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57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/hal.h"
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#include "esphome/components/binary_sensor/binary_sensor.h"
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#include <vector>
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namespace esphome {
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namespace ttp229_bsf {
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class TTP229BSFChannel : public binary_sensor::BinarySensor {
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public:
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void set_channel(uint8_t channel) { channel_ = channel; }
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void process(uint16_t data) { this->publish_state(data & (1 << this->channel_)); }
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protected:
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uint8_t channel_;
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};
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class TTP229BSFComponent : public Component {
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public:
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void set_sdo_pin(GPIOPin *sdo_pin) { sdo_pin_ = sdo_pin; }
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void set_scl_pin(GPIOPin *scl_pin) { scl_pin_ = scl_pin; }
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void register_channel(TTP229BSFChannel *channel) { this->channels_.push_back(channel); }
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void setup() override;
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void dump_config() override;
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float get_setup_priority() const override { return setup_priority::DATA; }
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void loop() override {
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// check datavalid if sdo is high
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if (!this->sdo_pin_->digital_read()) {
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return;
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}
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uint16_t touched = 0;
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for (uint8_t i = 0; i < 16; i++) {
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this->scl_pin_->digital_write(false);
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delayMicroseconds(2); // 500KHz
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bool bitval = !this->sdo_pin_->digital_read();
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this->scl_pin_->digital_write(true);
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delayMicroseconds(2); // 500KHz
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touched |= uint16_t(bitval) << i;
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}
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for (auto *channel : this->channels_) {
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channel->process(touched);
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}
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}
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protected:
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GPIOPin *sdo_pin_;
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GPIOPin *scl_pin_;
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std::vector<TTP229BSFChannel *> channels_{};
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};
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} // namespace ttp229_bsf
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} // namespace esphome
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