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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:: E6 R) B# [* {1 }1 {
main文件:
|/ \. D0 v) m# t7 [interrupt void interrupt4(void)
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! T4 [) Z% l5 l- H7 _ Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC
' Y* u7 I7 z8 i. F+ q5 Z: F( d! l output_sample(sample); // write L + R samples to DAC 4 y( C2 e" i, ?3 Q1 S
return;
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int main( void )9 o5 u5 V7 L0 m+ N; J1 I
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/* Initialize BSL */
4 _* `: x0 D" V% i EVMC6747_init( );8 }- Z6 o! N- g2 B3 k7 t/ I2 L' w
/* Call evmc6747_intr function */$ Y) @5 p2 u$ \( ^6 b& j' \9 O, H
aic3106_init( );
5 j8 x/ L. ^. L while(1);
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8 d. u0 f8 h1 u$ ?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6 i' O/ ?: Z% r0 M$ V
/* Initialize MCASP1 */" r, P* \3 j! X" V8 N3 c1 B
mcasp = &MCASP_MODULE_1;3 U9 f$ N5 H; M+ I
mcasp->regs->GBLCTL = 0; // Reset
; T2 Y' w3 n" V mcasp->regs->RGBLCTL = 0; // Reset RX. ]& r# y: c& x6 H. a0 ]3 c
mcasp->regs->XGBLCTL = 0; // Reset TX$ ^ Z) `8 r+ S& v S' P
mcasp->regs->PWRDEMU = 1; // Free-running
# W+ I( P( G1 g // configure McASP0 receive registers
# w! R, b( r/ Y9 Y3 t: w mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
' X( \0 P- d6 J1 _9 t' N3 E mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus3 }1 n f& {+ ~& W5 P- L/ B
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
( R2 b! c9 [6 r) n8 w ~ mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side); ?6 D @! I+ E* P8 i& }
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
: I1 e q4 m3 D3 }* ]' Z7 W mcasp->regs->RTDM = 0x00000003; // Slots 0,12 P# Q6 T6 W+ a
mcasp->regs->RINTCTL = 0x00000000; // Not used
* T$ U, Q, x) H& }0 x mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2563 T+ W+ E. M/ j, H
) D0 }! c( W( K: q* U! A& B5 a mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used1 r1 l4 @- z. B8 a
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus$ _3 W1 b" ?" j# o7 W8 e; h" C
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word. _/ U6 L1 F$ a2 ]
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16& ~: s! u k7 t8 n, z
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
' T% D# x7 k0 ^! ^' v% z) e mcasp->regs->XTDM = 0x00000003; // Slots 0,14 ~4 l8 }- b/ T4 i/ }- N5 B. d
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
7 y$ L" _; I/ Y) T; G: l mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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8 _: ~0 D$ i0 t/ J mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN0 X+ E; V9 J+ ~! |" X5 [+ x
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT" `1 O! W1 _8 B4 |7 T
mcasp->regs->PFUNC = 0; // All MCASPs
+ ^" e' @$ ?' i mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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$ }: ^9 C" C0 [0 H2 {9 v# ` mcasp->regs->DITCTL = 0x00000000; // Not used
/ c6 I( R# ?6 w1 z: Y4 c) | mcasp->regs->DLBCTL = 0x00000000; // Not used
; ]4 ^/ K! v A: W mcasp->regs->AMUTE = 0x00000000; // Not used
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$ W' s* W" U4 A9 Y6 d/ I/* Starting sections of the McASP*/. y! F. K) I/ A' A2 I+ j) Z
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
3 r* ?( T, h; r' s while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); / l6 n3 Z- q6 `; i' A0 g0 C
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; " N# A/ p4 c ?9 \
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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( F" ~/ T+ y9 x mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 5 M# g* M0 w- ?$ r
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
) C: j1 y) f3 Q F( Z mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 1 _+ U" z: F! ^1 W, q
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );" V! O7 k ]; W X1 h3 b
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mcasp->regs->XSTAT = 0x0000ffff;
2 _, a+ w; X G: n" v8 a; r mcasp->regs->RSTAT = 0x0000ffff;
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: [+ W9 m" }4 C7 r) Q mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
- V/ u, u& q# W m while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );0 k# _0 M! Q& ^+ m! w
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 5 w6 J8 v, p3 R( X( s* i7 ^" H0 {
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 */
- u: W) o' g' k mcasp->regs->XBUF5 = 0;
6 A! x( ~* l2 w4 J7 b mcasp->regs->RBUF0 = 0;
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) P0 h" S* ]* z8 \& E/ Z% X mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; ; _8 j. E, j/ s7 \; j0 {/ W
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
, y2 ]# t9 o! ^0 T* v mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; . G3 V8 x7 G4 [7 R& Q X' D
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );$ j1 a& Y' d& i( n
# j z! g1 j# ]1 K mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; * |. U3 X& i0 Z
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
5 m1 V) X# }9 _. a) W mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 8 n6 f) @. C$ X9 B! Q: w
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );# ]3 Y9 G: b5 L$ ], v* ]
9 V, B- i9 P5 w9 }/ t4 E: R CSR = 0x0000;. N% I$ r, ]- ]( t
INTC_INTMUX1 = 0x3d;
9 N- ]0 A1 d1 u) g! X( W ISTP = (unsigned int)vectors;
- q, G7 g) t! P ICR = 0xFFF0;
4 n: V7 f! w2 I2 t4 x; n IER |= 0x12;
2 Q: t: \+ }' Z* p1 E CSR |= 0x01; ! _5 D+ @5 [! Q. U- A$ q/ e- \
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6 h' H4 U& w1 G$ P4 I8 ]+ P: H还有就是两个输入输出函数:/ O9 l _! l8 c4 R" l% A
void output_sample(Int32 out_data)
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* ^" J' Z7 `* ?! ] AIC31_data.uint = out_data;
. x! l% {: ^/ H: X4 {. A" K9 N MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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& q7 ]2 H. D& I* e f* d+ m AIC31_data.uint = MCASP1_RBUF0_32BIT;1 R6 h, |" B B1 x
return (AIC31_data.uint);6 W1 S: |/ v! b6 J T6 ?5 d
}
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