Dan Hughes
First pass test/example code
Revision 0:d46c7e391377, committed 2014-04-24
- Comitter:
- hughesdt
- Date:
- Thu Apr 24 15:31:13 2014 +0000
- Commit message:
- Test/Example code for calculating Pi to 892 digits. Use timer to time the calculation. Serial to output to a terminal. And ticks to change the RGB LED color. Also commented out TSIsensor code to change the brightness of the LED
Changed in this revision
diff -r 000000000000 -r d46c7e391377 TSI.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TSI.lib Thu Apr 24 15:31:13 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/vsluiter/code/TSI/#4dc2f5a3a731
diff -r 000000000000 -r d46c7e391377 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Apr 24 15:31:13 2014 +0000
@@ -0,0 +1,92 @@
+#include "mbed.h"
+#include "TSISensor.h"
+
+//DigitalOut myled(LED_BLUE);
+Serial pc(USBTX, USBRX);
+//PwmOut led(LED_GREEN);
+//TSISensor tsi;
+PwmOut r (LED_RED);
+PwmOut g (LED_GREEN);
+PwmOut b (LED_BLUE);
+Ticker tick;
+Timer t;
+
+#define n 1000//1125
+#define len 10*n/3
+void colorswing(void);
+int main()
+{
+ int i, j, k, q, x, nines, predigit,digits,total;
+ int a[len];
+
+ r.period(0.0001);
+ g.period(0.0001);
+ b.period(0.0001);
+
+ tick.attach(&colorswing, 0.01);
+
+ pc.baud(115200);
+ pc.printf("\nStart Pi Generator!\n");
+ total=0;
+ while(1)
+ {
+ //myled = !myled;
+ t.start();
+ digits=0;
+ for (j=1;j<=len;j++)
+ a[j] = 2;
+ nines = 0;
+ predigit = 0;// {First predigit is a 0}
+ for (j=1;j<=n;j++)
+ {
+ q = 0;
+ for(i=len;i>0;i--)
+ {
+ x = 10*a[i] + q*i;
+ a[i] = x % (2*i - 1);
+ q = x / (2*i - 1);
+
+ }
+ a[1] = q % 10;
+ q = q / 10;
+ if (q == 9)
+ { nines++;}
+ else
+ { if (q == 10)
+ {
+ pc.printf("%d",predigit+1);
+ for (k=1;k<=nines;k++)// to nines do
+ pc.printf("0");// {zeros}
+ predigit = 0;
+ nines = 0;
+ }
+ else
+ {
+ pc.printf("%d",predigit);
+ predigit = q;
+ if (nines != 0)// then
+ {
+ for(k=1;k<=nines;k++)// do
+ pc.printf("9");
+ nines = 0;
+ }
+ }
+ digits++;digits+=nines;
+
+ }
+ }t.stop();
+ pc.printf("%d\r\nDigits=%d\r\nTotal=%d\r\nTimerRequired=%fsec\r\n",predigit,digits,++total,t.read());
+ //led = 1.0 - tsi.readPercentage();
+ t.reset();
+ }
+}
+
+void colorswing()
+{
+ static float p=0;
+ p += 0.003;
+ if(p>3)p=0;
+ r = 1.0 - ((p < 1.0) ? 1.0 - p : (p > 2.0) ? p - 2.0 : 0.0);
+ g = 1.0 - ((p < 1.0) ? p : (p > 2.0) ? 0.0 : 2.0 - p);
+ b = 1.0 - ((p < 1.0) ? 0.0 : (p > 2.0) ? 3.0 - p : p - 1.0);
+}
\ No newline at end of file
diff -r 000000000000 -r d46c7e391377 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Apr 24 15:31:13 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/6473597d706e \ No newline at end of file