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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:3 `. H9 B/ Y& R+ Z0 [3 K* V( V6 G, c
main文件:$ O' j1 A- A" x
interrupt void interrupt4(void)
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Uint32 sample;
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$ n1 r) \( D+ S/ a! l sample = input_sample(); // read L + R samples from ADC
9 t: h# s, e0 i; I& O+ ~ output_sample(sample); // write L + R samples to DAC
8 e2 e% E( e" u5 a9 t return;7 i* Q1 }! ?* v0 `* D& J* d
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* V$ U. Z: [" f+ x8 x' t) Zint main( void )2 v% u: ?' b0 O! H
{
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/* Initialize BSL */9 M0 X1 B8 P7 ?- @3 ^5 A E
EVMC6747_init( );
6 Q& u) x& y: q% H8 L9 X5 k# B /* Call evmc6747_intr function */; E0 v6 f! g# p
aic3106_init( );( t/ Q! l, D1 N+ [. _# W$ u
while(1);" l# ^3 {( O' k5 z x
}
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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2 y' N3 j% P$ x" F& w2 [9 z
/* Initialize MCASP1 */, [; I# S# D7 x
mcasp = &MCASP_MODULE_1;
3 s* W0 H7 M/ }1 Y: k% r mcasp->regs->GBLCTL = 0; // Reset% R0 ~. H, t9 q. I. R
mcasp->regs->RGBLCTL = 0; // Reset RX/ h1 _4 s: I; z3 z, N
mcasp->regs->XGBLCTL = 0; // Reset TX6 p$ @ q. j& v
mcasp->regs->PWRDEMU = 1; // Free-running
5 |) I/ @, L* X1 A& Z // configure McASP0 receive registers7 ^. Q$ ^% x$ }$ H; ?! s
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
! i2 f, U4 g4 @$ [# `( x mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus6 ~" `$ S" Z5 P* e5 r1 Y' d% ]% w8 K
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
' A7 K P( Q* G8 L3 H mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
0 W( N/ o$ n; e mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
8 Q A% [* ~- v, v: V mcasp->regs->RTDM = 0x00000003; // Slots 0,19 I0 S; n) z9 i3 r7 }2 E
mcasp->regs->RINTCTL = 0x00000000; // Not used0 X! U7 c/ l v4 l: c8 s
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used. L% l1 [; Q6 t4 L1 l3 @
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus- h& G7 n4 }% K; R4 A+ ? s
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
6 Y \6 ]+ i+ l1 D! W mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16& h+ V, n% b" N
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
4 U9 n- W. y8 n! A/ @ mcasp->regs->XTDM = 0x00000003; // Slots 0,11 \- \" O G( a4 w4 K9 I
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
" H" g, }; a! ` mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256; G4 H$ \% F! B0 j) c0 S; [2 X: B7 _
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN, c$ A) d+ X5 E+ f
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
% n E: x% r& n$ A( d& n# k/ ?1 ? mcasp->regs->PFUNC = 0; // All MCASPs
D2 G9 n4 n: ? b* ^ mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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+ q' D, X1 n$ @5 B$ Y* s mcasp->regs->DITCTL = 0x00000000; // Not used7 v) l5 J' c2 `7 L
mcasp->regs->DLBCTL = 0x00000000; // Not used9 g3 R. Y2 y( A
mcasp->regs->AMUTE = 0x00000000; // Not used
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' k0 I8 ~" ]. E5 {7 W5 S/* Starting sections of the McASP*// C6 r7 `5 X* X% i
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; $ b9 j- U; m, Y, w/ v2 h3 j( v- C
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 1 Y) J! I# j6 Q, w- V! r
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
) k% ]: Q# {7 G1 z# [( p while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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8 F7 Q* v0 C" Z6 a s mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
; W7 k, _) G5 n) \* p8 m. E k while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );5 A$ T2 g" o5 r
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
/ Y7 h. ^2 g7 K/ p( }' a while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff;
1 B' ?" L) N1 y! K* w mcasp->regs->RSTAT = 0x0000ffff; & z' S3 H# J& @5 R$ x
5 R# H0 k) p% P! o0 F; H& a9 Z mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
8 j' |; K P4 z& Y0 v' r" y while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
$ x/ K, H0 q* O/ S2 Z mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; , `4 N& S3 S: F
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );& _3 }* f4 i/ k& x. _
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/* Write a 0, so that no underrun occurs after releasing the state machine */ ^) L1 e1 z* n/ E, E
mcasp->regs->XBUF5 = 0;
' C5 v$ h, D. \ N6 |. Q" K0 k mcasp->regs->RBUF0 = 0;6 A8 t& V3 W( g8 D4 U( O
) T, k; k$ F3 k mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; ( G+ p M9 M! @' S% I
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
' m( I. U# d! h# G ] mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; 9 q6 I) t, g2 W2 T d; J$ B
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
! O& U* r5 L6 Y: M while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
2 i3 W3 h( D% b' E: r6 }$ d9 Z7 h mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
$ Q+ o& x- z$ n$ {4 o. p0 }7 N' k while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000;
+ S; _3 S# M4 R, N/ A' L$ Z INTC_INTMUX1 = 0x3d;
* o- D: m" r E5 y- l4 A ISTP = (unsigned int)vectors;
' J: }5 @* h q; h9 @$ @ ICR = 0xFFF0; 5 A, D* [3 ?0 g; c. H% o7 ]: c
IER |= 0x12;
" S5 n p I$ v$ Z2 }6 y6 J7 L CSR |= 0x01; . W2 n: w. S R0 \& }$ R7 f. q$ y
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; Z1 P9 O( ^3 f" x- }" z8 ^( r还有就是两个输入输出函数:
% K4 e' W; @6 f3 E% r& Q4 i8 ivoid output_sample(Int32 out_data)" U! Y' D# {, _! l7 p# X
{
; V4 C# c3 x2 ^& g! |% y AIC31_data.uint = out_data;
5 E. l5 [6 S: M' O: o+ N MCASP1_XBUF5_32BIT = AIC31_data.uint;0 J& u9 T7 t! W0 V+ K
}
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( b( O: `9 l9 w4 @/ r# z" Q/ C6 VInt32 input_sample(void)! X8 M3 G% ~3 n$ x) f, l
{
' a: S9 Z! N. t AIC31_data.uint = MCASP1_RBUF0_32BIT;
* D \$ _! G( A+ D return (AIC31_data.uint);7 ]7 H- X) S8 {6 l! t
}
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