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examples/ask/ask_receiver/ask_receiver.ino

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+// ask_receiver.pde
+// -*- mode: C++ -*-
+// Simple example of how to use RadioHead to receive messages
+// with a simple ASK transmitter in a very simple way.
+// Implements a simplex (one-way) receiver with an Rx-B1 module
+// Tested on Arduino Mega, Duemilanova, Uno, Due, Teensy, ESP-12
+
+#include <RH_ASK.h>
+#ifdef RH_HAVE_HARDWARE_SPI
+#include <SPI.h> // Not actually used but needed to compile
+#endif
+
+RH_ASK driver;
+// RH_ASK driver(2000, 4, 5, 0); // ESP8266 or ESP32: do not use pin 11 or 2
+// RH_ASK driver(2000, 3, 4, 0); // ATTiny, RX on D3 (pin 2 on attiny85) TX on D4 (pin 3 on attiny85), 
+// RH_ASK driver(2000, PD14, PD13, 0); STM32F4 Discovery: see tx and rx on Orange and Red LEDS
+
+void setup()
+{
+#ifdef RH_HAVE_SERIAL
+    Serial.begin(9600);	  // Debugging only
+#endif
+    if (!driver.init())
+#ifdef RH_HAVE_SERIAL
+         Serial.println("init failed");
+#else
+	;
+#endif
+}
+
+void loop()
+{
+    uint8_t buf[RH_ASK_MAX_MESSAGE_LEN];
+    uint8_t buflen = sizeof(buf);
+
+    if (driver.recv(buf, &buflen)) // Non-blocking
+    {
+	int i;
+
+	// Message with a good checksum received, dump it.
+	driver.printBuffer("Got:", buf, buflen);
+    }
+}