Lu-Hsuan Chen / Mbed OS autocar_3sensor_mbed

An auto car with 3 IR sensors.

Dependencies:   Ping

Diff: main.cpp

Revision:
16:3202c73881a3
Parent:
15:1d440beb24d3
Child:
18:d7509436e9ef
--- a/main.cpp	Thu Jul 05 09:33:33 2018 +0000
+++ b/main.cpp	Fri Jul 06 05:18:18 2018 +0000
@@ -10,15 +10,15 @@
 // output used for controlling motors
 DigitalOut M1_enable(D6);
 DigitalOut M2_enable(D5);
-DigitalOut M1_in1(D3); // connected to left wheel
-DigitalOut M1_in2(D2); // connected to left wheel
-DigitalOut M2_in3(D1); // connected to right wheel
-DigitalOut M2_in4(D0); // connected to right wheel
+DigitalOut M1_in1(D3); // connected to left motor (IN1)
+DigitalOut M1_in2(D2); // connected to left motor (IN2)
+DigitalOut M2_in3(D1); // connected to right motor (IN3)
+DigitalOut M2_in4(D0); // connected to right motor (IN4)
 
 // input used for IR sensors
-extern AnalogIn leftIR(A1); // left sensor
-extern AnalogIn middleIR(A3); // middle sensor
-extern AnalogIn rightIR(A5); // right sensor
+AnalogIn leftIR(A1); // left sensor
+AnalogIn middleIR(A3); // middle sensor
+AnalogIn rightIR(A5); // right sensor
 
 // PID control params
 int values = 0;