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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:3 |" a( P2 F: {
main文件:
& a7 L R, l: j$ j! W! ]8 minterrupt void interrupt4(void) ! }/ F8 M2 P, G4 z. J" f- f
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Uint32 sample;# i* h" w0 L& x1 R- ^5 \: Z
. _% I! j# L; ~8 ~$ ]( `+ m& [ sample = input_sample(); // read L + R samples from ADC
2 o0 X0 H$ B- U+ @0 |" p K- q8 u x1 z output_sample(sample); // write L + R samples to DAC
! _& i' W3 Y' o- d8 \ return;. |$ T+ a6 K5 h5 T& K* m
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6 s6 {4 @+ w/ W) ~( W4 N2 Xint main( void )
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- s F" r: Y$ W- M% C /* Initialize BSL */* X" I9 q7 e" I; C! e4 h: v
EVMC6747_init( );. S9 D/ ~: n- ?) r1 O2 E' ?- _
/* Call evmc6747_intr function */8 a4 [: V* P* p$ N3 D6 Y
aic3106_init( );! X$ g8 A+ E3 Y7 E
while(1);: ^. {6 [* ?) L! z/ h
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5 r$ L J5 I* ?! A+ j. Qaic3106_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
/ |5 \8 [, C1 l6 l2 P/* Initialize MCASP1 */( H; e6 D$ z6 F- O: O
mcasp = &MCASP_MODULE_1;
3 W* N2 G) m% ^: F6 Q+ D mcasp->regs->GBLCTL = 0; // Reset3 F1 c7 h$ [7 ?- M
mcasp->regs->RGBLCTL = 0; // Reset RX
1 ~" o7 N% D6 x* a B mcasp->regs->XGBLCTL = 0; // Reset TX# X4 e4 S/ x2 y
mcasp->regs->PWRDEMU = 1; // Free-running
{* S9 c0 G# @4 o4 C // configure McASP0 receive registers _- ^$ ] D) t3 q6 N; ~9 [
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
4 K# Z% X! o1 E' z: s mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus3 U9 j& ?* } D1 C: Y3 T
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word/ f7 [! M8 O, H8 w' s2 T
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side); }# J- w6 Z( B
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)0 v' }( D% M9 t; g# T
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
# A' s. Z6 R( R+ y* o4 a, @ mcasp->regs->RINTCTL = 0x00000000; // Not used
7 T/ o; ^* w1 ?$ y% }& _$ B& P2 A8 z1 z mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used; E3 U: d! k8 Z5 z2 i0 j+ o/ x
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
7 u* V$ Q E1 u) J' J" u& ~ mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word! [! d5 o n2 ^- j9 \- u, A
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16( o' T: B5 ~. u
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK# ]: w: c+ d7 p: t
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
s/ O' w& J9 |( L$ n K$ ]: @ mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit+ k. I, M9 A: ^' ^7 r
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256! `; N# V3 {% N* W
& g& t [; \" D3 x: A mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
$ q/ p' H! c9 ^ mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
: H9 F' ^7 C) q$ Z mcasp->regs->PFUNC = 0; // All MCASPs
7 p6 R: C$ n y% [2 i, b! P4 [% H mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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# q1 A* H& A9 T% h3 J mcasp->regs->DITCTL = 0x00000000; // Not used) F+ [% \( p( Z( F8 Q0 t
mcasp->regs->DLBCTL = 0x00000000; // Not used
6 p+ n$ {9 l4 M/ ]3 r% E mcasp->regs->AMUTE = 0x00000000; // Not used
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5 I* C1 ^" \6 C: \/ N! b, F/* Starting sections of the McASP*/, \) f. G) u; P( I; }
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; + l6 m$ O- I, J
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 0 T0 @ }% H: S# R! i* ~
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
( @* d2 y" r+ @8 U& o0 k/ U* E) _ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
0 T+ W* D( O4 I2 E# L g- K# T while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
5 U2 k, h1 G9 x7 K1 H0 l; M; v mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
5 R. C& M, W+ Y# i a while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; 1 O- Y' e2 {6 s5 L7 |
mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;3 p$ c/ P& L" a4 N7 q9 @
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
6 i! W' Z! }) u1 K9 t, _ mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; ! |3 T6 H, F4 j) [1 y/ a
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );' {9 X( {2 c T* A
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/* Write a 0, so that no underrun occurs after releasing the state machine */
* }/ I3 w/ I2 ? r }, p4 W0 s u mcasp->regs->XBUF5 = 0;& ?$ ]' S0 U H+ s+ |4 j
mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 4 S( q8 P: Y" p z1 P$ `, b$ @7 U
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
7 E3 u! A, {: F mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
% \1 E X* ~" [& Y1 m& N while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );3 {; b4 T4 ~6 o
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
, l5 M( {' K' h8 X3 T0 `; j while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
8 u# x; Z, \$ i" w! ^ [6 B8 i mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
6 v3 w7 d9 u% A1 _6 z4 j while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );/ p+ _5 J* n: m% _/ s2 m( V
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CSR = 0x0000;- t" S& K' b, _
INTC_INTMUX1 = 0x3d;; q/ I$ @$ S! Q' q- R
ISTP = (unsigned int)vectors;
6 \2 W3 @& T3 f% O5 y0 w ICR = 0xFFF0;
4 s1 p0 y. y& G- U) F$ ` z IER |= 0x12;
6 m# ?& U/ I N. Y' s* Y CSR |= 0x01; 7 E2 L4 S# s) T, ]2 H5 o: g% M
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5 K% b( }: O) ^: K8 y还有就是两个输入输出函数:4 J) N1 }/ q) U" {" {
void output_sample(Int32 out_data)
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2 `3 `- m W, P' Y) h8 v AIC31_data.uint = out_data;
* l5 X7 u# ^4 ?; c% g" j( x W$ e5 @ MCASP1_XBUF5_32BIT = AIC31_data.uint;
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. j! Q9 s) H& j9 o1 C) _5 Z, \Int32 input_sample(void)9 X8 ^* L% z7 a
{
" L" I/ A% o0 ?* ?% Q M8 H5 N9 D$ ^ AIC31_data.uint = MCASP1_RBUF0_32BIT;
4 n( o& o% T' M/ p2 P return (AIC31_data.uint);
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