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TD-er
dcf8e86db7
This should also fix #1381. There is something strange about the handling of micros() timers in `NewPingESP8266`. For this reason I added also a timeout based on `millis()`.
22 lines
1.1 KiB
Plaintext
22 lines
1.1 KiB
Plaintext
// ---------------------------------------------------------------------------
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// Example NewPingESP8266 library sketch that does a ping about 20 times per second.
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// ---------------------------------------------------------------------------
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#include <NewPingESP8266.h>
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#define TRIGGER_PIN 12 // Arduino pin tied to trigger pin on the ultrasonic sensor.
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#define ECHO_PIN 11 // Arduino pin tied to echo pin on the ultrasonic sensor.
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#define MAX_DISTANCE 200 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.
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NewPingESP8266 sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPingESP8266 setup of pins and maximum distance.
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void setup() {
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Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results.
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}
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void loop() {
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delay(50); // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
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Serial.print("Ping: ");
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Serial.print(sonar.ping_cm()); // Send ping, get distance in cm and print result (0 = outside set distance range)
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Serial.println("cm");
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} |