Weston and Ivan
Lights blink when a magnet is detected
Dependencies: mbed
Diff: main.cpp
- Revision:
- 0:f556205c07a6
- Child:
- 1:c847f1af2942
--- /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);
+ }
+}