Add sm2135 component (#1736)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

CODEOWNERS

@@ -85,6 +85,7 @@ esphome/components/sgp40/* @SenexCrenshaw
 esphome/components/sht4x/* @sjtrny
 esphome/components/shutdown/* @esphome/core
 esphome/components/sim800l/* @glmnet
+esphome/components/sm2135/* @BoukeHaarsma23
 esphome/components/spi/* @esphome/core
 esphome/components/ssd1322_base/* @kbx81
 esphome/components/ssd1322_spi/* @kbx81

esphome/components/sm2135/__init__.py

@@ -0,0 +1,33 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome import pins
+from esphome.const import (
+    CONF_CLOCK_PIN,
+    CONF_DATA_PIN,
+    CONF_ID,
+)
+
+AUTO_LOAD = ["output"]
+CODEOWNERS = ["@BoukeHaarsma23"]
+
+sm2135_ns = cg.esphome_ns.namespace("sm2135")
+SM2135 = sm2135_ns.class_("SM2135", cg.Component)
+
+MULTI_CONF = True
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(SM2135),
+        cv.Required(CONF_DATA_PIN): pins.gpio_output_pin_schema,
+        cv.Required(CONF_CLOCK_PIN): pins.gpio_output_pin_schema,
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+
+    data = yield cg.gpio_pin_expression(config[CONF_DATA_PIN])
+    cg.add(var.set_data_pin(data))
+    clock = yield cg.gpio_pin_expression(config[CONF_CLOCK_PIN])
+    cg.add(var.set_clock_pin(clock))

esphome/components/sm2135/output.py

@@ -0,0 +1,28 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import output
+from esphome.const import CONF_CHANNEL, CONF_ID
+from . import SM2135
+
+DEPENDENCIES = ["sm2135"]
+CODEOWNERS = ["@BoukeHaarsma23"]
+
+Channel = SM2135.class_("Channel", output.FloatOutput)
+
+CONF_SM2135_ID = "sm2135_id"
+CONFIG_SCHEMA = output.FLOAT_OUTPUT_SCHEMA.extend(
+    {
+        cv.GenerateID(CONF_SM2135_ID): cv.use_id(SM2135),
+        cv.Required(CONF_ID): cv.declare_id(Channel),
+        cv.Required(CONF_CHANNEL): cv.int_range(min=0, max=65535),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield output.register_output(var, config)
+
+    parent = yield cg.get_variable(config[CONF_SM2135_ID])
+    cg.add(var.set_parent(parent))
+    cg.add(var.set_channel(config[CONF_CHANNEL]))

esphome/components/sm2135/sm2135.cpp

@@ -0,0 +1,81 @@
+#include "sm2135.h"
+#include "esphome/core/log.h"
+
+// Tnx to the work of https://github.com/arendst (Tasmota) for making the initial version of the driver
+
+namespace esphome {
+namespace sm2135 {
+
+static const char *TAG = "sm2135";
+
+static const uint8_t SM2135_ADDR_MC = 0xC0;  // Max current register
+static const uint8_t SM2135_ADDR_CH = 0xC1;  // RGB or CW channel select register
+static const uint8_t SM2135_ADDR_R = 0xC2;   // Red color
+static const uint8_t SM2135_ADDR_G = 0xC3;   // Green color
+static const uint8_t SM2135_ADDR_B = 0xC4;   // Blue color
+static const uint8_t SM2135_ADDR_C = 0xC5;   // Cold
+static const uint8_t SM2135_ADDR_W = 0xC6;   // Warm
+
+static const uint8_t SM2135_RGB = 0x00;  // RGB channel
+static const uint8_t SM2135_CW = 0x80;   // CW channel (Chip default)
+
+static const uint8_t SM2135_10MA = 0x00;
+static const uint8_t SM2135_15MA = 0x01;
+static const uint8_t SM2135_20MA = 0x02;  // RGB max current (Chip default)
+static const uint8_t SM2135_25MA = 0x03;
+static const uint8_t SM2135_30MA = 0x04;  // CW max current (Chip default)
+static const uint8_t SM2135_35MA = 0x05;
+static const uint8_t SM2135_40MA = 0x06;
+static const uint8_t SM2135_45MA = 0x07;  // Max value for RGB
+static const uint8_t SM2135_50MA = 0x08;
+static const uint8_t SM2135_55MA = 0x09;
+static const uint8_t SM2135_60MA = 0x0A;
+
+static const uint8_t SM2135_CURRENT = (SM2135_20MA << 4) | SM2135_10MA;
+
+void SM2135::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up SM2135OutputComponent...");
+  this->data_pin_->setup();
+  this->data_pin_->digital_write(true);
+  this->clock_pin_->setup();
+  this->clock_pin_->digital_write(true);
+  this->pwm_amounts_.resize(5, 0);
+}
+void SM2135::dump_config() {
+  ESP_LOGCONFIG(TAG, "SM2135:");
+  LOG_PIN("  Data Pin: ", this->data_pin_);
+  LOG_PIN("  Clock Pin: ", this->clock_pin_);
+}
+
+void SM2135::loop() {
+  if (!this->update_)
+    return;
+
+  uint8_t data[6];
+  if (this->update_channel_ == 3 || this->update_channel_ == 4) {
+    // No color so must be Cold/Warm
+    data[0] = SM2135_ADDR_MC;
+    data[1] = SM2135_CURRENT;
+    data[2] = SM2135_CW;
+    this->write_buffer_(data, 3);
+    delay(1);
+    data[0] = SM2135_ADDR_C;
+    data[1] = this->pwm_amounts_[4];  // Warm
+    data[2] = this->pwm_amounts_[3];  // Cold
+    this->write_buffer_(data, 3);
+  } else {
+    // Color
+    data[0] = SM2135_ADDR_MC;
+    data[1] = SM2135_CURRENT;
+    data[2] = SM2135_RGB;
+    data[3] = this->pwm_amounts_[1];  // Green
+    data[4] = this->pwm_amounts_[0];  // Red
+    data[5] = this->pwm_amounts_[2];  // Blue
+    this->write_buffer_(data, 6);
+  }
+
+  this->update_ = false;
+}
+
+}  // namespace sm2135
+}  // namespace esphome

