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48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
#include "esp32_dac.h"
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#include "esphome/core/helpers.h"
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#include "esphome/core/log.h"
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#if defined(USE_ESP32_VARIANT_ESP32) || defined(USE_ESP32_VARIANT_ESP32S2)
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namespace esphome {
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namespace esp32_dac {
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#ifdef USE_ESP32_VARIANT_ESP32S2
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static constexpr uint8_t DAC0_PIN = 17;
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#else
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static constexpr uint8_t DAC0_PIN = 25;
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#endif
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static const char *const TAG = "esp32_dac";
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void ESP32DAC::setup() {
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this->pin_->setup();
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this->turn_off();
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const dac_channel_t channel = this->pin_->get_pin() == DAC0_PIN ? DAC_CHAN_0 : DAC_CHAN_1;
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const dac_oneshot_config_t oneshot_cfg{channel};
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dac_oneshot_new_channel(&oneshot_cfg, &this->dac_handle_);
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}
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void ESP32DAC::on_safe_shutdown() { dac_oneshot_del_channel(this->dac_handle_); }
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void ESP32DAC::dump_config() {
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ESP_LOGCONFIG(TAG, "ESP32 DAC:");
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LOG_PIN(" Pin: ", this->pin_);
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LOG_FLOAT_OUTPUT(this);
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}
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void ESP32DAC::write_state(float state) {
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if (this->pin_->is_inverted())
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state = 1.0f - state;
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state = state * 255;
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dac_oneshot_output_voltage(this->dac_handle_, state);
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}
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} // namespace esp32_dac
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} // namespace esphome
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#endif // USE_ESP32_VARIANT_ESP32 || USE_ESP32_VARIANT_ESP32S2
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