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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:
# U4 Y( t P' q; h! z, Dmain文件:6 U) m! W9 G' c7 o/ {
interrupt void interrupt4(void) 9 V' S. d3 ~$ O
{6 N' h3 Q( q7 }! ?
Uint32 sample;( x( H$ z) Y% C- |0 O! {2 d
7 E5 t& E* X1 T* {5 z/ I1 D sample = input_sample(); // read L + R samples from ADC
1 `7 l" H% }% n output_sample(sample); // write L + R samples to DAC ! {6 ~8 N& U2 `; F
return;
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int main( void )7 r& r: C$ a3 z( d
{
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. a# e8 X( b2 C7 `3 U4 V /* Initialize BSL */
- I4 E$ D6 P% c& V7 R EVMC6747_init( );
- Y9 L. `- R8 I e /* Call evmc6747_intr function */
4 d1 ^+ V, M% a" Z# |9 z5 k/ W aic3106_init( ); x- v5 N& Q; p/ \' @( I
while(1);7 W [' J9 y4 s
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# W" a0 Y. Z. L p% daic3106_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
& I2 {( N) A0 F @/* Initialize MCASP1 */' U3 _7 Q$ k* R5 w9 q' L
mcasp = &MCASP_MODULE_1;% X% @+ l! b. J
mcasp->regs->GBLCTL = 0; // Reset) B/ e" E: p: A; }( q# ]& k% v
mcasp->regs->RGBLCTL = 0; // Reset RX" T: `! `8 _; M/ j
mcasp->regs->XGBLCTL = 0; // Reset TX
. K4 ^6 o6 g9 b3 \# c: ?$ X9 V mcasp->regs->PWRDEMU = 1; // Free-running
. X- l$ G/ {5 ^- s+ Q // configure McASP0 receive registers( w# C! _) c' r
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used" f) i6 L- y8 _2 |& s2 p! f
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus5 H, u3 H2 H8 o( _8 L- O9 A
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word. k1 [4 e+ S- {8 P7 T
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)& k3 k( Y2 |: U/ d2 v* t
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)4 o! N" s2 L( U/ b" u
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
" X0 F& y0 ^ n3 m `9 E. m mcasp->regs->RINTCTL = 0x00000000; // Not used
; U: T# ^# Z& x! s0 z) p0 } mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
# K: V! n' C% K" c5 e& F mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
6 f/ I. c/ Z5 J; M. P mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
$ O' H! Z0 {, l+ o/ c# P1 i mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
. h) |4 h9 f! x7 A4 A& ^) G$ L7 @8 Y4 Z mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
- A( [! b2 r5 Y* _, M3 V mcasp->regs->XTDM = 0x00000003; // Slots 0,1
& o6 _2 v# F j1 s# B+ L" r mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit& n0 u4 I8 Q2 r# y+ k
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256* j' D# t4 D& W2 v% e
% m3 n9 L! D% i mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN0 C+ C9 g* ^+ R# \- o
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
- Z# [$ U, S# b( s mcasp->regs->PFUNC = 0; // All MCASPs
7 F0 e* n* |/ F! R5 {1 A; Y mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1* D, d3 ?$ _) q4 }5 _
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mcasp->regs->DITCTL = 0x00000000; // Not used
8 i( c: a& P6 Y' U" r8 g mcasp->regs->DLBCTL = 0x00000000; // Not used9 f$ D) v' M* w# P
mcasp->regs->AMUTE = 0x00000000; // Not used
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0 ~4 k9 ~$ l0 k# e/* Starting sections of the McASP*/
8 h/ Z# e+ o# g5 i6 P8 W mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 1 k3 s/ J% R% @2 {7 G [1 v
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); # y- z6 a6 g, \. ]8 {
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
0 v- A' H' I0 L3 [% V& _* B while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );+ {: T& U3 t0 V3 o0 ~3 q
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; " I8 A" k c J# y- L5 Y
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
% U; h/ ]# z- f' _( ? mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
! \6 z- F% z2 a' t$ [, I3 M while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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/ V% W8 W6 u: Z. h7 u mcasp->regs->XSTAT = 0x0000ffff;
N6 N$ u+ o4 H8 S' v mcasp->regs->RSTAT = 0x0000ffff; ; k4 I6 Z& V' v' w
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
6 V8 Z9 e. c5 e; Z8 ?: M while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
2 M; P% r! w2 ~" W" } E& } mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; - R& \8 u% O: y" r* Q [# s- G
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );- L5 J' }! s5 U4 b1 t) q$ H. R
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/* Write a 0, so that no underrun occurs after releasing the state machine */
( [8 A+ k" @# Y. ~, Z* e7 l- C mcasp->regs->XBUF5 = 0;" g4 W1 I. g8 W; a* |* u
mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
3 D% q0 r* G, R0 Y. d1 G while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
, y) k+ P. @) y) S' q mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; : f @1 [, l; n% N+ T) x
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );( |& v1 J- [/ X+ R
# v" w9 }. ?) q9 K mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 8 m l4 t! t4 e
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
1 @3 v2 R5 S$ p% g mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
- _% {, B$ ]6 Y2 F$ x# C+ r( ]: o while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );: j: Y- Y1 V4 z$ g& |% U
3 J5 G/ n9 L/ v/ d% \ T. @- k" y* K CSR = 0x0000;6 m7 Q. C( h! c1 _* @
INTC_INTMUX1 = 0x3d;6 v( c% G% z- I% z. \, e+ D% |
ISTP = (unsigned int)vectors;) s; I# {' Y( C" d5 z
ICR = 0xFFF0; 5 D' [! M& ?- a# u
IER |= 0x12;
T% J2 ~9 h& T/ Q CSR |= 0x01; + {) c( P) p" G1 i
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* H$ t) m) @$ a# ^) l7 z还有就是两个输入输出函数:
6 y# p$ N/ ]$ Nvoid output_sample(Int32 out_data)4 n) ]9 }3 A0 t. s
{
9 z0 g+ L: f2 d$ o* P1 o AIC31_data.uint = out_data; - a) e$ l7 I" _2 }7 E( p3 _8 R
MCASP1_XBUF5_32BIT = AIC31_data.uint;4 ?3 K! m- m! ^/ }+ m0 |1 K( Y
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Int32 input_sample(void)" F" I% d; H; V3 Y: W
{ ; L3 x a: o3 A+ x5 G
AIC31_data.uint = MCASP1_RBUF0_32BIT;2 D4 ]( k* B. m. P% b9 e; S
return (AIC31_data.uint);
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