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本帖最后由 kenson 于 2019-10-6 17:12 编辑
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#include <stdio.h>
1 H% H6 o" R5 q6 z, ^# y1 ]. p! Q#include "platform.h"
7 C4 e% p( Z6 l" {#include "xparameters.h"7 h, |( w8 Z; f o7 o: [
#include "xgpio.h"
& l( I. A# z* m" ]4 z1 `#include "xintc.h"
" t; H, O2 X9 P#include "xtmrctr.h"
) V1 R" B7 [0 _+ ?6 A#include "xil_exception.h"
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#define CH1 1
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3 ^2 i1 a+ `. P6 S) E7 j& s, vXGpio LED;6 M6 V* _6 e7 r9 w8 R8 P
XGpio SW;
( t# u/ L+ w4 E3 _+ d1 D8 r nXGpio KEY;' }9 o0 P. m6 f' S# q# u' T- ]
XIntc Intc;5 ?8 r3 {: `# }& l
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u8 count;
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/************************** interrupt handler process****************************/
. M' ^2 H5 I6 K1 d/ pvoid timer_int_handler(void *CallBackRef)7 R. `- @! p( S5 v9 y
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unsigned int csr;
' b- G$ g6 R) G5 x, G csr = XTmrCtr_GetControlStatusReg(XPAR_AXI_TIMER_0_BASEADDR,0); // read control/status register* W# f4 i" H; a+ S5 n+ v
if(csr &XTC_CSR_INT_OCCURED_MASK)count++;( Q% n. X5 F& ^# g2 J9 `% q9 |
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XTmrCtr_SetControlStatusReg(XPAR_AXI_TIMER_0_BASEADDR,0, csr); //clear interrupt indication
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5 Q% s3 ~7 V; P7 ^2 Bvoid SwHandler(void *CallbackRef)9 B) D/ q2 P* e
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XGpio *GpioPtr = (XGpio *)CallbackRef;5 ]! n2 G+ X( \5 _
xil_printf("Switch Interrupt!\r\n");! V+ X4 v4 v1 L" ]$ F- U0 R% D
// Clear the Interrupt) d; C! t( s; }
XGpio_InterruptClear(GpioPtr, 1);% S% r4 q, Y% `0 W" B
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, U- B- [% f2 Avoid KeyHandler(void *CallbackRef)$ F3 S' Z& Q% Y6 a8 E a9 T" P% Y
{
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XGpio *GpioPtr = (XGpio *)CallbackRef;
( _5 M% F4 N' A) g( j xil_printf("Push_Button Interrupt!\r\n");
2 c/ h9 o0 Z; M, ?* n( T. g9 }; f // Clear the Interrupt
8 d! ]9 Z, M$ ?( ]# ^ XGpio_InterruptClear(GpioPtr, 1); L9 q+ j4 G$ ^7 [" n6 z* {# C0 g
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}
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5 T7 {( R4 V) T; s' `& lvoid print(char *str);
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int main(): F- A" C; w) f. o2 ^) X6 h$ y! F
{
" \9 R+ {9 w# \3 R" | init_platform();5 d w+ c% c. W4 {
/ f# ^* u% s' w9 l XGpio_Initialize(&LED, XPAR_LEDS_DEVICE_ID);; { w* \( K& X- w& X
XGpio_Initialize(&SW, XPAR_DIP_SWITCHES_DEVICE_ID);% `$ K7 K( s! K- Q. k+ j9 {5 x
XGpio_Initialize(&KEY, XPAR_PUSH_BUTTONS_DEVICE_ID);
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XGpio_SetDataDirection(&LED, CH1, 0);2 x# }% R) `: h
XGpio_SetDataDirection(&SW, CH1, 1);# d, g7 ?1 ]( e6 a8 c7 x
XGpio_SetDataDirection(&KEY, CH1, 1);
