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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:
3 U+ R0 A1 P# u% X7 i1 p( ymain文件:
& @6 S4 X) c/ g4 o, \/ dinterrupt void interrupt4(void)
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9 C) c1 w! j7 A: j ~5 u Uint32 sample;
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3 x! g! r/ S A. I- _3 I sample = input_sample(); // read L + R samples from ADC" c9 _9 G0 s" r z* H
output_sample(sample); // write L + R samples to DAC / t4 r( g$ t4 x1 h2 A+ M, z
return;
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8 y4 a5 i4 A' |- ?- f; a3 v4 pint main( void )( o: ]' b* D9 C! e) }) L9 a% n
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/* Initialize BSL */; H' f. \: Z. {$ c; b7 j$ B2 c
EVMC6747_init( );" w: c2 M3 q6 M& Y- H# ~# ^
/* Call evmc6747_intr function */
" ~4 T2 H% E; P' u& _+ r, N5 d ?8 Y aic3106_init( );
% u! N5 b$ g- B' f0 a- m while(1);
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9 c1 E; J2 c& w8 Daic3106_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7 Q( u8 ^: d6 i; R$ H! b3 [
/* Initialize MCASP1 */
2 n# p* f- W& W* _ mcasp = &MCASP_MODULE_1;
9 s( D ?& C* l/ v9 M mcasp->regs->GBLCTL = 0; // Reset6 X' o8 r/ `) I& O9 K6 f( v
mcasp->regs->RGBLCTL = 0; // Reset RX
X7 u) V$ g* _8 m8 L5 D j: P mcasp->regs->XGBLCTL = 0; // Reset TX
; p, ~. \5 B U" C: v mcasp->regs->PWRDEMU = 1; // Free-running4 ^$ B% H( d, @0 ^& Y1 T' S
// configure McASP0 receive registers
4 g; j5 Q4 b- z; g. c* q% O mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used; W9 ?* h0 t" |8 ~/ s2 f
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
! t9 z8 u* e) c) O2 v mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word: g# M8 o: ]/ H" G M) K$ ]! Q. ^! l
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
# V3 `& u3 d, l4 j3 M Y2 c" X8 k7 O7 R mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)* F5 k/ T. H! f# _- }
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
6 M, c H# H( g8 X# g9 ^2 w7 ~- I2 \ mcasp->regs->RINTCTL = 0x00000000; // Not used
6 Y i0 M, r9 ?1 {7 D mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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( i" L3 v0 Y1 ]9 a2 Z9 P+ G mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used% ^6 ^( H' a& x" T! y# O* Y8 j" C
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus. y5 q8 k: a! L# Q* ^3 f: v; d
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
% E" `- Q3 S7 I+ u" W mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16& _8 ?# P2 p3 s* ~- S
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
7 \$ T3 C# a$ ` mcasp->regs->XTDM = 0x00000003; // Slots 0,1& r6 o5 H' j0 A; o: B. h7 `* u
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
& d, \- `" i" T! Z, g; p& o mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256; O" a2 G; a5 J4 k
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN- L3 ]+ r( r, y" V3 S* V# Q* G% N
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
/ X- Q! \1 r# v' u: ?- a( e) E! c- Z mcasp->regs->PFUNC = 0; // All MCASPs; U" U U5 U4 V& h3 I! J
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX17 U$ Q" P0 t4 f: `. h
- U& G1 j& G d7 O; T' F! } mcasp->regs->DITCTL = 0x00000000; // Not used
( K! z- H5 e6 e% A9 s0 N6 J mcasp->regs->DLBCTL = 0x00000000; // Not used
1 r# t }# C! `/ ~ mcasp->regs->AMUTE = 0x00000000; // Not used
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% {9 u2 M) K5 f7 d1 T1 u/ {/* Starting sections of the McASP*/
' t# ~: n3 H3 d* P+ H Q/ O mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
2 a4 i! x) l( _+ I" Z while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
) ?* k! j( ]6 S. P) p; ~. p mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 4 [' b- e+ C& @' w4 y9 H6 t
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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& }/ z+ \ c4 S, T mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; , Q9 ?4 } p: i; Z6 U% R& ]% Z y' g, U
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
) u' Q% |6 M- z) d mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
( R' Q7 T1 `3 i( k while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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. R2 z) R7 o8 g& S) h4 l mcasp->regs->XSTAT = 0x0000ffff;
9 n* I0 U/ `1 |: V( I, _% Y mcasp->regs->RSTAT = 0x0000ffff;
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! H) ~2 T* f: I mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;( \" F2 D5 ]+ h
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );) w R- W5 q. d& E7 u8 S" b
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
5 k7 y* C3 E) Z+ x while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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7 o/ J/ C, o3 r! ~) j) j. [0 x& v /* Write a 0, so that no underrun occurs after releasing the state machine */9 }0 F' y0 w: ^ U* K
mcasp->regs->XBUF5 = 0;
- V. z8 G( [/ |, _$ L" P mcasp->regs->RBUF0 = 0; g: W1 P+ h. M8 U: E
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
# n5 t- e3 T) E' C9 ?! H while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
$ v4 h1 |7 I& }6 T mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; 3 P2 h* i$ f/ F, r9 v* u. R0 g
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );: L' z: |& `+ l0 X( d& h* y
4 p2 T( X+ y/ S, t+ h2 S mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
" b. V9 P n- F: a" `6 N while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );8 F$ [0 |2 n/ m5 {
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
0 T# j7 Q* Q. p0 O b while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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; f9 j; D2 d q& i) T CSR = 0x0000;- b, n( t2 |1 N" L" Y
INTC_INTMUX1 = 0x3d;
0 n' M" t/ P5 S5 }( Y$ a" n7 b ISTP = (unsigned int)vectors;4 u8 L! k$ w4 \
ICR = 0xFFF0;
/ y+ `. w( L X4 ? IER |= 0x12;
- v( v, Y: r! |* x7 F7 @ CSR |= 0x01; ( ~1 q3 K7 ?: w$ ^4 R8 l
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还有就是两个输入输出函数:4 c' c B0 u7 Z& J2 G; G
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data; 0 n( {1 |& z8 c% r
MCASP1_XBUF5_32BIT = AIC31_data.uint;" Y3 s( x5 ~" Q: } r
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. d1 [, Y$ T4 t) [" ~Int32 input_sample(void)
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. Y, h& d8 H7 s& W. E$ b& c; O% A3 c AIC31_data.uint = MCASP1_RBUF0_32BIT;
( @8 S \+ h2 a" s1 c+ z5 p return (AIC31_data.uint);
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