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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 l4 j, w1 J' B( S. u% |! Emain文件:
& H# R( b9 e5 [% ]8 ^& _* \interrupt void interrupt4(void)
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2 |, ^+ v- X4 ]3 ^( H4 [# g Uint32 sample;
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4 G- ]/ `' V2 r5 F, q sample = input_sample(); // read L + R samples from ADC
, `, p8 M5 P* x: r output_sample(sample); // write L + R samples to DAC ; N4 i! A) }: q% Z
return;
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* S; H. f- j3 w2 W0 s+ U0 S5 {0 Hint main( void )
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7 U& @5 j" I0 u4 D! U /* Initialize BSL */7 `5 }5 U7 [, z7 ?9 k& g
EVMC6747_init( );/ F0 {. {, Q3 }2 N5 Z) f0 S- D; \
/* Call evmc6747_intr function */# ]+ u1 p Y2 R, _
aic3106_init( );) o! K6 L/ t. t3 X' c
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; ?0 q- q) p0 U$ w t
/* Initialize MCASP1 */6 d1 c* ?2 P* E ^& U X
mcasp = &MCASP_MODULE_1;
5 D( W" a( U: w, u" q% F! R mcasp->regs->GBLCTL = 0; // Reset- r) G. K% t: M& U4 C2 G; c
mcasp->regs->RGBLCTL = 0; // Reset RX
5 ?$ K, j7 Q: W) | mcasp->regs->XGBLCTL = 0; // Reset TX5 {& X! y1 n9 `
mcasp->regs->PWRDEMU = 1; // Free-running
7 p+ q+ u+ f. O( G // configure McASP0 receive registers
( _/ }' ?4 y+ B4 n mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
9 @$ B! Z* w# Y mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus2 _: [( E [7 s4 M
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word* Q3 u/ E9 I! p# f' Z) R4 q" L
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
2 }- b. ~- N ~( T mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
) _5 \' y* P! t1 I9 U7 V mcasp->regs->RTDM = 0x00000003; // Slots 0,18 M2 P5 E2 S1 B, k+ T
mcasp->regs->RINTCTL = 0x00000000; // Not used
. z$ Z/ Z0 p5 }* } mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used- R( c! \* l/ \
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus( @6 v; i: }/ t r
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word" [ [2 r( c; f5 D* S J) I8 v" {
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16$ o5 `9 J w3 Y( i3 z
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK2 g4 r8 b+ x9 q
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
6 O$ A( J" N8 f) r/ m mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
: e! V# R( C" d; r2 ~ mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256* p8 k2 R+ H& G2 R4 D
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN. _7 m8 a- M" C
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT. u9 q( I# J* m* \8 l3 T
mcasp->regs->PFUNC = 0; // All MCASPs/ E: x7 T' F0 |( o
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1$ i7 i0 o, S. h Y% Z; c9 \
% m, P( C4 b6 G: w" X" h7 `( U% s mcasp->regs->DITCTL = 0x00000000; // Not used
, r6 n- k; j- F1 a mcasp->regs->DLBCTL = 0x00000000; // Not used: S8 q1 R" n/ y3 V$ }/ k: X, O
mcasp->regs->AMUTE = 0x00000000; // Not used
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/* Starting sections of the McASP*// p4 o ^1 y) y5 ], h
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 2 r& y8 q2 ]" v5 q
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); ' z' V t/ q& R+ f
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; & R; S0 ` B" o1 T0 |
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );% j4 g& e( X5 R7 |7 U
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
6 H0 b; N2 l; i; z while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );: g8 Y6 r& k' q( }5 p% m
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
* Y$ ~3 r4 {& e- V) }+ B0 R while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );1 z. l- u; L; {( E! R( G5 _6 I
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mcasp->regs->XSTAT = 0x0000ffff; & }# t5 ?/ `" ^* x7 f3 P r! A
mcasp->regs->RSTAT = 0x0000ffff;
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/ ~+ Z- j: V W+ L6 D6 K* J: m1 \ mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;/ `( e% @# e5 [! }6 A* b: R/ @
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
; R# B. r! T- f; } mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
9 O! }" I( Z5 T" {! d& z ] while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );, K& O! U6 p* h
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/* Write a 0, so that no underrun occurs after releasing the state machine */6 \4 |/ _9 h8 d5 r8 t- O& b
mcasp->regs->XBUF5 = 0;
( p$ S' @' |: Y" b; |' f1 R mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
/ j. R' m9 j+ F0 o" X/ E: K$ y. | while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
( C7 v* q P, \" _: @ mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; / _) q: A) U- F0 d' D8 s4 z1 t2 G
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );1 G. p) u% l1 n( E9 s1 b
4 C1 p, P7 S0 A0 Y mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
7 a" r8 B, `% Y& Q, Q' ` while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );4 j1 x" D+ b* D& p U( Y8 b
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 9 o9 q+ i! H- h6 h6 u% a4 N u9 a* u# a
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000;5 L4 C+ o1 o5 B8 L
INTC_INTMUX1 = 0x3d;" t z& o$ Z4 o: O' A
ISTP = (unsigned int)vectors;
9 f/ w) M0 Z5 y1 ~# q0 Y. e ICR = 0xFFF0;
, }2 @. T. m& e: \9 U1 u) X- C IER |= 0x12;
% q3 q: j+ e4 A$ B! p S; v CSR |= 0x01;
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还有就是两个输入输出函数:: V- K) D( v/ Q& {) L( n0 g- M
void output_sample(Int32 out_data)! u9 n% l, \& ^" H4 B- ?/ B
{
; F) d) H& o6 E/ z$ a& l AIC31_data.uint = out_data; 8 H( l; z4 M. @. Q' B' a; ~. T
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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5 X9 ]& j- B/ T$ w% b5 mInt32 input_sample(void)
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* j2 B0 \, D% o6 @: X AIC31_data.uint = MCASP1_RBUF0_32BIT;5 l. z# Z" V, W: Z& X2 O
return (AIC31_data.uint);
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