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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:
+ u. _ l6 ?( V. Z/ gmain文件:- U4 a" a/ X/ `' w2 i# I1 m
interrupt void interrupt4(void) : _4 n5 X: A S8 x2 e1 `! c# B
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Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC# _8 `' p R3 a( q. P
output_sample(sample); // write L + R samples to DAC - j+ H$ o. G4 K" `" i- v
return;7 x0 a) m& p4 V$ m3 p3 Y
}
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int main( void )
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/* Initialize BSL */. }8 P/ _+ J. T* F Y; S
EVMC6747_init( );* @+ ^: C, c- J8 J+ m: C
/* Call evmc6747_intr function */
5 ^' W8 y8 `' u& m5 |$ E* n! B aic3106_init( );
. J2 ^3 J ]5 C, h while(1);
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9 R, T3 e9 t7 A6 [ _9 J% R- s* {9 i- baic3106_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
9 {" q! L& m" Q. y/* Initialize MCASP1 */
: @7 H+ U/ w) S/ m5 S mcasp = &MCASP_MODULE_1;; T3 H/ H' O" p, J& M0 S
mcasp->regs->GBLCTL = 0; // Reset# |$ G6 ^ k0 m: j3 Z% N$ b# N
mcasp->regs->RGBLCTL = 0; // Reset RX) W' k2 F4 F1 Y. C _' n- k
mcasp->regs->XGBLCTL = 0; // Reset TX
0 t& a% i8 `" o7 h/ W9 H [ mcasp->regs->PWRDEMU = 1; // Free-running' l1 X# E' \! \( a: h+ a
// configure McASP0 receive registers
8 a1 H* v/ W. x4 L i/ y/ ]$ h! y mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
7 G3 ], [! f& L) m0 x0 V mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus) Q+ R1 B. d; t; U/ `
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word3 H J3 M. F8 @4 }
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)0 r2 {0 f* W& B: s
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
* C5 U, t3 H$ I2 Q9 |& `) O mcasp->regs->RTDM = 0x00000003; // Slots 0,1
2 Z4 H4 c% W4 ~, f mcasp->regs->RINTCTL = 0x00000000; // Not used. Y" c3 p! {4 k: a
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
2 c" q. h4 m/ \$ [2 n3 S) H4 i mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus- E9 [/ q, ]# O3 [$ F
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word7 |% G: |. P* q. k6 t: w2 Y
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
* V8 h* y4 w3 r mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
) K4 Q4 B0 I ]' w6 `' q X6 m mcasp->regs->XTDM = 0x00000003; // Slots 0,1
! L2 p, e! _0 C. ~; h mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit9 `5 D; g8 }/ t! e, X% v
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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8 m- R, x: }' W6 ^" ~ mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
! N% N1 s" W. |# E; [5 f mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
- q" h7 t8 A2 E mcasp->regs->PFUNC = 0; // All MCASPs8 e" m; J! T% S Z2 Z
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1: j" L+ T! a0 l' m- q7 Y
/ Y! v% f( u3 {# R2 E; ^ mcasp->regs->DITCTL = 0x00000000; // Not used
5 s0 u: U% ]+ {$ {. w4 Y mcasp->regs->DLBCTL = 0x00000000; // Not used
: @# \$ R" i- P. j! ~ mcasp->regs->AMUTE = 0x00000000; // Not used: a% l# g5 B9 W! O1 h
5 s/ ?# x6 Z# T/* Starting sections of the McASP*/
5 m9 Z* w( F3 X( V mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; ! e/ I2 y) U! H b
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
: z, Q7 o3 c- w" h6 { mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
3 m$ H$ S+ i; `3 h" l2 c6 c while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );( _& t! B+ D, R( g! `. a# v
1 b! A, K( N. I8 N) P/ Q/ V mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; & {0 A8 [+ }$ s
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );7 N- }3 T. W; \3 S
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
) [& i* b6 R" }+ I$ n( f while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; # d1 g3 V: ?. U8 Z- {) a
mcasp->regs->RSTAT = 0x0000ffff; " O( U1 Q7 c& T/ E1 Q8 H) K5 ]
# {& H9 g4 y7 e9 X' \ mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;- H" p* S* S& ?$ r9 `7 j; E
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );. V" T' {+ `" r7 q( X8 n( a
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
: R+ k6 n- K$ k/ @+ F C# Z while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );, X8 s7 {' W$ f: \5 G( S
. ~7 q" Y8 Z7 f8 a' x /* Write a 0, so that no underrun occurs after releasing the state machine */, ?) Z: \3 p% P2 \
mcasp->regs->XBUF5 = 0;
) F" U6 T/ f; ^- n% o& f mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; * {- ~ k1 u) {: |: E S
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
! s1 g2 ^/ B0 i% c0 Q mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; / B0 t2 s8 G" K" W3 Q
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 4 v: i- g, o5 x9 ]' A7 {8 c( a
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
# ^0 M7 o# }' ` mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; % L4 ? {7 P" u
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );# {( w7 K1 r1 s6 f! J7 P
% q- o; J+ C O$ ? CSR = 0x0000;
' L; c/ J9 Q1 c+ t) s INTC_INTMUX1 = 0x3d;6 m$ I9 z' W0 h, z+ x9 S
ISTP = (unsigned int)vectors;
( t& ^& X J8 E" X ICR = 0xFFF0; 1 a- z% }5 x" L
IER |= 0x12; & o: {7 k, O4 V! C/ }
CSR |= 0x01;
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还有就是两个输入输出函数:$ T5 K4 ]; @! z
void output_sample(Int32 out_data); y8 M3 \ @+ W
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AIC31_data.uint = out_data;
5 N- i9 e: X: p) I4 l MCASP1_XBUF5_32BIT = AIC31_data.uint;( p7 I" Z: A) F+ ]6 Z2 q
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. _( A3 O- l0 N4 SInt32 input_sample(void)
; \7 u4 ^0 m7 M! T# `{
. o! r# j0 t6 L* B# e! }1 A AIC31_data.uint = MCASP1_RBUF0_32BIT;
3 W9 |1 @& @- k0 W* E5 m return (AIC31_data.uint);2 v; M$ z2 `8 P8 l* W
}
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