//-----------------------------------------------------------------------------
//?F0xx_DACs_SineCosine.c
//-----------------------------------------------------------------------------
//?Copyright?2006?Silicon?Laboratories?Inc.
//?http://www.silabs.com
//
//?Program?Description:
//
//?This?program?outputs?sine?and?cosine?waveforms?using?the?hardware?DACs
//?on?the?C8051F005?microcontroller.??The?waveforms?are?output?on?pins?DAC0?
//?and?DAC1.
//
//?The?output?of?the?DAC?is?updated?upon?a?Timer3?interrupt.
//
//?The?frequency?of?the?output?waveforms?is?set?by?the?#define?.
//?To?achieve?the?exact?output?frequency?defined?by??an
//?external?crystal?should?be?used.
//
//?How?To?Test:?
//
//?1）?If?desired?populate?an?external?crystal?on?the?C8051F005-TB.??Change
//????the?#define?USB_EXT_OSC?and?#define?SYSCLK?to?reflect?using?the?crystal.
//????Also?verify?that?the?crystal?loading?capacitors?（C10?-?33pf?C11?-?33pf）
//????are?appropriate?for?the?crystal.
//?2）?Download?the?code?to?the?C8051F005?Development?Board
//?3）?Connect?two?oscillscope?probes?to?pins?DAC0?and?DAC1.??These?pins?are?
//????available?on?the?J2?header?on?pins?48?and?50?respectively.
//?4）?Run?the?code?and?confirm?that?there?are?two?waveforms?with?the?output?of?
//????DAC1?leading?the?output?DAC0?by?90?degrees.??The?frequency?of?both?
//????waveforms?should?be?close?to?frequency?defined?by?.
//
//?FID:????????????00X000015
//?Target:?????????C8051F0xx
//?Tool?chain:?????Keil?C51?7.50?/?Keil?EVAL?C51
//?????????????????Silicon?Laboratories?IDE?version?2.71
//?Command?Line:???Default
//
//?Release?1.0
//????-Initial?Revision?（GP）
//????-11?JUL?2006
//

//-----------------------------------------------------------------------------
//?Includes
//-----------------------------------------------------------------------------

#include??????????????????//?SFR?declarations

//-----------------------------------------------------------------------------
//?16-bit?SFR?Definitions?for?‘F02x
//-----------------------------------------------------------------------------

sfr16?TMR3RL???=?0x92;?????????????????//?Timer3?reload
sfr16?TMR3?????=?0x94;?????????????????//?Timer3
sfr16?DAC0?????=?0xd2;?????????????????//?DAC0?data
sfr16?DAC1?????=?0xd5;?????????????????//?DAC1?data

//-----------------------------------------------------------------------------
//?Global?Constants
//-----------------------------------------------------------------------------


#define?USE_EXT_OSC?????0??????????????//?0?=?use?internal?oscillator
???????????????????????????????????????//?1?=?use?external?oscillator


#if（USE_EXT_OSC?==?0）
?#define?SYSCLK??????????16000000??????//?Internal?oscillator?frequency?in?Hz
#endif

#if（USE_EXT_OSC?==?1）
?#define?SYSCLK??????????22118400??????//?External?oscillator?frequency?in?Hz
#endif

#define?SAMPLE_RATE_DAC?100000L????????//?DAC?sampling?rate?in?Hz

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????12437??2009-07-12?21:08??F005\F0xx_DACs_SineCosine.#1

?????文件??????12438??2009-07-12?21:06??F005\F0xx_DACs_SineCosine.#2

?????文件??????12437??2009-07-12?21:09??F005\F0xx_DACs_SineCosine.c

?????文件??????18373??2009-07-12?21:19??F005\F0xx_DACs_SineCosine.LST

?????文件???????6043??2009-07-12?21:19??F005\F0xx_DACs_SineCosine.OBJ

?????文件???????5900??2009-07-12?21:19??F005\sintest

?????文件?????????75??2009-07-12?21:19??F005\sintest.lnp

?????文件???????8594??2009-07-12?21:19??F005\sintest.M51

????.......??????1618??2009-07-12?21:46??F005\sintest.opt.bak

?????文件??????????0??2014-08-28?14:10??F005\sintest.plg

????.......??????2288??2009-07-12?21:46??F005\sintest.Uv2.bak

????.......?????70619??2014-08-28?14:10??F005\sintest.uvgui.Administrator

????.......??????7214??2014-08-28?14:10??F005\sintest.uvopt

????.......?????13689??2014-08-28?14:10??F005\sintest.uvproj

?????文件???????1065??2009-07-12?21:19??F005\sintest_Opt.Bak

?????文件???????2273??2009-07-12?21:19??F005\sintest_Uv2.Bak

?????文件???????6376??2007-09-12?14:52??F005\STARTUP.A51

?????文件??????14049??2009-07-12?21:19??F005\STARTUP.LST

?????文件????????749??2009-07-12?21:19??F005\STARTUP.OBJ

?????文件??????33168??2009-12-08?22:39??F005\test.wsp

?????文件????????141??2009-07-12?21:09??F005\tmp.out

?????目錄??????????0??2014-08-28?14:10??F005

-----------?---------??----------?-----??----

???????????????229546????????????????????22