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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:5 a1 k' J0 T! H" p" i
main文件:; R+ r) P$ c8 c* r1 P) H( W
interrupt void interrupt4(void) ( I% K7 |0 Z/ _& g! Q: ^! [
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Uint32 sample;
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[4 o9 n, B2 ]2 Q' U' h% D- ^4 o sample = input_sample(); // read L + R samples from ADC6 g2 w M4 [6 O, [! A
output_sample(sample); // write L + R samples to DAC + @) N+ B v6 d
return;# x K& d5 K0 e
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2 c) j7 A* \( `% Y* \8 p8 vint main( void )+ f5 M& J5 x+ ~+ j; W& D
{
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/* Initialize BSL */1 R( z4 \, D3 u) g: H
EVMC6747_init( );+ v" v0 H& y4 \8 T. G3 j9 B. k' g2 r3 `
/* Call evmc6747_intr function */* \0 E, n( E0 R9 v
aic3106_init( );
4 N' { e+ S; ? j4 F& Q2 ? 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# B/ J' g* Y3 h/ E
/* Initialize MCASP1 */, F0 ^* F% Z% A L
mcasp = &MCASP_MODULE_1; ~ g) J- h% v
mcasp->regs->GBLCTL = 0; // Reset
8 z! ?- w+ b) Q8 T% S! |8 o mcasp->regs->RGBLCTL = 0; // Reset RX
6 h9 q: v! z2 M6 a8 ]6 G mcasp->regs->XGBLCTL = 0; // Reset TX' X0 y. L. a4 F8 G& C% F
mcasp->regs->PWRDEMU = 1; // Free-running
) b1 z4 ^; a. e& ^7 _) l // configure McASP0 receive registers
_/ j; P0 f' X5 A8 D, [: A2 R+ A mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
F) Y6 {, R, ?) Z! _0 D mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus& A$ ^* U9 Q* ?
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word3 C' ?5 V/ D" b% @8 c" B j! F) ]3 y7 p
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
+ ?) d9 I3 ]5 |8 H, q mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
) m" Z% e% R' `# ^! E mcasp->regs->RTDM = 0x00000003; // Slots 0,1
+ u$ w5 H. c- _1 Q/ ?: S: m mcasp->regs->RINTCTL = 0x00000000; // Not used
8 J3 o& w' S/ M* [$ [ mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2567 I6 I! n4 u0 h
" d7 c3 c# [9 y7 u8 c$ b mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
2 f* c% c% [7 ]& X mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
% _" p; }* D6 n5 }) p7 i mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
. D$ r% ]% U, _7 X* X/ W mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16' l$ Z2 d9 t, ^0 P- ^
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK7 n% z; m7 G& i" G' ~
mcasp->regs->XTDM = 0x00000003; // Slots 0,1" ]/ r+ b1 R6 }# P: H( W+ N
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit4 L! d( S; l2 X0 h7 `4 H" ]" p
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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5 c ^3 O6 i5 |# b mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN: _4 Z6 i9 T/ m
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT; [/ G! A1 M5 U) {/ P# l$ h* }
mcasp->regs->PFUNC = 0; // All MCASPs: d- v0 @" \( a; p4 I
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used
9 N9 `/ z. q/ W9 K% X2 z% Z mcasp->regs->DLBCTL = 0x00000000; // Not used. V& o) s# e0 U' m3 P3 Z
mcasp->regs->AMUTE = 0x00000000; // Not used
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, t7 {+ J: y: {/* Starting sections of the McASP*/
5 c& a4 j1 A& }; |. d mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
! Q9 u. g/ J+ Y' |3 [2 z5 B while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 0 q: q" b$ h! Z0 U
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
|; b9 W% [6 _2 n. Y7 w while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );+ _! v- a& I( V( t* E
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
7 Q0 Y& l. c' F7 C while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );# C0 [- j7 B! ?# M6 F
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
4 P; K P' {* @' }0 F& l while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );3 C0 c, R' B4 [
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mcasp->regs->XSTAT = 0x0000ffff;
0 G9 X& [6 s% d! b7 r1 b1 t' l mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
. u" D3 Q3 \" v+ U) G while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );* l: S+ K& H3 E- l2 y' k1 g
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 4 i' K+ C: {4 Z( D! r3 o
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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% }! j5 C- N, ]# \ /* Write a 0, so that no underrun occurs after releasing the state machine */% O& o( }4 ]$ E, |- p% W p- M0 N) p
mcasp->regs->XBUF5 = 0;
& b( y1 W, h$ l7 W mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
4 L3 Q, S% ]3 s, w while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );+ V3 Z- ?% b/ N" S: j5 {: R
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
, g/ f+ ^ U0 p9 |+ J1 r while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );" L* L. i/ f1 g4 @6 W1 Q. l
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
% H' ^' _3 `! k G( y while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );7 B0 y5 B, [& f5 z8 h1 M! o
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 8 S1 }- g7 Y4 I+ f8 e2 U
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );4 Z& _2 q1 S* _$ }4 O
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CSR = 0x0000;6 |: |* ?$ |3 H1 c# W
INTC_INTMUX1 = 0x3d;3 @+ d, `, |/ S; P" X# r5 j
ISTP = (unsigned int)vectors;- `5 u2 I7 _! l4 _
ICR = 0xFFF0;
+ ^' a0 s+ y& U IER |= 0x12;
2 N7 u2 n7 e5 M& o9 f& o S# R, Q CSR |= 0x01; ) D E5 T& {/ J
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还有就是两个输入输出函数:
% i$ X$ Z7 C) m6 @! E% n$ }7 O- d! Jvoid output_sample(Int32 out_data)
0 M `+ `4 `9 k{
' T# G/ ~# M( l1 |9 H AIC31_data.uint = out_data;
& v- N9 Z6 y- p, t1 Q8 k MCASP1_XBUF5_32BIT = AIC31_data.uint;2 @ B1 K+ l: W. s9 a
}
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2 g4 p W" L! p- M" m( t' B3 wInt32 input_sample(void)7 z \) a9 u! o/ ^/ S
{
( z8 R5 W# Q0 G* L8 F( l AIC31_data.uint = MCASP1_RBUF0_32BIT;& X" c! q" Y: l. W) y+ \: N
return (AIC31_data.uint);
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