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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 [6 T1 V# h/ e2 j' y1 Cmain文件:
- ?: n) R" F3 winterrupt void interrupt4(void) 0 S7 O$ m% \- @' R) u6 _
{
* x( h# N5 W: H1 v/ u Q0 m Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC
Z5 O I6 n! A1 E1 _4 J output_sample(sample); // write L + R samples to DAC
6 \4 c" |# ?0 P return;8 t: C5 i9 N2 D6 g3 r6 j! Q$ q
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int main( void )) {& } ]* U/ d
{
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* ?; B+ H' b }& w% ]1 g' Y$ ~ /* Initialize BSL */ l, e! w# P x8 ` C! E1 T
EVMC6747_init( );2 v$ m' |8 T X+ x' _7 k9 j
/* Call evmc6747_intr function */
4 A+ t2 H( _" J% s- r aic3106_init( );
: S2 Q8 g" c0 l while(1);. M& L3 x) d0 x+ p
}
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. y9 W& R; ?$ Q. Waic3106_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
; _8 Z0 F5 c: _$ l/* Initialize MCASP1 */8 _' b' s+ b0 u3 T* [
mcasp = &MCASP_MODULE_1;( q' h9 t/ z, B* U
mcasp->regs->GBLCTL = 0; // Reset9 y( n0 z5 H& x
mcasp->regs->RGBLCTL = 0; // Reset RX
0 ^" B2 M q5 h; m mcasp->regs->XGBLCTL = 0; // Reset TX! N5 p. w1 ^/ H& B9 B
mcasp->regs->PWRDEMU = 1; // Free-running
" ^2 ?3 m1 Y7 L' }) e // configure McASP0 receive registers, w( d' d7 Q& d! i2 E8 C
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
U) Q$ \# v2 N' C) u' {) ]1 S mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus% j" O, r6 ]1 `6 i
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word( a( J+ U; U2 _. W
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)8 e) h* n C. {, \& r
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
* k0 G) l% z$ B( ~9 @ mcasp->regs->RTDM = 0x00000003; // Slots 0,1
! b5 M6 C+ A+ k! M$ B mcasp->regs->RINTCTL = 0x00000000; // Not used* t+ e, ^' p( b2 J
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256& S/ ]" v' O4 A9 ^! X
3 h( `0 h/ t) V& h' L9 N5 ~ mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
( S# D9 F! f& U. l3 f2 S5 m mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
8 N7 b) f6 h3 u7 u mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word3 d2 D' o$ \$ V( r" [, v
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
& z6 l* ~* j) y: L8 S; k mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
. ^: q0 F) K! G( b, M" A: A mcasp->regs->XTDM = 0x00000003; // Slots 0,1
; H% r6 U: P7 E" I/ {$ t mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
/ O; K/ D! O0 e" d, d! \# u: M+ S+ M mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN* m; p- V9 r, t0 T) j* D) M% _
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT1 i# f! P' W: Y
mcasp->regs->PFUNC = 0; // All MCASPs7 T: I5 N' R& m3 ^2 O
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used; s3 ^/ \* Z) x) x9 y/ X1 {
mcasp->regs->DLBCTL = 0x00000000; // Not used# t( r& A" Z* m- E) l1 g5 G7 p
mcasp->regs->AMUTE = 0x00000000; // Not used
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3 Z- [, `6 l7 y9 c7 G2 n1 h' y/* Starting sections of the McASP*/& l6 i( \, \0 o5 k( `# c7 d2 y: {6 {5 o
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 7 j3 O P# Z% `' L
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); ) c) m6 y% G5 I) _
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; % o* K( x0 b' g( V
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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- `" I( B# E9 [- N0 o) s mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 6 n8 q) _7 N# a6 [
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
! H N% g2 `4 y mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
+ q- R' X" g4 w: _8 ?/ c6 j while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; 0 i" b1 j1 ^) v5 r- X6 w& g# N
mcasp->regs->RSTAT = 0x0000ffff; ) `2 K$ \% R: b |8 B F8 i7 v
4 Y( W/ `( `( D" M& P3 F. F mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
# ~; z7 ^- h( m! X+ j8 U while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );0 P- x/ z& Q! ?: \+ N2 `) h
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 4 L1 Y Q# C) g+ ?
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );8 ~1 g- O" O; A1 n2 F8 N& k
9 q0 v# Q3 H# c: n /* Write a 0, so that no underrun occurs after releasing the state machine */9 u5 w0 q, H) s4 C% Y
mcasp->regs->XBUF5 = 0;
; R3 P7 z. D7 g3 v7 s) r. p mcasp->regs->RBUF0 = 0;' H, u' X5 x7 \ a1 P
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; , t. X2 {3 u6 Z2 c' B
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
2 q# ^2 c' V" r7 x: }9 c mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; " g; q2 H J. f7 V4 [+ L, K
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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* V0 m8 y N5 w6 m( [0 ~: W mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
5 }! T/ n5 O( f+ c, \1 q. n while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
+ L& P) b' H) h D- n1 B( I mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 5 p0 j% n7 N) L; |! B w" V2 }
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );3 ?& A# k5 Q) n: R6 V
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CSR = 0x0000;
% J6 y2 M9 Z7 @) _$ W9 J& b INTC_INTMUX1 = 0x3d;
9 S, ]2 ^0 U7 b0 i ISTP = (unsigned int)vectors;9 e8 [2 d3 ?3 K+ k
ICR = 0xFFF0; 9 q3 E5 i j3 J! S5 k. @
IER |= 0x12; : v" a0 E# G7 ]4 l8 l
CSR |= 0x01; 4 N" ?. S2 e$ T' X: \, J7 f
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还有就是两个输入输出函数:7 f9 R, R+ y/ e3 a! V
void output_sample(Int32 out_data)
' F- F( ~" h1 a9 r- O# y" u{5 e1 Q- f# ~( O9 x+ S- X U
AIC31_data.uint = out_data;
: o( C# w) W6 a% P( p3 l MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
% s2 j2 A& R, N: E* e! b{
' |+ C" k$ N+ L: k, w3 f AIC31_data.uint = MCASP1_RBUF0_32BIT;8 p: H) @! {* G# T9 `' P, E! Y
return (AIC31_data.uint);, D& A: f2 _# p7 n& V6 b* L; F
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