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Add support for Waveshare E-Paper 4.2" B V2 (#1610)
Co-authored-by: Otto winter <otto@otto-winter.com>
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6516c64e67
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3 changed files with 89 additions and 0 deletions
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@ -31,6 +31,9 @@ WaveshareEPaper2P9InB = waveshare_epaper_ns.class_(
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WaveshareEPaper4P2In = waveshare_epaper_ns.class_(
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"WaveshareEPaper4P2In", WaveshareEPaper
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)
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WaveshareEPaper4P2InBV2 = waveshare_epaper_ns.class_(
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"WaveshareEPaper4P2InBV2", WaveshareEPaper
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)
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WaveshareEPaper5P8In = waveshare_epaper_ns.class_(
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"WaveshareEPaper5P8In", WaveshareEPaper
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)
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@ -56,6 +59,7 @@ MODELS = {
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"2.70in": ("b", WaveshareEPaper2P7In),
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"2.90in-b": ("b", WaveshareEPaper2P9InB),
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"4.20in": ("b", WaveshareEPaper4P2In),
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"4.20in-bv2": ("b", WaveshareEPaper4P2InBV2),
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"5.83in": ("b", WaveshareEPaper5P8In),
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"7.50in": ("b", WaveshareEPaper7P5In),
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"7.50inv2": ("b", WaveshareEPaper7P5InV2),
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@ -765,6 +765,62 @@ void WaveshareEPaper4P2In::dump_config() {
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LOG_UPDATE_INTERVAL(this);
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}
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// ========================================================
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// 4.20in Type B (LUT from OTP)
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// Datasheet:
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// - https://www.waveshare.com/w/upload/2/20/4.2inch-e-paper-module-user-manual-en.pdf
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// - https://github.com/waveshare/e-Paper/blob/master/RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_4in2b_V2.c
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// ========================================================
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void WaveshareEPaper4P2InBV2::initialize() {
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// these exact timings are required for a proper reset/init
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this->reset_pin_->digital_write(false);
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delay(2);
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this->reset_pin_->digital_write(true);
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delay(200); // NOLINT
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// COMMAND POWER ON
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this->command(0x04);
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this->wait_until_idle_();
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// COMMAND PANEL SETTING
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this->command(0x00);
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this->data(0x0f); // LUT from OTP
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}
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void HOT WaveshareEPaper4P2InBV2::display() {
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// COMMAND DATA START TRANSMISSION 1 (B/W data)
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this->command(0x10);
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this->start_data_();
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this->write_array(this->buffer_, this->get_buffer_length_());
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this->end_data_();
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// COMMAND DATA START TRANSMISSION 2 (RED data)
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this->command(0x13);
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this->start_data_();
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for (int i = 0; i < this->get_buffer_length_(); i++)
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this->write_byte(0xFF);
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this->end_data_();
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delay(2);
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// COMMAND DISPLAY REFRESH
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this->command(0x12);
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this->wait_until_idle_();
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// COMMAND POWER OFF
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// NOTE: power off < deep sleep
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this->command(0x02);
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}
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int WaveshareEPaper4P2InBV2::get_width_internal() { return 400; }
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int WaveshareEPaper4P2InBV2::get_height_internal() { return 300; }
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void WaveshareEPaper4P2InBV2::dump_config() {
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LOG_DISPLAY("", "Waveshare E-Paper", this);
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ESP_LOGCONFIG(TAG, " Model: 4.2in (B V2)");
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LOG_PIN(" Reset Pin: ", this->reset_pin_);
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LOG_PIN(" DC Pin: ", this->dc_pin_);
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LOG_PIN(" Busy Pin: ", this->busy_pin_);
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LOG_UPDATE_INTERVAL(this);
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}
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void WaveshareEPaper5P8In::initialize() {
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// COMMAND POWER SETTING
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this->command(0x01);
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@ -115,6 +115,7 @@ class WaveshareEPaperTypeA : public WaveshareEPaper {
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enum WaveshareEPaperTypeBModel {
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WAVESHARE_EPAPER_2_7_IN = 0,
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WAVESHARE_EPAPER_4_2_IN,
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WAVESHARE_EPAPER_4_2_IN_B_V2,
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WAVESHARE_EPAPER_7_5_IN,
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WAVESHARE_EPAPER_7_5_INV2,
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};
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@ -202,6 +203,34 @@ class WaveshareEPaper4P2In : public WaveshareEPaper {
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int get_height_internal() override;
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};
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class WaveshareEPaper4P2InBV2 : public WaveshareEPaper {
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public:
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void initialize() override;
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void display() override;
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void dump_config() override;
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void deep_sleep() override {
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// COMMAND VCOM AND DATA INTERVAL SETTING
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this->command(0x50);
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this->data(0xF7); // border floating
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// COMMAND POWER OFF
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this->command(0x02);
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this->wait_until_idle_();
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// COMMAND DEEP SLEEP
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this->command(0x07);
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this->data(0xA5); // check code
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}
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protected:
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int get_width_internal() override;
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int get_height_internal() override;
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};
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class WaveshareEPaper5P8In : public WaveshareEPaper {
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public:
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void initialize() override;
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