Home-IoT/esphome
1
0
Fork 0
mirror of https://github.com/esphome/esphome.git synced 2024-12-22 13:34:54 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

Add support for Waveshare 7.5 inch (C) bichromatic display (black-and-white only for now) (#1844)

Browse source 
* Add support for Waveshare 7.5 inch (B) bichromatic display (black-and-white only for now)

* Use drawing commands specific to bichromatic displays

* Fix inaccurate comment

* Fix merge error

* Formatting

Co-authored-by: Oxan van Leeuwen <oxan@oxanvanleeuwen.nl>
This commit is contained in:
Tommy van der Vorst 2021-09-22 12:39:41 +02:00 committed by GitHub
parent f1364d4af4
commit 9fe7b08874
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 123 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
esphome/components/waveshare_epaper/display.py
View file

@ -40,6 +40,9 @@ WaveshareEPaper5P8In = waveshare_epaper_ns.class_(
WaveshareEPaper7P5In = waveshare_epaper_ns.class_(
"WaveshareEPaper7P5In", WaveshareEPaper
)
WaveshareEPaper7P5InBC = waveshare_epaper_ns.class_(
"WaveshareEPaper7P5InBC", WaveshareEPaper
)
WaveshareEPaper7P5InV2 = waveshare_epaper_ns.class_(
"WaveshareEPaper7P5InV2", WaveshareEPaper
)
@ -66,6 +69,7 @@ MODELS = {
"4.20in-bv2": ("b", WaveshareEPaper4P2InBV2),
"5.83in": ("b", WaveshareEPaper5P8In),
"7.50in": ("b", WaveshareEPaper7P5In),
"7.50in-bc": ("b", WaveshareEPaper7P5InBC),
"7.50inv2": ("b", WaveshareEPaper7P5InV2),
"2.13in-ttgo-dke": ("c", WaveshareEPaper2P13InDKE),
}

96
esphome/components/waveshare_epaper/waveshare_epaper.cpp
View file

@ -1081,6 +1081,102 @@ void WaveshareEPaper7P5InV2::dump_config() {
LOG_UPDATE_INTERVAL(this);
}
/* 7.50in-bc */
void WaveshareEPaper7P5InBC::initialize() {
/* The command sequence is similar to the 7P5In display but differs in subtle ways
to allow for faster updates. */
// COMMAND POWER SETTING
this->command(0x01);
this->data(0x37);
this->data(0x00);
// COMMAND PANEL SETTING
this->command(0x00);
this->data(0xCF);
this->data(0x08);
// COMMAND PLL CONTROL
this->command(0x30);
this->data(0x3A);
// COMMAND VCM_DC_SETTING: all temperature range
this->command(0x82);
this->data(0x28);
// COMMAND BOOSTER SOFT START
this->command(0x06);
this->data(0xC7);
this->data(0xCC);
this->data(0x15);
// COMMAND VCOM AND DATA INTERVAL SETTING
this->command(0x50);
this->data(0x77);
// COMMAND TCON SETTING
this->command(0x60);
this->data(0x22);
// COMMAND FLASH CONTROL
this->command(0x65);
this->data(0x00);
// COMMAND RESOLUTION SETTING
this->command(0x61);
this->data(0x02); // 640 >> 8
this->data(0x80);
this->data(0x01); // 384 >> 8
this->data(0x80);
// COMMAND FLASH MODE
this->command(0xE5);
this->data(0x03);
}
void HOT WaveshareEPaper7P5InBC::display() {
// COMMAND DATA START TRANSMISSION 1
this->command(0x10);
this->start_data_();
for (size_t i = 0; i < this->get_buffer_length_(); i++) {
// A line of eight source pixels (each a bit in this byte)
uint8_t eight_pixels = this->buffer_[i];
for (uint8_t j = 0; j < 8; j += 2) {
/* For bichromatic displays, each byte represents two pixels. Each nibble encodes a pixel: 0=white, 3=black,
4=color. Therefore, e.g. 0x44 = two adjacent color pixels, 0x33 is two adjacent black pixels, etc. If you want
to draw using the color pixels, change '0x30' with '0x40' and '0x03' with '0x04' below. */
uint8_t left_nibble = (eight_pixels & 0x80) ? 0x30 : 0x00;
eight_pixels <<= 1;
uint8_t right_nibble = (eight_pixels & 0x80) ? 0x03 : 0x00;
eight_pixels <<= 1;
this->write_byte(left_nibble | right_nibble);
}
App.feed_wdt();
}
this->end_data_();
// Unlike the 7P5In display, we send the "power on" command here rather than during initialization
// COMMAND POWER ON
this->command(0x04);
// COMMAND DISPLAY REFRESH
this->command(0x12);
}
int WaveshareEPaper7P5InBC::get_width_internal() { return 640; }
int WaveshareEPaper7P5InBC::get_height_internal() { return 384; }
void WaveshareEPaper7P5InBC::dump_config() {
LOG_DISPLAY("", "Waveshare E-Paper", this);
ESP_LOGCONFIG(TAG, " Model: 7.5in-bc");
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);
}
static const uint8_t LUT_SIZE_TTGO_DKE_PART = 153;
static const uint8_t PART_UPDATE_LUT_TTGO_DKE[LUT_SIZE_TTGO_DKE_PART] = {

23
esphome/components/waveshare_epaper/waveshare_epaper.h
View file

@ -278,6 +278,29 @@ class WaveshareEPaper7P5In : public WaveshareEPaper {
int get_height_internal() override;
};
class WaveshareEPaper7P5InBC : public WaveshareEPaper {
public:
void initialize() override;
void display() override;
void dump_config() override;
void deep_sleep() override {
// COMMAND POWER OFF
this->command(0x02);
this->wait_until_idle_();
// COMMAND DEEP SLEEP
this->command(0x07);
this->data(0xA5); // check byte
}
protected:
int get_width_internal() override;
int get_height_internal() override;
};
class WaveshareEPaper7P5InV2 : public WaveshareEPaper {
public:
void initialize() override;