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Add SSD1325 Display Component (#736)

Browse source 
* add ssd1325 component

* fix i2c

* remove ssd1325 i2c

* add test

* set max contrast

* No macros - see styleguide

* Remove invalid function

* Formatting


Co-authored-by: Otto Winter <otto@otto-winter.com>
This commit is contained in:
Evan Coleman 2019-10-19 14:44:43 -04:00 committed by Otto Winter
parent 0759140dc2
commit 4bee316425
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GPG key ID: DB66C0BE6013F97E
8 changed files with 395 additions and 0 deletions
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42
esphome/components/ssd1325_base/__init__.py Normal file
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import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import pins
from esphome.components import display
from esphome.const import CONF_EXTERNAL_VCC, CONF_LAMBDA, CONF_MODEL, CONF_RESET_PIN
from esphome.core import coroutine
ssd1325_base_ns = cg.esphome_ns.namespace('ssd1325_base')
SSD1325 = ssd1325_base_ns.class_('SSD1325', cg.PollingComponent, display.DisplayBuffer)
SSD1325Model = ssd1325_base_ns.enum('SSD1325Model')
MODELS = {
'SSD1325_128X32': SSD1325Model.SSD1325_MODEL_128_32,
'SSD1325_128X64': SSD1325Model.SSD1325_MODEL_128_64,
'SSD1325_96X16': SSD1325Model.SSD1325_MODEL_96_16,
'SSD1325_64X48': SSD1325Model.SSD1325_MODEL_64_48,
}
SSD1325_MODEL = cv.enum(MODELS, upper=True, space="_")
SSD1325_SCHEMA = display.FULL_DISPLAY_SCHEMA.extend({
cv.Required(CONF_MODEL): SSD1325_MODEL,
cv.Optional(CONF_RESET_PIN): pins.gpio_output_pin_schema,
cv.Optional(CONF_EXTERNAL_VCC): cv.boolean,
}).extend(cv.polling_component_schema('1s'))
@coroutine
def setup_ssd1036(var, config):
yield cg.register_component(var, config)
yield display.register_display(var, config)
cg.add(var.set_model(config[CONF_MODEL]))
if CONF_RESET_PIN in config:
reset = yield cg.gpio_pin_expression(config[CONF_RESET_PIN])
cg.add(var.set_reset_pin(reset))
if CONF_EXTERNAL_VCC in config:
cg.add(var.set_external_vcc(config[CONF_EXTERNAL_VCC]))
if CONF_LAMBDA in config:
lambda_ = yield cg.process_lambda(
config[CONF_LAMBDA], [(display.DisplayBufferRef, 'it')], return_type=cg.void)
cg.add(var.set_writer(lambda_))

