Add SSD1325 Display Component (#736)

* 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>

esphome/components/ssd1325_base/__init__.py

@@ -0,0 +1,42 @@
+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_))

esphome/components/ssd1325_base/ssd1325_base.cpp

@@ -0,0 +1,177 @@
+#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

esphome/components/ssd1325_base/ssd1325_base.h

@@ -0,0 +1,50 @@
+#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

esphome/components/ssd1325_spi/display.py

@@ -0,0 +1,26 @@
+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))

esphome/components/ssd1325_spi/ssd1325_spi.cpp

@@ -0,0 +1,64 @@
+#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

esphome/components/ssd1325_spi/ssd1325_spi.h

@@ -0,0 +1,29 @@
+#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