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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>
5 X5 o6 p6 W# O7 H9 `( w#include "platform.h"
8 [, N; Y' r: I* P3 D3 u& V#include "xparameters.h"
* ^& C5 f+ V# s! S/ |#include "xgpio.h"& J; ^+ `8 i$ ?" i) z
#include "xintc.h"7 ^7 k z: {4 U$ |" e
#include "xtmrctr.h"* h$ a, Q/ U0 D2 f
#include "xil_exception.h"
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#define CH1 1
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7 U$ w }" i# {" Q" dXGpio LED;: m! _/ U# u% |5 X
XGpio SW;
' Y: T/ p% r. l: v( f' dXGpio KEY;# M- R, K: \4 E' N3 E
XIntc Intc;
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u8 count;
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! Q2 u) k6 l+ t [" l$ {% r1 n1 P9 f/************************** interrupt handler process****************************/
$ j/ |* f7 v% |2 Y: e/ Z% r. z- \void timer_int_handler(void *CallBackRef)
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unsigned int csr;' u# }5 e, u* |' W
csr = XTmrCtr_GetControlStatusReg(XPAR_AXI_TIMER_0_BASEADDR,0); // read control/status register
W" E4 ~( Q2 ?# H if(csr &XTC_CSR_INT_OCCURED_MASK)count++;6 C, r' W+ ^0 S( i, |& p
3 g I# e6 z+ E# a. k/ p XTmrCtr_SetControlStatusReg(XPAR_AXI_TIMER_0_BASEADDR,0, csr); //clear interrupt indication1 b5 p' }+ n: _ j3 C
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void SwHandler(void *CallbackRef)
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' g* z7 n) n- t4 s, S: g4 d/ X XGpio *GpioPtr = (XGpio *)CallbackRef;
/ j: \$ Q8 W! V/ A+ w' H5 U9 Q xil_printf("Switch Interrupt!\r\n");
. F1 N( E2 V' J // Clear the Interrupt* h1 q' Q* Y2 ]
XGpio_InterruptClear(GpioPtr, 1);( E1 ]. b; Z6 [ Y3 i: R \& x
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}
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5 \2 M; o* {* D, A; P: G- jvoid KeyHandler(void *CallbackRef)* j2 G' [+ L$ l0 A0 z) k
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XGpio *GpioPtr = (XGpio *)CallbackRef;8 ~8 H# F6 k& Y
xil_printf("Push_Button Interrupt!\r\n");8 n5 _$ `1 ~8 X$ T( N
// Clear the Interrupt" H' a4 K' s8 u8 b; D. }' R. e
XGpio_InterruptClear(GpioPtr, 1);
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}
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# A- G& V+ N* N# Ovoid print(char *str);
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int main()
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2 Q% A W% t" X* T4 u' D% i+ u init_platform();
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XGpio_Initialize(&LED, XPAR_LEDS_DEVICE_ID);6 a+ `8 P3 r( S
XGpio_Initialize(&SW, XPAR_DIP_SWITCHES_DEVICE_ID);5 l0 p, B' Z$ I& a& }5 w
XGpio_Initialize(&KEY, XPAR_PUSH_BUTTONS_DEVICE_ID);0 o" E$ ?* B/ w& ~# M+ ^& @
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XGpio_SetDataDirection(&LED, CH1, 0);
1 d9 S& L; K' s! w* z XGpio_SetDataDirection(&SW, CH1, 1);
5 C" j% ^" E5 _0 ` XGpio_SetDataDirection(&KEY, CH1, 1);
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XGpio_DiscreteWrite(&LED, CH1, 0xff); //all clear LEDS to off
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XIntc_Initialize(&Intc, XPAR_INTC_0_DEVICE_ID);$ w5 D% h+ B7 v1 a. H! a& u1 r
' A- w( \: S$ r. Q/ v# D4 S XIntc_Connect(&Intc, XPAR_MICROBLAZE_0_INTC_DIP_SWITCHES_IP2INTC_IRPT_INTR,9 Y, ~$ z! Z, D
(XInterruptHandler)SwHandler,
0 W& V1 C. j% T3 G$ { (void *)&SW);
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" Y5 I$ s$ w4 ]1 O6 V6 g XIntc_Connect(&Intc, XPAR_MICROBLAZE_0_INTC_PUSH_BUTTONS_IP2INTC_IRPT_INTR,
: a, y# R: j' U: c (XInterruptHandler)KeyHandler,( i; l* d- U! g7 E* g$ `0 c7 M
(void *)&KEY);
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XIntc_RegisterHandler(XPAR_INTC_0_BASEADDR, //register timer0 interrupt and handler process3 Q# a) `# S& D
XPAR_MICROBLAZE_0_INTC_AXI_TIMER_0_INTERRUPT_INTR,1 n" ]6 I9 ?; U" y
(XInterruptHandler) timer_int_handler,. U# k. D" U! B: {& V0 p9 B
(void *)XPAR_AXI_TIMER_0_BASEADDR);. g1 @) g3 Y7 E
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XTmrCtr_SetLoadReg(XPAR_AXI_TIMER_0_BASEADDR,0,50000000);
y& Q8 c& s% K. f XTmrCtr_EnableIntr(XPAR_AXI_TIMER_0_BASEADDR, 0);
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2 \& A# x( O- A. A XTmrCtr_SetControlStatusReg(XPAR_AXI_TIMER_0_BASEADDR, 0," J% @+ c# `, n
XTC_CSR_ENABLE_TMR_MASK |; i( h, k! I1 T" y
XTC_CSR_ENABLE_INT_MASK |
R; s% t4 d, f8 m1 D0 r XTC_CSR_AUTO_RELOAD_MASK |
+ G) c6 `0 l% T* k" z8 D& y XTC_CSR_DOWN_COUNT_MASK);
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4 j9 L* `0 g2 ~' L6 q3 Y j: b XIntc_Start(&Intc, XIN_REAL_MODE); //set MER enable IRQ to CPU' N1 D# n2 ^/ J& x# J
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XIntc_Enable(&Intc, XPAR_INTC_0_GPIO_2_VEC_ID); //set IER for push_buttons enable interrupt
/ z9 O* G+ j% [' t l1 N$ ~ XIntc_Enable(&Intc, XPAR_INTC_0_GPIO_0_VEC_ID); //set IER for switches enable interrupt
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' U0 O) M- i& ?, [7 G Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,# S' h; a/ e$ j, m$ Q7 W* U
(Xil_ExceptionHandler)XIntc_InterruptHandler,$ s* p9 F @ z3 x
&Intc);
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Xil_ExceptionEnable();
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XGpio_InterruptEnable(&KEY, CH1);
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XGpio_InterruptEnable(&SW, CH1);
% W- b7 H2 |5 z, Q& \+ V: Z& ] XGpio_InterruptGlobalEnable(&SW);
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$ u. l d$ W, y& r. _: w print("Hello World\n\r");
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while(1)
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2 k. f* ~& B/ I; [5 C0 E! y return 0;5 J1 n" s9 v) K s
}
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% i4 `0 Y; u* ?5 r7 `这个模式直接操作地址比建立一个实体来操作会快好多6 L7 Z" |; X4 K l1 T4 ~1 @" b0 l
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