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[sx1509] Migrate to CachedGpioExpander to reduce I2C bus usage

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This commit is contained in:
J. Nick Koston
2025-09-04 14:36:27 -05:00
parent d9ded6b87e
commit 06833d6f8b
1 changed files with 3 additions and 6 deletions
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9
esphome/components/sx1509/sx1509.cpp
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@@ -77,15 +77,12 @@ void SX1509Component::loop() {
} }
bool SX1509Component::digital_read_hw(uint8_t pin) { bool SX1509Component::digital_read_hw(uint8_t pin) {
if (this->ddr_mask_ & (1 << pin)) { // Always read all pins when any input pin is accessed
if (!this->read_byte_16(REG_DATA_B, &this->input_mask_)) return this->read_byte_16(REG_DATA_B, &this->input_mask_);
return false;
return true;
}
return false;
} }
bool SX1509Component::digital_read_cache(uint8_t pin) { bool SX1509Component::digital_read_cache(uint8_t pin) {
// Return cached value for input pins, false for output pins
if (this->ddr_mask_ & (1 << pin)) { if (this->ddr_mask_ & (1 << pin)) {
return this->input_mask_ & (1 << pin); return this->input_mask_ & (1 << pin);
} }