mirror of
https://github.com/esphome/esphome.git
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86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
#include "tee501.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace tee501 {
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static const char *const TAG = "tee501";
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void TEE501Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up TEE501...");
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uint8_t address[] = {0x70, 0x29};
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this->write(address, 2, false);
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uint8_t identification[9];
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this->read(identification, 9);
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if (identification[8] != calc_crc8_(identification, 0, 7)) {
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this->error_code_ = CRC_CHECK_FAILED;
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this->mark_failed();
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return;
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}
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ESP_LOGV(TAG, " Serial Number: 0x%s", format_hex(identification + 0, 7).c_str());
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}
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void TEE501Component::dump_config() {
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ESP_LOGCONFIG(TAG, "TEE501:");
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LOG_I2C_DEVICE(this);
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switch (this->error_code_) {
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case COMMUNICATION_FAILED:
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ESP_LOGE(TAG, "Communication with TEE501 failed!");
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break;
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case CRC_CHECK_FAILED:
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ESP_LOGE(TAG, "The crc check failed");
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break;
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case NONE:
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default:
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break;
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}
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LOG_UPDATE_INTERVAL(this);
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LOG_SENSOR(" ", "TEE501", this);
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}
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float TEE501Component::get_setup_priority() const { return setup_priority::DATA; }
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void TEE501Component::update() {
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uint8_t address_1[] = {0x2C, 0x1B};
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this->write(address_1, 2, true);
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this->set_timeout(50, [this]() {
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uint8_t i2c_response[3];
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this->read(i2c_response, 3);
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if (i2c_response[2] != calc_crc8_(i2c_response, 0, 1)) {
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this->error_code_ = CRC_CHECK_FAILED;
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this->status_set_warning();
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return;
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}
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float temperature = (float) encode_uint16(i2c_response[0], i2c_response[1]);
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if (temperature > 55536) {
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temperature = (temperature - 65536) / 100;
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} else {
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temperature = temperature / 100;
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}
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ESP_LOGD(TAG, "Got temperature=%.2f°C", temperature);
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this->publish_state(temperature);
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this->status_clear_warning();
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});
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}
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unsigned char TEE501Component::calc_crc8_(const unsigned char buf[], unsigned char from, unsigned char to) {
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unsigned char crc_val = 0xFF;
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unsigned char i = 0;
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unsigned char j = 0;
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for (i = from; i <= to; i++) {
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int cur_val = buf[i];
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for (j = 0; j < 8; j++) {
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if (((crc_val ^ cur_val) & 0x80) != 0) // If MSBs are not equal
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{
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crc_val = ((crc_val << 1) ^ 0x31);
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} else {
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crc_val = (crc_val << 1);
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}
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cur_val = cur_val << 1;
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}
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}
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return crc_val;
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}
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} // namespace tee501
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} // namespace esphome
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