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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:. j' b! T f1 Y5 g+ l+ o- d& I
main文件:# e% Z$ u- M/ s$ R/ S" G
interrupt void interrupt4(void) " b0 m a. h0 B( b0 E' J$ y
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Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC
3 L4 z$ m+ L: d1 G0 ] output_sample(sample); // write L + R samples to DAC : }. {+ G* ^8 _/ n1 K' R
return;# e# y$ Y+ a+ k% P# I
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int main( void ). h& @! O& X# e5 v2 z
{
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0 W( B4 p0 M; m; M# c# S /* Initialize BSL */
7 T6 n+ c" K# W EVMC6747_init( );2 F* v5 ]3 j: ?) W) l
/* Call evmc6747_intr function */: _$ Y# [3 b% N+ S1 M; `' |6 L
aic3106_init( );
. A; a/ D6 R4 {7 Q7 _" d6 x( v while(1);9 ]2 W1 a3 c- j) _ x
}
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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) z) B9 z% S1 B1 B$ L
/* Initialize MCASP1 */8 a/ X8 x' W; x0 h
mcasp = &MCASP_MODULE_1;1 p* }! X5 W3 P& e* z, s; H
mcasp->regs->GBLCTL = 0; // Reset5 U9 C$ P1 [, L9 U5 \, `9 }( O- V
mcasp->regs->RGBLCTL = 0; // Reset RX( y( o! \% G0 x8 C3 S
mcasp->regs->XGBLCTL = 0; // Reset TX7 z+ g1 ` a% ^7 u% y. }0 @
mcasp->regs->PWRDEMU = 1; // Free-running) G$ J3 p- j3 n2 i: K9 t
// configure McASP0 receive registers. Q5 t+ m% I( i% P
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
) U( l% Y1 S" h6 B) S& q* d1 s mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
% }2 U+ g4 ~6 T1 Q' Q( h2 S mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word& D) ]+ d( w8 Y" e3 N
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
7 h* \5 a6 b8 q( n2 U, K mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)9 b, V5 j, e' a! ^1 n1 E3 U/ f
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
) R7 z3 @) T4 Q1 h* ^ mcasp->regs->RINTCTL = 0x00000000; // Not used/ n* z p) u" P/ {9 K
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used% D2 z( z4 D5 W+ H6 F8 ^
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
: v f; l' q4 n mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
* s) r0 ]# g9 g! x) ^0 x0 ` mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16: P6 K: j* V; r1 V7 h) T
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
- Y6 [' C8 Q9 Z8 ` mcasp->regs->XTDM = 0x00000003; // Slots 0,14 X1 ^% d) q) s
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
2 V. E, E2 Q! X mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256 b% Z8 v/ c6 g# l& m! {
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN5 K7 q, f- j6 F* j. {( @
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT0 U# I6 l: f% m8 ?8 m3 e1 }" O& r
mcasp->regs->PFUNC = 0; // All MCASPs
! G' x3 d$ `6 g( y7 @ mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1- k/ j r5 t' A/ k
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mcasp->regs->DITCTL = 0x00000000; // Not used, l9 g: \7 a! S/ j* }9 W, d
mcasp->regs->DLBCTL = 0x00000000; // Not used
' Z# B7 M" E/ q. {; E9 x mcasp->regs->AMUTE = 0x00000000; // Not used
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- x. V. ~, ?, ^0 b6 u/* Starting sections of the McASP*/ v+ c' t" Q$ a: O
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 0 a) J" _, M! O* M
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
3 L; B( o9 L4 i" N8 i1 r- O/ B* O mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 6 F- L5 T7 m7 y
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 8 ^6 U, k. i) T! h
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
2 b) x' G' T0 ^8 u mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
?* s/ C, l1 }+ U" c0 k0 k while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; ( Q- r$ f7 u5 k+ j- q2 U6 F
mcasp->regs->RSTAT = 0x0000ffff; ; m& h( ~* N i3 q/ S# A
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
; H& I0 |, d6 _! ]. P/ b while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
. x4 w' X: _3 v+ A A8 Y mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; % Z4 p$ y3 h+ {- b: ?% o0 g
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 */! s+ f8 |9 Q L T" _2 t1 J
mcasp->regs->XBUF5 = 0;4 [% ]! @: L! l! L$ ]
mcasp->regs->RBUF0 = 0;0 U: O- C- U: v9 Z: E. r. E
. K# ~0 {. A* O' j& p mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
0 ]/ w5 d4 y. f& Q while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
8 W1 t& V0 @- p: k$ k mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
( |) e: r! Z) G/ U while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );% t* b" T3 ]- r
( r3 @8 z$ }2 R- G8 }( D: l" z mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
3 g) W/ q- s/ ^ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
. y5 F7 ]$ T8 D2 o9 l: o! K mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
, C9 k8 O0 h" u6 o6 Z& r+ a7 h# R while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );- C, k7 I$ |/ Z$ B$ S4 k7 |, ?& r# R+ @
# I, f$ c' t* s) s; a P6 w CSR = 0x0000;
1 V3 y5 a5 T2 ?8 K1 `/ r% b& n' e INTC_INTMUX1 = 0x3d;" K& a1 v+ j" m( a
ISTP = (unsigned int)vectors;4 | G1 }* A4 b t: I% {' H
ICR = 0xFFF0;
7 b5 o$ u, R/ g* @. L9 z& c/ W IER |= 0x12; & P/ V3 h( p1 p2 Z
CSR |= 0x01; ; N; e4 M. i# d( V* d$ T( p
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$ t D: T0 B0 q: O+ {还有就是两个输入输出函数:
! C, |3 f% L! Tvoid output_sample(Int32 out_data)
# n& o- h( ` N2 n{
* P' B; i" B+ ]* y- U- u AIC31_data.uint = out_data; 5 A' A0 _8 n+ c# L
MCASP1_XBUF5_32BIT = AIC31_data.uint;, _! B& U. [6 Y) s# n- i/ }/ b
}! C- T* z. N( F: b3 }7 J
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Int32 input_sample(void)) g. r0 a5 ~! t) X. J' j! z
{
, F3 z' Z! ~( ]' M, ] c' E AIC31_data.uint = MCASP1_RBUF0_32BIT;8 Y- |6 P) [8 M7 V: G
return (AIC31_data.uint);/ E8 Z/ K7 m3 M& M9 W
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