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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:! O8 l9 T3 B0 I' O% o; j9 p
main文件:
@ z4 n! f( f( w: T2 Uinterrupt void interrupt4(void) . ] k1 n9 O* S" ]# y' f" X
{
- C3 A5 L/ B! B# T+ @$ h Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC
, J. n) T+ r* T6 Y) p' ` output_sample(sample); // write L + R samples to DAC % J; G( I" W( B4 |
return;9 F3 S# S! c* [0 i0 R
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int main( void )( B& G+ `7 X2 }5 g1 o
{
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/* Initialize BSL */! s& F3 A; V# m9 @
EVMC6747_init( );
* I! W' W7 N/ l5 Z /* Call evmc6747_intr function */0 p: T- ?, V8 s/ Q1 ?3 M2 e
aic3106_init( );
3 L% J. j( O7 y, P4 Y' K* B+ Z while(1);
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. N' H% Y |, M) u% c6 Raic3106_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
" `4 r+ U. E# c Q$ q# J8 C/* Initialize MCASP1 */9 |% p( w" H' R, v" g6 R
mcasp = &MCASP_MODULE_1;
$ O8 ~/ b7 s# i mcasp->regs->GBLCTL = 0; // Reset$ |8 T* }0 }. Y6 a5 |5 W
mcasp->regs->RGBLCTL = 0; // Reset RX4 j" z( i7 e# X( R/ Z f/ D
mcasp->regs->XGBLCTL = 0; // Reset TX1 c8 I8 P6 U- t( }1 Y
mcasp->regs->PWRDEMU = 1; // Free-running* B5 H1 y- B2 k8 q1 Y, g
// configure McASP0 receive registers3 S$ a# w. Y3 r5 `! |6 i
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used8 ~; B* c$ ]/ J9 o9 V9 d4 ~6 H
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus( c; n8 e+ T! |' i: l& p1 P3 h: Z
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word4 [% F3 [* f( m! C% `: R
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)4 o$ T( F h8 F/ i A8 E
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)/ w. e% {0 U9 `- V3 G8 a
mcasp->regs->RTDM = 0x00000003; // Slots 0,1( t- k5 U0 y6 s4 k. |9 P y
mcasp->regs->RINTCTL = 0x00000000; // Not used
* F0 k8 [5 r! y4 K mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2560 |; n) F9 e7 e9 j; e' w
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
2 U7 p1 N5 a$ E# W7 w; c5 J mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus$ M) q9 O% i" `& q+ R
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word9 |& U- ?: V/ b+ B2 e. x; b
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
0 D1 Z' z. x* K1 ~0 w mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
- l {/ P2 D: d3 `; K mcasp->regs->XTDM = 0x00000003; // Slots 0,1
' P# N+ f9 I6 z7 a$ @3 q, e5 p mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
# F$ K$ m6 Z8 m7 m+ [* W5 k mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN4 K+ \( P3 _" ]1 x2 |. r
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT6 a1 K& Q; M' I+ M
mcasp->regs->PFUNC = 0; // All MCASPs
! R) s* X- S1 p6 N* A: K+ V mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1& }. E( L* C9 M. C% j9 u0 E
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mcasp->regs->DITCTL = 0x00000000; // Not used1 N) [# q5 R. D H
mcasp->regs->DLBCTL = 0x00000000; // Not used
9 l. h" K- u! @/ D6 B8 {4 e mcasp->regs->AMUTE = 0x00000000; // Not used
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/* Starting sections of the McASP*/7 y( T1 P; ]+ M6 Z& H- b2 N
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
) x; F- T1 i7 s! R) `0 f while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); % x. g7 o1 U8 ?1 U" ~9 ^0 a
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; x. |2 d" O3 U: n4 }! ?
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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# T2 E& c5 ~/ e" ^. F mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
4 f" r5 n z7 _* r while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );! e! [: x% h, a! l2 ~
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 3 D* n# c; |% Y6 Q3 S" b1 k2 Q6 R
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );# |+ i. M' Y$ n0 I4 y# w
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mcasp->regs->XSTAT = 0x0000ffff;
* q) I: Z2 ~- }/ j& t! t. V mcasp->regs->RSTAT = 0x0000ffff; 9 s! S7 F+ H6 C1 q( X2 V4 B
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
5 s4 D" z9 q1 k) k while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );! ` D* z' {8 r% s, ~
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
" |$ Q" ~$ _& n Q( R' W/ ?$ M while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );& L2 _5 `7 d9 @, D, u1 X
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/* Write a 0, so that no underrun occurs after releasing the state machine */, y# S Z6 Y7 z6 T
mcasp->regs->XBUF5 = 0;
4 a. a) m% ~, M+ A mcasp->regs->RBUF0 = 0;& E( b% f* W. G6 P
! { C) P7 T( n u& y8 V8 q# k mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
0 A3 S4 t) w e9 ~9 X while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
6 {! W+ |( g9 b6 K# e) S3 ^: B' Q mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
) S P. ^, T b0 N1 G# D5 ~ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );+ {* u Q! o7 T/ U
) h) y' H0 I7 J( L9 F mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 9 [" \' z9 ]3 V
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );/ u" A I; _4 K/ U. R: k
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
" `' t: o! U( d while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );8 x2 G8 w& S$ T
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CSR = 0x0000;- Y2 d- C3 @1 G) G
INTC_INTMUX1 = 0x3d;
: v. |' m% ?# P+ G# ?) I% E ISTP = (unsigned int)vectors;) J1 b$ U& j, {7 r8 Z6 }: \7 p
ICR = 0xFFF0; 1 L: D9 g8 e4 X T! `% V* _9 Y
IER |= 0x12;
' T* Z2 n. D" T3 R9 [# E) R& H8 F CSR |= 0x01;
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还有就是两个输入输出函数:
& h. l+ M. f8 F" c: evoid output_sample(Int32 out_data)
! _/ {5 j2 m; _4 }! L4 {/ e{
" F9 Y9 F0 I# d) p! P; t AIC31_data.uint = out_data; * c% s9 g+ N+ }- j2 b( t8 Q
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
2 N3 ^( e; U7 D% W& e' m( C return (AIC31_data.uint);/ j8 b3 b0 k' U/ }6 ?: \
}
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