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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:
, V; C$ \. C+ m9 a7 W- T& {# hmain文件:
0 H" e) X# |4 I; Z1 o1 b6 i( Dinterrupt void interrupt4(void) 6 b; B) K) P" v1 ]1 H
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Uint32 sample;* Q0 M5 V' b2 [" J h3 z
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sample = input_sample(); // read L + R samples from ADC
0 t; X) k. m4 @6 N9 l" S( | output_sample(sample); // write L + R samples to DAC
$ d0 h5 W, }9 L! ^" P return;
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int main( void )$ O6 B1 i# I" k) z0 \3 i
{
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/* Initialize BSL */' E. C7 U" {6 ^0 V' h, n
EVMC6747_init( );
" }- C; G. Y! d) u( k, C+ w /* Call evmc6747_intr function */6 `3 s9 y4 K; n! f
aic3106_init( );
# a4 ]( N7 g+ F8 Y! e9 T while(1);9 R; j+ p& [6 {
}
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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- u6 O9 C7 F, Z5 e. z
/* Initialize MCASP1 */$ M! i+ X( B* v0 _. \
mcasp = &MCASP_MODULE_1;4 z( ?) j/ w4 B$ y/ s
mcasp->regs->GBLCTL = 0; // Reset
( ?+ x/ O& P/ Q6 X mcasp->regs->RGBLCTL = 0; // Reset RX
+ g$ Y% b) |, r mcasp->regs->XGBLCTL = 0; // Reset TX8 z% u M# A6 e6 w i
mcasp->regs->PWRDEMU = 1; // Free-running0 q# n, \# H3 s) T0 P4 J, T; q+ x' I
// configure McASP0 receive registers4 U2 s- t* d" A, ]
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used! K% p' \5 L2 R! U* n2 c4 H
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
: ^: y2 e: _2 l) a4 @ mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word! M K9 g! [: v
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
4 S+ N( w$ x8 M8 c8 U. { mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side). V2 u0 R( a, K! I; }
mcasp->regs->RTDM = 0x00000003; // Slots 0,12 I( \ C. l6 Q# V4 P
mcasp->regs->RINTCTL = 0x00000000; // Not used
( R3 B* q+ h! D2 K5 M mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256/ ]- h' r0 _; J* o) ?+ E
. n+ X9 W2 u7 J9 c' B, V3 E ? mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used) \# P7 J4 m$ Z
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus" a8 O% R3 {& U8 U! U
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word! t- S5 F& f2 m+ h$ ^& N1 M/ o9 f
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
9 i! N5 n+ }' e% K9 ~: | mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK& z/ i y% A7 W+ |6 C) j w
mcasp->regs->XTDM = 0x00000003; // Slots 0,1" W. G" r7 E4 p
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
: V1 f8 t8 { s3 O" } mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2567 D- Y" K- _. B4 f- r' W6 f! c) D
3 D3 }" L0 U5 W$ d) e mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
4 p* @0 J l4 F5 t. l9 N! {7 i, E mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT ^/ b$ S, Q7 q. ~' z
mcasp->regs->PFUNC = 0; // All MCASPs- S8 W! k: ?/ w( x; |5 S, q
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX15 W1 @+ D( ^+ G
, P6 m0 D- i7 p0 A, W mcasp->regs->DITCTL = 0x00000000; // Not used) a; e; e$ h& _. i3 P, q
mcasp->regs->DLBCTL = 0x00000000; // Not used# m8 k! b0 r. U( G B5 |
mcasp->regs->AMUTE = 0x00000000; // Not used
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D y; _) Q5 ^3 _, \$ s/* Starting sections of the McASP*/
) M, o! C6 {+ k5 v$ s' n' b; t mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; . d0 K& a, b! I' \$ j; H, u0 _7 T
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); ( H1 [0 Q+ H/ l
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 0 d% v$ Y! ~+ H8 N
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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- O% P0 o8 }. n; z mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 4 H/ d5 e5 q+ i* C2 s" ]
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );9 f% x" Y ]. a( }
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 9 W4 j1 K1 D" z F% \% E1 K6 \
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );8 \* L/ n, C. f& h3 ]8 P4 b
4 ^% @% @4 v0 M mcasp->regs->XSTAT = 0x0000ffff; : a& y' [ O1 b+ N
mcasp->regs->RSTAT = 0x0000ffff;
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! M& N$ ~+ s B) G mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;; T1 v, v1 {+ f! L! ^! v1 D
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
3 \. R) s3 w% M# ` mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
- \' I% b8 Q6 r+ E9 i1 r while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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* f7 f6 D* K% H0 e: J. Z6 n /* Write a 0, so that no underrun occurs after releasing the state machine */. W/ M8 `8 _9 p2 H) Z3 H
mcasp->regs->XBUF5 = 0;
# z: i1 |, }9 N4 ~ mcasp->regs->RBUF0 = 0;% Q6 j7 T9 J* K, e1 A* h N- O4 a5 N
/ E, o' H5 l* ^, ~- e6 N h mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 3 ~- P2 S- `, M) l2 B% N
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
- ~, R; P/ C/ j5 g7 m mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; & h% C5 }- d2 w+ V8 O7 x
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );5 N! q4 h* X, n/ f3 {' k
) C+ j, q: ]0 e X+ e8 g! m mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
& N4 g3 Y+ w# i; j, ^" F6 ? while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );/ v3 u! }% I: B: U. r
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 7 T% B' C* c& M9 }9 A
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );! {; M9 M0 ]1 y0 ]3 P$ z+ ?) o
' V" d0 @1 C+ e2 u4 u CSR = 0x0000;
8 k) l5 p& E# Z5 N INTC_INTMUX1 = 0x3d;
9 {+ M( O: M# q ISTP = (unsigned int)vectors; U& m% k/ o+ H( U4 ]
ICR = 0xFFF0; 6 m& P6 t1 X6 o6 V* J! O. d
IER |= 0x12;
$ K! Q1 r" w$ W: R, o0 u CSR |= 0x01; / n5 K! L4 L& m$ g9 s
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5 a0 ^9 r) W( q& b还有就是两个输入输出函数:! q o/ _( G( B* K8 ^
void output_sample(Int32 out_data)5 c- O0 y' q* U8 L8 Z
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AIC31_data.uint = out_data; 0 G. O! @) n/ a" ?0 X
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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0 _) e* A) o3 U g# @ AIC31_data.uint = MCASP1_RBUF0_32BIT;
: N) J# N: E V, [$ P5 \# p return (AIC31_data.uint);: Q0 p ^8 ~6 G4 c. e
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