C????

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???? ? C????
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??

• ??ppt???????????C????SPCE061A????????
• ????ppt?????????

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??

• ??C????
• ??C????
• C???????
• ?C???????

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??C????
5
?C???????

• ??????????????????
• ??????????,?????????
• ?????????,????????

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?C?????????SPCE061A????

• IDE?????C???????,C???????????????????
• Software Libraries
• Standard C library
• Hardware library
• SACM ( Sunplus audio coding method)

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??C????
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unSP GCC?????????????
???? ????(bit) ??
char 16 -3276832767
short,int 16 -3276832767
long 32 -21474836482147483647
unsigned char 16 065535
unsigned short unsigned int 16 065535
unsigned long 32 04294967295
float,double 32 ?IEEE?????32????
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???????????

• char?unsigned char?16?
• ?????????GCC????????????
• float?double????32????
• unSP???float?double???32??64?????

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?????signed?unsigned

• ????signed?unsigned??????,???????????
• ????signed?unsigned??????????????,??signed?unsig
  ned,?????????????????,
• ????unsigned???
• ????,??????????????????????,????unsigned???

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????????

• unSP IDE?Turbo C??,?????????????,???
• i3printf("d,d",i,i) 

?? 4,3
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????
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C???????
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?????????

• C??????
• ????C??
• C???????

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C??????

• ????????????_???
• ??C???????????????_????
• ????????,????????(????)??????
• ?????16??????????R1??32???????????R1?R2??????R1?,
  ???R2??

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C????????
extern int ADD() int main(void) int i,j,SUM i2 j3 SUMADD(i,j) return 0 .CODE .PUBLIC _ADD _ADD.PROC PUSH BP TO SP BP SP 1 R1 BP3 //??????? R2 BP4 //??????? R1 R2 POP BP FROM SP RETF .ENDP
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????C???
EXTERNAL _ADD .RAM .VAR SUM .CODE .PUBLIC _main _main R1 3 PUSH R1 TO SP //?2??? //?? R1 2 PUSH R1 TO SP //?1??? //?? CALL _ADD SUMR1 SP2 //??SP?? .END
EXTERNAL _ADD .RAM .VAR SUM .CODE .PUBLIC _main _main R1 3 PUSH R1 TO SP //?2??? //?? R1 2 C?? int ADD(int i,int j) iij return i
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C???????

• ????????
• asm (??????????????)

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?????????????

• ?C?P_IOA_Dir??0x1234,????????????
• asm(.define P_IOA_Dir 0x7002)
• int main(void)
• asm("P_IOA_Dir 0" "r"(0x1234))

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?????????????

• ?P_IOA_Dir????????C????int??j? ,??????????
• asm(.define P_IOA_Dir 0x7002)
• int main(void)
• int j
• asm("0 P_IOA_Dir" "r"(j))

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?C???????
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???C????????

• define P_IOA_Dir (volatile unsigned int
  )0x7002
• int main(void)
• int j
• P_IOA_Dir0x1234
• j P_IOA_Dir

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?C??IO??

• //??A??????????
• P_IOA_Dir 0
• P_IOA_Attrib 0
• P_IOA_Data 0
•  
• //??B?????????
• P_IOA_Dir 0xffff
• P_IOB_Attrib 0xffff
• P_IOB_Data 0

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?C????????
PLL?? ???? 32K?? CPUclk??
b15b8 b7b5 b4 b3 b2b0

• define P_SystemClock (volatile unsigned int
  )0x7013
•  P_SystemClock System_Information
• System Information CPU Clock 32K Mode 32K
  Status Fosc

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?C????????

• CPU Clock??????????
• C_Fosc ? Fosc
• C_Fosc_Div_2 ? Fosc/2
• C_Fosc_Div_4 ? Fosc/4
• C_Fosc_Div_8 ? Fosc/8 (???)
• C_Fosc_Div_16 ? Fosc/16
• C_Fosc_Div_32 ? Fosc/32
• C_Fosc_Div_64 ? Fosc/64
• C_Sleep ? Stop (??)

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?C????????

• 32K Hz Mode ??????????
• C_StrongMode ?????
• C_AutoMode ????? (???)
• 32K Hz Sleep Status??????????
• C_32K_Work? ???,32K????? (??)
• C_32K_Off ? ???,32K??????

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?C????????

• Fosc??????????
• C_Fosc_24M ? 24.576M (???)
• C_Fosc_20M ? 20.480M
• C_Fosc_32M ? 32.768M
• C_Fosc_40M ? 40.960M
• C_Fosc_49M ? 49.152M

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?C????????

• ???????????????????????Fosc_CLK?CPU_CLK,??????????
  ??
• ????A???????????????
• ????Fosc_CLK?CPU_CLK???,??????????????

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?C????????

• ????
• include "SPCE061V004.H"
• void Delay()
• define Fosc_CLK_RATE C_Fosc_49M //Fosc
• define CPU_CLK_RATE C_Fosc_Div_2 //CPUClk

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?C????????

• main()
• unsigned int Fosc_CLK,CPU_CLK
• P_IOA_Dir 0x00FF // IOA 7..0 output
• P_IOA_Attrib 0x00FF
• P_IOA_Data 0

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?C????????

• Fosc_CLK Fosc_CLK_RATE
• CPU_CLK CPU_CLK_RATE
• P_SystemClock Fosc_CLKCPU_CLK

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?C????????

• while(1)
• P_IOA_Data 0x00FF //LED off
• Delay()
• P_IOA_Data 0 //LED on
• Delay()

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?C?????

• ?IDE162?,???????????(???????)???
• ?IDE180?,????????,??????C?????

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?C?????
C ASM ??
INT_OFF() int off ??????
INT_IRQ() int irq ???irq??
INT_FIQ() int fiq ???fiq??
INT_FIQ_IRQ() int fiq,irq ??fiq?irq??
IRQ_OFF() irq off ??irq??
IRQ_ON() irq on ??irq??
FIQ_OFF() fiq off ??fiq??
FIQ_ON() fiq on ??fiq??
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?C?????

• ????0.5s,?A??8???????
• ????0.5s??????????????SPCE061A???????????,?2Hz?4H
  z?8Hz?16Hz?32Hz?64Hz?128Hz?256Hz?512Hz?1024H?2048H
  z?4096Hz????????????????2Hz????????????????2Hz????
  ???,?????0.5s??????

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?C?????

• include SPCE061V004.H
• include unSPMACRO.h
• main()
• INT_OFF()
• P_IOA_Dir0x00FF
• P_IOA_Attrib0x00FF
• P_IOA_Data0x0000
• P_INT_CtrlC_IRQ5_2Hz//Setup interrupt
•   INT_IRQ()
•   while(1) P_Watchdog_Clear C_WDTCLR

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?C?????

• include "SPCE061V004.H"
• unsigned int g_uiOutput0x0000
• void IRQ5(void) __attribute__ ((ISR))
• void IRQ5(void)
• if(P_INT_CtrlC_IRQ5_2Hz)
• //IRQ5_2Hz
• P_IOA_Datag_uiOutput
• g_uiOutput 0xffff
• P_INT_ClearC_IRQ5_2Hz

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??

• ??????????,??????????????????????????????????
• ????,?AD?DA?Timer?UART?SIO?,??????????????????,???
  ??
• ????????C?SPCE061A???????,??????????(www.unsp.com.
  cn)??C????????????????

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