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8e75980ebd
* Cleanup dashboard JS * Add vscode * Save start_mark/end_mark * Updates * Updates * Remove need for cv.nameable It's a bit hacky but removes so much bloat from integrations * Add enum helper * Document APIs, and Improvements * Fixes * Fixes * Update PULL_REQUEST_TEMPLATE.md * Updates * Updates * Updates
64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
#include "hx711.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace hx711 {
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static const char *TAG = "hx711";
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void HX711Sensor::setup() {
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ESP_LOGCONFIG(TAG, "Setting up HX711 '%s'...", this->name_.c_str());
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this->sck_pin_->setup();
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this->dout_pin_->setup();
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// Read sensor once without publishing to set the gain
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this->read_sensor_(nullptr);
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}
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void HX711Sensor::dump_config() {
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LOG_SENSOR("", "HX711", this);
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LOG_PIN(" DOUT Pin: ", this->dout_pin_);
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LOG_PIN(" SCK Pin: ", this->sck_pin_);
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LOG_UPDATE_INTERVAL(this);
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}
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float HX711Sensor::get_setup_priority() const { return setup_priority::DATA; }
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void HX711Sensor::update() {
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uint32_t result;
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if (this->read_sensor_(&result)) {
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ESP_LOGD(TAG, "'%s': Got value %u", this->name_.c_str(), result);
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this->publish_state(result);
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}
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}
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bool HX711Sensor::read_sensor_(uint32_t *result) {
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if (this->dout_pin_->digital_read()) {
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ESP_LOGW(TAG, "HX711 is not ready for new measurements yet!");
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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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uint32_t data = 0;
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for (uint8_t i = 0; i < 24; i++) {
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this->sck_pin_->digital_write(true);
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delayMicroseconds(1);
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data |= uint32_t(this->dout_pin_->digital_read()) << (24 - i);
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this->sck_pin_->digital_write(false);
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delayMicroseconds(1);
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}
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// Cycle clock pin for gain setting
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for (uint8_t i = 0; i < this->gain_; i++) {
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this->sck_pin_->digital_write(true);
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this->sck_pin_->digital_write(false);
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}
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data ^= 0x800000;
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if (result != nullptr)
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*result = data;
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return true;
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}
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} // namespace hx711
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} // namespace esphome
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