SM16716 support (#541)

esphome/components/sm16716/sm16716.cpp

@@ -0,0 +1,52 @@
+#include "sm16716.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace sm16716 {
+
+static const char *TAG = "sm16716";
+
+void SM16716::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up SM16716OutputComponent...");
+  this->data_pin_->setup();
+  this->data_pin_->digital_write(false);
+  this->clock_pin_->setup();
+  this->clock_pin_->digital_write(false);
+  this->pwm_amounts_.resize(this->num_channels_, 0);
+}
+void SM16716::dump_config() {
+  ESP_LOGCONFIG(TAG, "SM16716:");
+  LOG_PIN("  Data Pin: ", this->data_pin_);
+  LOG_PIN("  Clock Pin: ", this->clock_pin_);
+  ESP_LOGCONFIG(TAG, "  Total number of channels: %u", this->num_channels_);
+  ESP_LOGCONFIG(TAG, "  Number of chips: %u", this->num_chips_);
+}
+void SM16716::loop() {
+  if (!this->update_)
+    return;
+
+  for (uint8_t i = 0; i < 50; i++) {
+    this->write_bit_(false);
+  }
+
+  // send 25 bits (1 start bit plus 24 data bits) for each chip
+  for (uint8_t index = 0; index < this->num_channels_; index++) {
+    // send a start bit initially and after every 3 channels
+    if (index % 3 == 0) {
+      this->write_bit_(true);
+    }
+
+    this->write_byte_(this->pwm_amounts_[index]);
+  }
+
+  // send a blank 25 bits to signal the end
+  this->write_bit_(false);
+  this->write_byte_(0);
+  this->write_byte_(0);
+  this->write_byte_(0);
+
+  this->update_ = false;
+}
+
+}  // namespace sm16716
+}  // namespace esphome