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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:
! \# ]7 T4 R+ g9 l# }0 nmain文件:
2 E3 D& }0 Y) Z w- einterrupt void interrupt4(void)
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2 m% f( x1 r6 o$ t' U9 [ Uint32 sample;8 n* u G6 X" x
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sample = input_sample(); // read L + R samples from ADC3 P2 ~- Y8 V4 ^& ]( I
output_sample(sample); // write L + R samples to DAC 5 Y& n d" l; k7 s
return;
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int main( void )
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0 H1 O+ v' H) }: b7 D0 g" F" ` /* Initialize BSL */5 O7 U: Y/ u5 n2 t5 Z
EVMC6747_init( ); u; W6 `/ ` E8 O; X
/* Call evmc6747_intr function */
9 }% J5 n0 G$ l# g aic3106_init( );4 ~9 c! A0 |' P3 }- S E+ e8 _
while(1);
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9 w5 M$ A' P" L, w J- E3 D( R3 S! H6 zaic3106_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
7 {# d+ b4 K' M9 o: p) v/* Initialize MCASP1 */
" Z8 j# E2 a7 p1 J/ t mcasp = &MCASP_MODULE_1;* U r+ R# U4 i5 w* Q
mcasp->regs->GBLCTL = 0; // Reset
: Z- f p: Q, A: Y1 } mcasp->regs->RGBLCTL = 0; // Reset RX0 @. I8 v' k$ B
mcasp->regs->XGBLCTL = 0; // Reset TX
" r5 \& i& {; |3 c" d* A mcasp->regs->PWRDEMU = 1; // Free-running) g F' }, {6 q) J, U# D
// configure McASP0 receive registers
- C8 B0 ~* r5 Q# l6 p' K mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
; H. K( ~: @, J6 N* V* V mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
7 _" y& C1 Y. E2 _+ H* ?2 _3 O- ~ mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word0 g0 U8 V" g6 g; L4 q
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)& S$ X& ]' v" D
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)! K8 X+ r3 H% W* ^$ p" ]8 e/ c% b
mcasp->regs->RTDM = 0x00000003; // Slots 0,1" M3 m% s& m( F& @, N. x, o
mcasp->regs->RINTCTL = 0x00000000; // Not used, O9 ~+ U* x1 o2 m" v
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
9 I( D% A1 w- z1 S, ~- C mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus* O+ N2 a# P" O2 x
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word+ x; T" ~! ] o& w' j
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16: v5 x4 R0 }5 N& p4 _
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK4 _9 N; s) n5 q8 M4 t: i
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
% G( D. i. O, ~& T; m$ [ mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit& g6 m. I2 D: x# `6 W3 Y# n
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256' J/ h' \* q4 l/ w6 H& O5 g
. D( v! J6 { q mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN: V0 K6 b# v' A8 V8 @" ?8 A" A
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT( h* G3 ^) C" A* F
mcasp->regs->PFUNC = 0; // All MCASPs
6 _9 N7 Y7 l& y6 d- o mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1) D% }1 P/ R) Y0 D4 m& H. V* O
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mcasp->regs->DITCTL = 0x00000000; // Not used R! d& X/ v1 |, M
mcasp->regs->DLBCTL = 0x00000000; // Not used( M1 N9 |2 i" s3 h. w
mcasp->regs->AMUTE = 0x00000000; // Not used
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; F+ F9 s' V L& J) ?/* Starting sections of the McASP*/% p' g# y% w* J7 c1 D$ k7 j" E
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; * `" D; Y5 O' y; H( o
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 6 e7 K4 j: |. q
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
8 R6 x/ P: a9 q+ d3 ] while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );3 G9 |& c' v' {2 T: F$ K
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
2 N" _. n$ v( H# m. D while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );8 W7 W# i( ]* N- ?4 ~
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; - z! Q5 l' z/ R+ G( W2 R0 t; M6 c) Y; j
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff;
6 i A* W6 q6 i mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
; } c/ u' l! t) n$ g while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
; D8 t) P9 d4 F/ Q7 O mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
: H" L: p4 \: o7 \- R/ } while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );: P) y% D# T$ p; [& \ P& K
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/* Write a 0, so that no underrun occurs after releasing the state machine */: s( X3 c8 d; ?; L1 O# P
mcasp->regs->XBUF5 = 0;
, y$ C7 Q* n/ m* |0 C8 a1 F mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
) U$ G7 Y5 Y8 E" O* R- i/ t6 i while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
2 e- }! g/ W. a) ]0 x mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
5 @3 f2 y% {7 i {# K while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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j5 k+ u' m. o) F9 \. ^( O; W mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
9 d0 w; f+ F: P* b while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
/ X+ x3 Z+ Q8 n mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
3 f- [: m+ D! a while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );1 ^, S! C( k* \/ u) m
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CSR = 0x0000;* Z( t+ m/ \. I/ l
INTC_INTMUX1 = 0x3d;8 s. x7 \8 R1 A0 ^# j
ISTP = (unsigned int)vectors;
7 T" A- Q9 G5 p: p( f ICR = 0xFFF0;
0 \* L- c' s) V# i IER |= 0x12; $ ]) i+ F1 F2 J) b5 W
CSR |= 0x01; * p; n9 h5 p2 K; u1 T |: q
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; z- g! U s2 u6 B还有就是两个输入输出函数:3 n7 u: q$ F7 }# |2 O4 q
void output_sample(Int32 out_data)
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3 d) Z9 D8 s" d, U1 x/ B( y AIC31_data.uint = out_data; & ^: S% ~' g. S3 p1 O* s5 F
MCASP1_XBUF5_32BIT = AIC31_data.uint;7 L9 ^* h: l. H
}
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Int32 input_sample(void)
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; {/ i( \! p& g" r. M' I) l* Q `* { AIC31_data.uint = MCASP1_RBUF0_32BIT;+ @2 Y: G, ]% [: \. e7 w
return (AIC31_data.uint);5 p$ d! d2 M0 v5 Z/ y8 f
}
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