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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:
; c( x: y4 n1 l* Fmain文件:
9 v) \7 s- c: i1 q# _9 |8 F5 y! jinterrupt void interrupt4(void) ' m2 k; E: a5 j) c6 T
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Uint32 sample;
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1 y3 F8 M) S( H0 d. S) W H" X sample = input_sample(); // read L + R samples from ADC
6 [3 s4 m" L) X8 p _1 c" X output_sample(sample); // write L + R samples to DAC
7 u: l/ C6 ]% O/ U3 F8 b: T3 M return;" ^% l# H1 _: E- H$ y
}
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0 a4 S( m! b0 h7 `& B6 p! Jint main( void )
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/* Initialize BSL */- \' ^- `- j* N. c% v0 l5 }2 K
EVMC6747_init( );! I* _6 P& X& ]' ]$ q" Y
/* Call evmc6747_intr function */+ j& f' s9 C8 X/ I' j
aic3106_init( );) Z5 t z" S+ J/ l7 u6 q
while(1);' |! j9 C, j1 l3 h. Y
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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
6 ]2 s/ F9 g; u0 a `3 r/* Initialize MCASP1 */- o! g( F7 R8 j! c0 i# L& [: N
mcasp = &MCASP_MODULE_1;' } H' e% l6 N/ W0 e& q6 P
mcasp->regs->GBLCTL = 0; // Reset8 k1 ^* r2 i* q1 e) H5 R
mcasp->regs->RGBLCTL = 0; // Reset RX7 K0 Z. X4 H- p% g z( ]
mcasp->regs->XGBLCTL = 0; // Reset TX
6 o9 i" O- l8 L' y mcasp->regs->PWRDEMU = 1; // Free-running( z+ G" j R6 _) o" q$ C
// configure McASP0 receive registers
: I1 K4 ~1 ]6 B: ^9 I8 p- P mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used/ m& G- h7 H- o& m
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus( @: b+ y# _" {
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word7 _1 t4 Q# D7 D2 q2 u- f
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)* [/ t; U1 b" {/ B; l/ b$ J* \
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)2 X1 \. ]) M3 r1 z$ }5 E3 w7 f) k, Y
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
h* G+ V5 |) ~, M$ U# q mcasp->regs->RINTCTL = 0x00000000; // Not used7 v( \& e$ g7 P$ P
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
- V9 c: \5 T2 P7 ?% \ mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus! V8 k5 g |' M5 e) t7 G8 B& t
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word- n/ I; _1 J) s: a9 C8 Z
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16! g5 M9 g4 [9 N0 R0 ]* N! j
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
/ E9 u7 X1 g, f9 H2 ^6 Z mcasp->regs->XTDM = 0x00000003; // Slots 0,1
& z% s: e5 [& `+ { mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit( v. C: X% \& Y! M E
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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& K; Z) Z' ~0 ~4 x; \ mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
+ q# c% [- s' E8 x$ @6 \9 v mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT2 w, [0 [2 _5 G: B
mcasp->regs->PFUNC = 0; // All MCASPs
/ [, ^) S+ B; ?7 s. }0 C mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1" d( [! _; a9 L4 Z
" Q3 _* r! V0 N( `3 r mcasp->regs->DITCTL = 0x00000000; // Not used- d4 |" ~2 }4 O
mcasp->regs->DLBCTL = 0x00000000; // Not used9 Y7 q3 A; y* A" \# d
mcasp->regs->AMUTE = 0x00000000; // Not used d4 r& Y# E+ C- ]
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/* Starting sections of the McASP*/
7 ?/ G, a7 E2 P. K/ N mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; ' U5 m4 C" ], e; X( [; e5 x
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
2 L: I% w* }! J* A- {0 q mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 6 D) n& L# C6 o }" s( ~
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );$ y e; }; `+ A( F) g0 O6 g3 A4 ^9 c
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
, J1 W4 M: D3 c( g) t6 E q while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );& ?, n. ]# ~# _- Y# U
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 2 F( E" N( l+ |* V- K
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );% g: F! z( T, S7 r. T
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mcasp->regs->XSTAT = 0x0000ffff;
, v6 I: }+ U# k: O* D1 x; C mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
& G; C6 r% E7 ]" F while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );% b- I8 l6 [, O# O( l0 u1 S+ c
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
& g: F' W) `5 k M9 O5 A while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );8 X7 Y( @6 k$ d0 K9 x+ y
; y1 E. f! k6 e W- [ /* Write a 0, so that no underrun occurs after releasing the state machine */
/ R" \. s$ u, J mcasp->regs->XBUF5 = 0;$ t' V+ w5 D. c8 d9 i
mcasp->regs->RBUF0 = 0;4 e1 A5 f' ^3 P! U
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
: R$ m9 k/ V3 X" r2 i# O while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
8 Z7 c8 L3 M1 h0 q! i mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; # H& J9 ^) ~- O! Y# ?
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );& w5 m; A" J- }9 h
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; . t& R! {# X Y7 z5 d9 v+ t
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
% n# `- ~* p4 P3 ~" X, y, w( w* w mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
( T+ S* S6 d9 i* v' G# W: G while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );- ^0 M- c5 i* c# `0 D$ x, P1 ?
, o" D+ [/ A) Y! w0 K$ u2 v) ~ CSR = 0x0000;- ]1 g! W. m6 i3 q0 F
INTC_INTMUX1 = 0x3d;' ~% u; L+ F. e( n) f2 L$ ~# C/ _
ISTP = (unsigned int)vectors;# V( n. D- } U* V$ l
ICR = 0xFFF0;
, D% F3 b8 I; [3 X! X IER |= 0x12; $ A: ]: V+ n9 E1 ^' z. J) o! A
CSR |= 0x01; - x- M3 O7 k8 e2 {. A# B
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还有就是两个输入输出函数:1 a5 R% P' w% }/ s) Z& D
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
* f; o9 J1 D$ y% r0 U MCASP1_XBUF5_32BIT = AIC31_data.uint;6 G2 `* {* x/ _1 C# j9 v! M
}
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6 X! U7 N$ J6 h0 BInt32 input_sample(void)
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& S* s0 ]/ f9 C/ c3 `4 ] AIC31_data.uint = MCASP1_RBUF0_32BIT;: |* k0 \, U( _8 Y
return (AIC31_data.uint);
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