have fun

components/pca9554_2/pca9554.cpp

@@ -0,0 +1,96 @@
+#include "pca9554.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace pca9554 {
+
+static const char *TAG = "pca9554";
+
+void PCA9554Component::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up PCA9554...");
+  if (!this->read_gpio_()) {
+    ESP_LOGE(TAG, "PCA9554 not available under 0x%02X", this->address_);
+    this->mark_failed();
+    return;
+  }
+
+  this->write_gpio_();
+  this->read_gpio_();
+}
+void PCA9554Component::dump_config() {
+  ESP_LOGCONFIG(TAG, "PCA9554:");
+  LOG_I2C_DEVICE(this)
+  if (this->is_failed()) {
+    ESP_LOGE(TAG, "Communication with PCA9554 failed!");
+  }
+}
+bool PCA9554Component::digital_read(uint8_t pin) {
+  this->read_gpio_();
+  return this->input_mask_ & (1 << pin);
+}
+void PCA9554Component::digital_write(uint8_t pin, bool value) {
+  if (value) {
+    this->output_mask_ |= (1 << pin);
+  } else {
+    this->output_mask_ &= ~(1 << pin);
+  }
+
+  this->write_gpio_();
+}
+void PCA9554Component::pin_mode(uint8_t pin, uint8_t mode) {
+  switch (mode) {
+    case PCA9554_OUTPUT:
+      // Clear mode mask bit
+      this->mode_mask_ &= ~(1 << pin);
+      // Write GPIO to enable input mode
+      this->write_gpio_();
+      break;
+    case PCA9554_INPUT:
+      // Set mode mask bit
+      this->mode_mask_ |= 1 << pin;
+      break;
+    default:
+      break;
+  }
+}
+bool PCA9554Component::read_gpio_() {
+  if (this->is_failed())
+    return false;
+  bool success;
+  uint8_t data[2];
+
+  if (!success) {
+    this->status_set_warning();
+    return false;
+  }
+  this->status_clear_warning();
+  return true;
+}
+bool PCA9554Component::write_gpio_() {
+  if (this->is_failed())
+    return false;
+
+  uint16_t value = 0;
+  // Pins in OUTPUT mode and where pin is HIGH.
+  value |= this->mode_mask_ & this->output_mask_;
+  // Pins in INPUT mode must also be set here
+  value |= ~this->mode_mask_;
+
+  uint8_t data[2];
+  data[0] = value;
+  data[1] = value >> 8;
+
+  this->status_clear_warning();
+  return true;
+}
+float PCA9554Component::get_setup_priority() const { return setup_priority::IO; }
+
+void PCA9554GPIOPin::setup() { this->pin_mode(this->mode_); }
+bool PCA9554GPIOPin::digital_read() { return this->parent_->digital_read(this->pin_) != this->inverted_; }
+void PCA9554GPIOPin::digital_write(bool value) { this->parent_->digital_write(this->pin_, value != this->inverted_); }
+void PCA9554GPIOPin::pin_mode(uint8_t mode) { this->parent_->pin_mode(this->pin_, mode); }
+PCA9554GPIOPin::PCA9554GPIOPin(PCA9554Component *parent, uint8_t pin, uint8_t mode, bool inverted)
+    : GPIOPin(pin, mode, inverted), parent_(parent) {}
+
+}  // namespace pca9554
+}  // namespace esphome