Diff: main.cpp

Revision:

0:2b952ccae54d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Aug 17 10:14:44 2010 +0000
@@ -0,0 +1,46 @@
+// Example running the mbed Tickers at a lower priority
+
+#include "mbed.h"
+
+volatile int counter = 0;
+void timing_critical() {
+    counter++;
+}
+
+void long_event() {
+    wait_ms(50);
+}
+
+PwmOut out(p25);
+InterruptIn in(p26);
+Ticker tick;
+
+int main() {
+    out.period_ms(10);
+    out.pulsewidth_ms(5);
+    in.rise(&timing_critical);
+
+    printf("1) InterruptIn only...\n");    
+    for(int i=0; i<5; i++) {
+        counter = 0;
+        wait(1);
+        printf("counts/sec = %d\n", counter);
+    }
+
+    tick.attach(&long_event, 0.1);    
+    
+    printf("2) InterruptIn plus long running occasional ticker event...\n");    
+    for(int i=0; i<5; i++) {
+        counter = 0;
+        wait(1);
+        printf("count/sec = %d\n", counter);
+    }
+    
+    printf("3) InterruptIn plus long running occasional ticker event at lower priority...\n");    
+    NVIC_SetPriority(TIMER3_IRQn, 255); // set mbed tickers to lower priority than other things
+    for(int i=0; i<5; i++) {
+        counter = 0;
+        wait(1);
+        printf("counter = %d\n", counter);
+    }
+}