Jovan Ivković
/
Newton_s_approximation_bench
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Revision 0:11c8121e645d, committed 2017-07-02
- Comitter:
- JovanEps
- Date:
- Sun Jul 02 17:31:48 2017 +0000
- Commit message:
- RC 1
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 Sun Jul 02 17:31:48 2017 +0000
@@ -0,0 +1,78 @@
+#include "mbed.h"
+//********************************************************
+//** ARM Cortex M7 MCU ******
+//** ST Nucleo-144 Stm32F746 and Stm32F767 MCU ******
+//** Newton's approximation - Benchmark based on ******
+//** Steve Curd Adruino IDE code ******
+//** Jovan Ivković - 2017. ******
+//** JovanEps (jovan.eps@gmail.com). ******
+//********************************************************
+
+DigitalOut myled(LED1);
+//DigitalOut PD13(PA_5); //introduce D13 pin-out
+DigitalIn PD8(PF_12); //introduce D8 *-Clear port
+Serial pc(USBTX, USBRX);
+Timer timer;
+
+#define ITERATIONS 10000000L // number of iterations 100k-10M
+#define FFLASH 1000000 // blink LED every 100k-1M iterations
+
+//#include <TM1638.h> // include the display library
+
+// TM1638 module(DIO, CLK, STB0)
+//TM1638 module(8, 9, 7);
+
+//*********************************
+//** MAIN block **
+//*********************************
+int main()
+{
+ while(true) {
+ unsigned long start, ttime;
+ unsigned long niter = ITERATIONS;
+ int LEDcounter = 0;
+ bool alternate = false;
+ long i, count = 0;
+ double x = 1.0;
+ double temp, pi = 1.0;
+
+ pc.printf(" \n Beginning %d",niter );
+ pc.printf(" \n iterations...");
+ pc.printf("\n");
+
+ timer.start();
+ start = timer.read_ms();
+
+ for ( i = 2; i < niter; i++) {
+ x *= -1.0;
+ pi += x / (2.0f * (float) i - 1.0f);
+ // /*
+ if (LEDcounter++ > FFLASH) {
+ LEDcounter = 0;
+ if (alternate) {
+ myled = 1;
+ alternate = false;
+ } else {
+ myled = 0;
+ alternate = true;
+ }
+ temp = (float) 40000000.0 * pi;
+
+ //module.setDisplayToDecNumber( temp, 0x80);
+ }
+ //*/
+ }
+ ttime = timer.read_ms() - start;
+
+ pi = (double) pi * 4.0;
+
+ pc.printf("# of trials = %d \n", niter);
+ pc.printf("\n\n");
+ pc.printf("Estimate of pi = %6.10f 10 \n" , pi);
+ pc.printf("Time: %d ms \n", ttime);
+ printf("state: %d \n", alternate);
+
+ timer.stop();
+ wait(1);
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sun Jul 02 17:31:48 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/99b5ccf27215 \ No newline at end of file