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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:
4 W, J$ b- f9 z4 xmain文件:
3 }$ ~! {) |- |# k% [interrupt void interrupt4(void)
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/ V i: ^. S$ X2 s' Y, h. k- ~3 @0 ? Uint32 sample;1 |4 \0 R( [: i" S# ]
: ~7 D" {. ^4 F$ F0 c! }
sample = input_sample(); // read L + R samples from ADC
# i7 J) E) G6 E/ w* _ output_sample(sample); // write L + R samples to DAC
+ D4 i3 T" @! { V' b! ` return;
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: g6 c3 O2 S Z' M( g) T' Z2 Rint main( void )
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" ~8 l# R! ^1 w# s2 l& ? /* Initialize BSL */
, j' u# ^- o7 { U+ m: h EVMC6747_init( );/ j0 t6 ]% S+ v9 v) E
/* Call evmc6747_intr function */0 j3 D/ _4 G; o/ {, W; P1 e: n
aic3106_init( );3 ^! g m6 S3 G, ?
while(1);+ F$ d) H7 V0 m# s" e" G. g0 Z( s! _( J
}
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) ^1 W1 X( s, T3 ~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
- t0 h" u( F( A }/* Initialize MCASP1 */
8 o. p/ v, _! f/ w: f1 F' @4 `- T( ?7 r mcasp = &MCASP_MODULE_1;% k$ j) S z1 k# [8 U4 B
mcasp->regs->GBLCTL = 0; // Reset+ J% o v9 T* Q% M0 D$ K
mcasp->regs->RGBLCTL = 0; // Reset RX% T* Q4 `1 Y$ Z& ^$ o
mcasp->regs->XGBLCTL = 0; // Reset TX4 |' P; M0 [3 O9 S1 l. N N; Q
mcasp->regs->PWRDEMU = 1; // Free-running1 T: @: \* m5 _) p* J' `
// configure McASP0 receive registers3 \" V, L) F" a- K+ ], b, }
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used0 _. m" b j) [+ q9 o
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus }. r% @" a& B" J; m; t
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word% h9 Y" j# G0 R/ I H& T3 M
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)8 w, a' H' z" C2 L! B# \
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)! a3 N, M! g- l- v7 e1 [" W
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
, o$ S7 Q- g# p7 K+ i; ` mcasp->regs->RINTCTL = 0x00000000; // Not used$ X7 g, d+ D7 w/ X
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
6 j+ r0 T1 d$ \% ~. a mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
+ o. C* i; f; S. P2 p mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
% [" J8 \! _- m5 p: o mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-163 c; {% V# u7 f! Y* T
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK- C t' ]& Y, Q- X3 Z8 o! Q- d" C
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
! p+ B. L2 a% _( ] d mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
9 Z9 Z- x+ x! b- s' r" {6 ` mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256* K/ Y8 D9 |0 d4 T& W% J- G, S
. ~8 v7 s4 p# ~ mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
# L! ?: f& @4 J: D7 C mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT6 \" O/ q# e2 M; S
mcasp->regs->PFUNC = 0; // All MCASPs
% n! }+ @) C4 H' p, }5 }/ v mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used
6 X( W. i. z) a4 b mcasp->regs->DLBCTL = 0x00000000; // Not used$ }$ @, L* Q, n9 k
mcasp->regs->AMUTE = 0x00000000; // Not used/ w- [3 b+ d5 e0 I/ e4 f
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/* Starting sections of the McASP*/
+ w/ A8 B" @- V5 L4 k N3 j mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
7 \ l; J# w. S7 @ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
5 ^) e# h0 T" A5 P mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; & w! h3 a1 t; @- Y; C9 ^
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
9 [7 F. a2 [% ?. J; y$ _ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON ); v5 Z: X0 I8 Y! b
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 1 }7 @, e2 `! v) o0 p* u$ t% J
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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& @, W9 \& O: m5 [ mcasp->regs->XSTAT = 0x0000ffff;
% z: c- H* p" d2 K" X$ Y9 a0 c mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
! U( K$ Z7 e- D3 W* }! ~ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );0 }+ g% e/ x6 ?) P; g4 t
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
. J; `+ s* u! f, _5 _ 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 */( G& C3 w+ d N7 m5 y6 ^
mcasp->regs->XBUF5 = 0;
. Z4 T6 w+ p2 L; a4 m: {5 W- N- w mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
- J5 u. q. p! `; C8 P* z while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );: x$ Y* N) Q8 {
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; b4 L" m$ W C7 E1 n d
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
' f' _: M4 h% {. U* Y- J while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );. y$ t' P1 C' y0 P
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
( u# N" L' p. N while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );9 e( e- i4 \' p! }6 |. Q) y
1 ?4 } [4 X8 d; e1 W b" R
CSR = 0x0000;# x' w* _/ ^/ `' a: ?
INTC_INTMUX1 = 0x3d;0 ?6 }. |( K: j
ISTP = (unsigned int)vectors;
" F. j0 ~+ p" B- d ICR = 0xFFF0; 3 E8 ]* @( j, e0 R# o: b
IER |= 0x12; ' U' Y+ A; I5 p* H0 ^6 Q
CSR |= 0x01;
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& O# F3 U2 a4 y8 ?( |' x还有就是两个输入输出函数:
( Z# Z8 C; F1 a3 L5 Lvoid output_sample(Int32 out_data)) `5 Y& V3 [6 n* A4 R5 u; C
{
8 ?; n3 X, O( m AIC31_data.uint = out_data; / s* [ w& O/ `; N8 z$ h8 _
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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- k, `+ t9 t6 A s0 HInt32 input_sample(void)
9 r) s, ?) v2 B% O: D% U4 z{
. j5 `# c( a) `; a AIC31_data.uint = MCASP1_RBUF0_32BIT; U3 P1 h/ V' L; z) x; y1 i
return (AIC31_data.uint);2 z; d R: q4 y: v1 U
}
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