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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:6 O( m, q+ Z) ]. j5 |' y
main文件:
* X/ ~! T- Q% |interrupt void interrupt4(void)
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' K$ \( o% j! Y2 E Uint32 sample;* K+ N ^% S- R( ~: x9 k" U8 U+ ~
, M: E8 r O/ x. T/ C% G sample = input_sample(); // read L + R samples from ADC' W% v' K+ ^( ]/ F4 N6 W3 |" l
output_sample(sample); // write L + R samples to DAC # b' Y1 m4 J+ H" v A8 R) [) D
return;
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8 g1 @( x: S+ `/ I: cint main( void )
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# s2 ~: {! Z5 E d7 V5 `" o8 ~ /* Initialize BSL */
0 D1 c J8 ^. P6 Q! a0 N+ ? EVMC6747_init( );
1 q4 N( B$ x/ K' U /* Call evmc6747_intr function */
; T. z& e% m; W aic3106_init( );
' }4 p. B( x1 g' @ 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
) ]# k2 @% i4 C) i3 o1 t3 p! S7 ]/* Initialize MCASP1 */% z5 \$ Q4 L) U- k
mcasp = &MCASP_MODULE_1;
* q* A9 m& A2 m, ] j) w$ @8 b mcasp->regs->GBLCTL = 0; // Reset
, a9 J2 q9 Z; T- M mcasp->regs->RGBLCTL = 0; // Reset RX
! \2 \' J2 X+ J. I mcasp->regs->XGBLCTL = 0; // Reset TX
4 G( }$ M) m7 q+ x mcasp->regs->PWRDEMU = 1; // Free-running
' j$ P7 Q4 K3 L# D% b // configure McASP0 receive registers
! F) V$ |( h- P6 j: P* O mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
! q) E( K. Y" t: A mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
3 K1 L2 r8 u3 y( Y0 z8 S! B mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word5 ~ g3 R: H0 i0 ^, v3 q: {
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)7 O0 k% F2 T% ?7 A ^
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
P y- Y& z$ C4 M8 a3 ~( o mcasp->regs->RTDM = 0x00000003; // Slots 0,1
" t/ s6 n* @ s& _0 F5 ` mcasp->regs->RINTCTL = 0x00000000; // Not used) m, F9 N! p& p
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256( ?) J& A# N9 f& @- X; u2 |
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
! E$ L% c+ a3 f$ s: B! ` mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
7 d$ y1 T3 i( v6 d; \4 E x mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word2 O1 G% I8 f$ A% ^, t! _ b$ V& I
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-167 p. f8 K) U4 I( ]2 U
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
& ?+ \' h' t9 D! r) X$ R: P/ D mcasp->regs->XTDM = 0x00000003; // Slots 0,1% \! _. M7 h+ ^9 J
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
0 I8 { d; P; `( {% v mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256' |( \& q) s4 p% x, x! C+ b0 t: _
1 `, V6 l& k: F4 j mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN. k- B3 L/ E- z. Q6 k
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT5 G4 r* n8 K: w# m$ g
mcasp->regs->PFUNC = 0; // All MCASPs4 ^) |" ]( `. V$ O4 Y: J
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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: |2 L% b$ x! e& E4 O' a5 m mcasp->regs->DITCTL = 0x00000000; // Not used
1 ~0 g0 E4 V+ {1 f: X mcasp->regs->DLBCTL = 0x00000000; // Not used1 [. W m- _$ T) w9 K$ a; t, S
mcasp->regs->AMUTE = 0x00000000; // Not used& @9 \. L8 O' I
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/* Starting sections of the McASP*/
3 ^# e' v% \0 } mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
: G4 U1 y1 ~2 n3 j+ o/ o7 q. U4 x while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); % Y5 R% Z# A. e
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; : N) C! ?7 }5 v& m/ N7 J: J/ _& Y
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );: A( O5 x* K, i8 n. ^/ e
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 0 h0 f4 z0 F$ I( ^4 t
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
$ K, g+ g8 Q# P. g7 q+ E mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
K5 n( y, V1 D/ g9 X while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );' \% s" P) r: p
' A% |$ w5 d; Z/ Q2 ] mcasp->regs->XSTAT = 0x0000ffff;
9 @0 ]1 @9 t X mcasp->regs->RSTAT = 0x0000ffff; . K3 ^% y6 e% M- C' b6 a0 |7 J5 @4 W0 W
) ?/ J9 I2 d. M4 x* g3 u mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
5 L' i6 h( e- ?$ b, G- e while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
) u: `! Q5 y2 _3 e mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 3 r3 x7 ^, C7 t$ F$ X, K
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON ); z# G! ~% @( U5 s
8 n$ w: G2 q- \( i* e7 B3 j /* Write a 0, so that no underrun occurs after releasing the state machine */% }* o' K5 j5 P0 j
mcasp->regs->XBUF5 = 0;
7 }6 f/ p* I3 O mcasp->regs->RBUF0 = 0;4 N4 v8 ~1 o2 q; U" N. ~ p
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
" [3 w# u' o, F+ w) k' k: R3 d while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
% o5 E# V9 b- M3 S: }( e mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
' v' J; }. v; \0 {, ?. | while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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0 k; D7 q, H" v( _( R, R1 P- j mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 2 ]' n0 @ ?2 \" N
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );/ x: j* S) G, }7 ?( J6 v8 r
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
- o. U4 e. `. V0 D8 G while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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3 A' X, A* m& O% V6 Y% a2 M CSR = 0x0000;; E. Y# z' n ~4 g: L+ w1 ]! _
INTC_INTMUX1 = 0x3d;+ {8 R" N$ M% k; }# {" J
ISTP = (unsigned int)vectors;% ~$ h+ J' t! B
ICR = 0xFFF0;
9 M) i& Q) s/ P" J9 r+ E IER |= 0x12; 6 d7 d. v4 z+ w s- g
CSR |= 0x01; % \$ s$ T S& h2 g
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还有就是两个输入输出函数:5 l# z0 D9 Y& T4 @5 Y% W0 ?
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
! G/ e8 J* J# t( {1 _. f8 ^7 `4 a MCASP1_XBUF5_32BIT = AIC31_data.uint;, R% `6 N( W2 C
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/ u( a" k0 q1 q6 }% yInt32 input_sample(void)9 w6 S% p/ q9 \) y
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AIC31_data.uint = MCASP1_RBUF0_32BIT;! ]. \0 C( W5 H5 C: E2 e1 \: g) h7 \
return (AIC31_data.uint);1 s; c$ }; P6 M* a
}
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