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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:
! E; Q( t Z: m+ tmain文件:" N% j8 u4 L% M1 ~- d# c
interrupt void interrupt4(void)
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Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC
( K- M2 B+ Q8 O: z7 D output_sample(sample); // write L + R samples to DAC
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* o, y" _ _' g9 V1 Pint main( void )7 ]) n3 M; i6 n; y
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; `1 D, X$ H+ g9 J5 c! l; f /* Initialize BSL */
4 ]7 c: D0 F- c EVMC6747_init( );
' }0 o [/ T' q4 p; X /* Call evmc6747_intr function */- ~/ Z/ \( I! e4 j, F3 D
aic3106_init( );. ]: F( p; J- K* x# o" M
while(1);
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% L$ u& l& I) _+ Laic3106_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$ O* @6 G' i6 [
/* Initialize MCASP1 */
6 b7 t" m! _6 c% A mcasp = &MCASP_MODULE_1;
) z# p f# |) ]5 \3 j6 D4 j mcasp->regs->GBLCTL = 0; // Reset }0 C5 N( B. B3 F# g
mcasp->regs->RGBLCTL = 0; // Reset RX& d6 R. `, p0 R( j5 T9 B7 k4 x
mcasp->regs->XGBLCTL = 0; // Reset TX) [6 u9 d( H0 W2 z4 `
mcasp->regs->PWRDEMU = 1; // Free-running
& q6 m( x8 |# H* \+ d: b // configure McASP0 receive registers% @2 V5 h, y1 ~5 U5 y% ]
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used0 x) E* L+ t3 S$ \( u
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus. _; h; X4 W8 }) i7 U
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
9 P6 y; ~4 \. f4 n" n7 W" [( \ mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)4 J+ u4 N) n! s! f) V
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
% Y7 ]8 f- M+ ~5 b" y mcasp->regs->RTDM = 0x00000003; // Slots 0,1
* B1 Q6 `- u% q* X/ f m# d mcasp->regs->RINTCTL = 0x00000000; // Not used
+ x7 d4 T: u6 G/ K mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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/ _9 u* M7 G" w/ D* o6 x mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
( l- P2 W6 Z h% F mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
( u" r0 t( @- r1 L6 P* f mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
! W0 {1 ]5 A/ W4 v4 Y$ T8 \. c6 a- u mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
5 @+ X( V9 C1 ]6 D- n: a7 K mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
/ ?( }) Z, }5 J5 Y mcasp->regs->XTDM = 0x00000003; // Slots 0,1- }, H9 [5 |; R
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit' l2 D2 q$ |+ ^" r0 q
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN5 G) C/ Z1 q8 S4 y
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT) \# W5 S! J) e- f: @9 z# f. B% S1 U
mcasp->regs->PFUNC = 0; // All MCASPs9 d: w+ N( v1 \5 s: J3 E6 t
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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, M6 H& n) [3 N! }# s mcasp->regs->DITCTL = 0x00000000; // Not used: ?8 |& Y. T) Q+ |2 C
mcasp->regs->DLBCTL = 0x00000000; // Not used
& c6 c6 M: F% \1 ? mcasp->regs->AMUTE = 0x00000000; // Not used ^, r* v& u1 u9 x B# h
& G# }. o. S. C0 S* ^/* Starting sections of the McASP*/9 R1 k0 j; v R+ R0 g! ]4 q
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
/ ~9 S! V# [% c, t9 o# Q: O while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
- Y3 C" \4 q" V; M/ }0 t) Y mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
- |* w' ~' G7 q8 z1 b+ M) n" ] while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );/ m* T% l. ]3 s8 ~* @6 W- o! A$ J9 h
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 9 C( L$ D: h2 G: M) U% `' U6 A
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
5 M0 M* M2 O. B# z1 g, a6 u5 q mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
6 D* K5 D% Q- h. ]4 r while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );: k; r8 W) @. @
2 p5 U e j/ m1 p+ T mcasp->regs->XSTAT = 0x0000ffff; # a, I; z% z0 _7 V" b
mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;; Q3 Y+ R. }- b7 ]
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
; y& V0 l1 a2 t. Z$ t+ O mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
: J7 \0 g2 q7 y( } while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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/* Write a 0, so that no underrun occurs after releasing the state machine */+ [* p5 a- H( G
mcasp->regs->XBUF5 = 0;
7 X1 s) M7 s" m0 X) y mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 7 W, O4 E: P, G
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );5 a8 x4 f7 [/ t9 S" M) w6 B# ^
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
% r* f9 n" Y- j while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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2 |5 J5 |7 \# n! _7 m0 b mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 0 T. q. b1 |" t" q% {1 ?1 B; b
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );3 H+ A" w U2 [+ Z! w/ H) g1 H
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 5 s7 s* V# Y9 x5 ?; H Q- o- s. l
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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' [: d) m. h. A; x CSR = 0x0000;
! m7 O/ n1 Y6 T S0 r7 ~0 c INTC_INTMUX1 = 0x3d;9 {# t# C5 _$ m, X& j' L
ISTP = (unsigned int)vectors;
1 Y7 E9 _( R: L$ }- y$ H ICR = 0xFFF0; 2 }6 x0 W5 W- ^ d1 j
IER |= 0x12;
% q1 O$ t, A0 w0 V- y4 K% }& } CSR |= 0x01; " Y5 e$ x# U. i9 P8 D" ~
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6 j5 l- c+ p/ p k k8 K) E4 r+ I9 j还有就是两个输入输出函数:1 O5 x! K8 [9 K$ u. _# m
void output_sample(Int32 out_data)0 E2 B" M+ e# ?4 I5 P0 J5 u& y. Z9 U
{
; r g, h, r B R3 A4 W( i AIC31_data.uint = out_data;
- s- n5 V# w, r8 G4 w) w, f MCASP1_XBUF5_32BIT = AIC31_data.uint;; ~+ V' k6 |. D! x9 Q2 m1 b3 N
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Int32 input_sample(void)
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. J) j0 T9 S( w2 q0 p2 E3 x1 I AIC31_data.uint = MCASP1_RBUF0_32BIT;
! P% g9 V. Q# [ return (AIC31_data.uint);
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