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8 \! l4 |7 V/ ]9 ?2 y# J% d5 V3 X% Q XGpio_DiscreteWrite(&LED, CH1, 0xff); //all clear LEDS to off+ j) c* ]1 R5 a
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XIntc_Initialize(&Intc, XPAR_INTC_0_DEVICE_ID);( W, w3 F. h" [0 j, |
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XIntc_Connect(&Intc, XPAR_MICROBLAZE_0_INTC_DIP_SWITCHES_IP2INTC_IRPT_INTR,
% T9 D) O; N! [% a8 S$ R (XInterruptHandler)SwHandler,8 X! t/ ~; R2 N) R
(void *)&SW);& j* l5 y7 v i% B3 _% _* s1 Z8 q
; R/ l, X7 r0 f; f# _( s XIntc_Connect(&Intc, XPAR_MICROBLAZE_0_INTC_PUSH_BUTTONS_IP2INTC_IRPT_INTR,
# I+ j+ ?9 _8 t& u (XInterruptHandler)KeyHandler,2 @, o1 l5 X9 l: ~& b5 k
(void *)&KEY);
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2 Z) `2 I+ w( z XIntc_RegisterHandler(XPAR_INTC_0_BASEADDR, //register timer0 interrupt and handler process
* H X3 z. \( F! _/ r6 k XPAR_MICROBLAZE_0_INTC_AXI_TIMER_0_INTERRUPT_INTR,
7 L+ I. z L- C1 k (XInterruptHandler) timer_int_handler,. @6 _, X/ _1 i, v+ v3 h
(void *)XPAR_AXI_TIMER_0_BASEADDR);
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XTmrCtr_SetLoadReg(XPAR_AXI_TIMER_0_BASEADDR,0,50000000);
2 \ t' q6 F* G+ y- ` XTmrCtr_EnableIntr(XPAR_AXI_TIMER_0_BASEADDR, 0);
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XTmrCtr_SetControlStatusReg(XPAR_AXI_TIMER_0_BASEADDR, 0,1 ^$ l6 l7 h! i& f( N
XTC_CSR_ENABLE_TMR_MASK |
. a; h0 @$ A3 g XTC_CSR_ENABLE_INT_MASK |
+ O3 ~7 f3 ?' B" B2 @# _, {3 o2 u5 M XTC_CSR_AUTO_RELOAD_MASK |8 N( G/ |% F* K8 S* L3 K- _. k
XTC_CSR_DOWN_COUNT_MASK);% b U, p; v$ K T. f
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& i. _/ j4 F- c& ]$ p XIntc_Start(&Intc, XIN_REAL_MODE); //set MER enable IRQ to CPU
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( ?8 G; C! Y# f9 w/ Z& n XIntc_Enable(&Intc, XPAR_INTC_0_GPIO_2_VEC_ID); //set IER for push_buttons enable interrupt4 p, i* g9 D, ?
XIntc_Enable(&Intc, XPAR_INTC_0_GPIO_0_VEC_ID); //set IER for switches enable interrupt4 r: ?' Y' t% `; m: k
( v$ B5 A% m7 Z: ~3 c9 S Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,. W$ \9 H+ f c! D2 I& v! J ]7 d
(Xil_ExceptionHandler)XIntc_InterruptHandler,7 F4 `- A! P* O
&Intc);. x( i) k: }. {* b9 h( U
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Xil_ExceptionEnable();
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XGpio_InterruptEnable(&KEY, CH1);5 E8 g3 c3 n w; N3 W
XGpio_InterruptGlobalEnable(&KEY);. ^7 T8 Y4 O$ d
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XGpio_InterruptEnable(&SW, CH1);
6 B% x) R# v4 S3 F2 H" t XGpio_InterruptGlobalEnable(&SW);
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9 d* ]* |$ Q2 ^1 s# C: A8 c# v& F print("Hello World\n\r");
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% S4 y0 T5 |( H3 C- J while(1)- T* W5 Y4 Z* V/ n K
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return 0;
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: ]- z3 |) E, x) U3 J这个模式直接操作地址比建立一个实体来操作会快好多& P9 r5 F3 D6 Z
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