mirror of
https://github.com/randybb/esphome-configs.git
synced 2026-01-02 19:47:29 +01:00
97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
#include "pca9554.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace pca9554 {
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static const char *TAG = "pca9554";
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void PCA9554Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up PCA9554...");
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if (!this->read_gpio_()) {
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ESP_LOGE(TAG, "PCA9554 not available under 0x%02X", this->address_);
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this->mark_failed();
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return;
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}
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this->write_gpio_();
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this->read_gpio_();
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}
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void PCA9554Component::dump_config() {
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ESP_LOGCONFIG(TAG, "PCA9554:");
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LOG_I2C_DEVICE(this)
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if (this->is_failed()) {
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ESP_LOGE(TAG, "Communication with PCA9554 failed!");
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}
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}
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bool PCA9554Component::digital_read(uint8_t pin) {
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this->read_gpio_();
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return this->input_mask_ & (1 << pin);
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}
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void PCA9554Component::digital_write(uint8_t pin, bool value) {
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if (value) {
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this->output_mask_ |= (1 << pin);
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} else {
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this->output_mask_ &= ~(1 << pin);
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}
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this->write_gpio_();
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}
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void PCA9554Component::pin_mode(uint8_t pin, uint8_t mode) {
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switch (mode) {
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case PCA9554_OUTPUT:
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// Clear mode mask bit
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this->mode_mask_ &= ~(1 << pin);
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// Write GPIO to enable input mode
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this->write_gpio_();
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break;
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case PCA9554_INPUT:
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// Set mode mask bit
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this->mode_mask_ |= 1 << pin;
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break;
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default:
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break;
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}
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}
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bool PCA9554Component::read_gpio_() {
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if (this->is_failed())
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return false;
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bool success;
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uint8_t data[2];
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if (!success) {
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this->status_set_warning();
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return false;
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}
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this->status_clear_warning();
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return true;
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}
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bool PCA9554Component::write_gpio_() {
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if (this->is_failed())
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return false;
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uint16_t value = 0;
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// Pins in OUTPUT mode and where pin is HIGH.
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value |= this->mode_mask_ & this->output_mask_;
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// Pins in INPUT mode must also be set here
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value |= ~this->mode_mask_;
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uint8_t data[2];
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data[0] = value;
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data[1] = value >> 8;
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this->status_clear_warning();
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return true;
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}
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float PCA9554Component::get_setup_priority() const { return setup_priority::IO; }
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void PCA9554GPIOPin::setup() { this->pin_mode(this->mode_); }
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bool PCA9554GPIOPin::digital_read() { return this->parent_->digital_read(this->pin_) != this->inverted_; }
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void PCA9554GPIOPin::digital_write(bool value) { this->parent_->digital_write(this->pin_, value != this->inverted_); }
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void PCA9554GPIOPin::pin_mode(uint8_t mode) { this->parent_->pin_mode(this->pin_, mode); }
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PCA9554GPIOPin::PCA9554GPIOPin(PCA9554Component *parent, uint8_t pin, uint8_t mode, bool inverted)
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: GPIOPin(pin, mode, inverted), parent_(parent) {}
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} // namespace pca9554
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} // namespace esphome
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