Add support for SM2235 and SM2335 LED drivers (#3924)

esphome/components/sm10bit_base/__init__.py

@@ -0,0 +1,44 @@
+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,
+)
+
+CODEOWNERS = ["@Cossid"]
+MULTI_CONF = True
+
+CONF_MAX_POWER_COLOR_CHANNELS = "max_power_color_channels"
+CONF_MAX_POWER_WHITE_CHANNELS = "max_power_white_channels"
+
+sm10bit_base_ns = cg.esphome_ns.namespace("sm10bit_base")
+Sm10BitBase = sm10bit_base_ns.class_("Sm10BitBase", cg.Component)
+
+SM10BIT_BASE_CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.Required(CONF_DATA_PIN): pins.gpio_output_pin_schema,
+        cv.Required(CONF_CLOCK_PIN): pins.gpio_output_pin_schema,
+        cv.Optional(CONF_MAX_POWER_COLOR_CHANNELS, default=2): cv.int_range(
+            min=0, max=15
+        ),
+        cv.Optional(CONF_MAX_POWER_WHITE_CHANNELS, default=4): cv.int_range(
+            min=0, max=15
+        ),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def register_sm10bit_base(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
+
+    data = await cg.gpio_pin_expression(config[CONF_DATA_PIN])
+    cg.add(var.set_data_pin(data))
+    clock = await cg.gpio_pin_expression(config[CONF_CLOCK_PIN])
+    cg.add(var.set_clock_pin(clock))
+    cg.add(var.set_max_power_color_channels(config[CONF_MAX_POWER_COLOR_CHANNELS]))
+    cg.add(var.set_max_power_white_channels(config[CONF_MAX_POWER_WHITE_CHANNELS]))
+
+    return var

esphome/components/sm10bit_base/sm10bit_base.cpp

@@ -0,0 +1,112 @@
+#include "sm10bit_base.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace sm10bit_base {
+
+static const char *const TAG = "sm10bit_base";
+
+static const uint8_t SM10BIT_ADDR_STANDBY = 0x0;
+static const uint8_t SM10BIT_ADDR_START_3CH = 0x8;
+static const uint8_t SM10BIT_ADDR_START_2CH = 0x10;
+static const uint8_t SM10BIT_ADDR_START_5CH = 0x18;
+
+// Power current values
+// HEX | Binary | RGB level | White level | Config value
+// 0x0 | 0000   | RGB 10mA  | CW 5mA      | 0
+// 0x1 | 0001   | RGB 20mA  | CW 10mA     | 1
+// 0x2 | 0010   | RGB 30mA  | CW 15mA     | 2 - Default spec color value
+// 0x3 | 0011   | RGB 40mA  | CW 20mA     | 3
+// 0x4 | 0100   | RGB 50mA  | CW 25mA     | 4 - Default spec white value
+// 0x5 | 0101   | RGB 60mA  | CW 30mA     | 5
+// 0x6 | 0110   | RGB 70mA  | CW 35mA     | 6
+// 0x7 | 0111   | RGB 80mA  | CW 40mA     | 7
+// 0x8 | 1000   | RGB 90mA  | CW 45mA     | 8
+// 0x9 | 1001   | RGB 100mA | CW 50mA     | 9
+// 0xA | 1010   | RGB 110mA | CW 55mA     | 10
+// 0xB | 1011   | RGB 120mA | CW 60mA     | 11
+// 0xC | 1100   | RGB 130mA | CW 65mA     | 12
+// 0xD | 1101   | RGB 140mA | CW 70mA     | 13
+// 0xE | 1110   | RGB 150mA | CW 75mA     | 14
+// 0xF | 1111   | RGB 160mA | CW 80mA     | 15
+
+void Sm10BitBase::loop() {
+  if (!this->update_)
+    return;
+
+  uint8_t data[12];
+  if (this->pwm_amounts_[0] == 0 && this->pwm_amounts_[1] == 0 && this->pwm_amounts_[2] == 0 &&
+      this->pwm_amounts_[3] == 0 && this->pwm_amounts_[4] == 0) {
+    // Off / Sleep
+    data[0] = this->model_id_ + SM10BIT_ADDR_STANDBY;
+    for (int i = 1; i < 12; i++)
+      data[i] = 0;
+    this->write_buffer_(data, 12);
+  } else if (this->pwm_amounts_[0] == 0 && this->pwm_amounts_[1] == 0 && this->pwm_amounts_[2] == 0 &&
+             (this->pwm_amounts_[3] > 0 || this->pwm_amounts_[4] > 0)) {
+    // Only data on white channels
+    data[0] = this->model_id_ + SM10BIT_ADDR_START_2CH;
+    data[1] = 0 << 4 | this->max_power_white_channels_;
+    for (int i = 2, j = 0; i < 12; i += 2, j++) {
+      data[i] = this->pwm_amounts_[j] >> 0x8;
+      data[i + 1] = this->pwm_amounts_[j] & 0xFF;
+    }
+    this->write_buffer_(data, 12);
+  } else if ((this->pwm_amounts_[0] > 0 || this->pwm_amounts_[1] > 0 || this->pwm_amounts_[2] > 0) &&
+             this->pwm_amounts_[3] == 0 && this->pwm_amounts_[4] == 0) {
+    // Only data on RGB channels
+    data[0] = this->model_id_ + SM10BIT_ADDR_START_3CH;
+    data[1] = this->max_power_color_channels_ << 4 | 0;
+    for (int i = 2, j = 0; i < 12; i += 2, j++) {
+      data[i] = this->pwm_amounts_[j] >> 0x8;
+      data[i + 1] = this->pwm_amounts_[j] & 0xFF;
+    }
+    this->write_buffer_(data, 12);
+  } else {
+    // All channels
+    data[0] = this->model_id_ + SM10BIT_ADDR_START_5CH;
+    data[1] = this->max_power_color_channels_ << 4 | this->max_power_white_channels_;
+    for (int i = 2, j = 0; i < 12; i += 2, j++) {
+      data[i] = this->pwm_amounts_[j] >> 0x8;
+      data[i + 1] = this->pwm_amounts_[j] & 0xFF;
+    }
+    this->write_buffer_(data, 12);
+  }
+
+  this->update_ = false;
+}
+
+void Sm10BitBase::set_channel_value_(uint8_t channel, uint16_t value) {
+  if (this->pwm_amounts_[channel] != value) {
+    this->update_ = true;
+    this->update_channel_ = channel;
+  }
+  this->pwm_amounts_[channel] = value;
+}
+void Sm10BitBase::write_bit_(bool value) {
+  this->clock_pin_->digital_write(false);
+  this->data_pin_->digital_write(value);
+  this->clock_pin_->digital_write(true);
+}
+
+void Sm10BitBase::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 Sm10BitBase::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);
+}
+
+}  // namespace sm10bit_base
+}  // namespace esphome

