diff --git a/esphome/components/epaper_spi/epaper_waveshare_b.cpp b/esphome/components/epaper_spi/epaper_waveshare_b.cpp new file mode 100644 index 00000000000..6875811b9b3 --- /dev/null +++ b/esphome/components/epaper_spi/epaper_waveshare_b.cpp @@ -0,0 +1,13 @@ +#include "epaper_waveshare_b.h" + +namespace esphome::epaper_spi { + +bool EpaperWaveshareB::reset() { + if (EPaperBase::reset()) { + this->command(0x12); + return true; + } + return false; +} + +} // namespace esphome::epaper_spi diff --git a/esphome/components/epaper_spi/epaper_waveshare_b.h b/esphome/components/epaper_spi/epaper_waveshare_b.h new file mode 100644 index 00000000000..3a391731d8a --- /dev/null +++ b/esphome/components/epaper_spi/epaper_waveshare_b.h @@ -0,0 +1,19 @@ +#pragma once +#include "epaper_weact_3c.h" + +namespace esphome::epaper_spi { + +/** + * Waveshare (B) series BWR e-paper displays using SSD1680-compatible controllers. + * Waveshare uses 0=red, 1=no-red, the inverse of EPaperWeAct3C + */ +class EpaperWaveshareB : public EPaperWeAct3C { + public: + using EPaperWeAct3C::EPaperWeAct3C; + + protected: + bool reset() override; + uint8_t transform_red_byte(uint8_t byte) const override { return static_cast(~byte); } +}; + +} // namespace esphome::epaper_spi diff --git a/esphome/components/epaper_spi/epaper_weact_3c.cpp b/esphome/components/epaper_spi/epaper_weact_3c.cpp index d4dac7076c4..ad2021ed64f 100644 --- a/esphome/components/epaper_spi/epaper_weact_3c.cpp +++ b/esphome/components/epaper_spi/epaper_weact_3c.cpp @@ -144,7 +144,7 @@ bool HOT EPaperWeAct3C::transfer_data() { size_t bytes_to_copy = std::min(MAX_TRANSFER_SIZE, half_buffer - this->current_data_index_); for (size_t i = 0; i < bytes_to_copy; i++) { - bytes_to_send[i] = this->buffer_[red_offset + this->current_data_index_ + i]; + bytes_to_send[i] = this->transform_red_byte(this->buffer_[red_offset + this->current_data_index_ + i]); } this->write_array(bytes_to_send, bytes_to_copy); diff --git a/esphome/components/epaper_spi/epaper_weact_3c.h b/esphome/components/epaper_spi/epaper_weact_3c.h index 2df6f1ba097..a31c2be8176 100644 --- a/esphome/components/epaper_spi/epaper_weact_3c.h +++ b/esphome/components/epaper_spi/epaper_weact_3c.h @@ -34,6 +34,9 @@ class EPaperWeAct3C : public EPaperBase { void draw_pixel_at(int x, int y, Color color) override; bool transfer_data() override; + + // Hook for subclasses to transform red plane bytes before they go on the wire. + virtual uint8_t transform_red_byte(uint8_t byte) const { return byte; } }; } // namespace esphome::epaper_spi diff --git a/esphome/components/epaper_spi/models/waveshare_b.py b/esphome/components/epaper_spi/models/waveshare_b.py new file mode 100644 index 00000000000..688e7164566 --- /dev/null +++ b/esphome/components/epaper_spi/models/waveshare_b.py @@ -0,0 +1,26 @@ +from . import EpaperModel + + +class WaveshareB(EpaperModel): + def __init__(self, name, **defaults): + super().__init__(name, "EpaperWaveshareB", **defaults) + + def get_init_sequence(self, config): + _, height = self.get_dimensions(config) + h = height - 1 + return ( + (0x01, h & 0xFF, h >> 8, 0x00), # Driver output control + (0x11, 0x03), # Data entry mode + (0x3C, 0x05), # Border waveform + (0x18, 0x80), # Internal temperature sensor + (0x21, 0x80, 0x80), # Display update control + ) + + +WaveshareB( + "waveshare-2.13in-bv4", + width=122, + height=250, + data_rate="10MHz", + minimum_update_interval="1s", +) diff --git a/tests/components/epaper_spi/test.esp32-s3-idf.yaml b/tests/components/epaper_spi/test.esp32-s3-idf.yaml index 6d5e276582d..60e4008f4f1 100644 --- a/tests/components/epaper_spi/test.esp32-s3-idf.yaml +++ b/tests/components/epaper_spi/test.esp32-s3-idf.yaml @@ -162,6 +162,27 @@ display: allow_other_uses: true number: GPIO4 + # Waveshare 2.13" V4 B series 3-color e-paper (122x250, BWR, SSD1680) + - platform: epaper_spi + spi_id: spi_bus + model: waveshare-2.13in-bv4 + cs_pin: + allow_other_uses: true + number: GPIO5 + dc_pin: + allow_other_uses: true + number: GPIO17 + reset_pin: + allow_other_uses: true + number: GPIO16 + busy_pin: + allow_other_uses: true + number: GPIO4 + lambda: |- + it.filled_rectangle(0, 0, it.get_width(), it.get_height(), Color::WHITE); + it.circle(it.get_width() / 2, it.get_height() / 2, 20, Color::BLACK); + it.circle(it.get_width() / 2, it.get_height() / 2, 15, Color(255, 0, 0)); + # Soldered Inkplate 2 3-color e-paper (104x212, BWR) - platform: epaper_spi spi_id: spi_bus