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authorStanley Huang <stanleyhuangyc@gmail.com>2013-11-29 23:13:36 +1100
committerStanley Huang <stanleyhuangyc@gmail.com>2013-11-29 23:13:36 +1100
commit5c4300402d931b2cb53db7214877d9b7e69a8416 (patch)
treef36dcf46b5d0459073a656368899eac0f76b247d /libraries/OBD/examples/rpm_led_i2c
parent94ddea4cfac60df45f48db3b25b0d9c62c066d94 (diff)
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update OBD-II library
Diffstat (limited to 'libraries/OBD/examples/rpm_led_i2c')
-rw-r--r--libraries/OBD/examples/rpm_led_i2c/rpm_led_i2c.ino31
1 files changed, 31 insertions, 0 deletions
diff --git a/libraries/OBD/examples/rpm_led_i2c/rpm_led_i2c.ino b/libraries/OBD/examples/rpm_led_i2c/rpm_led_i2c.ino
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+++ b/libraries/OBD/examples/rpm_led_i2c/rpm_led_i2c.ino
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+/*************************************************************************
+* Sample sketch based on OBD-II library for Arduino
+* Distributed under GPL v2.0
+* Copyright (c) 2012-2013 Stanley Huang <stanleyhuangyc@gmail.com>
+* All rights reserved.
+*************************************************************************/
+
+#include <Wire.h>
+#include <OBD.h>
+
+COBDI2C obd;
+
+void setup()
+{
+ // we'll use the debug LED as output
+ pinMode(13, OUTPUT);
+ // start communication with OBD-II UART adapter
+ obd.begin();
+ // initiate OBD-II connection until success
+ while (!obd.init());
+}
+
+void loop()
+{
+ int value;
+ if (obd.read(PID_RPM, value)) {
+ // RPM is successfully read and its value stored in variable 'value'
+ // light on LED when RPM exceeds 3000
+ digitalWrite(13, value > 3000 ? HIGH : LOW);
+ }
+}