Diff: main.cpp

Revision:

0:127d52afa7a9

Child:

1:3143ad629ed8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jun 22 12:59:06 2017 +0000
@@ -0,0 +1,55 @@
+/* 3pi Example 2
+
+(c) Dr Craig A. Evans, University of Leeds
+
+June 2017
+
+*/
+
+#include "mbed.h"
+#include "m3pi.h"
+
+// API objects
+m3pi buggy;
+AnalogIn pot_P(p15);
+
+// Function Prototypes
+void init();
+
+// Main Function
+int main()
+{
+    init();
+    
+    // move cursor to position (0,0) - top-left
+    buggy.lcd_goto_xy(0,0);
+    // print on the LCD - the number 5 is the number of characters in the string
+    buggy.lcd_print("Ex. 2",5);
+    
+    // we will update the motors 50 times per second
+    float dt = 1.0/50.0;
+
+    // main loop - this runs forever
+    while(1) {
+
+        // this returns a value in the range 0.0 to 1.0
+        float pot_P_val = pot_P.read();
+        
+        // change to -1.0 to 1.0
+        float motor_speed = 2.0*pot_P_val-1.0;
+        // this gives full-speed backward (-1.0) to full-speed forward
+        
+        // set the speed of the left and right motors
+        buggy.motors(motor_speed,motor_speed);
+        
+        // wait for a short time before repeating the loop
+        wait(dt);
+
+    }
+}
+
+// Functions
+void init()
+{
+    buggy.init();
+}
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