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Added Waveshare e-paper display model "7.50inv2p" to the waveshare_epaper component.

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It supports partial refresh and fast refresh (indicated by the "p" in the end) and is suitable for "7.50inv2" models manufactured after September 2023. These displays support both mentioned features (see: https://www.waveshare.com/wiki/7.5inch_e-Paper_HAT_Manual).
For displays manufactured before September 2023, one of the other two models "7.50inv2" or "7.50inv2alt" needs to be used.

The implementation is based on the code of the "7.50inv2" model, the code of other display models which support partial updates and the official example code provided by Waveshare.
This commit is contained in:
Tim Pehla 2024-11-11 17:06:46 +01:00
parent a2dccc4730
commit ec4d5f1183
3 changed files with 248 additions and 0 deletions
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4
esphome/components/waveshare_epaper/display.py
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@ -82,6 +82,9 @@ WaveshareEPaper7P5InV2 = waveshare_epaper_ns.class_(
WaveshareEPaper7P5InV2alt = waveshare_epaper_ns.class_(
"WaveshareEPaper7P5InV2alt", WaveshareEPaper
)
WaveshareEPaper7P5InV2P = waveshare_epaper_ns.class_(
"WaveshareEPaper7P5InV2P", WaveshareEPaper
)
WaveshareEPaper7P5InHDB = waveshare_epaper_ns.class_(
"WaveshareEPaper7P5InHDB", WaveshareEPaper
)
@ -132,6 +135,7 @@ MODELS = {
"7.50in-bc": ("b", WaveshareEPaper7P5InBC),
"7.50inv2": ("b", WaveshareEPaper7P5InV2),
"7.50inv2alt": ("b", WaveshareEPaper7P5InV2alt),
"7.50inv2p": ("c", WaveshareEPaper7P5InV2P),
"7.50in-hd-b": ("b", WaveshareEPaper7P5InHDB),
"2.13in-ttgo-dke": ("c", WaveshareEPaper2P13InDKE),
"2.13inv3": ("c", WaveshareEPaper2P13InV3),

