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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:
! H, `' l; E5 T/ p( o* F4 Gmain文件:
: V6 E% N, H; t4 S& tinterrupt void interrupt4(void) " _5 w' s- U* @
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Uint32 sample;
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$ S; g2 A% H' h" Y# E0 L; o sample = input_sample(); // read L + R samples from ADC3 j4 \8 R; {' b5 h, g
output_sample(sample); // write L + R samples to DAC ! ~! B& r. E# F! q4 C. V
return;
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int main( void ). m: r. E( N: i7 @! r
{
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/* Initialize BSL */* a2 b+ i2 R- Q% G$ h: I/ L8 k, f
EVMC6747_init( );
: O% m# W/ g# ?/ E$ H% _ /* Call evmc6747_intr function */* B4 A, P3 l% w' C$ D" B
aic3106_init( );7 k0 E1 ]8 { m3 [/ a- z, O
while(1);; Q; } v* g$ R1 d! p! U
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* j% o" w; A% `3 [1 Haic3106_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
+ u, G. s [" T6 N% Z6 P/* Initialize MCASP1 */
7 _- {8 e* C5 a# Z# ~5 {) k mcasp = &MCASP_MODULE_1;/ ~8 c% U2 u8 c) X% O% d/ d. m u K
mcasp->regs->GBLCTL = 0; // Reset
' _2 [+ D% a( U, W% R mcasp->regs->RGBLCTL = 0; // Reset RX' ~* v- {! ~6 i$ I
mcasp->regs->XGBLCTL = 0; // Reset TX3 b( T2 \, U9 }
mcasp->regs->PWRDEMU = 1; // Free-running; B1 e) t* R' @3 k+ ]
// configure McASP0 receive registers* C& \6 D& q" n% Y! u* f
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
6 Z/ y7 U# {+ C% @- p: S- } mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
" `# j: R3 Q8 ~' ~ mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word$ n) g2 n p+ }( s& y s; h% `2 n
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
1 M5 a% E" ^5 B b$ s) C& [" a7 W; Y mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)& Z; ]3 T) H8 R( v4 E/ K8 R% k
mcasp->regs->RTDM = 0x00000003; // Slots 0,1+ l, v% S9 F. `, B' P" G" L
mcasp->regs->RINTCTL = 0x00000000; // Not used
7 b3 B& Y0 b! i; L. W- {' g3 [ mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used* j9 y; _" E: f' B
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus# N& Y$ t4 w. u* K
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
0 i9 ], s, F1 G3 |5 O! p mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16 \ S+ ]7 R. I8 p
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK& v- M' c8 X& _# t
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
: L& _+ }' w A) ] mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
$ \5 z3 t! k5 G3 e mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN( ]3 p6 Q) H7 l6 @ x( _6 X7 e
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
+ N# e; y8 B' r6 X% j0 l# [+ B mcasp->regs->PFUNC = 0; // All MCASPs& C# }4 A0 b& g, ~
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used1 n! r, X1 n. v7 @1 o1 H
mcasp->regs->DLBCTL = 0x00000000; // Not used& c8 G; O7 @- n* y0 b! M& Z8 y' O' r
mcasp->regs->AMUTE = 0x00000000; // Not used
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7 H! @" X0 Z( E# b- @/* Starting sections of the McASP*/
0 ~) Q. A& F5 ~# k/ J mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
i! [% ]7 A' j2 W8 }0 L while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
" }$ S s/ R3 j mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; " ~% y8 K* E" Q" k* [8 ]
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );! E& P! B) t; R N/ ~
: L8 ?& J6 F: D: @3 w5 R$ e mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
" G& U6 p$ Z: M7 D! o8 E while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
8 ~! Z |0 ]) Y. q mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
$ K/ L. i5 e. n$ `+ P while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );4 S! e) W( [, p7 V* o, d3 D
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mcasp->regs->XSTAT = 0x0000ffff; ; {6 ?$ \- f' t/ d7 ^) e
mcasp->regs->RSTAT = 0x0000ffff; 5 F) a* l& \3 {% {# j
0 {9 C" T; ]) o7 V }% T: D C& w mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;/ R; w) L" t G. j5 K0 w& M
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
3 D9 i$ z" S7 X3 G: j mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 0 x, Z9 w' _6 q2 q* y# T
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 */) a |2 X5 }, K
mcasp->regs->XBUF5 = 0;
, E8 O, K4 f: }* M/ h7 I mcasp->regs->RBUF0 = 0;; x0 ~2 ?# @: z; k, y W
" h8 J' A. T. z/ ?/ f9 ? mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; " P0 R+ D! A) H0 i2 w8 i. ], Q
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
% r4 o% p2 O6 Q. n0 U. M$ n3 p mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
* D# ?* k+ z' h while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
1 t" b! y$ i, H8 M while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
7 R2 d* W' x2 `0 C# a* n1 ~ mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
: u+ v3 Y* C/ x- V while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );- D% M5 t6 F; c. c; v e. F
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CSR = 0x0000;
% o9 V# p7 E* h! @7 O INTC_INTMUX1 = 0x3d;
$ S* A7 @" O% {, w3 w ISTP = (unsigned int)vectors;
! W: Y- ^% ~, {, p; N U$ q ICR = 0xFFF0; $ y9 }3 |) E0 ]* R3 y% _
IER |= 0x12;
" L$ I# I: N7 p. C CSR |= 0x01;
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还有就是两个输入输出函数:
( a1 b* z& F, O$ @8 ?void output_sample(Int32 out_data)8 U$ n3 s w1 @
{
+ c6 N! [, F$ G$ z3 O7 u AIC31_data.uint = out_data; + R$ Z2 N) K) ~$ Y
MCASP1_XBUF5_32BIT = AIC31_data.uint;+ K3 p2 Y0 D# C4 Y3 _
}
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2 h$ w/ s3 ~3 q/ q% W1 V7 J+ gInt32 input_sample(void)$ Z) \2 v) a U# U# W
{ ! U. x& E( d, T$ b4 c& I
AIC31_data.uint = MCASP1_RBUF0_32BIT;
! z4 z: Z0 v; X" i! Z return (AIC31_data.uint);
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