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trying the SimpleDHT

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This commit is contained in:
Roald Batts 2022-12-28 22:36:14 -05:00
parent 569cd4e795
commit 7d09bff498
15 changed files with 1145 additions and 0 deletions
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42
SimpleDHT/examples/DHT22ErrCount/DHT22ErrCount.ino Normal file
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#include <SimpleDHT.h>
// for DHT22,
// VCC: 5V or 3V
// GND: GND
// DATA: 2
int pinDHT22 = 2;
SimpleDHT22 dht22(pinDHT22);
void setup() {
Serial.begin(115200);
}
void loop() {
// start working...
Serial.println("=================================");
Serial.println("Sample DHT22 with error count");
int cnt = 0;
int err_cnt = 0;
for (;;) {
cnt++;
float temperature = 0;
float humidity = 0;
int err = SimpleDHTErrSuccess;
if ((err = dht22.read2(&temperature, &humidity, NULL)) != SimpleDHTErrSuccess) {
Serial.print("Read DHT22 failed, err="); Serial.print(SimpleDHTErrCode(err));
Serial.print(","); Serial.print(SimpleDHTErrDuration(err));
err_cnt++;
} else {
Serial.print("DHT22, ");
Serial.print((float)temperature); Serial.print(" *C, ");
Serial.print((float)humidity); Serial.print(" RH%");
}
Serial.print(", total: "); Serial.print(cnt);
Serial.print(", err: "); Serial.print(err_cnt);
Serial.print(", success rate: "); Serial.print((cnt - err_cnt) * 100.0 / (float)cnt); Serial.println("%");
delay(2500);
}
}