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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:
4 c7 r. O$ y+ A/ p8 F3 Q _main文件:; \7 i' z$ k2 y$ W( w
interrupt void interrupt4(void)
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) |; m: w* @" W Uint32 sample;
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, M% Z" o3 H+ g4 ~- G0 t6 @ sample = input_sample(); // read L + R samples from ADC& ?0 E% u$ R x! Z
output_sample(sample); // write L + R samples to DAC " |: `& P( |- j3 k. m
return;# Z: E' l# K5 N+ U# m8 G" ^
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int main( void )$ Q7 z8 X6 {4 e( j( I4 _+ Z
{
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/ g; Z9 [& H- f1 n /* Initialize BSL */ C, @2 |+ M0 ^; x
EVMC6747_init( );, m# u. e5 \3 A: w" T9 h _6 A
/* Call evmc6747_intr function */: _/ U* Y8 B- f7 `( T- H# M' z
aic3106_init( );7 z. o g- I. h) L( F/ {* I
while(1);
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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$ H# k# j$ n3 h r
/* Initialize MCASP1 */7 \" ] i9 {: D' _ z
mcasp = &MCASP_MODULE_1;5 }- M# A% T0 `" V i
mcasp->regs->GBLCTL = 0; // Reset
5 X! s$ s% t& Q/ a mcasp->regs->RGBLCTL = 0; // Reset RX
) V1 O8 k6 J2 p# i! r' P' a. J mcasp->regs->XGBLCTL = 0; // Reset TX
: m- N5 ? X2 C3 [* y7 f2 v mcasp->regs->PWRDEMU = 1; // Free-running4 u: ?- F% J: p, t- [* l' S
// configure McASP0 receive registers
9 `0 g# R' R) v7 q$ E( ]! h mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
8 Y( h5 ?: H5 _9 w( P& { mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus8 L) M3 v8 a2 L ^1 T" A
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word1 N8 j( p4 U* u' T2 t( N. |) ]
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
! o4 _ p' @$ [ mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)' C5 w; k% r3 I% Y! l3 o# w
mcasp->regs->RTDM = 0x00000003; // Slots 0,1" R9 V- m1 | r
mcasp->regs->RINTCTL = 0x00000000; // Not used+ N0 O. x2 B# o4 a2 m# l1 |
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
: E. F, `' l1 X mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus* L0 d! R$ J9 ^' q+ c$ v
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word) P/ X( ` u- Y- E# t2 Y( S, b8 B+ D
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-168 O% D* v% X H: G
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
& O( C* m* b% v6 J1 l X( s& r mcasp->regs->XTDM = 0x00000003; // Slots 0,1( T, c6 \) O+ s0 ?' B# I7 j9 X
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
. F( V, ~4 X+ A. p( M7 |5 p8 f mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN" K- {& i: c! v! n, j! C9 U; [
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
2 e. f. n! |& [: Y2 y mcasp->regs->PFUNC = 0; // All MCASPs! ? J/ \7 ?& {! @$ {
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1( J6 x, l: y& R
. J. _ N5 z6 a5 P mcasp->regs->DITCTL = 0x00000000; // Not used& f$ x# v& @) Q6 z% p* Y
mcasp->regs->DLBCTL = 0x00000000; // Not used2 }% ? P- A W0 H
mcasp->regs->AMUTE = 0x00000000; // Not used
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/* Starting sections of the McASP*/) x) m3 y9 ^* _
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
0 o1 F8 i, k( {! o! \4 p while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); ' h; U9 u! j7 O+ B" j8 _
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; $ {3 h2 N8 O; O% z0 u! R2 @
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );% @& I1 W4 V$ I2 _6 ~
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; % o& i$ i0 H$ A3 h; ~6 u
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
& k% N3 u4 h. G6 `: D; o mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
) P* x# o6 D( c: h$ u1 O while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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$ ^, U I+ L5 @ mcasp->regs->XSTAT = 0x0000ffff; & D1 a" O% z3 ?6 A' _) Z2 s3 p
mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
/ k, B* p6 N, T2 r while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON ); x/ b( t- N, Z) j& ^
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
* j4 ~4 S2 E0 H5 c; a8 q o while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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/* Write a 0, so that no underrun occurs after releasing the state machine */
6 U' B- y) U8 a, q, i- T" q( f mcasp->regs->XBUF5 = 0;
. O6 E/ L6 }7 [% f& S mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
$ E% H9 |4 x+ P# A& S while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );0 c) E) j$ P- f, B
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
9 ~3 D& d4 Y, S% o3 `4 t6 C& J) U while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );+ K9 M% f% B, K' r. |; \2 F4 k
! H. J3 M1 K. _1 B. i) q mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
5 j7 I9 n, y1 K while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );4 b" o# u$ m7 Y1 O7 j
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
! F* a% E6 k8 X# R% J while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );& S0 K/ k0 p/ S) {
$ S O8 u. J/ W) c; h8 O9 b# M CSR = 0x0000;+ Y( P0 J9 i# s
INTC_INTMUX1 = 0x3d;
9 O/ o) }* y' E: @ ISTP = (unsigned int)vectors;
8 P' B5 @9 `1 i# u. B9 E4 r ICR = 0xFFF0;
# |% ?2 a% P- p IER |= 0x12; : s* K) E& ]/ I( x
CSR |= 0x01;
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还有就是两个输入输出函数:7 E- q* n' b. m2 y7 b Z
void output_sample(Int32 out_data)* l* q* f4 \* \0 r {: c# I1 @
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AIC31_data.uint = out_data;
0 r* o6 M3 }& L2 H$ J7 Z: K MCASP1_XBUF5_32BIT = AIC31_data.uint;* P) R; s: b1 J2 t9 K7 a5 _+ B
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Int32 input_sample(void)
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2 U( E; `& ?% C: `( ]8 d AIC31_data.uint = MCASP1_RBUF0_32BIT;* K$ j* S- Y% Q" {
return (AIC31_data.uint);
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