RPI pin Arduino
RXD TXD
TXD RXD
- GPIO6 RST
+ BCM25 RST
GND GND
+5V RAW
2 433Mhz receive
// 3 433Mhz outdoor temperature sensor receiver # DISABLED
- 8 DHT22
+ 8 DHT22 (VCC from arduino VCC)
10 433Mhz send
11 DS18B20
12 315Mhz send
int int_0 = 300; // ms
int int_1 = 900; // ms
int wait = 2000; // ms
-int repeat = 20; // times (5 times seem a little low for sensors which are more than 10m away)
+int repeat = 5; // times (5 times seem a little low for sensors which are more than 10m away)
void send_315(char *code) {
Serial.print("send 315Mhz ");
#include "DHT.h"
DHT dht;
+#include "RunningAverage.h"
+
+RunningAverage temp_avg(10);
+RunningAverage hum_avg(10);
+
// setup
void help() {
// DHT22
dht.setup(8);
+ temp_avg.addValue( dht.getTemperature() );
+ hum_avg.addValue( dht.getHumidity() );
+
}
int serial_pos = 0;
char serial_data[2]; // socket (0-9), state (0-1)
char binary_data[32];
+unsigned int dht22_errors = 0;
+
+unsigned long time = millis();
void loop() {
+ if ( millis() - time > 2000 ) {
+ float t = dht.getTemperature();
+ float delta_t = abs(t - temp_avg.getAverage());
+ if ( dht.getStatus() == 0 && delta_t < 10 )
+ temp_avg.addValue( t );
+ else dht22_errors++;
+ float h = dht.getHumidity();
+ float delta_h = abs(h - hum_avg.getAverage());
+ if ( dht.getStatus() == 0 && delta_h < 10 )
+ hum_avg.addValue( h );
+ else dht22_errors++;
+ time = millis();
+ }
+
if (mySwitch.available()) {
Serial.print(mySwitch.getReceivedBitlength());
Serial.print(" bits ");
// DHT22
if (input == 'd') {
Serial.print("temperature=");
- Serial.print(dht.getTemperature());
+ Serial.print(temp_avg.getAverage());
Serial.print(" humidity=");
- Serial.print(dht.getHumidity());
- Serial.print(" status=");
- Serial.println(dht.getStatusString());
+ Serial.print(hum_avg.getAverage());
+ Serial.print(" errors=");
+ Serial.println(dht22_errors);
}
- if ( input >= 0x30 && input <= 0x39 ) {
+ if ( input >= 0x30 && input <= 0x39 && serial_pos < 2 ) {
input = input - 0x30; // ASCII to number
serial_data[serial_pos++] = input;
} else {