From 9fa057eae80f77f0f52d061ae39a0137749b7bf4 Mon Sep 17 00:00:00 2001
From: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Date: Mon, 13 Jun 2022 10:31:48 +1200
Subject: [PATCH] Create basic ES8388 DAC amplifier component

---
 esphome/components/es8388/__init__.py         | 30 ++++++++++
 .../components/es8388/es8388_component.cpp    | 55 +++++++++++++++++++
 esphome/components/es8388/es8388_component.h  | 20 +++++++
 3 files changed, 105 insertions(+)
 create mode 100644 esphome/components/es8388/__init__.py
 create mode 100644 esphome/components/es8388/es8388_component.cpp
 create mode 100644 esphome/components/es8388/es8388_component.h

diff --git a/esphome/components/es8388/__init__.py b/esphome/components/es8388/__init__.py
new file mode 100644
index 0000000000..56113e980f
--- /dev/null
+++ b/esphome/components/es8388/__init__.py
@@ -0,0 +1,30 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+
+from esphome.components import i2c
+from esphome.const import CONF_ID
+from esphome import pins
+
+es8388_ns = cg.esphome_ns.namespace("es8388")
+ES8388Component = es8388_ns.class_("ES8388Component", cg.Component, i2c.I2CDevice)
+
+CONF_POWER_PIN = "power_pin"
+
+CONFIG_SCHEMA = (
+    cv.Schema(
+        {
+            cv.GenerateID(): cv.declare_id(ES8388Component),
+            cv.Required(CONF_POWER_PIN): pins.gpio_output_pin_schema,
+        }
+    )
+    .extend(i2c.i2c_device_schema(0x10))
+    .extend(cv.COMPONENT_SCHEMA)
+)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
+    await i2c.register_i2c_device(var, config)
+    pin = await cg.gpio_pin_expression(config[CONF_POWER_PIN])
+    cg.add(var.set_power_pin(pin))
diff --git a/esphome/components/es8388/es8388_component.cpp b/esphome/components/es8388/es8388_component.cpp
new file mode 100644
index 0000000000..41e9bed566
--- /dev/null
+++ b/esphome/components/es8388/es8388_component.cpp
@@ -0,0 +1,55 @@
+#include "es8388_component.h"
+
+namespace esphome {
+namespace es8388 {
+
+void ES8388Component::setup() {
+  this->power_pin_->setup();
+  this->power_pin_->digital_write(false);
+
+  // reset
+  this->write_bytes(0x00, {0x80}, 1);
+  this->write_bytes(0x00, {0x00}, 1);
+  // mute
+  this->write_bytes(0x19, {0x04}, 1);
+  this->write_bytes(0x01, {0x50}, 1);
+  // powerup
+  this->write_bytes(0x02, {0x00}, 1);
+  // slave mode
+  this->write_bytes(0x08, {0x00}, 1);
+  // DAC powerdown
+  this->write_bytes(0x04, {0xC0}, 1);
+  // vmidsel/500k ADC/DAC idem
+  this->write_bytes(0x00, {0x12}, 1);
+
+  this->write_bytes(0x01, {0x00}, 1);
+  // i2s 16 bits
+  this->write_bytes(0x17, {0x18}, 1);
+  // sample freq 256
+  this->write_bytes(0x18, {0x02}, 1);
+  // LIN2/RIN2 for mixer
+  this->write_bytes(0x26, {0x09}, 1);
+  // left DAC to left mixer
+  this->write_bytes(0x27, {0x90}, 1);
+  // right DAC to right mixer
+  this->write_bytes(0x2A, {0x90}, 1);
+  // DACLRC ADCLRC idem
+  this->write_bytes(0x2B, {0x80}, 1);
+  this->write_bytes(0x2D, {0x00}, 1);
+  // DAC volume max
+  this->write_bytes(0x1B, {0x00}, 1);
+  this->write_bytes(0x1A, {0x00}, 1);
+
+  this->write_bytes(0x02, {0xF0}, 1);
+  this->write_bytes(0x02, {0x00}, 1);
+  this->write_bytes(0x1D, {0x1C}, 1);
+  // DAC power-up LOUT1/ROUT1 enabled
+  this->write_bytes(0x04, {0x30}, 1);
+  // unmute
+  this->write_bytes(0x19, {0x00}, 1);
+
+  // Turn on amplifier
+  this->power_pin_->digital_write(true);
+}
+}  // namespace es8388
+}  // namespace esphome
diff --git a/esphome/components/es8388/es8388_component.h b/esphome/components/es8388/es8388_component.h
new file mode 100644
index 0000000000..aa185dc00f
--- /dev/null
+++ b/esphome/components/es8388/es8388_component.h
@@ -0,0 +1,20 @@
+#pragma once
+
+#include "esphome/components/i2c/i2c.h"
+#include "esphome/core/component.h"
+#include "esphome/core/gpio.h"
+
+namespace esphome {
+namespace es8388 {
+
+class ES8388Component : public Component, public i2c::I2CDevice {
+ public:
+  void setup() override;
+  void set_power_pin(GPIOPin *pin) { this->power_pin_ = pin; }
+
+ protected:
+  GPIOPin *power_pin_;
+};
+
+}  // namespace es8388
+}  // namespace esphome