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C6747和C6748感觉差不多,我想实现McASP发送中断方式控制音频信号,在轮询的例程基础上改的,轮询程序可以实现,但是中断一直实现不了,也找不到错误,求大神帮忙!下边是主要程序:
6 U, K q7 s$ z6 imain文件:
I$ k8 I( |' h' O: m* b' Ginterrupt void interrupt4(void)
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Uint32 sample;
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! o' J$ @ t8 y* d0 I sample = input_sample(); // read L + R samples from ADC
% g& B j; F7 u. K7 Y& @7 b output_sample(sample); // write L + R samples to DAC * n$ I: K1 ~ x( ]: O
return;
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5 U$ u" o0 D- t8 fint main( void )
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; D5 m+ I* r9 I9 Y H$ _1 J /* Initialize BSL *// t& `7 H' f- s1 h X8 V
EVMC6747_init( );$ e9 K# E# Q8 e# F
/* Call evmc6747_intr function */
6 W+ \1 p' H5 J/ X3 v1 L+ X# h aic3106_init( );/ D$ Y. Q, I! s2 z
while(1);
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aic3106_init文件的一部分,McASP配置部分,采用内部时钟,I2S方式,同步传输。音频芯片的配置应该没问题7 _. B$ r/ g- D' Z. z# t
/* Initialize MCASP1 */
. ?0 t( i" e6 V2 \1 j mcasp = &MCASP_MODULE_1;
' W4 U7 k3 D: i; ?, F* O9 u I' X/ L mcasp->regs->GBLCTL = 0; // Reset
" y5 O! ^$ U+ B0 e* `, F mcasp->regs->RGBLCTL = 0; // Reset RX
9 z+ P' x2 c+ W- k3 t0 T/ A B _ mcasp->regs->XGBLCTL = 0; // Reset TX
; }/ E) E. c" u8 u mcasp->regs->PWRDEMU = 1; // Free-running2 I! U9 i2 w# [' Q2 u
// configure McASP0 receive registers
9 a; l+ I/ ?; g mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
8 w# o; U, b# n6 ` mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
6 x( G2 \ v5 { mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
5 n0 P+ l( I! a8 i- z! A1 R/ G mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)% P, ~* }2 j' y
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
6 Q0 p. z- X8 A, Y4 B) F' b$ A mcasp->regs->RTDM = 0x00000003; // Slots 0,13 Q/ b" o8 M/ p* m. }
mcasp->regs->RINTCTL = 0x00000000; // Not used; O$ h( I; E; v" R( [4 }; n7 U& c5 D
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256; O. r; V! l& T
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used7 U+ } o' k) C0 \8 @
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus- s1 P: C7 p1 g) z, m' F o
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
) q6 C0 q$ n; {2 W8 ? mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
4 Y) j9 s2 [9 B- ]$ Y/ H" S mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
! f4 X* y- U" d mcasp->regs->XTDM = 0x00000003; // Slots 0,1
" _ n W8 L# K8 \ mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit9 w5 m3 a- v: z; Q- ]$ ^8 E* O
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2569 b, U. v1 h# J; S t8 d3 W1 k
) E5 n6 k3 e1 F$ y$ Q mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN$ d* _" D. _6 }# m% i4 B
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
! [' w# c ?6 C mcasp->regs->PFUNC = 0; // All MCASPs
1 V; N: \3 U# L5 Z: c mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used3 y: _ N) `% }. S4 Z
mcasp->regs->DLBCTL = 0x00000000; // Not used
4 j8 N c5 L" J: M# y mcasp->regs->AMUTE = 0x00000000; // Not used; C( j, r( K- b& a% k7 |2 |
% |6 O$ m1 ^3 ?9 i/* Starting sections of the McASP*/2 p' i7 V+ k1 h
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
' N" {% n5 K+ v% f while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
! @8 P2 ~- [3 [) ] mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; . L+ b( s- V6 m
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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9 j% S3 C: v2 c1 z5 H% n4 w mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 5 c X1 P, _4 Z& ], m' p/ i
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );9 I3 ?) w6 _8 a
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
( y) l5 Z: F( m- { while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );) S% o# E. _2 t: Y( {/ S2 q
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mcasp->regs->XSTAT = 0x0000ffff; ! c k0 {+ Z% C9 b! G0 p
mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
( g0 e9 p" K" K while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
' O* X$ W, G2 D! f3 U+ s mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
$ f/ B, ]* L! V2 q- E while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );& J# n& H+ L; D% x
1 T8 J% e7 ^( D- D8 _. E( W /* Write a 0, so that no underrun occurs after releasing the state machine */
) d7 w) g# z! [8 |7 t5 q+ c: {) @ mcasp->regs->XBUF5 = 0;
# P( C# B4 d* {7 R0 l* M mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
4 |0 b% d W, t% M% g( {; z9 I' @ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );6 N" A ?$ Z0 ^; S3 F# U8 v3 A# B! W
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; - B$ M$ V' }5 u r) g/ \" {( M% C
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );& X; Y2 L9 C/ |: c i6 e
4 H0 T3 ~$ U+ f# L ^" Y/ V6 O mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
- o2 ] J6 ^& ^* Z: J. O8 | while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
% `' F& ~" p: Q3 H' r- u mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
7 n( h* Y5 r+ j H* h8 F# b; \ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );% D) H. Z9 h- Y8 }9 K4 ]
% _" [* v/ N" M7 a6 v- X CSR = 0x0000;1 S2 d+ J# @4 ?
INTC_INTMUX1 = 0x3d;
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ICR = 0xFFF0;
& X2 K( l# d9 k$ [. z2 a- K IER |= 0x12;
! u+ K8 s* F% f; _+ Y6 ]) ]+ B9 N! n CSR |= 0x01; 0 Y8 b9 A& Z) a2 b! ~
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还有就是两个输入输出函数:# O- a+ M; D: i8 p$ Y9 k" _4 ~
void output_sample(Int32 out_data)
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# o( F$ \4 T3 @8 n9 U AIC31_data.uint = out_data;
. s; j$ A: l5 z+ V) c" W MCASP1_XBUF5_32BIT = AIC31_data.uint;
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+ z- F2 a+ C/ J& R0 D8 F& JInt32 input_sample(void)
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% Y$ K, S5 A: A6 {( H# Y AIC31_data.uint = MCASP1_RBUF0_32BIT;2 ^) M) d5 x' ]/ r
return (AIC31_data.uint);% j" U* ?1 t9 S1 z/ k2 f1 W
}
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