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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:+ y( |) I7 L0 |9 S, f) Z+ W
main文件:
2 O; G, ^- I1 S- S6 I H1 minterrupt void interrupt4(void) , `6 f7 J$ d- D' |& b8 q
{
; ?+ s5 b$ ^. H/ H d) F Uint32 sample;
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1 Y$ i: M8 Q) B+ t1 z- z sample = input_sample(); // read L + R samples from ADC- R& j# p7 H* c5 ~
output_sample(sample); // write L + R samples to DAC : t1 x9 x+ R! Z! u* V
return;
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int main( void )
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; s2 [2 L2 \$ o# {7 _ f /* Initialize BSL */
" c' a3 T* `% O7 l EVMC6747_init( );- `* c- f! F9 p' ~: g1 f7 w
/* Call evmc6747_intr function */" I0 y% O/ B3 [/ T2 f$ m
aic3106_init( );
$ N. P/ y, c6 C while(1);
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: }' |0 n1 s( `; g5 f/ Maic3106_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/ q+ P: B# S4 d: K
/* Initialize MCASP1 */
' F5 x- o v+ t7 j/ A, P mcasp = &MCASP_MODULE_1;, K7 P F- H4 g8 z0 M6 w
mcasp->regs->GBLCTL = 0; // Reset
$ Y$ l( m1 p: w5 O mcasp->regs->RGBLCTL = 0; // Reset RX
: O; H( x6 K5 J1 c# z mcasp->regs->XGBLCTL = 0; // Reset TX
/ ?) |( l7 ?- T5 [ mcasp->regs->PWRDEMU = 1; // Free-running
/ q3 b) v' F% N l* Q& P2 b // configure McASP0 receive registers, Q& b+ P6 \& e- D& H# Y
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used2 o2 C9 t$ @* o) D4 y
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
1 P8 y0 d' I6 ?2 |: N1 ?1 K& C. d mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word) o' g/ @6 j' t, \' K+ p
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
_! M4 ^2 D' K4 |7 c H mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)0 i3 {/ R$ O" t; }
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
v8 D' I% K& P8 g mcasp->regs->RINTCTL = 0x00000000; // Not used
+ o8 H/ F8 X. H4 }6 R- X mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256- @. h2 I" Q& t; D
5 o4 `3 Z" M1 b) D& B mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used+ }/ {2 `! M k% h3 f4 P: }
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
# j: j* p2 {# R1 e2 L0 K mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word9 d4 X- x- E' c) z0 b; ^! U/ H- z
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16* h d9 h5 B$ M# f
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK. D( m$ T' C3 z) P
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
. }8 T$ Z! j$ W3 z9 R. u mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit% a: B Q1 ?! P9 F4 O* L3 |
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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* k- T$ m; W' n, n7 W& c mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN. M! m$ Q5 x% I7 ~
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT" Z$ g) Z0 F+ s9 S+ d
mcasp->regs->PFUNC = 0; // All MCASPs8 S8 Z" n5 b2 m. F
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used0 c4 r+ `( y2 f( F8 [/ S
mcasp->regs->DLBCTL = 0x00000000; // Not used
5 [ f% ^5 ?! k mcasp->regs->AMUTE = 0x00000000; // Not used
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7 e5 Z" z3 s$ }' l b6 I/* Starting sections of the McASP*/# d! B) Z) o: i0 \; _: d
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
. r/ q7 O: x! q) L while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
) i, @/ m8 c; f! ]' S7 o1 b8 V mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 5 X: B5 I4 N" Z7 P2 m8 `; B
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; ! g; H2 Y0 C2 y* E) y; _
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
. E9 H- [1 I/ D b* D0 x$ g mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 9 M, V5 ^6 q$ U7 F: H
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );- K9 g7 S$ @! z4 u4 h
1 G# C- S: l9 y" G: Q3 @% }5 R4 B mcasp->regs->XSTAT = 0x0000ffff; 8 b3 w! a. i8 ?; o2 j
mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;: D- C, ^3 Y& a* M* [ @
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
; f) R/ d e2 I/ O- o9 r3 D9 M mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 1 s) F* w3 X/ x% B) v( Y+ W
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );9 ~' a8 b2 _+ {% [
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/* Write a 0, so that no underrun occurs after releasing the state machine */) h/ i* J% ? I8 R, K! X
mcasp->regs->XBUF5 = 0;
1 X* i0 F. ?/ Z9 U# L/ F mcasp->regs->RBUF0 = 0;, Q* _; a( U! d) Q8 w
$ Z1 l" B7 @/ u, U mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
% r" L4 k/ N$ I; X- K$ ^) G while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
2 ~7 A8 F e2 a; l6 J v' C8 y8 @ mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
, x9 I" Y j. F8 S' W* e3 B while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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/ {/ y9 u' l* q3 [: w mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
1 V4 ]1 Q) Y5 I) _' N while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
8 N; ]2 F# @2 x6 Y mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; & f* c- W0 e* ^$ Q. e5 L, F
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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4 y5 A0 Y/ K1 C# _& l2 N2 p9 p CSR = 0x0000;
, p- }8 M6 U7 B9 U, D/ [ INTC_INTMUX1 = 0x3d;
+ w$ z$ [1 d$ ]8 @) E: G ISTP = (unsigned int)vectors;, t6 I. w$ G! R/ v# }( r
ICR = 0xFFF0;
: v$ p4 C/ I. M2 @: ~$ v, E IER |= 0x12; 2 V' H9 ^" w8 h* t
CSR |= 0x01; ) j% _1 s( K) b5 _3 q) N) {- t2 s
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还有就是两个输入输出函数:) o0 l4 \6 y3 e) X5 W
void output_sample(Int32 out_data)
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% r p4 M9 q3 s. {5 ?9 f6 K AIC31_data.uint = out_data;
' l" t# e4 K7 \2 P MCASP1_XBUF5_32BIT = AIC31_data.uint;* R( @- S$ }: j
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Int32 input_sample(void)3 M) h2 b6 G' h( t6 f2 Y G
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
, |# _8 q7 D2 V return (AIC31_data.uint);5 |& M& J. T4 x, x8 o, e" q
}
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