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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 u) D) f5 a. X
main文件:' T+ I- g. y9 D& S9 C
interrupt void interrupt4(void)
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, P* _* {6 ]! N, H' E" H+ i Uint32 sample;# j( _4 }4 n) J6 {8 Q
7 ?5 M) v' A# Z( y sample = input_sample(); // read L + R samples from ADC
: R: r% p- e) ] p5 W; Z output_sample(sample); // write L + R samples to DAC 9 l) V: ~' r5 [4 D6 n! v/ D" H& l
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int main( void )
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~ |1 D7 Y8 Q6 ^; r /* Initialize BSL */0 L. x" C- a. d
EVMC6747_init( );
3 D5 h# h8 x5 \1 ^0 d! D4 N1 {, a /* Call evmc6747_intr function *// T1 \) P% c8 U( v, _' }
aic3106_init( );; N' H; w6 m* M0 } j C7 ]7 d
while(1);
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% O" V$ s5 a) D* ?! }$ |% `. E- O3 Q" paic3106_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 p9 b# Q6 P. s
/* Initialize MCASP1 */
9 W1 M% B' G& U1 T7 s7 ^7 q; @ mcasp = &MCASP_MODULE_1;
2 u3 R- I, d: e4 ]1 ?! Q8 p# [) }- q mcasp->regs->GBLCTL = 0; // Reset4 I; r9 i l# W/ r1 N) h
mcasp->regs->RGBLCTL = 0; // Reset RX" k% |8 Q" u% I I
mcasp->regs->XGBLCTL = 0; // Reset TX
0 o; @: l1 ^6 `! C mcasp->regs->PWRDEMU = 1; // Free-running
; W3 Z- [- s( ^! U // configure McASP0 receive registers: X* D6 {6 q- y/ Y% I
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used6 N: c" V* n$ F9 ]. ?" I# s# h
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus1 a/ f. J+ F7 ?- F; B: `5 z
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
* H9 C2 y3 b4 n mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
4 M* h3 R2 R* \2 P" p mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side); v7 w D* t& ^8 `( {
mcasp->regs->RTDM = 0x00000003; // Slots 0,13 Q1 ]: ~ I" s% r
mcasp->regs->RINTCTL = 0x00000000; // Not used
1 {& g: ?! I" L) j5 _/ w7 c mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256; M! `& a' s7 ]0 j; q* _0 G
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used1 p* X$ w( z, m0 y0 y- F5 _ i
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus1 X+ X& i+ \1 W3 h3 d
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
+ [( E) A0 a; S. X1 Y& D mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-168 i4 X# F* k8 J% I0 U- M
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK6 z& {" U$ I- A6 q% {% r
mcasp->regs->XTDM = 0x00000003; // Slots 0,1: _' ^: N1 c0 E2 r5 ^* Y$ _$ M
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit. J5 `4 p/ c+ S, S2 [
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
) z( f/ a; e. H I/ F mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
0 N8 t# }9 [; ^; m5 k mcasp->regs->PFUNC = 0; // All MCASPs9 H" Z# y. J9 I
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1' G' S: ~* ^; l) d* O
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mcasp->regs->DITCTL = 0x00000000; // Not used
" a4 d6 O% w# Q c* y1 V* L mcasp->regs->DLBCTL = 0x00000000; // Not used
0 N: G M+ Q4 j# B! E mcasp->regs->AMUTE = 0x00000000; // Not used% j' d9 e- C5 y0 A, h# T
5 }! w; h9 z) g/* Starting sections of the McASP*/. h% N+ y: a5 P( P8 o
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
1 E! M: ?: ] o, [ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
# f% T) }: D/ p mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
7 e1 d$ t+ ^9 ~ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );" E. g* n f0 O; x4 n7 b
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
) W" T/ q9 ?) h3 z% c3 r while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );4 L; y& E( p' j% ]
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
6 k9 I- k6 g% a* w" b# G' l while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff;
5 H& C5 A6 k& s' H! i mcasp->regs->RSTAT = 0x0000ffff; ; p" p* R* X% b0 L7 ]. y5 _
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;2 R* T' T0 r$ J7 [
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );. f" b) G! \/ m# r, ^2 w
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 9 J0 K! z% ]/ g3 n
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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/ j; h* q( I T /* Write a 0, so that no underrun occurs after releasing the state machine */1 G. D( N* o8 ~1 O
mcasp->regs->XBUF5 = 0;8 B5 v2 t: Y! \: [* u/ J* T$ f5 x; R
mcasp->regs->RBUF0 = 0;+ X7 y% q5 @' [. ]5 q6 I% ?
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; ' P/ {, z0 V% M2 N; P6 F
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
8 v( Y1 V) j0 p) T | mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; # R3 ?8 M8 U' |7 [
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );" S3 u+ y/ [" V
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
, w! f2 f/ }& G7 M while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );3 L: c) j9 W7 f4 `6 R. Q
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; / C: G3 e7 ?4 E% o! G
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000;
( O9 s: f$ C- y2 O6 h INTC_INTMUX1 = 0x3d;
2 K- v. P5 s% g ISTP = (unsigned int)vectors;
1 a& Z! w4 B" @' D6 W ICR = 0xFFF0;
/ A4 k! b) r& G* d; k IER |= 0x12; : p+ h: S0 F% F# }
CSR |= 0x01; : V* M5 g: E* Y, v" @
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" F, ]# `2 d% |* d; h还有就是两个输入输出函数:
. K8 N m; d3 G# t) h+ R) |void output_sample(Int32 out_data)
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6 j5 X) |. }. @$ l# w AIC31_data.uint = out_data; 6 [7 z# [! K) Q l4 z
MCASP1_XBUF5_32BIT = AIC31_data.uint;2 Q S7 P. q0 y: \1 A2 d0 u5 A
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
. ^; P k" k' F& b( X& F7 s return (AIC31_data.uint);$ _6 B9 s; `1 O
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