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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:
$ A6 ~8 `- q+ a* F' m9 kmain文件:
) {! [8 @' _+ ~" k( [interrupt void interrupt4(void)
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! K* d+ O3 q. S, Y Uint32 sample;+ D1 a3 j+ Q' a% E6 \! ^7 d) W
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sample = input_sample(); // read L + R samples from ADC
; O q: z" Q$ R/ g/ z) d output_sample(sample); // write L + R samples to DAC : x- f$ y4 g; G' T1 u6 L7 _' x* ]5 }' ]% Z
return;* G" T9 [; \1 b% y) G3 `
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int main( void )
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5 [: k# A- ?! z /* Initialize BSL */
( }9 i0 C+ j% P% w0 O! H EVMC6747_init( );
" Y4 w: @& }" }% c. }, C /* Call evmc6747_intr function */
, t' f& R0 W0 a3 O$ {+ W aic3106_init( );* o1 J* b* z8 G* g: R/ {% b# v
while(1);1 ?9 |' F* o H" w/ @( @
}
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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
" w; M: ]4 r0 _' y" K4 e# d3 W/* Initialize MCASP1 */
* E, j- y8 l L; g4 S mcasp = &MCASP_MODULE_1;
2 `2 J. ^) x Z7 }% g" t9 b mcasp->regs->GBLCTL = 0; // Reset! {/ C3 {8 m ~1 q% r/ \4 b
mcasp->regs->RGBLCTL = 0; // Reset RX- A$ _7 q9 W+ o" v z C2 k
mcasp->regs->XGBLCTL = 0; // Reset TX, {! `; P9 e) p, L6 ^) ?
mcasp->regs->PWRDEMU = 1; // Free-running
' [9 i2 K! H9 F // configure McASP0 receive registers
& q1 t/ s' C/ F! Y: y3 I$ S: r. G0 \ mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
2 P; F! |, T0 a/ c! |" N# O4 E4 L( I mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
! q# T- z( k; V v' j mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
\+ i7 m* M* O1 \ ?0 O9 [ mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)8 }/ ^( `0 S f1 P! v4 E- {4 k
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)6 d; d. [/ l9 G% h# j( c7 Z
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
9 F2 L' f+ i; a k. ^8 E5 ]2 n- a mcasp->regs->RINTCTL = 0x00000000; // Not used( ^; d+ P6 [: d# S, D# L4 E
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2561 L$ e) ^: g9 o* H
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
4 s$ N' l' R8 F" f/ P! g: [* ] mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
0 c6 R$ F, K2 ?" n9 q8 } mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
- V3 ?& `( b) {% b; Z& | mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-161 U7 L# B6 U, t
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK$ V7 P! n# C# n* a3 O) m
mcasp->regs->XTDM = 0x00000003; // Slots 0,1: H; E% z% Z, X- n
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit; U( [4 O' A9 S) C1 `7 w+ ?" p
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256, X+ y5 [% [, X: r' {# L- `
, ^/ o, J' s& b# j: Y* h9 y mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
' C, V e/ U" e3 n mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT( s* Q6 O l7 }$ l& V8 B2 a# G1 w
mcasp->regs->PFUNC = 0; // All MCASPs
$ ^( ~; L2 ?8 m mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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! V' l9 y9 j+ S+ ? mcasp->regs->DITCTL = 0x00000000; // Not used
) p- w5 X1 P" d mcasp->regs->DLBCTL = 0x00000000; // Not used8 N6 B& S2 s+ x8 `' u
mcasp->regs->AMUTE = 0x00000000; // Not used
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/* Starting sections of the McASP*/
8 J1 E# t# h6 q- ~ mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
! ^6 T7 i2 p$ o' R while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); * f; o* |" c9 D
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; . t# c' d n& U0 W" |6 v
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; : O. i* u% |! ^5 p/ i# `. J
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );& t5 U& Y( K8 S- r. [4 b8 Z% \7 U% \& O
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; / {0 M. M6 P, x
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; ' J3 f0 L4 p, e( e
mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;, }8 \- Y- i4 v0 }
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
`% ~' h4 s% S! b9 R mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; # g6 A( g2 C2 t7 G: C1 V: t$ G1 B
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );- z4 f9 E: k8 B' s7 z( w/ d' W
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/* Write a 0, so that no underrun occurs after releasing the state machine */
0 |' j. w$ n9 t mcasp->regs->XBUF5 = 0;7 P7 K5 ~! F& U
mcasp->regs->RBUF0 = 0;
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+ r8 W0 D- T6 ?# F2 {7 c mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
. B+ i c% T1 M: Z' | while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
! b8 Z) I* ^4 a mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; 6 M! g6 R! g# p2 K
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );7 [1 e2 P/ A l# ~, E4 F* [' w( m+ Z* ]
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
; Q7 S# H; b" P8 r# D while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
. H4 M# M, N! J9 g- B# k7 f mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
7 X0 r/ ^# D. h G7 A while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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" \) j* X, z7 J+ z Z% B CSR = 0x0000;
2 e [3 U. ~: Z6 V- i- ]9 i INTC_INTMUX1 = 0x3d;
3 ~+ u2 o, \$ T6 y: N ISTP = (unsigned int)vectors;
+ W7 O$ U+ A; y6 {; l ICR = 0xFFF0; 8 X" ]3 i/ w# j! Z- [3 o U
IER |= 0x12; 5 i; @* r) H4 P9 `
CSR |= 0x01; ' H7 h8 c0 X$ e; F
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还有就是两个输入输出函数:, ?9 q) K3 A0 [ A/ y( [3 K
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
* C" e% [ k( U( y MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
. Q( \2 @' ]1 t{
9 h4 N' j0 k3 J1 {/ n5 N7 H AIC31_data.uint = MCASP1_RBUF0_32BIT;. [2 s* H( S% @ t! G" V
return (AIC31_data.uint);* s6 n; ~$ @: V+ [
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