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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:: [9 L$ p! m% b
main文件:/ R: ~0 j/ ?5 s' g% a+ K
interrupt void interrupt4(void) 3 B0 s' Q* o# x
{
* d8 b, x% y# Y# V Uint32 sample;/ p: L8 @) s; R) h0 g8 V
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sample = input_sample(); // read L + R samples from ADC( L/ n; X v! F* G
output_sample(sample); // write L + R samples to DAC
& ~3 D7 p0 J; W" `. D/ N7 |2 Q return;
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int main( void )8 x+ G- M4 Q: j" i
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/* Initialize BSL */
, W1 c) K5 D& B8 e0 | EVMC6747_init( );
4 j+ b6 x) k3 l: L+ g /* Call evmc6747_intr function */5 v7 j. ]8 ^0 n; m
aic3106_init( );; o7 l. R& \+ D3 ?
while(1);8 b6 ?9 E* X( p
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7 y; h4 e& ~8 [+ taic3106_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
9 a6 W# u1 Z/ G N; \- v; E/* Initialize MCASP1 */6 |' |# j" a1 `. S7 S7 E
mcasp = &MCASP_MODULE_1;! R, o/ R" }1 B# }$ z3 s" @
mcasp->regs->GBLCTL = 0; // Reset0 F9 \, n) W" J2 p
mcasp->regs->RGBLCTL = 0; // Reset RX% I1 i! s4 y* t2 ], M, b+ y
mcasp->regs->XGBLCTL = 0; // Reset TX
. s, {/ ?/ l% y! Q1 F! M mcasp->regs->PWRDEMU = 1; // Free-running% o* ^- c3 d0 I4 u
// configure McASP0 receive registers5 s9 }6 v( Y3 b1 {* m; A0 _
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used9 N' Q$ w5 M. C( J0 A0 Z. }' K- \
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
: b& m; i v& x9 O1 @+ ? mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
) k1 z9 N% `9 z) J5 F3 x* c mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)! n6 q3 I- q6 W( W7 l& d
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
/ U0 X8 n8 j5 r' v* c) P9 H! X mcasp->regs->RTDM = 0x00000003; // Slots 0,1" {9 `8 d+ ~9 C
mcasp->regs->RINTCTL = 0x00000000; // Not used
7 x% t, a# ]5 _0 r mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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* B8 W, I! P8 ]# m0 | mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
/ f4 W( m+ J0 H mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
1 R3 T# }& A3 |3 ~ mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word* _9 f) e+ H, a4 j
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
( C0 `: A( d9 a$ f5 ?, n+ J mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK% r# n$ S2 L9 I1 f( k2 [. F
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
* o6 Q: f- q2 h mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit1 [- K1 V1 t6 j6 W" j
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2565 y& b* d" D3 q, b1 }! M' W# E- J/ D
# a P4 m! m9 \" W) z mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN% A4 G% K T/ [9 a/ \' ~$ T
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT" l, q" W/ X( ~: P, f5 a
mcasp->regs->PFUNC = 0; // All MCASPs
% S) f7 f4 V2 j7 j# | mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1) {, B# a2 J* ?: h5 r0 K
( z! k# Z! C$ N4 I' c mcasp->regs->DITCTL = 0x00000000; // Not used
" V& ~4 c4 t) M/ ]& N9 k mcasp->regs->DLBCTL = 0x00000000; // Not used
4 `: O S% U7 v9 ? mcasp->regs->AMUTE = 0x00000000; // Not used
5 a* `, b; w, ? q o: j* }) _2 u5 g5 @( ~
/* Starting sections of the McASP*/: f4 [: Y# p* x" l$ Q2 B/ P
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; ; l: w0 T. o' t: H7 e1 e4 p) z
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 0 h% |. P' A7 ]
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
3 R' Q7 R6 i; c4 I while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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5 Y# q9 n+ I( B+ v mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
+ Q1 x# D: I0 U$ s7 D, }$ P while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );6 L. a/ g& B, {
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; # ]% D7 s+ K6 x, {" F' d
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; 7 [7 }+ |3 E1 y3 S7 o# F
mcasp->regs->RSTAT = 0x0000ffff;
; }5 y5 w* C+ b: d* S
3 A* `( Y2 Z. `+ [" `/ [ mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
* d, \# g" I7 U7 T) a% ` while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );8 q( G1 d5 [& |* S- e( U9 P8 x7 n
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
' H: i) T6 \0 p/ N+ J while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );4 N% X4 `0 c. S# C0 b4 L" r, \/ t
& E/ k' K) n8 Z /* Write a 0, so that no underrun occurs after releasing the state machine */" u- h$ ~6 c5 R% O* N* W1 W2 t9 p
mcasp->regs->XBUF5 = 0;
5 q" r" x* q2 p8 s- |5 x mcasp->regs->RBUF0 = 0;
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3 N& k3 M8 J, K4 I* l) X mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
" |5 T, S- z" |' h while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );# d$ M4 ~0 j3 D0 ^ H
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
. w1 V& _0 D6 N$ @& I, J' ~% q while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );5 c1 h" p0 q. J" [
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
+ y2 y% D: H7 L2 P- m9 s while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
5 B# Q7 v5 R% t mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; * e4 l) P2 F4 u) t) w, X; d
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );: ] Q& ]; G5 z
+ u+ {/ M3 V/ F. Q. ]1 J/ @ CSR = 0x0000;2 V( @, Y! _* w* D0 O' t, b
INTC_INTMUX1 = 0x3d;4 G6 r( J+ f# E2 M6 u6 l
ISTP = (unsigned int)vectors;
4 w2 \+ [( m2 y; n# ?. v9 W ICR = 0xFFF0;
5 U/ d, C. @" O IER |= 0x12;
6 E- l, c+ q# G CSR |= 0x01; * r( l! z0 X: s2 ?
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还有就是两个输入输出函数:; Q1 |+ v- e E d, g* ]5 R
void output_sample(Int32 out_data)8 v) ]! F v, s! S" X
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AIC31_data.uint = out_data; $ q* r, O. m( `# x E7 R
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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) \/ _% B1 ~( V+ \, c- o" IInt32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
& g' R: n% h- f* G return (AIC31_data.uint);
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