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howfast
mbed toggles some pins ,transitions of 40nsec are measured between different pin changes .
Revision 0:f3b381f0568b, committed 2011-07-11
- Comitter:
- bitman
- Date:
- Mon Jul 11 08:21:32 2011 +0000
- Commit message:
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 |
--- /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); + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Jul 11 08:21:32 2011 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e