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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:0 o9 {6 c/ T5 o, u3 b
main文件:
4 [7 O) k! a1 }0 d/ [! Sinterrupt void interrupt4(void) 7 I( G. t' q" h0 e: o' s7 R
{
k5 F5 b) l" P" A% G- y Uint32 sample;) J* s' b; W2 e0 _% b
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sample = input_sample(); // read L + R samples from ADC% A- p, P4 o2 z' K1 v
output_sample(sample); // write L + R samples to DAC " ~. b- I' t# l6 c0 }8 a
return;. K$ _- r9 H; W# |0 ?% P7 ]
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. \) m$ U" H- H- B0 w( dint main( void )' B/ Q) m1 ?2 Y# |- B/ V
{
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, M) G6 q9 N- G" a) Q' i /* Initialize BSL */. d5 l Y; s* x$ a% G' F1 V( m: t
EVMC6747_init( );; j# f- |/ g& P. |+ ]! }
/* Call evmc6747_intr function */: {2 K# y& V1 C9 ?0 L
aic3106_init( );" K' D v R* j0 `' K( M# ^
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( ?9 q( P8 T3 @% t& H6 W+ b( y8 ?
/* Initialize MCASP1 */) Z; X( U( Q& M9 S; I. B
mcasp = &MCASP_MODULE_1;
2 d) Q5 }" X7 i/ n$ h3 g mcasp->regs->GBLCTL = 0; // Reset5 v5 S6 F9 M+ D$ f4 Q
mcasp->regs->RGBLCTL = 0; // Reset RX) f! X2 I2 i0 [! D% M: o
mcasp->regs->XGBLCTL = 0; // Reset TX) n% w; S& {- a
mcasp->regs->PWRDEMU = 1; // Free-running' M8 W* x4 Q0 d6 T# O' }6 @" U
// configure McASP0 receive registers1 K; m3 C5 Y' f0 t" l
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used, I7 V0 X9 ^' u j
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus2 ^: r) a, T0 b. L
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
( g6 Q: J; F' l# [3 e mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
+ n8 z' Y0 h+ A5 K: x( ^ mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)% D) _: X5 Y/ X6 j: \& O
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
& g8 a2 v9 G4 T; y mcasp->regs->RINTCTL = 0x00000000; // Not used5 {' b4 y" o$ c9 t' K4 G
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2567 j9 w- {% s9 [$ y! A7 C
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used5 m1 @$ S( M+ p
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
* Y# i8 }- J) V+ h mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
. v, p0 g, @/ R: n3 k mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
; @# J% a4 O: y. c; L5 [ mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK9 U, F. p9 x. W3 c* O( Z8 b' U1 _# T
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
* \- G1 \$ A. d% j mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit8 E; o: k- @5 Q* \; |
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2568 Q0 I' M1 r+ p
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN/ A+ D W/ {# ?' F; i0 p
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT# N" M' w$ h( p
mcasp->regs->PFUNC = 0; // All MCASPs! C2 v- Q* G1 R
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1; d) P3 z, D* L
8 P3 @+ ]" a- m5 L R+ ]5 D6 C mcasp->regs->DITCTL = 0x00000000; // Not used
1 I! M+ D5 M' c v9 [% L8 h mcasp->regs->DLBCTL = 0x00000000; // Not used' S: K0 ?/ K6 r) Q$ v9 q% l7 ]( `
mcasp->regs->AMUTE = 0x00000000; // Not used
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* M0 v7 t( S& T" K& s- b/* Starting sections of the McASP*/" _9 T1 R7 ?2 L3 f& B7 `8 ?
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; ; Y5 z' N2 Z/ E$ V# Q
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
- w0 Z D+ W8 e$ i mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
$ E9 a# ]4 }+ N! f/ k while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 1 T" {( i8 X8 K U$ D/ b
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );/ D8 y. }8 Q6 d3 `8 S' M
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
W4 d6 B( F% R2 I while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );( b' E( E' n1 \" U* ^& N5 w
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mcasp->regs->XSTAT = 0x0000ffff;
) l+ j" t! e5 ]) u7 w% y1 |! N mcasp->regs->RSTAT = 0x0000ffff; 0 ` A2 @8 `! N% {& A/ A6 \6 a
8 n% Y3 H& ^4 L/ |# v' P mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
5 @9 ^' f& r3 H+ @& ^ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
n1 e- p" q6 G" v mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 4 R! d8 x( m) w, ~
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 */; m$ v9 Y0 g+ |* g- q
mcasp->regs->XBUF5 = 0;
) k# v+ F# B2 U$ c( y mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
$ j; d6 h! q' G' L1 { while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );2 h/ i$ _( Q/ p1 {# a) R2 |
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; & F9 G& I+ y- b1 T4 a, P3 o$ o. H
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
0 d0 n8 n; z& K while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );5 U- Q( _4 y' t$ i( [+ I
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; . S2 M* B3 W. Z6 h3 ~6 Q, l d
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000;' I5 ~3 J5 k* y+ _
INTC_INTMUX1 = 0x3d;
; V# E- Q" V( O ISTP = (unsigned int)vectors;
" F7 K' Q# b: A ICR = 0xFFF0; ( D( d/ \) U' L" Z
IER |= 0x12; 6 c( X* _" O9 m5 {
CSR |= 0x01;
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还有就是两个输入输出函数:. N/ a+ r' h" g
void output_sample(Int32 out_data)9 s) R/ @* a. [; I. R2 X% i' |
{( R/ M C5 s/ P) w0 l
AIC31_data.uint = out_data;
! h& x6 a8 P) i3 H. R MCASP1_XBUF5_32BIT = AIC31_data.uint;; w& q( o8 X: V4 u( r) ]: a
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Int32 input_sample(void) | ]. b+ E+ V$ F5 N+ u: p
{
' w9 z/ a0 Y/ r% j5 ?$ x* e AIC31_data.uint = MCASP1_RBUF0_32BIT;
4 P. |0 y& C( Z5 H+ z! l! a return (AIC31_data.uint);& L2 J3 [8 `( m* ]/ P" t* t/ z" B
}
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