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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>
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
#include "pcf8574_display.h"
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#include "esphome/core/log.h"
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#include "esphome/core/hal.h"
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namespace esphome {
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namespace lcd_pcf8574 {
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static const char *const TAG = "lcd_pcf8574";
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static const uint8_t LCD_DISPLAY_BACKLIGHT_ON = 0x08;
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static const uint8_t LCD_DISPLAY_BACKLIGHT_OFF = 0x00;
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void PCF8574LCDDisplay::setup() {
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ESP_LOGCONFIG(TAG, "Setting up PCF8574 LCD Display...");
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this->backlight_value_ = LCD_DISPLAY_BACKLIGHT_ON;
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if (!this->write_bytes(this->backlight_value_, nullptr, 0)) {
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this->mark_failed();
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return;
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}
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LCDDisplay::setup();
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}
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void PCF8574LCDDisplay::dump_config() {
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ESP_LOGCONFIG(TAG, "PCF8574 LCD Display:");
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ESP_LOGCONFIG(TAG, " Columns: %u, Rows: %u", this->columns_, this->rows_);
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LOG_I2C_DEVICE(this);
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LOG_UPDATE_INTERVAL(this);
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if (this->is_failed()) {
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ESP_LOGE(TAG, "Communication with LCD Display failed!");
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}
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}
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void PCF8574LCDDisplay::write_n_bits(uint8_t value, uint8_t n) {
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if (n == 4) {
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// Ugly fix: in the super setup() with n == 4 value needs to be shifted left
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value <<= 4;
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}
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uint8_t data = value | this->backlight_value_; // Set backlight state
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this->write_bytes(data, nullptr, 0);
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// Pulse ENABLE
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this->write_bytes(data | 0x04, nullptr, 0);
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delayMicroseconds(1); // >450ns
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this->write_bytes(data, nullptr, 0);
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delayMicroseconds(100); // >37us
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}
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void PCF8574LCDDisplay::send(uint8_t value, bool rs) {
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this->write_n_bits((value & 0xF0) | rs, 0);
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this->write_n_bits(((value << 4) & 0xF0) | rs, 0);
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}
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void PCF8574LCDDisplay::backlight() {
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this->backlight_value_ = LCD_DISPLAY_BACKLIGHT_ON;
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this->write_bytes(this->backlight_value_, nullptr, 0);
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}
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void PCF8574LCDDisplay::no_backlight() {
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this->backlight_value_ = LCD_DISPLAY_BACKLIGHT_OFF;
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this->write_bytes(this->backlight_value_, nullptr, 0);
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}
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} // namespace lcd_pcf8574
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} // namespace esphome
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