177
esphome/components/ssd1325_base/ssd1325_base.cpp Normal file
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#include "ssd1325_base.h"
#include "esphome/core/log.h"
#include "esphome/core/helpers.h"
namespace esphome {
namespace ssd1325_base {
static const char *TAG = "ssd1325";
static const uint8_t BLACK = 0;
static const uint8_t WHITE = 1;
static const uint8_t SSD1325_SETCOLADDR = 0x15;
static const uint8_t SSD1325_SETROWADDR = 0x75;
static const uint8_t SSD1325_SETCONTRAST = 0x81;
static const uint8_t SSD1325_SETCURRENT = 0x84;
static const uint8_t SSD1325_SETREMAP = 0xA0;
static const uint8_t SSD1325_SETSTARTLINE = 0xA1;
static const uint8_t SSD1325_SETOFFSET = 0xA2;
static const uint8_t SSD1325_NORMALDISPLAY = 0xA4;
static const uint8_t SSD1325_DISPLAYALLON = 0xA5;
static const uint8_t SSD1325_DISPLAYALLOFF = 0xA6;
static const uint8_t SSD1325_INVERTDISPLAY = 0xA7;
static const uint8_t SSD1325_SETMULTIPLEX = 0xA8;
static const uint8_t SSD1325_MASTERCONFIG = 0xAD;
static const uint8_t SSD1325_DISPLAYOFF = 0xAE;
static const uint8_t SSD1325_DISPLAYON = 0xAF;
static const uint8_t SSD1325_SETPRECHARGECOMPENABLE = 0xB0;
static const uint8_t SSD1325_SETPHASELEN = 0xB1;
static const uint8_t SSD1325_SETROWPERIOD = 0xB2;
static const uint8_t SSD1325_SETCLOCK = 0xB3;
static const uint8_t SSD1325_SETPRECHARGECOMP = 0xB4;
static const uint8_t SSD1325_SETGRAYTABLE = 0xB8;
static const uint8_t SSD1325_SETPRECHARGEVOLTAGE = 0xBC;
static const uint8_t SSD1325_SETVCOMLEVEL = 0xBE;
static const uint8_t SSD1325_SETVSL = 0xBF;
static const uint8_t SSD1325_GFXACCEL = 0x23;
static const uint8_t SSD1325_DRAWRECT = 0x24;
static const uint8_t SSD1325_COPY = 0x25;
void SSD1325::setup() {
this->init_internal_(this->get_buffer_length_());
this->command(SSD1325_DISPLAYOFF); /* display off */
this->command(SSD1325_SETCLOCK); /* set osc division */
this->command(0xF1); /* 145 */
this->command(SSD1325_SETMULTIPLEX); /* multiplex ratio */
this->command(0x3f); /* duty = 1/64 */
this->command(SSD1325_SETOFFSET); /* set display offset --- */
this->command(0x4C); /* 76 */
this->command(SSD1325_SETSTARTLINE); /*set start line */
this->command(0x00); /* ------ */
this->command(SSD1325_MASTERCONFIG); /*Set Master Config DC/DC Converter*/
this->command(0x02);
this->command(SSD1325_SETREMAP); /* set segment remap------ */
this->command(0x56);
this->command(SSD1325_SETCURRENT + 0x2); /* Set Full Current Range */
this->command(SSD1325_SETGRAYTABLE);
this->command(0x01);
this->command(0x11);
this->command(0x22);
this->command(0x32);
this->command(0x43);
this->command(0x54);
this->command(0x65);
this->command(0x76);
this->command(SSD1325_SETCONTRAST); /* set contrast current */
this->command(0x7F); // max!
this->command(SSD1325_SETROWPERIOD);
this->command(0x51);
this->command(SSD1325_SETPHASELEN);
this->command(0x55);
this->command(SSD1325_SETPRECHARGECOMP);
this->command(0x02);
this->command(SSD1325_SETPRECHARGECOMPENABLE);
this->command(0x28);
this->command(SSD1325_SETVCOMLEVEL); // Set High Voltage Level of COM Pin
this->command(0x1C); //?
this->command(SSD1325_SETVSL); // set Low Voltage Level of SEG Pin
this->command(0x0D | 0x02);
this->command(SSD1325_NORMALDISPLAY); /* set display mode */
this->command(SSD1325_DISPLAYON); /* display ON */
}
void SSD1325::display() {
this->command(SSD1325_SETCOLADDR); /* set column address */
this->command(0x00); /* set column start address */
this->command(0x3F); /* set column end address */
this->command(SSD1325_SETROWADDR); /* set row address */
this->command(0x00); /* set row start address */
this->command(0x3F); /* set row end address */
this->write_display_data();
}
void SSD1325::update() {
this->do_update_();
this->display();
}
int SSD1325::get_height_internal() {
switch (this->model_) {
case SSD1325_MODEL_128_32:
return 32;
case SSD1325_MODEL_128_64:
return 64;
case SSD1325_MODEL_96_16:
return 16;
case SSD1325_MODEL_64_48:
return 48;
default:
return 0;
}
}
int SSD1325::get_width_internal() {
switch (this->model_) {
case SSD1325_MODEL_128_32:
case SSD1325_MODEL_128_64:
return 128;
case SSD1325_MODEL_96_16:
return 96;
case SSD1325_MODEL_64_48:
return 64;
default:
return 0;
}
}
size_t SSD1325::get_buffer_length_() {
return size_t(this->get_width_internal()) * size_t(this->get_height_internal()) / 8u;
}
void HOT SSD1325::draw_absolute_pixel_internal(int x, int y, int color) {
if (x >= this->get_width_internal() || x < 0 || y >= this->get_height_internal() || y < 0)
return;
uint16_t pos = x + (y / 8) * this->get_width_internal();
uint8_t subpos = y % 8;
if (color) {
this->buffer_[pos] |= (1 << subpos);
} else {
this->buffer_[pos] &= ~(1 << subpos);
}
}
void SSD1325::fill(int color) {
uint8_t fill = color ? 0xFF : 0x00;
for (uint32_t i = 0; i < this->get_buffer_length_(); i++)
this->buffer_[i] = fill;
}
void SSD1325::init_reset_() {
if (this->reset_pin_ != nullptr) {
this->reset_pin_->setup();
this->reset_pin_->digital_write(true);
delay(1);
// Trigger Reset
this->reset_pin_->digital_write(false);
delay(10);
// Wake up
this->reset_pin_->digital_write(true);
}
}
const char *SSD1325::model_str_() {
switch (this->model_) {
case SSD1325_MODEL_128_32:
return "SSD1325 128x32";
case SSD1325_MODEL_128_64:
return "SSD1325 128x64";
case SSD1325_MODEL_96_16:
return "SSD1325 96x16";
case SSD1325_MODEL_64_48:
return "SSD1325 64x48";
default:
return "Unknown";
}
}
} // namespace ssd1325_base
} // namespace esphome

