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Merge branch 'pca9554_loop_churn_fix' into integration

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This commit is contained in:
J. Nick Koston
2025-09-04 13:05:04 -05:00
parent 75de980f58 cf9c8e3786
commit c36dc5c4ad
3 changed files with 21 additions and 17 deletions
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1
esphome/components/pca9554/__init__.py
View File

@@ -12,6 +12,7 @@ from esphome.const import (
)
CODEOWNERS = ["@hwstar", "@clydebarrow", "@bdraco"]
AUTO_LOAD = ["gpio_expander"]
DEPENDENCIES = ["i2c"]
MULTI_CONF = True
CONF_PIN_COUNT = "pin_count"

18
esphome/components/pca9554/pca9554.cpp
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@@ -38,8 +38,8 @@ void PCA9554Component::setup() {
void PCA9554Component::loop() {
// Invalidate the cache at the start of each loop.
// The actual read will happen on demand in digital_read()
this->cache_valid_ = false;
// The actual read will happen on demand when digital_read() is called
this->reset_pin_cache_();
}
void PCA9554Component::dump_config() {
@@ -53,15 +53,17 @@ void PCA9554Component::dump_config() {
}
}
bool PCA9554Component::digital_read(uint8_t pin) {
// Read the inputs once per loop on demand and cache the result
if (!this->cache_valid_ && this->read_inputs_()) {
this->cache_valid_ = true;
}
bool PCA9554Component::digital_read_hw(uint16_t pin) {
// Read all pins from hardware into input_mask_
return this->read_inputs_(); // Return true if I2C read succeeded, false on error
}
bool PCA9554Component::digital_read_cache(uint16_t pin) {
// Return the cached pin state from input_mask_
return this->input_mask_ & (1 << pin);
}
void PCA9554Component::digital_write(uint8_t pin, bool value) {
void PCA9554Component::digital_write_hw(uint16_t pin, bool value) {
if (value) {
this->output_mask_ |= (1 << pin);
} else {

19
esphome/components/pca9554/pca9554.h
View File

@@ -3,22 +3,21 @@
#include "esphome/core/component.h"
#include "esphome/core/hal.h"
#include "esphome/components/i2c/i2c.h"
#include "esphome/components/gpio_expander/cached_gpio.h"
namespace esphome {
namespace pca9554 {
class PCA9554Component : public Component, public i2c::I2CDevice {
class PCA9554Component : public Component,
public i2c::I2CDevice,
public gpio_expander::CachedGpioExpander<uint16_t, 16> {
public:
PCA9554Component() = default;
/// Check i2c availability and setup masks
void setup() override;
/// Poll for input changes periodically
/// Invalidate cache at start of each loop
void loop() override;
/// Helper function to read the value of a pin.
bool digital_read(uint8_t pin);
/// Helper function to write the value of a pin.
void digital_write(uint8_t pin, bool value);
/// Helper function to set the pin mode of a pin.
void pin_mode(uint8_t pin, gpio::Flags flags);
@@ -32,9 +31,13 @@ class PCA9554Component : public Component, public i2c::I2CDevice {
protected:
bool read_inputs_();
bool write_register_(uint8_t reg, uint16_t value);
// Virtual methods from CachedGpioExpander
bool digital_read_hw(uint16_t pin) override;
bool digital_read_cache(uint16_t pin) override;
void digital_write_hw(uint16_t pin, bool value) override;
/// number of bits the expander has
size_t pin_count_{8};
/// width of registers
@@ -45,8 +48,6 @@ class PCA9554Component : public Component, public i2c::I2CDevice {
uint16_t output_mask_{0x00};
/// The state of the actual input pin states - 1 means HIGH, 0 means LOW
uint16_t input_mask_{0x00};
/// Cache validity flag - true if we've read inputs this loop cycle
bool cache_valid_{false};
/// Storage for last I2C error seen
esphome::i2c::ErrorCode last_error_;
};