esphome/components/sm10bit_base/sm10bit_base.h

@@ -0,0 +1,63 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/hal.h"
+#include "esphome/components/output/float_output.h"
+#include <vector>
+
+namespace esphome {
+namespace sm10bit_base {
+
+class Sm10BitBase : public Component {
+ public:
+  class Channel;
+
+  void set_model(uint8_t model_id) { model_id_ = model_id; }
+  void set_data_pin(GPIOPin *data_pin) { data_pin_ = data_pin; }
+  void set_clock_pin(GPIOPin *clock_pin) { clock_pin_ = clock_pin; }
+  void set_max_power_color_channels(uint8_t max_power_color_channels) {
+    max_power_color_channels_ = max_power_color_channels;
+  }
+  void set_max_power_white_channels(uint8_t max_power_white_channels) {
+    max_power_white_channels_ = max_power_white_channels;
+  }
+
+  float get_setup_priority() const override { return setup_priority::HARDWARE; }
+
+  void setup() override;
+  void dump_config() override;
+  void loop() override;
+
+  class Channel : public output::FloatOutput {
+   public:
+    void set_parent(Sm10BitBase *parent) { parent_ = parent; }
+    void set_channel(uint8_t channel) { channel_ = channel; }
+
+   protected:
+    void write_state(float state) override {
+      auto amount = static_cast<uint16_t>(state * 0x3FF);
+      this->parent_->set_channel_value_(this->channel_, amount);
+    }
+
+    Sm10BitBase *parent_;
+    uint8_t channel_;
+  };
+
+ protected:
+  void set_channel_value_(uint8_t channel, uint16_t value);
+  void write_bit_(bool value);
+  void write_byte_(uint8_t data);
+  void write_buffer_(uint8_t *buffer, uint8_t size);
+
+  GPIOPin *data_pin_;
+  GPIOPin *clock_pin_;
+  uint8_t model_id_;
+  uint8_t max_power_color_channels_{2};
+  uint8_t max_power_white_channels_{4};
+  uint8_t update_channel_;
+  std::vector<uint16_t> pwm_amounts_;
+  bool update_{true};
+};
+
+}  // namespace sm10bit_base
+}  // namespace esphome