Dominic Harg
Interrupt Uebungen
Revision 0:0256cd93b913, committed 2020-01-22
- Comitter:
- haunsi
- Date:
- Wed Jan 22 16:04:29 2020 +0000
- Commit message:
- Interrupt Uebungen
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r 0256cd93b913 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jan 22 16:04:29 2020 +0000
@@ -0,0 +1,68 @@
+#include "mbed.h"
+
+// DigitalOut eine Variable für ein Bit
+// BusOut eine Variable für eine ganze Bitgruppe
+// Alle 12-Leds des M0-Boards zu einer Bitgruppe zusammenfassen
+// LSB MSB
+// 2^0 2^1 2^2 2^11
+BusOut lb(P1_13,P1_12,P1_7,P1_6,P1_4,P1_3,P1_1,P1_0,LED4,LED3,LED2,LED1);
+// D20 D19 D18 D17 D16 D15 D14 D13 D4 D3 D2 D1
+
+// SW 1 SW 2 SW 3 SW 4
+// Bit0 Bit1 Bit2 Bit3
+BusIn btn(P0_10, P0_15, P0_23, P0_16);
+
+void OneRunLightStep();
+void OneRunLightStep2(); //Einen Schritt des Runlight's ausführen
+
+int prevSw3 = 0; //Schalterzustand so wie er bei der letzten Abfrage war
+
+//CheckButton() liefert nur dann 1 wenn eine Flanke am Button erkannt wurde
+int CheckButton()
+{
+ int ret = 0;
+ if( prevSw3==0 && (btn&4))
+ ret = 1;
+
+ else
+ ret = 0;
+ prevSw3 = (btn & 4); //alten Zustand merken
+ return ret;
+}
+
+int main()
+{
+ lb = 1;
+ while(1)
+ {
+
+ if (CheckButton())
+ {
+ OneRunLightStep();
+ }
+ }
+}
+
+int gCnt = 0;
+void OneRunLightStep()
+{
+ lb = lb << 1;
+ gCnt++;
+ if(gCnt > 11)
+ {
+ lb = 1;
+ gCnt = 0;
+ }
+}
+void OneRunLightStep2()
+{
+ if(lb == 0)
+ {
+ lb = 1;
+ }
+ else
+ {
+ lb = lb << 1;
+ }
+}
+
diff -r 000000000000 -r 0256cd93b913 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Jan 22 16:04:29 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file