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123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
#include "xl9535.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace xl9535 {
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static const char *const TAG = "xl9535";
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void XL9535Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up XL9535...");
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// Check to see if the device can read from the register
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uint8_t port = 0;
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if (this->read_register(XL9535_INPUT_PORT_0_REGISTER, &port, 1) != i2c::ERROR_OK) {
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this->mark_failed();
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return;
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}
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}
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void XL9535Component::dump_config() {
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ESP_LOGCONFIG(TAG, "XL9535:");
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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 XL9535 failed!");
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}
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}
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bool XL9535Component::digital_read(uint8_t pin) {
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bool state = false;
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uint8_t port = 0;
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if (pin > 7) {
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if (this->read_register(XL9535_INPUT_PORT_1_REGISTER, &port, 1) != i2c::ERROR_OK) {
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this->status_set_warning();
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return state;
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}
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state = (port & (1 << (pin - 10))) != 0;
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} else {
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if (this->read_register(XL9535_INPUT_PORT_0_REGISTER, &port, 1) != i2c::ERROR_OK) {
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this->status_set_warning();
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return state;
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}
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state = (port & (1 << pin)) != 0;
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}
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this->status_clear_warning();
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return state;
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}
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void XL9535Component::digital_write(uint8_t pin, bool value) {
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uint8_t port = 0;
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uint8_t register_data = 0;
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if (pin > 7) {
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if (this->read_register(XL9535_OUTPUT_PORT_1_REGISTER, ®ister_data, 1) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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register_data = register_data & (~(1 << (pin - 10)));
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port = register_data | value << (pin - 10);
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if (this->write_register(XL9535_OUTPUT_PORT_1_REGISTER, &port, 1) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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} else {
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if (this->read_register(XL9535_OUTPUT_PORT_0_REGISTER, ®ister_data, 1) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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register_data = register_data & (~(1 << pin));
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port = register_data | value << pin;
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if (this->write_register(XL9535_OUTPUT_PORT_0_REGISTER, &port, 1) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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}
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this->status_clear_warning();
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}
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void XL9535Component::pin_mode(uint8_t pin, gpio::Flags mode) {
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uint8_t port = 0;
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if (pin > 7) {
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this->read_register(XL9535_CONFIG_PORT_1_REGISTER, &port, 1);
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if (mode == gpio::FLAG_INPUT) {
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port = port | (1 << (pin - 10));
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} else if (mode == gpio::FLAG_OUTPUT) {
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port = port & (~(1 << (pin - 10)));
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}
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this->write_register(XL9535_CONFIG_PORT_1_REGISTER, &port, 1);
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} else {
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this->read_register(XL9535_CONFIG_PORT_0_REGISTER, &port, 1);
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if (mode == gpio::FLAG_INPUT) {
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port = port | (1 << pin);
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} else if (mode == gpio::FLAG_OUTPUT) {
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port = port & (~(1 << pin));
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}
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this->write_register(XL9535_CONFIG_PORT_0_REGISTER, &port, 1);
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}
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}
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void XL9535GPIOPin::setup() { this->pin_mode(this->flags_); }
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std::string XL9535GPIOPin::dump_summary() const { return str_snprintf("%u via XL9535", 15, this->pin_); }
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void XL9535GPIOPin::pin_mode(gpio::Flags flags) { this->parent_->pin_mode(this->pin_, flags); }
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bool XL9535GPIOPin::digital_read() { return this->parent_->digital_read(this->pin_) != this->inverted_; }
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void XL9535GPIOPin::digital_write(bool value) { this->parent_->digital_write(this->pin_, value != this->inverted_); }
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} // namespace xl9535
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} // namespace esphome
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