207
esphome/components/waveshare_epaper/waveshare_epaper.cpp
View File

@ -2635,6 +2635,213 @@ void WaveshareEPaper7P5InV2alt::dump_config() {
LOG_UPDATE_INTERVAL(this);
}
/* 7.50inV2 with partial and fast refresh */
bool WaveshareEPaper7P5InV2P::wait_until_idle_() {
if (this->busy_pin_ == nullptr) {
return true;
}
const uint32_t start = millis();
while (this->busy_pin_->digital_read()) {
this->command(0x71);
if (millis() - start > this->idle_timeout_()) {
ESP_LOGE(TAG, "Timeout while displaying image!");
return false;
}
App.feed_wdt();
delay(10);
}
return true;
}
void WaveshareEPaper7P5InV2P::reset_() {
if (this->reset_pin_ != nullptr) {
this->reset_pin_->digital_write(true);
delay(20);
this->reset_pin_->digital_write(false);
delay(2);
this->reset_pin_->digital_write(true);
delay(20);
}
}
void WaveshareEPaper7P5InV2P::turn_on_display_() {
this->command(0x12);
delay(100);
this->wait_until_idle_();
}
void WaveshareEPaper7P5InV2P::initialize() {
this->reset_();
// COMMAND POWER SETTING
this->command(0x01);
this->data(0x07);
this->data(0x07);
this->data(0x3f);
this->data(0x3f);
// COMMAND BOOSTER SOFT START
this->command(0x06);
this->data(0x17);
this->data(0x17);
this->data(0x28);
this->data(0x17);
// COMMAND POWER DRIVER HAT UP
this->command(0x04);
delay(100);
this->wait_until_idle_();
// COMMAND PANEL SETTING
this->command(0x00);
this->data(0x1F);
// COMMAND RESOLUTION SETTING
this->command(0x61);
this->data(0x03);
this->data(0x20);
this->data(0x01);
this->data(0xE0);
// COMMAND DUAL SPI MM_EN, DUSPI_EN
this->command(0x15);
this->data(0x00);
// COMMAND VCOM AND DATA INTERVAL SETTING
this->command(0x50);
this->data(0x10);
this->data(0x07);
// COMMAND TCON SETTING
this->command(0x60);
this->data(0x22);
// COMMAND ENABLE FAST UPDATE
this->command(0xE0);
this->data(0x02);
this->command(0xE5);
this->data(0x5A);
// COMMAND POWER DRIVER HAT DOWN
this->command(0x02);
}
void HOT WaveshareEPaper7P5InV2P::display() {
uint32_t buf_len = this->get_buffer_length_();
// COMMAND POWER ON
ESP_LOGI(TAG, "Power on the display and hat");
this->command(0x04);
delay(200);
this->wait_until_idle_();
if (this->full_update_every_ == 1) {
this->command(0x13);
for (uint32_t i = 0; i < buf_len; i++) {
this->data(~(this->buffer_[i]));
}
this->turn_on_display_();
this->command(0x02);
this->wait_until_idle_();
return;
}
this->command(0x50);
this->data(0xA9);
this->data(0x07);
if (this->at_update_ == 0) {
// Enable fast refresh
this->command(0xE5);
this->data(0x5A);
this->command(0x92);
this->command(0x10);
delay(2);
for (uint32_t i = 0; i < buf_len; i++) {
this->data(~(this->buffer_[i]));
}
delay(100);
this->wait_until_idle_();
this->command(0x13);
delay(2);
for (uint32_t i = 0; i < buf_len; i++) {
this->data(this->buffer_[i]);
}
delay(100);
this->wait_until_idle_();
this->turn_on_display_();
} else {
// Enable partial refresh
this->command(0xE5);
this->data(0x6E);
// Activate partial refresh and set window bounds
this->command(0x91);
this->command(0x90);
this->data(0x00);
this->data(0x00);
this->data((get_width_internal() - 1) >> 8 & 0xFF);
this->data((get_width_internal() - 1) & 0xFF);
this->data(0x00);
this->data(0x00);
this->data((get_height_internal() - 1) >> 8 & 0xFF);
this->data((get_height_internal() - 1) & 0xFF);
this->data(0x01);
this->command(0x13);
delay(2);
for (uint32_t i = 0; i < buf_len; i++) {
this->data(this->buffer_[i]);
}
delay(100);
this->wait_until_idle_();
this->turn_on_display_();
}
ESP_LOGV(TAG, "Before command(0x02) (>> power off)");
this->command(0x02);
this->wait_until_idle_();
ESP_LOGV(TAG, "After command(0x02) (>> power off)");
this->at_update_ = (this->at_update_ + 1) % this->full_update_every_;
}
int WaveshareEPaper7P5InV2P::get_width_internal() { return 800; }
int WaveshareEPaper7P5InV2P::get_height_internal() { return 480; }
uint32_t WaveshareEPaper7P5InV2P::idle_timeout_() { return 10000; }
void WaveshareEPaper7P5InV2P::dump_config() {
LOG_DISPLAY("", "Waveshare E-Paper", this);
ESP_LOGCONFIG(TAG, " Model: 7.5inV2rev2");
ESP_LOGCONFIG(TAG, " Full Update Every: %" PRIu32, this->full_update_every_);
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);
}
void WaveshareEPaper7P5InV2P::set_full_update_every(uint32_t full_update_every) {
this->full_update_every_ = full_update_every;
}
/* 7.50in-bc */
void WaveshareEPaper7P5InBC::initialize() {
/* The command sequence is similar to the 7P5In display but differs in subtle ways

37
esphome/components/waveshare_epaper/waveshare_epaper.h
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@ -688,6 +688,43 @@ class WaveshareEPaper7P5InV2alt : public WaveshareEPaper7P5InV2 {
};
};
class WaveshareEPaper7P5InV2P : public WaveshareEPaper {
public:
bool wait_until_idle_();
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
}
void set_full_update_every(uint32_t full_update_every);
protected:
int get_width_internal() override;
int get_height_internal() override;
uint32_t idle_timeout_() override;
uint32_t full_update_every_{30};
uint32_t at_update_{0};
private:
void reset_();
void turn_on_display_();
};
class WaveshareEPaper7P5InHDB : public WaveshareEPaper {
public:
void initialize() override;