50
esphome/components/ssd1325_base/ssd1325_base.h Normal file
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#pragma once
#include "esphome/core/component.h"
#include "esphome/core/esphal.h"
#include "esphome/components/display/display_buffer.h"
namespace esphome {
namespace ssd1325_base {
enum SSD1325Model {
SSD1325_MODEL_128_32 = 0,
SSD1325_MODEL_128_64,
SSD1325_MODEL_96_16,
SSD1325_MODEL_64_48,
};
class SSD1325 : public PollingComponent, public display::DisplayBuffer {
public:
void setup() override;
void display();
void update() override;
void set_model(SSD1325Model model) { this->model_ = model; }
void set_reset_pin(GPIOPin *reset_pin) { this->reset_pin_ = reset_pin; }
void set_external_vcc(bool external_vcc) { this->external_vcc_ = external_vcc; }
float get_setup_priority() const override { return setup_priority::PROCESSOR; }
void fill(int color) override;
protected:
virtual void command(uint8_t value) = 0;
virtual void write_display_data() = 0;
void init_reset_();
void draw_absolute_pixel_internal(int x, int y, int color) override;
int get_height_internal() override;
int get_width_internal() override;
size_t get_buffer_length_();
const char *model_str_();
SSD1325Model model_{SSD1325_MODEL_128_64};
GPIOPin *reset_pin_{nullptr};
bool external_vcc_{false};
};
} // namespace ssd1325_base
} // namespace esphome

0
esphome/components/ssd1325_spi/__init__.py Normal file
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26
esphome/components/ssd1325_spi/display.py Normal file
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import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import pins
from esphome.components import spi, ssd1325_base
from esphome.const import CONF_DC_PIN, CONF_ID, CONF_LAMBDA, CONF_PAGES
AUTO_LOAD = ['ssd1325_base']
DEPENDENCIES = ['spi']
ssd1325_spi = cg.esphome_ns.namespace('ssd1325_spi')
SPISSD1325 = ssd1325_spi.class_('SPISSD1325', ssd1325_base.SSD1325, spi.SPIDevice)
CONFIG_SCHEMA = cv.All(ssd1325_base.SSD1325_SCHEMA.extend({
cv.GenerateID(): cv.declare_id(SPISSD1325),
cv.Required(CONF_DC_PIN): pins.gpio_output_pin_schema,
}).extend(cv.COMPONENT_SCHEMA).extend(spi.SPI_DEVICE_SCHEMA),
cv.has_at_most_one_key(CONF_PAGES, CONF_LAMBDA))
def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
yield ssd1325_base.setup_ssd1036(var, config)
yield spi.register_spi_device(var, config)
dc = yield cg.gpio_pin_expression(config[CONF_DC_PIN])
cg.add(var.set_dc_pin(dc))

