/*
?*?Test?program?for?divisor?calculation?using?reciprocal?division.
?*/
#include	
#include	
#include	
#include	

#include	“AD9959.h“

#define	INCR		0.000005	//?The?smaller?this?number?the?more?test?data?points
#define	MAXERR		0.08
#define	MAX_FREQ	（500*1000*1000）

bool	verbose?=?false;

class?MyAD9959
:?public?AD9959<
	2		//?ResetPin
	3		//?ChipEnablePin
	4		//?UpdatePin
	//?25000000?（reference_frequency）
	//?SPIRate?SPIClkPin?SPIMISOPin?SPIMOSIPin
>?{};

void?test_dividers（MyAD9959&?dds）
{
	int		count?=?0;
	int		low?=?0;
	int		high?=?0;
	uint32_t	last?=?1;
	uint32_t	freq?=?0;
	int		decade?=?2;
	int		pow10?=?10;
	double		two32?=?pow（2?32）;
	double		sum_of_squares_gen?=?0;
	double		sum_of_squares_acc?=?0;
	double		sum_of_squares_high?=?0;
	double		sum_of_squares_low?=?0;
	uint32_t	core_clock?=?MAX_FREQ;

#if	defined（CLOCK_MULTIPLIER）
	//?Test?with?a?reduced?clock?rate
	dds.setClock（CLOCK_MULTIPLIER）;	//?Half?the?core_clock?frequency
	core_clock?/=?（20/CLOCK_MULTIPLIER）;
#endif

	for?（double?freqr?=?10;?freqr?<=?core_clock/2;?freqr?*=?（1+INCR））
	{
		freq?=?floor（freqr+0.5）;
		if?（freq?==?last）
			continue;
		last?=?freq;

		if?（freq?>?pow10*10）
		{
			decade++;
			pow10?*=?10;
			printf（“Progress?to?%d:?%d?frequencies?tested?%d?low?%d?high?%d?bad\n“?pow10?count?low?high?count-low-high）;
		}

		uint32_t	divisor?=?dds.frequencyDelta（freq）;
		uint32_t	accurate?=?floor（two32*freq/core_clock?+?0.500）;
		double		fgen?=?1ULL*core_clock*divisor/two32;
		double		facc?=?1ULL*core_clock*accurate/two32;
		double		epsilon_gen?=?fgen-freq;?//?difference?between?desired?and?generated?reciprocal?method
		double		epsilon_acc?=?facc-freq;?//?difference?between?desired?and?generated?normal?method
		sum_of_squares_gen?+=?epsilon_gen*epsilon_gen;
		sum_of_squares_acc?+=?epsilon_acc*epsilon_acc;
		bool		bad?=?0;
		if?（fgen?>?freq）
		{
			sum_of_squares_high?+=?epsilon_gen*epsilon_gen;
			if?（fgen?				high++;
			else
				bad?=?1;
		}
		if?（fgen?		{
			sum_of_squares_low?+=?epsilon_gen*epsilon_gen;
			if?（fgen?>?freq-MAXERR）
				low++;
			else
				bad?=?1;
		}

		//?printf（“Wanted?%u?Gen?%0.4f?Acc?%0.4f?Epsilon?gen?%g?acc?%g\n“?freq?fgen?facc?epsilon_gen?epsilon_acc）;

		if?（verbose）
			printf（“%u?->?%u?for?%.4f?“?freq?divisor?fgen）;

		if?（divisor?==?accurate）
		{
			if?（verbose）
				printf（“good\n“）;
		}
		else
		{
			if?（verbose）
				printf（“expected?%u?（%s）\n“?accurate?bad???“bad“?:?“acceptable“）;
		}
		count++;
	}
	printf（“%d?frequencies?tested?%d?low?%d?high?%d?bad\n“?count?low?high?count-low-high）;
	printf（
		“Frequency?Standard?Deviation?using?reciprocal?method?%gHz?accurate?%gHz\n“
		sqrt（sum_of_squares_gen/count）
		sqrt（sum_of_squares_acc/count）
	）;
	printf（“Upward?deviation?%.5g\n“?sqrt（sum_of_squares_high/count））;
	printf（“Downward?deviation?%.5g\n“?sqrt（sum_of_squares_low/count））;
}

int
main（int?argc?const?char**?argv）
{
	MyAD9959	dds;

	if?（--argc?>?0?&

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
-----------?---------??----------?-----??----
?????目錄???????????0??2017-09-13?01:06??AD9959-master\
?????文件???????????7??2017-09-13?01:06??AD9959-master\.gitignore
?????文件???????15459??2017-09-13?01:06??AD9959-master\AD9959.h
?????文件????????6608??2017-09-13?01:06??AD9959-master\README.md
?????文件?????????322??2017-09-13?01:06??AD9959-master\keywords.txt
?????文件?????????243??2017-09-13?01:06??AD9959-master\library.json
?????文件?????????271??2017-09-13?01:06??AD9959-master\library.properties
?????目錄???????????0??2017-09-13?01:06??AD9959-master\test\
?????文件?????????474??2017-09-13?01:06??AD9959-master\test\Arduino.h
?????文件?????????435??2017-09-13?01:06??AD9959-master\test\SPI.h
?????文件??????????53??2017-09-13?01:06??AD9959-master\test\compile
?????文件????????3068??2017-09-13?01:06??AD9959-master\test\ddstest.cpp