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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 N5 ~" E4 G( A5 P |" Dmain文件:8 y$ v$ l3 b. l. g Q
interrupt void interrupt4(void)
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Uint32 sample;4 B ~6 A8 A! q+ j9 }& T- Z' S
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sample = input_sample(); // read L + R samples from ADC' B, H# R5 S; y3 Y4 o6 ]6 d$ i, u
output_sample(sample); // write L + R samples to DAC / U8 Q7 A6 l s6 r+ h* N
return;
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; }) }6 m& V2 |2 L% kint main( void )7 s: a) u2 ]& Y4 h* P, `4 d
{
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/* Initialize BSL */
. ]" W- ^- Q7 P- A EVMC6747_init( );
1 g: h# O. Z' X" p, H! ] /* Call evmc6747_intr function */
. H5 D# c1 Y& f/ J" r aic3106_init( );; |% r8 R G" |& W6 F
while(1);
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6 [2 A% J7 b- ^$ z. F3 Gaic3106_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 y6 V+ W1 S) a: ]# \ }' ]% z/* Initialize MCASP1 */
3 x. T9 j, b- n, K mcasp = &MCASP_MODULE_1;
6 c' [! f! `; L' r# V- e: i" x mcasp->regs->GBLCTL = 0; // Reset( L2 \2 |( c5 C' \. U
mcasp->regs->RGBLCTL = 0; // Reset RX, {( p1 Z) Z! {( N& F: U8 F
mcasp->regs->XGBLCTL = 0; // Reset TX
: M+ V+ w2 ~ j! J8 K+ e mcasp->regs->PWRDEMU = 1; // Free-running7 G5 ~6 Z2 o' m. X0 D; Y
// configure McASP0 receive registers; R& x5 q) P, z! |: F' Q) _
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
/ d0 D1 P+ H: d# A) G% ]: C5 E* t8 X) F mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
4 j) D( z* I# @( E' x, ~ mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
* H* b1 N( S2 c) B/ J# | mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)% Y% |+ ~0 [9 D8 K- E
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
& a1 T# X3 v/ b# k4 i$ K4 y mcasp->regs->RTDM = 0x00000003; // Slots 0,1
% `; \. e) q0 ]% f mcasp->regs->RINTCTL = 0x00000000; // Not used
8 }# k m# ^1 l. C mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256) \2 H- i# ^# J" d/ T
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used: F* v# J' ^1 |5 u; X2 s
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
T! ~! [% k( O4 V5 U2 F mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
7 ~$ `9 r9 @! K" ~4 m0 n, \ mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
* k3 ~ s* k2 \1 Q" E mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
r8 ]* O$ ~7 N$ ] mcasp->regs->XTDM = 0x00000003; // Slots 0,1
; @( Z) |: ?/ [& I mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit x* B+ r" z3 P. s9 K4 \: C3 c5 w6 f
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN) t' T+ r7 S4 n
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
+ U N. S& X0 ` _9 O mcasp->regs->PFUNC = 0; // All MCASPs
2 ?8 E# |1 I$ |7 ^4 @ mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used, M m* f" G* f, W, y n& s* ]
mcasp->regs->DLBCTL = 0x00000000; // Not used
& q9 w _0 ^! A7 N8 F' ` mcasp->regs->AMUTE = 0x00000000; // Not used: f- j# |5 ?) A! u/ r ]4 t
?! |5 e) [9 V/* Starting sections of the McASP*/- }2 ?$ G% O% `4 |4 L# J2 |. a
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
% O; S- r/ z% ?8 i& v7 d0 K while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
/ @0 m* Y7 I* `5 f; Q8 W6 x) c: t mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 8 I9 S; e1 Z3 E" c2 n
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );( c' G' r3 |; t' ^9 y
* W. f, q7 q, g) X. k* {' W mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
1 Z7 s* l. b& K while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );; l4 U/ m* Y; k t
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
5 A( E9 E( p! T* z5 { while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff;
* m2 H7 k7 J0 V mcasp->regs->RSTAT = 0x0000ffff; - l% j! F+ b5 c/ N8 W0 }
8 W/ M: K3 J! N" \% @8 [ mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;: ~6 Z* ~# L r% q
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
7 y% w5 L+ [4 f* i mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 5 o2 a# F% q4 G' E" W& P: K" u1 K7 G
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );1 p( u L7 Z- ?. q$ m( T: R5 |
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/* Write a 0, so that no underrun occurs after releasing the state machine */
, t8 ]3 ?7 {* D; i6 n+ }# G( x mcasp->regs->XBUF5 = 0;* c% p, m2 e4 u7 t% D$ P
mcasp->regs->RBUF0 = 0;+ U$ B0 c; C; Z2 R _- K
) c3 [+ Y2 _' o+ a. J mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
3 M' U, u& T+ |3 _ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
7 _3 y3 Q; Z* k3 v( u mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
1 P8 ]* B) Z! X: e4 R while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );' j! T1 I6 p* w* k8 L. C
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 1 e% z5 y% w4 o) N! @( _
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );! i" ~, O& b3 P
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
3 n# w% n; P0 a while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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8 t; t7 t; U4 W CSR = 0x0000;
+ u# j4 v ^* k4 Q/ X5 t1 Z& i+ ~ INTC_INTMUX1 = 0x3d;' e3 n& L) |. k" z, c- J7 F" w
ISTP = (unsigned int)vectors;
* }! v5 l3 O" ~ ICR = 0xFFF0; + y/ Z# R* [+ g S6 N8 _# l" ~
IER |= 0x12;
2 }0 o# L3 m$ c* `7 ~6 M CSR |= 0x01; 5 |6 Z2 a) F* f1 L4 n
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还有就是两个输入输出函数:
1 ^1 |5 d' b# N0 \; N6 o6 f- ~void output_sample(Int32 out_data)
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AIC31_data.uint = out_data; 7 T. n! w9 _2 X6 I1 H3 w
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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+ J* H$ ]% o# i7 OInt32 input_sample(void): v3 v: e& s# ~$ R* d
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AIC31_data.uint = MCASP1_RBUF0_32BIT;7 s& F4 m& g( O- i* e" l
return (AIC31_data.uint);: e8 ?) u5 ~. q: A
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