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mbed toggles some pins ,transitions of 40nsec are measured between different pin changes .
Diff: main.cpp
- Revision:
- 0:f3b381f0568b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Jul 11 08:21:32 2011 +0000
@@ -0,0 +1,22 @@
+#include "mbed.h"
+
+DigitalOut red(p5);
+DigitalOut green(p6);
+DigitalOut blue(p7);
+DigitalOut flag(p8);
+int main() {
+ while (1) {
+ flag = !flag; // toggle pin 8 so we have a period indication....
+ // check period
+ red=1;// these transitions take about 40 nsec
+ blue=1;
+ green=1;
+ blue=0; //
+ green=0;//
+ red=0; //
+ red=1; // this transition is possibly too short for my analyser (24Msamples/sec= 40 nsec resolution ) to be seen
+ red=0; // ??
+
+ wait(0.001);
+ }
+}