);
delay(2);
this->start_data_();
for (size_t i = 0; i < this->get_buffer_length_(); i++) {
this->write_byte(this->old_buffer_[i]);
}
this->end_data_();
delay(2);
// COMMAND DATA START TRANSMISSION 2 (B/W only) // COMMAND DATA START TRANSMISSION 2 (B/W only)
this->command(0x13); this->command(0x13);
delay(2); delay(2);
this->start_data_(); this->start_data_();
for (size_t i = 0; i < this->get_buffer_length_(); i++) { for (size_t i = 0; i < this->get_buffer_length_(); i++) {
this->write_byte(this->buffer_[i]); this->write_byte(this->buffer_[i]);
this->old_buffer_[i] = this->buffer_[i];
} }
this->end_data_(); this->end_data_();
delay(2); delay(2);
@ -1660,10 +1835,28 @@ void HOT GDEW029T5::display() {
delay(2); delay(2);
this->wait_until_idle_(); this->wait_until_idle_();
// COMMAND POWER OFF if (full_update) {
// NOTE: power off < deep sleep ESP_LOGD(TAG, "full update done");
this->command(0x02); } else {
this->command(0x92); // partial out
ESP_LOGD(TAG, "partial update done");
}
this->at_update_ = (this->at_update_ + 1) % this->full_update_every_;
// COMMAND deep sleep
this->deep_sleep();
} }
void GDEW029T5::write_lut_(const uint8_t *lut, const uint8_t size) {
// COMMAND WRITE LUT REGISTER
this->start_data_();
for (uint8_t i = 0; i < size; i++)
this->write_byte(lut[i]);
this->end_data_();
}
void GDEW029T5::set_full_update_every(uint32_t full_update_every) { this->full_update_every_ = full_update_every; }
int GDEW029T5::get_width_internal() { return 128; } int GDEW029T5::get_width_internal() { return 128; }
int GDEW029T5::get_height_internal() { return 296; } int GDEW029T5::get_height_internal() { return 296; }
void GDEW029T5::dump_config() { void GDEW029T5::dump_config() {
@ -1672,6 +1865,7 @@ void GDEW029T5::dump_config() {
LOG_PIN(" Reset Pin: ", this->reset_pin_); LOG_PIN(" Reset Pin: ", this->reset_pin_);
LOG_PIN(" DC Pin: ", this->dc_pin_); LOG_PIN(" DC Pin: ", this->dc_pin_);
LOG_PIN(" Busy Pin: ", this->busy_pin_); LOG_PIN(" Busy Pin: ", this->busy_pin_);
ESP_LOGCONFIG(TAG, " Full Update Every: %" PRIu32, this->full_update_every_);
LOG_UPDATE_INTERVAL(this); LOG_UPDATE_INTERVAL(this);
} }

21
esphome/components/waveshare_epaper/waveshare_epaper.h
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@ -254,16 +254,27 @@ class GDEW029T5 : public WaveshareEPaper {
void dump_config() override; void dump_config() override;
void deep_sleep() override { void deep_sleep() override;
// COMMAND DEEP SLEEP void set_full_update_every(uint32_t full_update_every);
this->command(0x07);
this->data(0xA5); // check byte
}
protected: protected:
void init_display_();
void init_full_();
void init_partial_();
void write_lut_(const uint8_t *lut, uint8_t size);
void power_off_();
void power_on_();
int get_width_internal() override; int get_width_internal() override;
int get_height_internal() override; int get_height_internal() override;
private:
uint32_t full_update_every_{30};
uint32_t at_update_{0};
bool deep_sleep_between_updates_{false};
bool power_is_on_{false};
bool is_deep_sleep_{false};
uint8_t *old_buffer_{nullptr};
}; };
class WaveshareEPaper2P7InV2 : public WaveshareEPaper { class WaveshareEPaper2P7InV2 : public WaveshareEPaper {

1
tests/components/waveshare_epaper/common.yaml
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@ -459,6 +459,7 @@ display:
reset_pin: reset_pin:
allow_other_uses: true allow_other_uses: true
number: ${reset_pin} number: ${reset_pin}
full_update_every: 30
lambda: |- lambda: |-
it.rectangle(0, 0, it.get_width(), it.get_height()); it.rectangle(0, 0, it.get_width(), it.get_height());