Ivan Chavez / Mbed 2 deprecated EW202FP_Hall

Lights blink when a magnet is detected

Dependencies:   mbed

Diff: main.cpp

Revision:
0:f556205c07a6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 29 17:16:18 2019 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+Serial pc(USBTX,USBRX);
+
+// Hall effect sensor
+DigitalIn hall(p21);
+DigitalOut hallpwr(p22);
+
+InterruptIn event(p21);
+DigitalOut led1(LED1);
+DigitalOut led4(LED4);
+
+int hallvalue;
+int hallstatus=0;
+void trigger()
+{
+    while (hallstatus!=0) {
+        led1=1;
+        wait(1);
+        led1=0;
+        hallstatus=0;
+    }
+}
+int main()
+{
+    hall.mode(PullUp);
+    hallpwr=0;
+    wait(0.2);
+    hallpwr =1;
+    wait(0.2);
+    event.rise(&trigger);
+    while(1) {
+        hallvalue=hall.read();
+        if (hallvalue==1) {
+            hallstatus=1;
+        }
+        pc.printf("hallvalues:%d\n\r",hallvalue);
+        wait(0.25);
+    }
+}