ESPHome 2025.6.3
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hte501.cpp
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1#include "hte501.h"
3#include "esphome/core/log.h"
4
5namespace esphome {
6namespace hte501 {
7
8static const char *const TAG = "hte501";
9
11 ESP_LOGCONFIG(TAG, "Running setup");
12 uint8_t address[] = {0x70, 0x29};
13 this->write(address, 2, false);
14 uint8_t identification[9];
15 this->read(identification, 9);
16 if (identification[8] != calc_crc8_(identification, 0, 7)) {
17 this->error_code_ = CRC_CHECK_FAILED;
18 this->mark_failed();
19 return;
20 }
21 ESP_LOGV(TAG, " Serial Number: 0x%s", format_hex(identification + 0, 7).c_str());
22}
23
25 ESP_LOGCONFIG(TAG, "HTE501:");
26 LOG_I2C_DEVICE(this);
27 switch (this->error_code_) {
29 ESP_LOGE(TAG, ESP_LOG_MSG_COMM_FAIL);
30 break;
32 ESP_LOGE(TAG, "The crc check failed");
33 break;
34 case NONE:
35 default:
36 break;
37 }
38 LOG_UPDATE_INTERVAL(this);
39 LOG_SENSOR(" ", "Temperature", this->temperature_sensor_);
40 LOG_SENSOR(" ", "Humidity", this->humidity_sensor_);
41}
42
45 uint8_t address_1[] = {0x2C, 0x1B};
46 this->write(address_1, 2, true);
47 this->set_timeout(50, [this]() {
48 uint8_t i2c_response[6];
49 this->read(i2c_response, 6);
50 if (i2c_response[2] != calc_crc8_(i2c_response, 0, 1) && i2c_response[5] != calc_crc8_(i2c_response, 3, 4)) {
51 this->error_code_ = CRC_CHECK_FAILED;
52 this->status_set_warning();
53 return;
54 }
55 float temperature = (float) encode_uint16(i2c_response[0], i2c_response[1]);
56 if (temperature > 55536) {
57 temperature = (temperature - 65536) / 100;
58 } else {
60 }
61 float humidity = ((float) encode_uint16(i2c_response[3], i2c_response[4])) / 100.0f;
62
63 ESP_LOGD(TAG, "Got temperature=%.2f°C humidity=%.2f%%", temperature, humidity);
64 if (this->temperature_sensor_ != nullptr)
65 this->temperature_sensor_->publish_state(temperature);
66 if (this->humidity_sensor_ != nullptr)
67 this->humidity_sensor_->publish_state(humidity);
69 });
70}
71
72unsigned char HTE501Component::calc_crc8_(const unsigned char buf[], unsigned char from, unsigned char to) {
73 unsigned char crc_val = 0xFF;
74 unsigned char i = 0;
75 unsigned char j = 0;
76 for (i = from; i <= to; i++) {
77 int cur_val = buf[i];
78 for (j = 0; j < 8; j++) {
79 if (((crc_val ^ cur_val) & 0x80) != 0) // If MSBs are not equal
80 {
81 crc_val = ((crc_val << 1) ^ 0x31);
82 } else {
83 crc_val = (crc_val << 1);
84 }
85 cur_val = cur_val << 1;
86 }
87 }
88 return crc_val;
89}
90} // namespace hte501
91} // namespace esphome
uint8_t address
Definition bl0906.h:4
virtual void mark_failed()
Mark this component as failed.
void status_set_warning(const char *message="unspecified")
void status_clear_warning()
void set_timeout(const std::string &name, uint32_t timeout, std::function< void()> &&f)
Set a timeout function with a unique name.
Definition component.cpp:75
sensor::Sensor * temperature_sensor_
Definition hte501.h:23
float get_setup_priority() const override
Definition hte501.cpp:43
sensor::Sensor * humidity_sensor_
Definition hte501.h:24
unsigned char calc_crc8_(const unsigned char buf[], unsigned char from, unsigned char to)
Definition hte501.cpp:72
enum esphome::hte501::HTE501Component::ErrorCode NONE
ErrorCode write(const uint8_t *data, size_t len, bool stop=true)
writes an array of bytes to a device using an I2CBus
Definition i2c.h:190
ErrorCode read(uint8_t *data, size_t len)
reads an array of bytes from the device using an I2CBus
Definition i2c.h:164
void publish_state(float state)
Publish a new state to the front-end.
Definition sensor.cpp:39
const float DATA
For components that import data from directly connected sensors like DHT.
Definition component.cpp:20
Providing packet encoding functions for exchanging data with a remote host.
Definition a01nyub.cpp:7
std::string format_hex(const uint8_t *data, size_t length)
Format the byte array data of length len in lowercased hex.
Definition helpers.cpp:360
constexpr uint16_t encode_uint16(uint8_t msb, uint8_t lsb)
Encode a 16-bit value given the most and least significant byte.
Definition helpers.h:192
uint16_t temperature
Definition sun_gtil2.cpp:12