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[TCS34725] remove duplicated endian conversion (#3037)

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Co-authored-by: Oxan van Leeuwen <oxan@oxanvanleeuwen.nl>
This commit is contained in:
Martin 2022-01-24 23:41:14 +01:00 committed by GitHub
parent ef5d959788
commit 6ff3942e8b
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 49 additions and 22 deletions
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61
esphome/components/tcs34725/tcs34725.cpp
View file

@ -21,23 +21,23 @@ static const uint8_t TCS34725_REGISTER_BDATAL = TCS34725_COMMAND_BIT | 0x1A;
void TCS34725Component::setup() {
ESP_LOGCONFIG(TAG, "Setting up TCS34725...");
uint8_t id;
if (!this->read_byte(TCS34725_REGISTER_ID, &id)) {
if (this->read_register(TCS34725_REGISTER_ID, &id, 1) != i2c::ERROR_OK) {
this->mark_failed();
return;
}
if (!this->write_byte(TCS34725_REGISTER_ATIME, this->integration_reg_) ||
!this->write_byte(TCS34725_REGISTER_CONTROL, this->gain_reg_)) {
if (this->write_config_register_(TCS34725_REGISTER_ATIME, this->integration_reg_) != i2c::ERROR_OK ||
this->write_config_register_(TCS34725_REGISTER_CONTROL, this->gain_reg_) != i2c::ERROR_OK) {
this->mark_failed();
return;
}
if (!this->write_byte(TCS34725_REGISTER_ENABLE, 0x01)) { // Power on (internal oscillator on)
if (this->write_config_register_(TCS34725_REGISTER_ENABLE, 0x01) !=
i2c::ERROR_OK) { // Power on (internal oscillator on)
this->mark_failed();
return;
}
delay(3);
if (!this->write_byte(TCS34725_REGISTER_ENABLE, 0x03)) { // Power on (internal oscillator on) + RGBC ADC Enable
if (this->write_config_register_(TCS34725_REGISTER_ENABLE, 0x03) !=
i2c::ERROR_OK) { // Power on (internal oscillator on) + RGBC ADC Enable
this->mark_failed();
return;
}
@ -134,9 +134,9 @@ void TCS34725Component::calculate_temperature_and_lux_(uint16_t r, uint16_t g, u
/* Adjust sat to 75% to avoid analog saturation if atime < 153.6ms */
sat -= sat / 4.f;
}
/* Check for saturation and mark the sample as invalid if true */
if (c >= sat) {
ESP_LOGW(TAG, "Saturation too high, discarding sample with saturation %.1f and clear %d", sat, c);
return;
}
@ -173,23 +173,40 @@ void TCS34725Component::update() {
uint16_t raw_g;
uint16_t raw_b;
if (!this->read_byte_16(TCS34725_REGISTER_CDATAL, &raw_c) || !this->read_byte_16(TCS34725_REGISTER_RDATAL, &raw_r) ||
!this->read_byte_16(TCS34725_REGISTER_GDATAL, &raw_g) || !this->read_byte_16(TCS34725_REGISTER_BDATAL, &raw_b)) {
ESP_LOGW(TAG, "Reading data from TCS34725 failed!");
if (this->read_data_register_(TCS34725_REGISTER_CDATAL, raw_c) != i2c::ERROR_OK) {
this->status_set_warning();
return;
}
if (this->read_data_register_(TCS34725_REGISTER_RDATAL, raw_r) != i2c::ERROR_OK) {
this->status_set_warning();
return;
}
if (this->read_data_register_(TCS34725_REGISTER_GDATAL, raw_g) != i2c::ERROR_OK) {
this->status_set_warning();
return;
}
if (this->read_data_register_(TCS34725_REGISTER_BDATAL, raw_b) != i2c::ERROR_OK) {
this->status_set_warning();
return;
}
ESP_LOGV(TAG, "Raw values clear=%x red=%x green=%x blue=%x", raw_c, raw_r, raw_g, raw_b);
// May need to fix endianness as the data read over I2C is big-endian, but most ESP platforms are little-endian
raw_c = i2c::i2ctohs(raw_c);
raw_r = i2c::i2ctohs(raw_r);
raw_g = i2c::i2ctohs(raw_g);
raw_b = i2c::i2ctohs(raw_b);
float channel_c;
float channel_r;
float channel_g;
float channel_b;
// avoid division by 0 and return black if clear is 0
if (raw_c == 0) {
channel_c = channel_r = channel_g = channel_b = 0.0f;
} else {
float max_count = this->integration_time_ * 1024.0f / 2.4;
float sum = raw_c;
channel_r = raw_r / sum * 100.0f;
channel_g = raw_g / sum * 100.0f;
channel_b = raw_b / sum * 100.0f;
channel_c = raw_c / max_count * 100.0f;
}
const float channel_c = raw_c / 655.35f;
const float channel_r = raw_r / 655.35f;
const float channel_g = raw_g / 655.35f;
const float channel_b = raw_b / 655.35f;
if (this->clear_sensor_ != nullptr)
this->clear_sensor_->publish_state(channel_c);
if (this->red_sensor_ != nullptr)
@ -209,8 +226,8 @@ void TCS34725Component::update() {
if (this->color_temperature_sensor_ != nullptr)
this->color_temperature_sensor_->publish_state(this->color_temperature_);
ESP_LOGD(TAG, "Got R=%.1f%%,G=%.1f%%,B=%.1f%%,C=%.1f%% Illuminance=%.1flx Color Temperature=%.1fK", channel_r,
channel_g, channel_b, channel_c, this->illuminance_, this->color_temperature_);
ESP_LOGD(TAG, "Got Red=%.1f%%,Green=%.1f%%,Blue=%.1f%%,Clear=%.1f%% Illuminance=%.1flx Color Temperature=%.1fK",
channel_r, channel_g, channel_b, channel_c, this->illuminance_, this->color_temperature_);
this->status_clear_warning();
}

10
esphome/components/tcs34725/tcs34725.h
View file

@ -56,6 +56,16 @@ class TCS34725Component : public PollingComponent, public i2c::I2CDevice {
void dump_config() override;
protected:
i2c::ErrorCode read_data_register_(uint8_t a_register, uint16_t &data) {
uint8_t buffer[2];
auto retval = this->read_register(a_register, buffer, 2);
if (retval == i2c::ERROR_OK)
data = (uint16_t(buffer[1]) << 8) | (uint16_t(buffer[0]) & 0xFF);
return retval;
}
i2c::ErrorCode write_config_register_(uint8_t a_register, uint8_t data) {
return this->write_register(a_register, &data, 1);
}
sensor::Sensor *clear_sensor_{nullptr};
sensor::Sensor *red_sensor_{nullptr};
sensor::Sensor *green_sensor_{nullptr};