Zimin Wang
/
DDRO_Farrari
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Fork of
DDRO_Farrari
by 
Liangzhen Lai
Diff: clock.cpp
- Revision:
- 10:95e9932f7990
- Parent:
- 9:cbb692f51e0f
diff -r cbb692f51e0f -r 95e9932f7990 clock.cpp
--- a/clock.cpp Tue Feb 11 21:36:52 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,26 +0,0 @@
-#include "clock.h"
-
-float ext_freq(DigitalIn* clk_pin)
-{
- bool last = false;
- unsigned int count = 0;
-
- Timer t;
- t.start();
- for(int i=0; i<100000; i++){
- bool clkval = *clk_pin;
- if(clkval && !last){
- count++;
- }
- last = clkval;
- }
- float time = t.read();
- t.stop();
- if(count < 1000){
- dual_printf("Clk read inaccurate");
- pc.printf("Clk count %d\r\n", count);
- }
- //pc.printf("T: %f\r\nC: %i\r\n", time, count);
-
- return count / time;
-}
\ No newline at end of file