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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:6 \# K e& D" i! n: j" X4 y! m" R, K
main文件:
3 r" M0 j. M1 k5 s/ u9 [interrupt void interrupt4(void) + X! v2 n" n8 j; s3 I* C6 ?8 u
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Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC! @, q/ }. Z, t0 t6 Q$ \# b8 |
output_sample(sample); // write L + R samples to DAC
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int main( void )
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/* Initialize BSL */" P0 U0 p* k& L7 a* n
EVMC6747_init( );$ c$ O& q0 A0 K) U0 L* |
/* Call evmc6747_intr function */
o3 K* @1 P% T4 G4 o aic3106_init( );+ z2 T/ A; U% b* ?2 o" A+ z# o/ U
while(1);: X. Y0 E. ^4 P) }8 `4 V- g# Q+ e. R
}; Y4 ?3 {4 r/ p
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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
5 O- Z" S+ \$ Q, m, I4 i/* Initialize MCASP1 */
, @* p) Z% C1 E% B' f mcasp = &MCASP_MODULE_1;
5 G: X; {: B0 _7 z7 S$ k1 _, N mcasp->regs->GBLCTL = 0; // Reset
* l* M0 Z9 ?. l1 g0 ?; e+ X mcasp->regs->RGBLCTL = 0; // Reset RX
0 i) w* f% P h) S2 c- a! [2 v2 f mcasp->regs->XGBLCTL = 0; // Reset TX
2 i) } J9 f3 l) ~) B P4 T$ d mcasp->regs->PWRDEMU = 1; // Free-running1 o8 L1 n7 y$ v- C( d$ M: o
// configure McASP0 receive registers- S& m: b. Z* {& P
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
( O+ E. f+ k" t7 P& G0 r mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
- [# Y' X* Z" h N/ K0 ` mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
# p3 `: W' X, Z. A% |# _ B6 e# S8 v/ T mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
" m( Z9 @2 w3 ? A9 C mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
2 h4 ]# j1 J5 I8 I4 x/ T mcasp->regs->RTDM = 0x00000003; // Slots 0,14 ^0 W0 X/ e% `2 V& ~$ x
mcasp->regs->RINTCTL = 0x00000000; // Not used
3 c; L8 u7 i/ F* b+ U# k! o mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256 K; h; V" b3 ]! U
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
% i$ s) L/ E- I8 w( r mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
: G8 N9 J% B& H$ H6 w; t6 h8 A mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word5 b2 ?; T8 h. n, }- j2 s* D
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
# ~! X& q/ {: q/ v$ |2 L6 f, n mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK8 v% |5 T! N) c$ V9 B M x- q
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
# n$ B9 Z' ^7 A F mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit: l- I9 v7 g9 g' q
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256/ K. h4 O9 L& Q* h% p7 |5 m
7 O+ ` C5 [- f; G! d mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN% q4 ]( O' M; @' ^0 b6 G% a8 [
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT$ C9 s% ^4 c6 \! }, k
mcasp->regs->PFUNC = 0; // All MCASPs
- h" M/ W) G3 q mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used
; U' W) Q- _, O0 R% o mcasp->regs->DLBCTL = 0x00000000; // Not used/ [8 `7 y6 R# ?, j
mcasp->regs->AMUTE = 0x00000000; // Not used
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* ]0 L X7 B* m: I/* Starting sections of the McASP*/, |9 r$ i c$ _
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
P4 d" x/ S2 a while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); & V* H, q S( O! y$ L
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
; a, b8 u' T5 a- R while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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. h. l+ S: _6 I% R9 A0 C6 R1 x mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; & m, a ?+ v, K/ B1 h; Q
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
% Z1 a- Z' ?7 V mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 9 ^5 O% ?; {! U& L k
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );8 k! p4 ^% g7 V x9 U: N; {# u
& c; l. I" T1 B7 b mcasp->regs->XSTAT = 0x0000ffff;
5 c& k4 a, p3 a; Z9 r mcasp->regs->RSTAT = 0x0000ffff; 3 T( o1 f. u7 |
) l2 n: V3 N5 x& S: i- B2 |& p mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
( n( D3 o2 p7 X' H8 E while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
- ^2 K' r' B1 ]+ _0 L z mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; , X. |; ?% \% l3 {
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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$ N9 P' A L. I /* Write a 0, so that no underrun occurs after releasing the state machine */
0 t8 h) \4 x1 Z3 S1 L mcasp->regs->XBUF5 = 0;
`; z3 s/ G y mcasp->regs->RBUF0 = 0;
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% B$ k. k {, k8 i" c mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
& s% P3 o5 a0 a7 k0 a9 G X while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );9 z4 o) e+ D7 h
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
( p X9 l' l- t7 u) ~8 A* V while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );1 |$ g1 m4 U% ~4 e2 m/ J, d, c
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 7 m- m8 F/ ^, _2 d8 ]# F, n7 }: I
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
* R3 z; S5 t1 F3 E; W3 F mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
) V* s7 n8 U9 e. s while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );& b3 V% W; f$ G9 Z# q3 z. E
% }9 {/ q9 h3 k0 o+ m CSR = 0x0000;, t' ?/ C9 a# R7 b, ?. S
INTC_INTMUX1 = 0x3d;+ h: _) _" e0 o/ d/ ]+ v6 W, y+ W' j
ISTP = (unsigned int)vectors;
( d9 L+ G# R3 C( x9 z ICR = 0xFFF0;
) l! r1 @' k+ I+ x! V: e$ D IER |= 0x12; , P8 p2 f* W$ M, K0 y; k6 A
CSR |= 0x01; * S }$ j% G! N0 G7 |
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还有就是两个输入输出函数:
% }. W# p8 w8 Vvoid output_sample(Int32 out_data)) y' h$ R1 B6 g/ N" P
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AIC31_data.uint = out_data; ( X1 m$ i* u- }) @+ x; G# _& E
MCASP1_XBUF5_32BIT = AIC31_data.uint;5 d, I8 \6 O, q1 o
}
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;) J' c+ C4 G2 x/ n! f
return (AIC31_data.uint);$ N5 Z! ?! t2 G! g" f( ]# j0 Y* S
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