From 8c2b5b979a75d109ae7cc306afc50d7ffe1e0366 Mon Sep 17 00:00:00 2001
From: Cristian Maglie <c.maglie@bug.st>
Date: Wed, 4 Jan 2012 15:14:51 +0100
Subject: Moved libraries folder inside platform folder. Now libraries and
examples are searched per board/platform
---
.../examples/SFRRanger_reader/SFRRanger_reader.ino | 87 ++++++++++++++++++++++
1 file changed, 87 insertions(+)
create mode 100755 libraries/Wire/examples/SFRRanger_reader/SFRRanger_reader.ino
(limited to 'libraries/Wire/examples/SFRRanger_reader')
diff --git a/libraries/Wire/examples/SFRRanger_reader/SFRRanger_reader.ino b/libraries/Wire/examples/SFRRanger_reader/SFRRanger_reader.ino
new file mode 100755
index 0000000..9c41c18
--- /dev/null
+++ b/libraries/Wire/examples/SFRRanger_reader/SFRRanger_reader.ino
@@ -0,0 +1,87 @@
+// I2C SRF10 or SRF08 Devantech Ultrasonic Ranger Finder
+// by Nicholas Zambetti <http://www.zambetti.com>
+// and James Tichenor <http://www.jamestichenor.net>
+
+// Demonstrates use of the Wire library reading data from the
+// Devantech Utrasonic Rangers SFR08 and SFR10
+
+// Created 29 April 2006
+
+// This example code is in the public domain.
+
+
+#include <Wire.h>
+
+void setup()
+{
+ Wire.begin(); // join i2c bus (address optional for master)
+ Serial.begin(9600); // start serial communication at 9600bps
+}
+
+int reading = 0;
+
+void loop()
+{
+ // step 1: instruct sensor to read echoes
+ Wire.beginTransmission(112); // transmit to device #112 (0x70)
+ // the address specified in the datasheet is 224 (0xE0)
+ // but i2c adressing uses the high 7 bits so it's 112
+ Wire.write(byte(0x00)); // sets register pointer to the command register (0x00)
+ Wire.write(byte(0x50)); // command sensor to measure in "inches" (0x50)
+ // use 0x51 for centimeters
+ // use 0x52 for ping microseconds
+ Wire.endTransmission(); // stop transmitting
+
+ // step 2: wait for readings to happen
+ delay(70); // datasheet suggests at least 65 milliseconds
+
+ // step 3: instruct sensor to return a particular echo reading
+ Wire.beginTransmission(112); // transmit to device #112
+ Wire.write(byte(0x02)); // sets register pointer to echo #1 register (0x02)
+ Wire.endTransmission(); // stop transmitting
+
+ // step 4: request reading from sensor
+ Wire.requestFrom(112, 2); // request 2 bytes from slave device #112
+
+ // step 5: receive reading from sensor
+ if(2 <= Wire.available()) // if two bytes were received
+ {
+ reading = Wire.read(); // receive high byte (overwrites previous reading)
+ reading = reading << 8; // shift high byte to be high 8 bits
+ reading |= Wire.read(); // receive low byte as lower 8 bits
+ Serial.println(reading); // print the reading
+ }
+
+ delay(250); // wait a bit since people have to read the output :)
+}
+
+
+/*
+
+// The following code changes the address of a Devantech Ultrasonic Range Finder (SRF10 or SRF08)
+// usage: changeAddress(0x70, 0xE6);
+
+void changeAddress(byte oldAddress, byte newAddress)
+{
+ Wire.beginTransmission(oldAddress);
+ Wire.write(byte(0x00));
+ Wire.write(byte(0xA0));
+ Wire.endTransmission();
+
+ Wire.beginTransmission(oldAddress);
+ Wire.write(byte(0x00));
+ Wire.write(byte(0xAA));
+ Wire.endTransmission();
+
+ Wire.beginTransmission(oldAddress);
+ Wire.write(byte(0x00));
+ Wire.write(byte(0xA5));
+ Wire.endTransmission();
+
+ Wire.beginTransmission(oldAddress);
+ Wire.write(byte(0x00));
+ Wire.write(newAddress);
+ Wire.endTransmission();
+}
+
+*/
--
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