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SX1509 output debounce fix (resolves esphome/issues#4402) (#4672)

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tracestep 2023-10-25 23:36:58 -03:00 committed by GitHub
parent 8b9a7608f0
commit 6b8a75d3b8
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2 changed files with 13 additions and 2 deletions
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14
esphome/components/sx1509/sx1509.cpp
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@ -68,9 +68,18 @@ void SX1509Component::digital_write(uint8_t pin, bool bit_value) {
uint16_t temp_reg_data = 0;
this->read_byte_16(REG_DATA_B, &temp_reg_data);
if (bit_value) {
temp_reg_data |= (1 << pin);
output_state_ |= (1 << pin); // set bit in shadow register
} else {
temp_reg_data &= ~(1 << pin);
output_state_ &= ~(1 << pin); // reset bit shadow register
}
for (uint16_t b = 0x8000; b; b >>= 1) {
if ((~ddr_mask_) & b) { // transfer bits of outputs, but don't mess with inputs
if (output_state_ & b) {
temp_reg_data |= b;
} else {
temp_reg_data &= ~b;
}
}
}
this->write_byte_16(REG_DATA_B, temp_reg_data);
}
@ -134,6 +143,7 @@ void SX1509Component::setup_led_driver(uint8_t pin) {
this->read_byte_16(REG_DATA_B, &temp_word);
temp_word &= ~(1 << pin);
output_state_ &= ~(1 << pin);
this->write_byte_16(REG_DATA_B, temp_word);
}

1
esphome/components/sx1509/sx1509.h
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@ -61,6 +61,7 @@ class SX1509Component : public Component, public i2c::I2CDevice {
uint16_t ddr_mask_ = 0x00;
uint16_t input_mask_ = 0x00;
uint16_t port_mask_ = 0x00;
uint16_t output_state_ = 0x00;
bool has_keypad_ = false;
uint8_t rows_ = 0;
uint8_t cols_ = 0;