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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:, R7 Y) n6 ?4 C2 T0 i$ Z
main文件:- C$ a, u1 W' Q2 |% ~
interrupt void interrupt4(void) / ^% c% l" Y9 s8 x; s% k4 q! q" L
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Uint32 sample;+ ^0 U- w8 C8 l$ x0 ~. s+ [" k
" n$ a! r: @- ]; I sample = input_sample(); // read L + R samples from ADC
7 C& x5 Q( _! H( j- p output_sample(sample); // write L + R samples to DAC 3 ^# W. U4 B4 c5 k
return;
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' ^% B7 p2 Q. N9 vint main( void )
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* ^5 u7 e$ x- M$ @7 [' E3 T /* Initialize BSL */
& ~+ c$ T$ ?/ I4 x! r EVMC6747_init( );( @! `, R+ ?7 E0 r9 t8 p* m
/* Call evmc6747_intr function */
! X( d' Q) O; \5 m; C' ` aic3106_init( );9 @1 b, u" Q. d. R6 e' m) v, k
while(1);/ C" N. |0 M8 F; l
}
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6 s9 K% K/ c) H [& f( Vaic3106_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 d( L; D1 B8 Z! R/* Initialize MCASP1 */
' A3 z G) e- L+ x# L! p mcasp = &MCASP_MODULE_1;
* X; p3 p5 W# @" a mcasp->regs->GBLCTL = 0; // Reset
% S& M# J, g) a; _# I. M D" U. G: f mcasp->regs->RGBLCTL = 0; // Reset RX3 i& h# v E1 N) R3 e( i
mcasp->regs->XGBLCTL = 0; // Reset TX5 h) W3 F9 w( }
mcasp->regs->PWRDEMU = 1; // Free-running" y3 h* }, Y7 @# M, j, }% C
// configure McASP0 receive registers) {$ f* M4 W8 C: b3 W! E0 C
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
0 D2 ^( e5 v6 N4 d mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus; h* n+ L* I- s/ K
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word ~8 S' b( U: s% }4 `( B4 k
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
5 K8 f- ^+ [( t; ^! k$ J mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)0 l/ e. p# T8 @3 |
mcasp->regs->RTDM = 0x00000003; // Slots 0,17 |' K. A8 q6 e5 R& d
mcasp->regs->RINTCTL = 0x00000000; // Not used5 J% v! e) k$ }8 ^9 c- Y
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2565 p, P. T. ?3 r8 D. ~" z. @6 }. I
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used, G" w1 Q0 M9 K) O
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus, f# n% ^" ]; p/ a- V
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
1 Z% e% w0 A+ U7 j mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16' q# N) M+ K4 `# H8 C
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
; D+ H6 T% X0 ~$ z& f4 n mcasp->regs->XTDM = 0x00000003; // Slots 0,1
& A* ~" B4 W! s& W mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
& m& O( a+ l4 ]3 _: b8 l, ~ mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2561 s* l, W+ r# q( `, h
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
. W6 i9 s3 d" C: s, M* ~ mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT1 X* z. ^. N. J
mcasp->regs->PFUNC = 0; // All MCASPs
- `% J# B, z5 c7 G5 L: Y1 ` mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1% M) S/ x5 M/ ] l/ G$ y
9 O0 N0 K3 a* d% H7 J mcasp->regs->DITCTL = 0x00000000; // Not used
( ]7 S2 q; [! q mcasp->regs->DLBCTL = 0x00000000; // Not used
$ s5 x! P; u% h- t K" m mcasp->regs->AMUTE = 0x00000000; // Not used* j. x- k. E9 H; _0 z& W1 C4 ~8 w
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/* Starting sections of the McASP*/
$ `: g& w6 ^* b5 c3 E* h8 v P mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
7 N# V! a! o. f" d5 H) l5 ]7 N while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); ; {% ]8 r, f" t) C# X5 Y
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 3 [; S, V+ J, G3 B
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );0 d7 d8 @; }5 S; W
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
: b9 b' e$ D. D3 R1 ^6 E while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );4 W) h7 S$ |: V) T X+ a6 {
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
v4 x: f9 ]$ P; V while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; 6 ]) g# g3 q5 X/ z* B3 Z0 A8 O/ p
mcasp->regs->RSTAT = 0x0000ffff;
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5 K& z O$ g: M3 h0 f; i mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
# \$ @# }- z+ |0 w% E while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );$ c: h3 ?& [+ g9 h1 q' n( w
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
6 P* Z" Y C% o" }# w, b0 ` while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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/* Write a 0, so that no underrun occurs after releasing the state machine */
& t1 A) j1 I. }* q/ v mcasp->regs->XBUF5 = 0;
A( X; N+ j9 N+ E: r( d: O! n& b mcasp->regs->RBUF0 = 0;/ d# X% I B% T' d9 e9 _0 K( L
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
$ E# G9 ~. ^: u- h% c0 ]9 ~ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
4 K" U4 R* @9 k0 E+ d mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
, N. f5 I' B4 Q/ R+ n3 Z/ n# @! B9 T while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );2 K/ G; H- d2 b. M0 @
* }0 ?4 g i# U mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
& b) x- v7 c( X4 L7 ^0 U* ?, F while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
$ s8 Q! E8 }4 L$ ]3 `6 S mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 5 L3 N, A4 b% p8 C
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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- _: h$ q" B( c3 T: n; h# X CSR = 0x0000;2 V. Z+ l$ w" |
INTC_INTMUX1 = 0x3d;
" A5 D! K. z0 [. q( B, J ISTP = (unsigned int)vectors;
3 V8 M: ?/ o8 a% [/ ^7 p ICR = 0xFFF0; ) d: R9 _: H5 y* {2 Z$ d
IER |= 0x12;
; O2 @# Z6 {+ |" l# P CSR |= 0x01;
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还有就是两个输入输出函数:
1 A9 [6 H. u# k7 Lvoid output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
: h0 N4 y- c" Z7 Q0 Y MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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7 T6 q7 ]8 j& I% C AIC31_data.uint = MCASP1_RBUF0_32BIT;
( Z" N' o) Z0 {* h0 s return (AIC31_data.uint);
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