sascha/esphome
1
0
Fork 0
mirror of https://github.com/esphome/esphome.git synced 2025-10-13 23:33:48 +01:00
Code Issues Releases Wiki Activity

Add waveshare 2.9inch e-Paper HAT (D) (#7906)

Browse Source 
Co-authored-by: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>
This commit is contained in:
Táta GEEK
2025-02-11 01:35:56 +01:00
committed by GitHub
parent abdf215d3a
commit b667ceaced
4 changed files with 130 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

87
esphome/components/waveshare_epaper/waveshare_epaper.cpp
View File

@@ -1211,6 +1211,93 @@ void WaveshareEPaper2P9InB::dump_config() {
LOG_UPDATE_INTERVAL(this);
}
// ========================================================
// Waveshare 2.9-inch E-Paper (Type D)
// Waveshare WIKI: https://www.waveshare.com/wiki/Pico-ePaper-2.9-D
// Datasheet: https://www.waveshare.com/w/upload/b/b5/2.9inch_e-Paper_(D)_Specification.pdf
// ========================================================
void WaveshareEPaper2P9InD::initialize() {
// EPD hardware init start
this->reset_();
// Booster Soft Start
this->command(0x06); // Command: BTST
this->data(0x17); // Soft start configuration Phase A
this->data(0x17); // Soft start configuration Phase B
this->data(0x17); // Soft start configuration Phase C
// Power Setting
this->command(0x01); // Command: PWR
this->data(0x03); // Intern DC/DC for VDH/VDL and VGH/VGL
this->data(0x00); // Default configuration VCOM_HV and VGHL_LV
this->data(0x2b); // VDH = 10.8 V
this->data(0x2b); // VDL = -10.8 V
// Power ON
this->command(0x04); // Command: PON
this->wait_until_idle_();
// Panel settings
this->command(0x00); // Command: PSR
this->data(0x1F); // LUT from OTP, black and white mode, default scan
// PLL Control
this->command(0x30); // Command: PLL
this->data(0x3A); // Default PLL frequency
// Resolution settings
this->command(0x61); // Command: TRES
this->data(0x80); // Width: 128
this->data(0x01); // Height MSB: 296
this->data(0x28); // Height LSB: 296
// VCOM and data interval settings
this->command(0x50); // Command: CDI
this->data(0x77);
// VCOM_DC settings
this->command(0x82); // Command: VDCS
this->data(0x12); // Dafault VCOM_DC
}
void WaveshareEPaper2P9InD::display() {
// Start transmitting old data (clearing buffer)
this->command(0x10); // Command: DTM1 (OLD frame data)
this->start_data_();
this->write_array(this->buffer_, this->get_buffer_length_());
this->end_data_();
// Start transmitting new data (updated content)
this->command(0x13); // Command: DTM2 (NEW frame data)
this->start_data_();
this->write_array(this->buffer_, this->get_buffer_length_());
this->end_data_();
// Refresh Display
this->command(0x12); // Command: DRF
this->wait_until_idle_();
// Enter Power Off
this->command(0x02); // Command: POF
this->wait_until_idle_();
// Enter Deep Sleep
this->command(0x07); // Command: DSLP
this->data(0xA5);
}
int WaveshareEPaper2P9InD::get_width_internal() { return 128; }
int WaveshareEPaper2P9InD::get_height_internal() { return 296; }
void WaveshareEPaper2P9InD::dump_config() {
LOG_DISPLAY("", "Waveshare E-Paper", this);
ESP_LOGCONFIG(TAG, " Model: 2.9in (D)");
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);
}
// DKE 2.9
// https://www.badge.team/docs/badges/sha2017/hardware/#e-ink-display-the-dke-group-depg0290b1
// https://www.badge.team/docs/badges/sha2017/hardware/DEPG0290B01V3.0.pdf