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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:
- `9 x1 A! }8 W! Nmain文件:
5 z2 F7 o, i4 I1 h. N: m l8 ^: Sinterrupt void interrupt4(void) ' u, |9 r4 m4 }- C, _9 p" [
{
, h+ e0 B" G* O" K) [! | Uint32 sample;
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( j1 ]& Y- G, N7 q! h sample = input_sample(); // read L + R samples from ADC/ `( p3 ^4 a- W4 u* Y8 T. Z9 ~
output_sample(sample); // write L + R samples to DAC ! d3 x) V: u% h. W, Z) {: ^
return;1 v0 l+ b* a' X i1 b* i5 l9 k( K
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4 V" c* h; X& Oint main( void )
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/* Initialize BSL */; K) f! A5 ]& ~+ i5 Z
EVMC6747_init( );
2 B$ F& f. h% Y* K2 p% Y /* Call evmc6747_intr function */
+ p, O, U; C; i5 c aic3106_init( );8 W- Q# t& O" @3 R" ?1 e. V
while(1);) G) {' M$ w9 J8 M3 X& j
}
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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
- M9 S8 F8 U) H; t6 s( d/* Initialize MCASP1 */( f* t0 Y$ p3 j7 Z( `% ^5 m
mcasp = &MCASP_MODULE_1;
2 T; T7 p& z+ o- n mcasp->regs->GBLCTL = 0; // Reset
! S9 l% ^# ~! u$ Z0 w+ \ mcasp->regs->RGBLCTL = 0; // Reset RX7 j7 Q( [5 w5 ]/ A0 B) w
mcasp->regs->XGBLCTL = 0; // Reset TX
) r1 `, C% _4 W1 ?7 [ |2 F1 z$ m mcasp->regs->PWRDEMU = 1; // Free-running D, e! V8 R. L
// configure McASP0 receive registers
5 u4 V+ c Q+ H, T' ^ mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used2 }" n/ H' c: T4 u3 }. x9 p) K1 {
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus$ M6 R. e! |( F \8 x
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
/ V, Q, o0 e2 ^: t mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)7 a5 C& @8 O5 w+ n* }
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)5 i' m1 Q! c. ~( K( C
mcasp->regs->RTDM = 0x00000003; // Slots 0,1; _1 p) u, I: ]. Y1 C" w
mcasp->regs->RINTCTL = 0x00000000; // Not used+ f# z* E4 w8 L) W2 m
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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8 m' y6 Y* D: s4 ?2 Q( B( Z) }$ e mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
9 f+ ` t* @- s5 X- x" _7 T mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus& b9 t& N& N- W' D
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word2 a' |" V0 i# b( d2 J$ J' }$ T
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-167 h+ N5 C. `, Z) S
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
+ M4 h" i+ q' k! U5 c" B mcasp->regs->XTDM = 0x00000003; // Slots 0,1
6 G% U6 {+ g: f% q. F8 k7 L mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit$ k9 }, a: v y2 B9 V1 K: q0 \
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2563 M- w% @& e7 T9 z: z4 z& [. @
/ c1 D- o' Q7 \6 M6 m j0 m/ X mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
) M/ N6 A' P) T: M( `* y& W9 r mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
0 G2 l' c8 S, |9 N5 ?/ f" `4 [; d8 G mcasp->regs->PFUNC = 0; // All MCASPs& f, ^# L4 L0 P1 X9 ]1 F
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used
, f( ~3 [7 l) u8 S8 s$ w mcasp->regs->DLBCTL = 0x00000000; // Not used
3 n' ?+ z$ k9 G+ c3 r# a, u mcasp->regs->AMUTE = 0x00000000; // Not used
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( z3 X. \7 Q/ N9 l/* Starting sections of the McASP*/( X+ Z& T2 |# ~) a; H( F
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 1 s. ]( T6 }: F) j( u9 ^: c* K
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 5 e7 _- r1 E" s r! u$ V
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; ( f( D1 @: c! \2 l2 }* r+ K
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 5 O! ?% }/ ?6 o/ A
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );& q* H9 V) q5 o. S. `$ p
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
9 N: K9 m- C' w3 D6 O: J while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );& x/ {3 N& _4 ]6 V: N4 B
3 _8 [0 W# w ]3 e mcasp->regs->XSTAT = 0x0000ffff;
2 k' M, `- _& F8 h l" z mcasp->regs->RSTAT = 0x0000ffff; # t8 m9 o+ [0 d" j
7 R$ Z# K( u. w5 U+ |' {, ] mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;6 G9 P ^, b4 N/ Y8 y' `6 {
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
! E+ V$ H$ E) _, b6 v3 R$ w" @0 E mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
6 x' m* ^2 ?( N9 `9 v while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );, z' | n- P$ y9 g2 `' l5 ]
, Q% | D# U" L2 d9 Q7 t /* Write a 0, so that no underrun occurs after releasing the state machine */
+ h. ]) {4 X. ?/ T' o mcasp->regs->XBUF5 = 0;/ K- b) q" l3 Q: ^9 f7 o
mcasp->regs->RBUF0 = 0;8 ~6 K0 i% x8 a
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
) Z. Q1 i1 M# e while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );+ @; N8 F# R9 |8 _' |* I2 ~
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
: ~* ?* o$ Z4 y: R while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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* i- t6 F7 r: D u' c0 r5 `$ d8 ^ mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
* Y# x8 P& Y' r- ^5 v3 R" Q while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
' V& [' ^2 M- @/ c/ [ mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
( X# Z) f; c& N3 T) J9 f9 g while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );8 D5 U9 u* ? @8 w+ y
& V5 Z1 I4 B7 q CSR = 0x0000;
) \' G7 X; _: j INTC_INTMUX1 = 0x3d;2 ^: C$ f& q2 b5 n# M
ISTP = (unsigned int)vectors;, Y5 P; Y& A& B
ICR = 0xFFF0;
3 x1 n" F" ]& s! m/ m T8 h IER |= 0x12; 7 z& a) P9 v1 P Z, C* X
CSR |= 0x01;
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还有就是两个输入输出函数:/ u7 |5 C; e! |9 }3 d- O+ a; D
void output_sample(Int32 out_data)8 }) E+ ?: m6 t# O7 u5 u
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AIC31_data.uint = out_data;
3 K) e6 T% e* ~, Z MCASP1_XBUF5_32BIT = AIC31_data.uint;: o X5 q; N( x! q# M6 Q
} J! J. v$ D4 M8 @* e N
5 `; ?# E3 K, v/ @% ?6 OInt32 input_sample(void)
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, r; K2 y @, B4 ]" t( S8 O* Y6 L AIC31_data.uint = MCASP1_RBUF0_32BIT;3 w+ @1 p- y: A- S/ P1 ]
return (AIC31_data.uint);! a9 e- C4 S$ V( V6 |+ w
}
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