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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:$ R3 r. d$ X: p/ v9 z2 |5 E
main文件:
8 p, P. A% M* q4 f+ ~" j* X- D6 X5 jinterrupt void interrupt4(void) & ~. K: f& H Q' H {& i8 o/ b) p
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Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC& K8 }" e, M p8 c+ b0 i
output_sample(sample); // write L + R samples to DAC
+ _; B- ~ }/ C* S2 w9 J return;
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7 O+ E$ |, e! R& Mint main( void )
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/* Initialize BSL */. X; A2 m# I* b P) W( R a
EVMC6747_init( );2 ~) e- Q+ r$ g9 U0 b' Y1 i0 W
/* Call evmc6747_intr function */5 P2 S7 ]. q' G. v( U
aic3106_init( );
5 h# P9 ?7 q, R1 ^! a while(1);
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aic3106_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3 w' _" ~8 R6 S7 K' X$ T1 R
/* Initialize MCASP1 */
x% u5 d' X% ?! F9 h+ E6 |6 j; X1 w mcasp = &MCASP_MODULE_1;% p: h X }( T/ a9 R
mcasp->regs->GBLCTL = 0; // Reset
3 d; F( m- `6 q9 G5 M3 q5 Z mcasp->regs->RGBLCTL = 0; // Reset RX
; z7 R. v/ n+ S1 @6 B" S& c mcasp->regs->XGBLCTL = 0; // Reset TX
9 r% ^& C$ H% _8 |2 w mcasp->regs->PWRDEMU = 1; // Free-running' j' e7 Q; U. P
// configure McASP0 receive registers
+ m! B4 N: O$ @ mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used8 l; y) G; T2 N& O5 a
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus1 u% i: p0 F5 j- l3 q. d4 Q* i/ H
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word4 x6 |# u( P! v! y) ~) Y; @- [
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
) {0 J+ m) L5 v& B, [7 i6 r+ a+ F; Z mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)5 o( Y0 P- ^: M/ I7 W5 Z% E
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
7 `3 C$ {, d) S6 C$ Y$ u mcasp->regs->RINTCTL = 0x00000000; // Not used
8 Y# D1 [2 L; b mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2560 y+ m# Z: e& ~$ h0 Y" i
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
, b2 z* i* u3 c$ o# S1 B% z# e- h( L mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus/ `$ `8 b/ {8 H& ^; I2 J! R6 ^
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
. `1 C) ?( N8 z mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
" r8 a- H% Z9 i# ^ mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK" X4 s" _% R4 s: S
mcasp->regs->XTDM = 0x00000003; // Slots 0,14 s. L# {8 o' M7 ]# x
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit) K! Y/ Z& V' D
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN y. p2 `3 q( G, z9 z0 G
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT2 t' B; k3 l; w8 y1 ], t
mcasp->regs->PFUNC = 0; // All MCASPs! W1 W" N1 c% ~4 g& ?
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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4 L! E/ o }, L, _+ Y! L! B8 l2 D8 J; {' ^5 G mcasp->regs->DITCTL = 0x00000000; // Not used
# z5 g: [6 W& Y mcasp->regs->DLBCTL = 0x00000000; // Not used
1 N' }% K$ P; o% K; T6 u0 J; s/ [ mcasp->regs->AMUTE = 0x00000000; // Not used5 a: A+ f0 g/ w' K v, o
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/* Starting sections of the McASP*/4 [! W2 _+ O+ {. K, k
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; $ p+ D0 g2 A9 q+ m9 J
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 3 y* \5 Y; Z* X0 n& A
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 3 \/ b" \4 T/ a) A! ~5 R4 u
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
P0 L0 e. W% m p4 l$ K B while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );. k! N) ^! }) E( W, v$ q6 |! V
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 4 V" B5 S% s- P: i! W* \
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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+ Z, O8 Y- V( k' Y$ w- F1 c4 Y mcasp->regs->XSTAT = 0x0000ffff; , H/ ^. f& k* F+ M1 U0 Q
mcasp->regs->RSTAT = 0x0000ffff; 1 O$ |4 x4 Y f. [& V
{" @% \& D E4 j2 f mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
7 W5 [) d; R3 t while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
- N8 g5 ?* z7 W! J' R mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
. w- ~- v& G' V$ G( C; K 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 */& N. c! f3 _2 H, H. V# w! Y$ U5 k
mcasp->regs->XBUF5 = 0;0 j3 t( O, C$ @! g5 v; q6 u J
mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
& T" k# l' ^; a; y# D% i/ U4 s while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
, M. S8 [0 i2 G3 L; k mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
, M2 b; l4 P3 b. v while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
# |: S. y) }$ O8 B8 i- s+ N, D while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
- G, n! q" Y" g4 w1 X/ r mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 3 F) H3 \+ G2 v* {5 O
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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4 P: `" J$ W: f A5 l5 Q CSR = 0x0000;) k8 _# q% W2 a$ O
INTC_INTMUX1 = 0x3d;" `! V& n: y0 y7 e" C" d6 ?
ISTP = (unsigned int)vectors;
7 z* I+ p4 l m" r$ D% N+ L! z ICR = 0xFFF0; 3 j0 w+ n0 ~7 `2 c
IER |= 0x12; . v P; |: a% Y
CSR |= 0x01;
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还有就是两个输入输出函数:: l; B* t/ T- x% r6 g2 i8 K. R
void output_sample(Int32 out_data), ]2 c" B' I1 P! M- K# u
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AIC31_data.uint = out_data;
* N3 ^+ p# \/ K+ W. D5 e: N) h MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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7 n& k# H: c: y2 p AIC31_data.uint = MCASP1_RBUF0_32BIT;' x5 z5 Z# s6 e& j
return (AIC31_data.uint);6 E* D8 k3 O( p0 w5 f
}
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