64
esphome/components/ssd1325_spi/ssd1325_spi.cpp Normal file
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#include "ssd1325_spi.h"
#include "esphome/core/log.h"
#include "esphome/core/application.h"
namespace esphome {
namespace ssd1325_spi {
static const char *TAG = "ssd1325_spi";
void SPISSD1325::setup() {
ESP_LOGCONFIG(TAG, "Setting up SPI SSD1325...");
this->spi_setup();
this->dc_pin_->setup(); // OUTPUT
this->cs_->setup(); // OUTPUT
this->init_reset_();
delay(500);
SSD1325::setup();
}
void SPISSD1325::dump_config() {
LOG_DISPLAY("", "SPI SSD1325", this);
ESP_LOGCONFIG(TAG, " Model: %s", this->model_str_());
LOG_PIN(" CS Pin: ", this->cs_);
LOG_PIN(" DC Pin: ", this->dc_pin_);
LOG_PIN(" Reset Pin: ", this->reset_pin_);
ESP_LOGCONFIG(TAG, " External VCC: %s", YESNO(this->external_vcc_));
LOG_UPDATE_INTERVAL(this);
}
void SPISSD1325::command(uint8_t value) {
this->cs_->digital_write(true);
this->dc_pin_->digital_write(false);
delay(1);
this->enable();
this->cs_->digital_write(false);
this->write_byte(value);
this->cs_->digital_write(true);
this->disable();
}
void HOT SPISSD1325::write_display_data() {
this->cs_->digital_write(true);
this->dc_pin_->digital_write(true);
this->cs_->digital_write(false);
delay(1);
this->enable();
for (uint16_t x = 0; x < this->get_width_internal(); x += 2) {
for (uint16_t y = 0; y < this->get_height_internal(); y += 8) { // we write 8 pixels at once
uint8_t left8 = this->buffer_[y * 16 + x];
uint8_t right8 = this->buffer_[y * 16 + x + 1];
for (uint8_t p = 0; p < 8; p++) {
uint8_t d = 0;
if (left8 & (1 << p))
d |= 0xF0;
if (right8 & (1 << p))
d |= 0x0F;
this->write_byte(d);
}
}
}
this->cs_->digital_write(true);
this->disable();
}
} // namespace ssd1325_spi
} // namespace esphome

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esphome/components/ssd1325_spi/ssd1325_spi.h Normal file
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#pragma once
#include "esphome/core/component.h"
#include "esphome/components/ssd1325_base/ssd1325_base.h"
#include "esphome/components/spi/spi.h"
namespace esphome {
namespace ssd1325_spi {
class SPISSD1325 : public ssd1325_base::SSD1325,
public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH, spi::CLOCK_PHASE_TRAILING,
spi::DATA_RATE_8MHZ> {
public:
void set_dc_pin(GPIOPin *dc_pin) { dc_pin_ = dc_pin; }
void setup() override;
void dump_config() override;
protected:
void command(uint8_t value) override;
void write_display_data() override;
GPIOPin *dc_pin_;
};
} // namespace ssd1325_spi
} // namespace esphome

7
tests/test1.yaml
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reset_pin: GPIO23
lambda: |-
it.rectangle(0, 0, it.get_width(), it.get_height());
- platform: ssd1325_spi
model: "SSD1325 128x64"
cs_pin: GPIO23
dc_pin: GPIO23
reset_pin: GPIO23
lambda: |-
it.rectangle(0, 0, it.get_width(), it.get_height());
- platform: waveshare_epaper
cs_pin: GPIO23
dc_pin: GPIO23