102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
#include "keypad.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace keypad {
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static const char *TAG = "keypad";
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void Keypad::setup() {
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for (auto *pin : this->rows_)
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if (!has_diodes_)
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pin->pin_mode(gpio::FLAG_INPUT);
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else
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pin->digital_write(true);
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for (auto *pin : this->columns_)
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pin->pin_mode(gpio::FLAG_INPUT | gpio::FLAG_PULLUP);
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}
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void Keypad::loop() {
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static unsigned long active_start = 0;
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static int active_key = -1;
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unsigned long now = millis();
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int key = -1;
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bool error = false;
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int pos = 0, row, col;
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for (auto *row : this->rows_) {
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if (!has_diodes_)
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row->pin_mode(gpio::FLAG_OUTPUT);
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row->digital_write(false);
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for (auto *col : this->columns_) {
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if (!col->digital_read()) {
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if (key != -1)
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error = true;
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else
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key = pos;
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}
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pos++;
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}
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row->digital_write(true);
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if (!has_diodes_)
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row->pin_mode(gpio::FLAG_INPUT);
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}
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if (error)
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return;
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if (key != active_key) {
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if ((active_key != -1) && (this->pressed_key_ == active_key)) {
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row = this->pressed_key_ / this->columns_.size();
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col = this->pressed_key_ % this->columns_.size();
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ESP_LOGD(TAG, "key @ row %d, col %d released", row, col);
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for (auto &listener : this->listeners_)
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listener->button_released(row, col);
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if (this->keys_.size()) {
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unsigned char keycode = this->keys_[this->pressed_key_];
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ESP_LOGD(TAG, "key '%c' released", keycode);
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for (auto &listener : this->listeners_)
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listener->key_released(keycode);
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}
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this->pressed_key_ = -1;
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}
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active_key = key;
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if (key != -1)
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active_start = now;
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return;
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}
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if ((this->pressed_key_ == key) || (now - active_start < this->debounce_time_))
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return;
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row = key / this->columns_.size();
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col = key % this->columns_.size();
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ESP_LOGD(TAG, "key @ row %d, col %d pressed", row, col);
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for (auto &listener : this->listeners_)
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listener->button_pressed(row, col);
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if (this->keys_.size()) {
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unsigned char keycode = this->keys_[key];
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ESP_LOGD(TAG, "key '%c' pressed", keycode);
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for (auto &listener : this->listeners_)
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listener->key_pressed(keycode);
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}
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this->pressed_key_ = key;
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}
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void Keypad::dump_config() {
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ESP_LOGCONFIG(TAG, "Keypad:");
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ESP_LOGCONFIG(TAG, " Rows:");
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for (auto &pin : this->rows_)
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LOG_PIN(" Pin: ", pin);
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ESP_LOGCONFIG(TAG, " Cols:");
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for (auto &pin : this->columns_)
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LOG_PIN(" Pin: ", pin);
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}
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void Keypad::register_listener(KeypadListener *listener) {
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this->listeners_.push_back(listener);
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}
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} // namespace keypad
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} // namespace esphome
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