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_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