mirror of
https://github.com/esphome/esphome.git
synced 2024-11-10 01:07:45 +01:00
parent
2642750466
commit
734cc989de
1 changed files with 14 additions and 4 deletions
|
@ -1,5 +1,6 @@
|
|||
#include "hx711.h"
|
||||
#include "esphome/core/log.h"
|
||||
#include "esphome/core/helpers.h"
|
||||
|
||||
namespace esphome {
|
||||
namespace hx711 {
|
||||
|
@ -10,6 +11,7 @@ void HX711Sensor::setup() {
|
|||
ESP_LOGCONFIG(TAG, "Setting up HX711 '%s'...", this->name_.c_str());
|
||||
this->sck_pin_->setup();
|
||||
this->dout_pin_->setup();
|
||||
this->sck_pin_->digital_write(false);
|
||||
|
||||
// Read sensor once without publishing to set the gain
|
||||
this->read_sensor_(nullptr);
|
||||
|
@ -25,8 +27,9 @@ float HX711Sensor::get_setup_priority() const { return setup_priority::DATA; }
|
|||
void HX711Sensor::update() {
|
||||
uint32_t result;
|
||||
if (this->read_sensor_(&result)) {
|
||||
ESP_LOGD(TAG, "'%s': Got value %u", this->name_.c_str(), result);
|
||||
this->publish_state(result);
|
||||
int32_t value = static_cast<int32_t>(result);
|
||||
ESP_LOGD(TAG, "'%s': Got value %d", this->name_.c_str(), value);
|
||||
this->publish_state(value);
|
||||
}
|
||||
}
|
||||
bool HX711Sensor::read_sensor_(uint32_t *result) {
|
||||
|
@ -39,10 +42,11 @@ bool HX711Sensor::read_sensor_(uint32_t *result) {
|
|||
this->status_clear_warning();
|
||||
uint32_t data = 0;
|
||||
|
||||
disable_interrupts();
|
||||
for (uint8_t i = 0; i < 24; i++) {
|
||||
this->sck_pin_->digital_write(true);
|
||||
delayMicroseconds(1);
|
||||
data |= uint32_t(this->dout_pin_->digital_read()) << (24 - i);
|
||||
data |= uint32_t(this->dout_pin_->digital_read()) << (23 - i);
|
||||
this->sck_pin_->digital_write(false);
|
||||
delayMicroseconds(1);
|
||||
}
|
||||
|
@ -50,10 +54,16 @@ bool HX711Sensor::read_sensor_(uint32_t *result) {
|
|||
// Cycle clock pin for gain setting
|
||||
for (uint8_t i = 0; i < this->gain_; i++) {
|
||||
this->sck_pin_->digital_write(true);
|
||||
delayMicroseconds(1);
|
||||
this->sck_pin_->digital_write(false);
|
||||
delayMicroseconds(1);
|
||||
}
|
||||
enable_interrupts();
|
||||
|
||||
if (data & 0x800000ULL) {
|
||||
data |= 0xFF000000ULL;
|
||||
}
|
||||
|
||||
data ^= 0x800000;
|
||||
if (result != nullptr)
|
||||
*result = data;
|
||||
return true;
|
||||
|
|
Loading…
Reference in a new issue