esphome/components/sm2135/sm2135.h

@@ -0,0 +1,82 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/esphal.h"
+#include "esphome/components/output/float_output.h"
+
+namespace esphome {
+namespace sm2135 {
+
+class SM2135 : public Component {
+ public:
+  class Channel;
+
+  void set_data_pin(GPIOPin *data_pin) { data_pin_ = data_pin; }
+  void set_clock_pin(GPIOPin *clock_pin) { clock_pin_ = clock_pin; }
+
+  void setup() override;
+
+  void dump_config() override;
+
+  float get_setup_priority() const override { return setup_priority::HARDWARE; }
+
+  /// Send new values if they were updated.
+  void loop() override;
+
+  class Channel : public output::FloatOutput {
+   public:
+    void set_parent(SM2135 *parent) { parent_ = parent; }
+    void set_channel(uint8_t channel) { channel_ = channel; }
+
+   protected:
+    void write_state(float state) override {
+      auto amount = static_cast<uint8_t>(state * 0xff);
+      this->parent_->set_channel_value_(this->channel_, amount);
+    }
+
+    SM2135 *parent_;
+    uint8_t channel_;
+  };
+
+ protected:
+  void set_channel_value_(uint8_t channel, uint8_t value) {
+    if (this->pwm_amounts_[channel] != value) {
+      this->update_ = true;
+      this->update_channel_ = channel;
+    }
+    this->pwm_amounts_[channel] = value;
+  }
+  void write_bit_(bool value) {
+    this->clock_pin_->digital_write(false);
+    this->data_pin_->digital_write(value);
+    this->clock_pin_->digital_write(true);
+  }
+
+  void write_byte_(uint8_t data) {
+    for (uint8_t mask = 0x80; mask; mask >>= 1) {
+      this->write_bit_(data & mask);
+    }
+    this->clock_pin_->digital_write(false);
+    this->data_pin_->digital_write(true);
+    this->clock_pin_->digital_write(true);
+  }
+
+  void write_buffer_(uint8_t *buffer, uint8_t size) {
+    this->data_pin_->digital_write(false);
+    for (uint32_t i = 0; i < size; i++) {
+      this->write_byte_(buffer[i]);
+    }
+    this->clock_pin_->digital_write(false);
+    this->clock_pin_->digital_write(true);
+    this->data_pin_->digital_write(true);
+  }
+
+  GPIOPin *data_pin_;
+  GPIOPin *clock_pin_;
+  uint8_t update_channel_;
+  std::vector<uint8_t> pwm_amounts_;
+  bool update_{true};
+};
+
+}  // namespace sm2135
+}  // namespace esphome

tests/test3.yaml

@@ -586,6 +586,10 @@ script:
     then:
       - lambda: 'ESP_LOGD("main", "Hello World!");'
 
+sm2135:
+  data_pin: GPIO12
+  clock_pin: GPIO14
+
 switch:
   - platform: template
     name: 'mpr121_toggle'
@@ -828,6 +832,21 @@ output:
     pin: GPIO5
     id: my_slow_pwm
     period: 15s
+  - platform: sm2135
+    id: sm2135_0
+    channel: 0
+  - platform: sm2135
+    id: sm2135_1
+    channel: 1
+  - platform: sm2135
+    id: sm2135_2
+    channel: 2
+  - platform: sm2135
+    id: sm2135_3
+    channel: 3
+  - platform: sm2135
+    id: sm2135_4
+    channel: 4
 
 mcp23017:
   id: mcp23017_hub