mirror of
https://github.com/esphome/esphome.git
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ac0d921413
* Socket refactor and SSL * esp-idf temp * Fixes * Echo component and noise * Add noise API transport support * Updates * ESP-IDF * Complete * Fixes * Fixes * Versions update * New i2c APIs * Complete i2c refactor * SPI migration * Revert ESP Preferences migration, too complex for now * OTA support * Remove echo again * Remove ssl again * GPIOFlags updates * Rename esphal and ICACHE_RAM_ATTR * Make ESP32 arduino compilable again * Fix GPIO flags * Complete pin registry refactor and fixes * Fixes to make test1 compile * Remove sdkconfig file * Ignore sdkconfig file * Fixes in reviewing * Make test2 compile * Make test4 compile * Make test5 compile * Run clang-format * Fix lint errors * Use esp-idf APIs instead of btStart * Another round of fixes * Start implementing ESP8266 * Make test3 compile * Guard esp8266 code * Lint * Reformat * Fixes * Fixes v2 * more fixes * ESP-IDF tidy target * Convert ARDUINO_ARCH_ESPxx * Update WiFiSignalSensor * Update time ifdefs * OTA needs millis from hal * RestartSwitch needs delay from hal * ESP-IDF Uart * Fix OTA blank password * Allow setting sdkconfig * Fix idf partitions and allow setting sdkconfig from yaml * Re-add read/write compat APIs and fix esp8266 uart * Fix esp8266 store log strings in flash * Fix ESP32 arduino preferences not initialized * Update ifdefs * Change how sdkconfig change is detected * Add checks to ci-custom and fix them * Run clang-format * Add esp-idf clang-tidy target and fix errors * Fixes from clang-tidy idf round 2 * Fixes from compiling tests with esp-idf * Run clang-format * Switch test5.yaml to esp-idf * Implement ESP8266 Preferences * Lint * Re-do PIO package version selection a bit * Fix arduinoespressif32 package version * Fix unit tests * Lint * Lint fixes * Fix readv/writev not defined * Fix graphing component * Re-add all old options from core/config.py Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
#include "pcf8574.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace pcf8574 {
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static const char *const TAG = "pcf8574";
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void PCF8574Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up PCF8574...");
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if (!this->read_gpio_()) {
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ESP_LOGE(TAG, "PCF8574 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 PCF8574Component::dump_config() {
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ESP_LOGCONFIG(TAG, "PCF8574:");
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LOG_I2C_DEVICE(this)
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ESP_LOGCONFIG(TAG, " Is PCF8575: %s", YESNO(this->pcf8575_));
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if (this->is_failed()) {
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ESP_LOGE(TAG, "Communication with PCF8574 failed!");
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}
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}
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bool PCF8574Component::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 PCF8574Component::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 PCF8574Component::pin_mode(uint8_t pin, gpio::Flags flags) {
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if (flags == gpio::FLAG_INPUT) {
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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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} else if (flags == gpio::FLAG_OUTPUT) {
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// Set mode mask bit
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this->mode_mask_ |= 1 << pin;
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}
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}
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bool PCF8574Component::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 (this->pcf8575_) {
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success = this->read_bytes_raw(data, 2);
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this->input_mask_ = (uint16_t(data[1]) << 8) | (uint16_t(data[0]) << 0);
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} else {
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success = this->read_bytes_raw(data, 1);
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this->input_mask_ = data[0];
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}
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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 PCF8574Component::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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if (this->write(data, this->pcf8575_ ? 2 : 1) != i2c::ERROR_OK) {
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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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float PCF8574Component::get_setup_priority() const { return setup_priority::IO; }
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void PCF8574GPIOPin::setup() { pin_mode(flags_); }
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void PCF8574GPIOPin::pin_mode(gpio::Flags flags) { this->parent_->pin_mode(this->pin_, flags); }
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bool PCF8574GPIOPin::digital_read() { return this->parent_->digital_read(this->pin_) != this->inverted_; }
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void PCF8574GPIOPin::digital_write(bool value) { this->parent_->digital_write(this->pin_, value != this->inverted_); }
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std::string PCF8574GPIOPin::dump_summary() const {
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char buffer[32];
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snprintf(buffer, sizeof(buffer), "%u via PCF8574", pin_);
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return buffer;
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}
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} // namespace pcf8574
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} // namespace esphome
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