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Code Issues Releases Wiki Activity

Add GDEY029T94 support (#7931)

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Co-authored-by: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>
This commit is contained in:
Daniël Koek
2025-02-11 23:16:33 +00:00
committed by GitHub
parent 0401ee9428
commit a2f1b90238
3 changed files with 95 additions and 1 deletions
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75
esphome/components/waveshare_epaper/waveshare_epaper.cpp
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@@ -1677,9 +1677,82 @@ int WaveshareEPaper2P9InV2R2::get_width_controller() { return this->get_width_in
void WaveshareEPaper2P9InV2R2::set_full_update_every(uint32_t full_update_every) {
this->full_update_every_ = full_update_every;
}
// ========================================================
// Good Display 2.9in black/white
// Datasheet:
// - https://files.seeedstudio.com/wiki/Other_Display/29-epaper/GDEY029T94.pdf
// -
// https://github.com/Allen-Kuang/e-ink_Demo/blob/main/2.9%20inch%20E-paper%20-%20monocolor%20128x296/example/Display_EPD_W21.cpp
// ========================================================
void GDEY029T94::initialize() {
// EPD hardware init start
this->reset_();
this->wait_until_idle_();
this->command(0x12); // SWRESET
this->wait_until_idle_();
this->command(0x01); // Driver output control
this->data((this->get_height_internal() - 1) % 256);
this->data((this->get_height_internal() - 1) / 256);
this->data(0x00);
this->command(0x11); // data entry mode
this->data(0x03);
this->command(0x44); // set Ram-X address start/end position
this->data(0x00);
this->data(this->get_width_internal() / 8 - 1);
this->command(0x45); // set Ram-Y address start/end position
this->data(0x00);
this->data(0x00);
this->data((this->get_height_internal() - 1) % 256);
this->data((this->get_height_internal() - 1) / 256);
this->command(0x3C); // BorderWavefrom
this->data(0x05);
this->command(0x21); // Display update control
this->data(0x00);
this->data(0x80);
this->command(0x18); // Read built-in temperature sensor
this->data(0x80);
this->command(0x4E); // set RAM x address count to 0;
this->data(0x00);
this->command(0x4F); // set RAM y address count to 0X199;
this->command(0x00);
this->command(0x00);
this->wait_until_idle_();
}
void HOT GDEY029T94::display() {
this->command(0x24); // write RAM for black(0)/white (1)
this->start_data_();
for (uint32_t i = 0; i < this->get_buffer_length_(); i++) {
this->write_byte(this->buffer_[i]);
}
this->end_data_();
this->command(0x22); // Display Update Control
this->data(0xF7);
this->command(0x20); // Activate Display Update Sequence
this->wait_until_idle_();
}
int GDEY029T94::get_width_internal() { return 128; }
int GDEY029T94::get_height_internal() { return 296; }
void GDEY029T94::dump_config() {
LOG_DISPLAY("", "E-Paper (Good Display)", this);
ESP_LOGCONFIG(TAG, " Model: 2.9in GDEY029T94");
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);
}
// ========================================================
// Good Display 2.9in black/white/grey
// Good Display 2.9in black/white
// Datasheet:
// - https://v4.cecdn.yun300.cn/100001_1909185148/SSD1680.pdf
// - https://github.com/adafruit/Adafruit_EPD/blob/master/src/panels/ThinkInk_290_Grayscale4_T5.h