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Code Issues Releases Wiki Activity

Add support for HTE501 (#3772)

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This commit is contained in:
Mathias Stock
2023-01-17 22:42:47 +01:00
committed by GitHub
parent 4bf5faf808
commit 37d17feecf
6 changed files with 186 additions and 0 deletions
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90
esphome/components/hte501/hte501.cpp Normal file
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#include "hte501.h"
#include "esphome/core/log.h"
namespace esphome {
namespace hte501 {
static const char *const TAG = "hte501";
void HTE501Component::setup() {
ESP_LOGCONFIG(TAG, "Setting up HTE501...");
uint8_t address[] = {0x70, 0x29};
this->write(address, 2, false);
uint8_t identification[9];
this->read(identification, 9);
if (identification[8] != calc_crc8_(identification, 0, 7)) {
this->error_code_ = CRC_CHECK_FAILED;
this->mark_failed();
return;
}
ESP_LOGV(TAG, " Serial Number: 0x%s", format_hex(identification + 0, 7).c_str());
}
void HTE501Component::dump_config() {
ESP_LOGCONFIG(TAG, "HTE501:");
LOG_I2C_DEVICE(this);
switch (this->error_code_) {
case COMMUNICATION_FAILED:
ESP_LOGE(TAG, "Communication with HTE501 failed!");
break;
case CRC_CHECK_FAILED:
ESP_LOGE(TAG, "The crc check failed");
break;
case NONE:
default:
break;
}
LOG_UPDATE_INTERVAL(this);
LOG_SENSOR(" ", "Temperature", this->temperature_sensor_);
LOG_SENSOR(" ", "Humidity", this->humidity_sensor_);
}
float HTE501Component::get_setup_priority() const { return setup_priority::DATA; }
void HTE501Component::update() {
uint8_t address_1[] = {0x2C, 0x1B};
this->write(address_1, 2, true);
this->set_timeout(50, [this]() {
uint8_t i2c_response[6];
this->read(i2c_response, 6);
if (i2c_response[2] != calc_crc8_(i2c_response, 0, 1) && i2c_response[5] != calc_crc8_(i2c_response, 3, 4)) {
this->error_code_ = CRC_CHECK_FAILED;
this->status_set_warning();
return;
}
float temperature = (float) encode_uint16(i2c_response[0], i2c_response[1]);
if (temperature > 55536) {
temperature = (temperature - 65536) / 100;
} else {
temperature = temperature / 100;
}
float humidity = ((float) encode_uint16(i2c_response[3], i2c_response[4])) / 100.0f;
ESP_LOGD(TAG, "Got temperature=%.2f°C humidity=%.2f%%", temperature, humidity);
if (this->temperature_sensor_ != nullptr)
this->temperature_sensor_->publish_state(temperature);
if (this->humidity_sensor_ != nullptr)
this->humidity_sensor_->publish_state(humidity);
this->status_clear_warning();
});
}
unsigned char HTE501Component::calc_crc8_(const unsigned char buf[], unsigned char from, unsigned char to) {
unsigned char crc_val = 0xFF;
unsigned char i = 0;
unsigned char j = 0;
for (i = from; i <= to; i++) {
int cur_val = buf[i];
for (j = 0; j < 8; j++) {
if (((crc_val ^ cur_val) & 0x80) != 0) // If MSBs are not equal
{
crc_val = ((crc_val << 1) ^ 0x31);
} else {
crc_val = (crc_val << 1);
}
cur_val = cur_val << 1;
}
}
return crc_val;
}
} // namespace hte501
} // namespace esphome