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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:0 `: w, S% }% a( s" g
main文件:
( Z- ?. E h3 g5 \: A- l7 tinterrupt void interrupt4(void) " c& |& \( G1 A/ w$ P8 p7 l
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Uint32 sample;4 k# Z: b1 D) S6 ?
/ m1 s$ T; O2 Y }4 }- E7 ~ sample = input_sample(); // read L + R samples from ADC6 F6 X! C' W" K/ V/ `. B
output_sample(sample); // write L + R samples to DAC
* x6 S' Z/ ?1 Q$ u; `. o return;% Y# P9 f- p: u% c" n* \
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int main( void )
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* t b; d1 N& I/ P& X4 R2 T# a /* Initialize BSL */! {; I% B5 v( w7 N
EVMC6747_init( );
$ ^( W, v- i9 I( U, M7 | /* Call evmc6747_intr function */
3 `9 M% r2 z- `, }) E aic3106_init( );
8 P: H( |+ u# C1 p: O, V while(1);: J2 m9 Z5 C0 P; r! Z
}
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! [. D; |' Z4 C4 `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
6 T4 s$ s8 {- X: b, V& S; F$ i* `/* Initialize MCASP1 */- [7 j9 m0 i& i; B2 W( Z
mcasp = &MCASP_MODULE_1;& O( I: c: [2 g
mcasp->regs->GBLCTL = 0; // Reset
4 Y% C7 e6 ]$ b# Q. ]5 ^6 t* G+ [ mcasp->regs->RGBLCTL = 0; // Reset RX
- _) v. F! a1 T mcasp->regs->XGBLCTL = 0; // Reset TX
" S# E% {& Z' ~9 K( K0 a mcasp->regs->PWRDEMU = 1; // Free-running& X# `( u6 \( d4 N/ s7 B6 O
// configure McASP0 receive registers
, G/ h# F, u" w; C4 d3 _ mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
: h4 X" x$ N: i2 A+ V v! i6 n$ u mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus F; ^6 M- I' D3 _$ p, i4 ~
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word/ R+ E: ]3 G' t5 y
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)9 j* }! h8 H5 Q1 O
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side): D5 n: \! e1 _
mcasp->regs->RTDM = 0x00000003; // Slots 0,16 N5 t' [( g7 s. w% b* g
mcasp->regs->RINTCTL = 0x00000000; // Not used
7 U: b8 h0 n9 O& E- H mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2564 E8 x( |3 j+ ?/ U/ K% N- }2 _2 K
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
|9 X2 G: n( e) d+ G2 V mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus5 l `" n- P0 e8 f5 J/ Q2 A
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word# j2 I/ e$ c2 N- S- R) O1 `
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
% i1 v; m" p0 P: w" ^* _1 H mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
+ B& v5 h" d8 m" X4 B) j2 f5 w, Z mcasp->regs->XTDM = 0x00000003; // Slots 0,1
) @2 y* m4 c( _2 i7 I mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
- F: G1 C+ ]5 L4 {( |$ s( x mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2562 q7 Y5 e6 |8 h0 k0 x3 r7 }) m
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
0 n/ K6 }# ~' @: z mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
! M: B% }: K) T3 V3 x mcasp->regs->PFUNC = 0; // All MCASPs
1 J) O6 k* z7 B. h ^1 M: Z* ^ mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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0 F! r2 f4 X! D mcasp->regs->DITCTL = 0x00000000; // Not used
9 A6 n7 \. N+ L0 i, B mcasp->regs->DLBCTL = 0x00000000; // Not used4 E) P# P) K( ] N
mcasp->regs->AMUTE = 0x00000000; // Not used
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9 R' V" y% q, u* ]9 C) [/* Starting sections of the McASP*/
) q* t7 z9 L7 ~! z+ R9 `& o( F mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
; D& M& {0 G8 n5 v2 |& h* _7 ?/ n while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); - i- P$ v0 j d# W6 ~- b" t
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
6 {( f4 B) ]4 r) V while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );# ^2 [/ G% W* W, ]* Y8 d
% H' u- }# t) y mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
5 G1 C/ }* S( |3 G/ W: R$ P while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );/ A) l% M9 |8 m: N
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 1 E' b; Z4 e: K1 i3 B ]
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );) f5 V y/ W' i( ?- S
5 Y5 ^$ D9 O' ^( T, V mcasp->regs->XSTAT = 0x0000ffff;
: r# |# q& m- G mcasp->regs->RSTAT = 0x0000ffff;
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* r' j( k, _1 U( y4 G mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
. s: V9 q: ?3 D& `1 V# y while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
( x6 f' \$ [. f: t* o mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 0 T& Q6 g* I) I& I9 [+ C
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );& Q9 q# H, C$ ?3 `+ D$ Y
+ c1 @1 c, u$ G0 u# h" ~3 R /* Write a 0, so that no underrun occurs after releasing the state machine */; p: D8 @& M' r, M; [
mcasp->regs->XBUF5 = 0;
+ n# S( J' M( @9 I mcasp->regs->RBUF0 = 0;+ B3 z# {1 _' G* F; |+ N: C; ]
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; $ }6 Q! x% t. m# U( ]* X* h- q6 a
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
" G9 q: v3 |% f mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
# ]+ K$ l& ]3 A while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 8 R- K8 f( M8 l! y6 T
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
, s9 ]8 D- L+ P; t mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; ) T! J5 ]4 u3 d1 { ~
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );- f0 S4 K+ W: l/ H
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CSR = 0x0000;
) x2 N7 e1 f U: N* G9 q INTC_INTMUX1 = 0x3d;+ H1 Z- U1 x" R3 E
ISTP = (unsigned int)vectors;; i( i( @ Q8 X2 G; n; K, @
ICR = 0xFFF0; . T/ `+ R( `' ^" d
IER |= 0x12; ' J7 o F6 d. c, G, }" u. d3 d; z
CSR |= 0x01; ; a/ J6 q0 d8 F; R% S! u! B: b0 M
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0 ~# x3 b/ H7 C还有就是两个输入输出函数:3 }# A$ F$ T4 I2 Z0 f2 L
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
7 ], d( U4 `5 G2 P T4 t2 g MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;6 X4 Q0 X' K; t
return (AIC31_data.uint);
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