Applied engineering Team
Digitalni ulazi i izlazi mogu se korištenjem komponente BusInOut grupirati u skup bitova (riječ odgovarajućeg broja bitova) neovisno o tome gdje su i u kojem redoslijedu definirani ulazno-izlazni priključci. Pri tom se funkcijom mode može zadati da se uključe „PullUp“ otpornici na tim pinovima.Naredbom 'inputSW.mode(PullUp); ' uključuju se interni otpornici prema +3,3V. Stanje ulazne varijable testira se naredbom 'switch(inputSW) '.
Dependencies: mbed
Diff: main.cpp
- Revision:
- 0:876b302338ae
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Apr 26 19:14:30 2015 +0000
@@ -0,0 +1,35 @@
+/*
+Kontrola ledica pomocu 4 prekidaca i funkcije BusInOut
+link na handbook za BusInOut:
+http://developer.mbed.org/handbook/BusInOut
+*/
+#include "mbed.h"
+
+DigitalOut redled(p5);
+DigitalOut greenled(p6);
+
+BusInOut inputSW(p7, p8, p9, p10);
+
+int main() {
+ inputSW.mode(PullUp); // Pull up internal resistor
+ while(1) {
+ switch(inputSW) {
+ case 0x1:
+ greenled = 1; //green led is on
+ redled = 0; //red led is off
+ break;
+ case 0x2:
+ greenled = 0; //green led is off
+ redled = 1; //red led is on
+ break;
+ case 0x4:
+ case 0x8:
+ greenled = 1; //green led is on
+ redled = 1; //red led is on
+ break;
+ default :
+ greenled = 0; //green led is off
+ redled = 0; //red led is off
+ }
+ }
+}
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