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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:. {4 w' H C3 j1 i* u; [
main文件:
2 }" e) g/ X" ~interrupt void interrupt4(void)
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% [; C$ n4 b/ p- B Uint32 sample;) s. l: o9 T- T% w4 {, R+ Q
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sample = input_sample(); // read L + R samples from ADC3 ~: t/ I# c% J' I* u
output_sample(sample); // write L + R samples to DAC
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- T$ u' { n* G2 }+ L: J3 N* cint main( void )* i( J2 @0 F" k% ~6 J
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/* Initialize BSL */
% }. T( |7 v. _1 L, B9 n EVMC6747_init( );9 y3 [. ^; n, P3 c! L; X1 V2 ~: o
/* Call evmc6747_intr function */
* H1 ]* F" x2 @. x1 i* i3 ~ aic3106_init( );
1 F5 k6 A/ m! G& h9 Z while(1);8 ^# n( n$ s* E9 f7 T
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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, D+ \- m! a* C R6 R
/* Initialize MCASP1 */- n$ I2 v- Y7 _; f/ G! Y
mcasp = &MCASP_MODULE_1;
6 P- \2 x4 J; u- g mcasp->regs->GBLCTL = 0; // Reset
8 r* y2 V$ V' n# R$ `4 C mcasp->regs->RGBLCTL = 0; // Reset RX$ w. ?' }/ `/ x) |. J& C
mcasp->regs->XGBLCTL = 0; // Reset TX8 l2 ?" d- Y& S, f1 }% w7 P8 D
mcasp->regs->PWRDEMU = 1; // Free-running
8 a% u. W$ U$ F6 R // configure McASP0 receive registers: R& F: g" [2 o$ p8 _9 K: z$ R6 Q
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
# x" @: n( }7 N, l7 X4 Z mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus4 y% Q' L) d( ? a
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
9 Y' u5 x. W8 E1 i mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side): R# x9 f0 N/ h: h/ G& z
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side), u1 B" L( ]5 D1 i
mcasp->regs->RTDM = 0x00000003; // Slots 0,1% X% {" ?4 j8 ?* i
mcasp->regs->RINTCTL = 0x00000000; // Not used
X% M5 p }) r" G" B: c: Q C mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2560 J) k. s5 ~" A# P/ h# t; B
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used' e/ h3 u! V) X
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus% @% p. ^& j& y
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
& O7 u) G5 B" b2 d mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-164 ?: C+ X" y. e3 [3 Z
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
, U( P; \; r; x# O4 z( W. F mcasp->regs->XTDM = 0x00000003; // Slots 0,1
- D" @! Z2 _# j2 G. w4 E/ f mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit" R7 e0 n, G$ h/ J5 }/ M
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
, g4 q9 w% X& p9 j8 D% i mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
' u* z4 d7 S8 J t2 t$ d mcasp->regs->PFUNC = 0; // All MCASPs
- j7 j) x, J$ ~0 [ mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1& G+ }0 O* D* u# H6 q
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mcasp->regs->DITCTL = 0x00000000; // Not used6 U; n7 {" _. y
mcasp->regs->DLBCTL = 0x00000000; // Not used( i6 s5 J! Z5 Q8 E
mcasp->regs->AMUTE = 0x00000000; // Not used
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2 \! n( G' `9 G. }$ [6 _6 H& X/* Starting sections of the McASP*/, h: M& ]: I# z: _
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; + U/ j# c5 a7 z4 G
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); % u- Q2 Y1 |0 j# C3 v! y
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
: M9 }; {5 h, D3 I0 I$ I: [6 j while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );1 x8 `4 G& R$ L1 y% d. C. P
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; ! R s' \! O- f
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
' R: q7 h# s F+ E+ } mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
6 y0 P) Z% \6 v8 n( g while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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2 f6 c' Q7 _- l. `0 ~: B0 g mcasp->regs->XSTAT = 0x0000ffff; 7 `+ g9 E+ g6 m& C
mcasp->regs->RSTAT = 0x0000ffff; 0 g3 M6 D6 I& T) k. i
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
5 U. y6 T* _; R$ k- k; T while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );, r" E! b: W- w9 D+ W7 [
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; + Z% W1 E: h% I; u8 X
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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- j, x; G7 W7 C$ @8 l( |# T /* Write a 0, so that no underrun occurs after releasing the state machine */
$ {8 T# C2 o- w8 ^* F& q. j mcasp->regs->XBUF5 = 0;6 a5 X+ d6 q: E! r# Y9 d( V
mcasp->regs->RBUF0 = 0;3 s8 S' T; R& W7 Q+ l
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; ; W* C1 L) ~+ W- q
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );% L# l: d. n( D, J+ s- p& Z, f
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; " ~4 m3 t! |/ E+ o
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );8 [) @( h/ U3 a- {
# x4 ~: w- [) i. P5 Q7 h! }! V8 U& N mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
$ z2 @/ B. a. ?3 p, ~& G$ j while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );3 q0 X4 |1 t$ N1 d R, R
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 3 m0 K; `, Y! K; v6 W+ x+ ?0 k
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );" ^: Q/ Z+ v# I7 Y% a1 I5 Y
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CSR = 0x0000;# `% P! t2 K& D2 L0 F
INTC_INTMUX1 = 0x3d;
7 b/ \9 E/ @, c5 F9 t ISTP = (unsigned int)vectors;' k6 Q" q% w5 W8 T9 J5 q
ICR = 0xFFF0; # h d0 l- ?- e, B8 r8 }/ W/ P; }
IER |= 0x12; ! X8 u$ `1 H4 W4 r2 M+ [* K2 z/ O
CSR |= 0x01; ; _8 c4 }) l+ |- l# E0 `9 S
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+ O3 x3 W- j1 A" g/ V! q还有就是两个输入输出函数:0 N4 u0 ?- y( V" r- F" f) c) Z) ~
void output_sample(Int32 out_data)
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$ ?& _6 [: `* q5 n& I AIC31_data.uint = out_data; 4 D& x' i1 V7 x; j
MCASP1_XBUF5_32BIT = AIC31_data.uint;- S' Y- D5 f# Y! C! z4 e
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Int32 input_sample(void)
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4 j$ n/ K# d' s8 R# C AIC31_data.uint = MCASP1_RBUF0_32BIT;2 K2 d6 l8 s4 t5 n; P D; L
return (AIC31_data.uint);# o D% j6 x* m
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