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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:8 [1 `2 o* X" B/ P4 ~9 m& j& ?
main文件:4 S4 W$ I X! c* K2 L8 ?* m6 y
interrupt void interrupt4(void) " x& u% }: ~9 H+ c4 O9 Z( H0 t
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Uint32 sample;# W' @& b$ |# [; d' L8 d6 F
% u' I/ W& w& c- _* M sample = input_sample(); // read L + R samples from ADC" @: c0 C3 R2 T4 f5 k
output_sample(sample); // write L + R samples to DAC
9 \- G4 e2 W* n. R x1 G, D* s6 n return;
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+ T3 j- j) Y2 n8 r1 q6 h' gint main( void )( V, i2 y: u% O* P0 Z
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/* Initialize BSL */
2 U* e* D4 @; q0 w, a5 B EVMC6747_init( );
, Y& `3 t. M/ c3 S1 V; L, ~ /* Call evmc6747_intr function */5 V; O( d! l/ t, |3 k7 T
aic3106_init( );
: G7 O( c: X1 G& x8 \ while(1);
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# o0 i. v& M1 g0 Vaic3106_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
U, J2 K' `2 p3 m" k+ Z' E8 l/* Initialize MCASP1 */
5 L* Z( m8 l& R1 Y2 K$ z: v. ^# q mcasp = &MCASP_MODULE_1;
; t5 y [/ c# v% F2 c9 O2 c0 k mcasp->regs->GBLCTL = 0; // Reset& p- i: _3 s: p4 E0 `" M1 ^
mcasp->regs->RGBLCTL = 0; // Reset RX% {* y. z! V6 q
mcasp->regs->XGBLCTL = 0; // Reset TX% W% i* {1 u" T, J+ S1 s
mcasp->regs->PWRDEMU = 1; // Free-running
: Q, ?/ m$ g( ?9 \1 p // configure McASP0 receive registers0 l5 H3 I# V9 q1 F# ~( [( w
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
: S# q9 r% p8 x0 X( i& d' P. q4 O( D mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
& c0 ?( ~. ]4 a$ ?# S mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
t5 b% A9 G! l* O+ q& x mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
: J! W5 v; g# D6 @ mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
$ e( K) h2 A5 e+ ^( d mcasp->regs->RTDM = 0x00000003; // Slots 0,1" Z( X" X4 U) N- {% L- @$ S
mcasp->regs->RINTCTL = 0x00000000; // Not used% p* M5 @3 T' N# Q% _3 Q
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256' D+ T% t- Y! K- u/ b& |
; E: ~' Z H3 [/ u% d: g mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used5 r E6 C; [& W3 X4 F
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus, p9 @) N6 q, d7 A7 j* Y
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
& I% p2 ]& [: r' Z mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-167 r$ D, \ C1 z# j5 j0 s" _& G. |2 J
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK3 j( \" N# Z& {5 M- o, X
mcasp->regs->XTDM = 0x00000003; // Slots 0,11 H- O; h' x; [: A$ B v
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
! e( r. }( x. A9 z% ? mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2563 n' B! [3 ~+ p
- N5 P! x1 u# u# D mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
v) A i6 f8 E+ q8 M& |- ]! `8 ?; r mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT' G! g0 r) z; X* Z3 Q
mcasp->regs->PFUNC = 0; // All MCASPs
) w" {$ N5 c1 o6 K( `. p/ T( b4 [2 X mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1; `; q2 r4 C1 R: Z3 W F3 s
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mcasp->regs->DITCTL = 0x00000000; // Not used0 r2 e# b# \' L) T( Z+ C
mcasp->regs->DLBCTL = 0x00000000; // Not used
# D. \; O/ B5 N' T$ J/ i! O( d mcasp->regs->AMUTE = 0x00000000; // Not used* `+ @' A# c! \+ f% [# }( X! f. @
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/* Starting sections of the McASP*/ O; P8 T9 s3 E/ v4 z* J0 G
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
1 P" ?8 n2 \( }' Z- }( t" R" C while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 6 A' ]* R ~6 m
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
: @& J/ r# |7 Y7 t$ H# p2 _ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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9 U9 E6 \, s6 g+ F! |' u mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
; U" T: `0 Q# G( }/ D1 R while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
& C" S9 d( f0 o1 I- X mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
4 b+ C7 Y4 M; u8 m& p while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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0 P( o9 N4 B- A- c; ^ mcasp->regs->XSTAT = 0x0000ffff; . Q8 U: ~- C+ L5 y! e" w- e
mcasp->regs->RSTAT = 0x0000ffff;
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) l4 q5 L% m5 i/ b, E mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;2 U" W: x4 {5 D4 J. z# d. X
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );3 u" G6 y2 u( s7 a
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
* Y) u. J9 L( g/ n0 q while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );' K4 S, d7 T. d1 L$ ^# b& C: X% L
9 y6 t" W8 y( N* H' |' q% A /* Write a 0, so that no underrun occurs after releasing the state machine */
! r, `* ?9 w& ]8 _ mcasp->regs->XBUF5 = 0;/ N7 {4 ^ ?! u3 F; m- X$ Q
mcasp->regs->RBUF0 = 0;7 R5 z- l+ P) m+ B0 \' k2 c
, E- J, m) P* v mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
5 ?: G, B/ M/ d0 U while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );2 T% k. T( K" {: c
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; $ y$ d( ?6 w* r. O" S0 A1 W# }! W
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );3 S) t! q7 b3 W4 ^. H, n
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 5 ?! {" ~ B/ y2 S8 m2 L, B& @
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
1 _! ], @! z3 w mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; $ G# Q) v. A% q. ~: a6 H/ c
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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# b( b4 i! T7 H CSR = 0x0000;, t5 C# t+ L: ]/ l6 H
INTC_INTMUX1 = 0x3d;
1 n; f# Q. U8 N% f8 f9 G9 L ISTP = (unsigned int)vectors;
) d6 F9 ~' A9 Z$ A$ w ICR = 0xFFF0;
- F4 {/ Y; D5 f: H& ]$ v) h: P u4 S0 R IER |= 0x12;
! O7 _/ u, q: s5 W* P% n CSR |= 0x01;
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还有就是两个输入输出函数:. B* ~$ u4 q! e9 }
void output_sample(Int32 out_data)
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, {5 u4 s N% z k2 ^ AIC31_data.uint = out_data;
: P& N8 y4 z8 _) x4 m; S MCASP1_XBUF5_32BIT = AIC31_data.uint;& e9 B7 x. M3 C- R: x& k7 `
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Int32 input_sample(void)
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- } b! l# ~% n9 }% g8 G AIC31_data.uint = MCASP1_RBUF0_32BIT;$ x# {+ i% u. V( A" Q9 }
return (AIC31_data.uint); H A2 y( u. ]
}
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