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Better DHT error reporting

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Otto Winter 2019-07-01 11:10:03 +02:00
parent 83095e8989
commit 341c99b4fa
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GPG key ID: DB66C0BE6013F97E
1 changed files with 7 additions and 3 deletions
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10
esphome/components/dht/dht.cpp
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@ -153,13 +153,15 @@ bool HOT DHT::read_sensor_(float *temperature, float *humidity, bool report_erro
if (checksum_a != data[4] && checksum_b != data[4]) { if (checksum_a != data[4] && checksum_b != data[4]) {
if (report_errors) { if (report_errors) {
ESP_LOGE(TAG, "Checksum invalid: %u!=%u", checksum_a, data[4]); ESP_LOGW(TAG, "Checksum invalid: %u!=%u", checksum_a, data[4]);
} }
return false; return false;
} }
if (this->model_ == DHT_MODEL_DHT11) { if (this->model_ == DHT_MODEL_DHT11) {
*humidity = data[0]; *humidity = data[0];
if (*humidity > 100)
*humidity = NAN;
*temperature = data[2]; *temperature = data[2];
} else { } else {
uint16_t raw_humidity = (uint16_t(data[0] & 0xFF) << 8) | (data[1] & 0xFF); uint16_t raw_humidity = (uint16_t(data[0] & 0xFF) << 8) | (data[1] & 0xFF);
@ -170,18 +172,20 @@ bool HOT DHT::read_sensor_(float *temperature, float *humidity, bool report_erro
if (raw_temperature == 1 && raw_humidity == 10) { if (raw_temperature == 1 && raw_humidity == 10) {
if (report_errors) { if (report_errors) {
ESP_LOGE(TAG, "Invalid temperature+humidity! Sensor reported 1°C and 1%% Hum"); ESP_LOGW(TAG, "Invalid temperature+humidity! Sensor reported 1°C and 1%% Hum");
} }
return false; return false;
} }
*humidity = raw_humidity * 0.1f; *humidity = raw_humidity * 0.1f;
if (*humidity > 100)
*humidity = NAN;
*temperature = int16_t(raw_temperature) * 0.1f; *temperature = int16_t(raw_temperature) * 0.1f;
} }
if (*temperature == 0.0f && (*humidity == 1.0f || *humidity == 2.0f)) { if (*temperature == 0.0f && (*humidity == 1.0f || *humidity == 2.0f)) {
if (report_errors) { if (report_errors) {
ESP_LOGE(TAG, "DHT reports invalid data. Is the update interval too high or the sensor damaged?"); ESP_LOGW(TAG, "DHT reports invalid data. Is the update interval too high or the sensor damaged?");
} }
return false; return false;
} }