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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:- }5 Y! d3 ]' ?' H% a
main文件:
5 B. R/ {/ B U1 [4 Finterrupt void interrupt4(void)
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2 g! q$ \5 t9 g4 h1 v* ^9 z7 s Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC1 |+ |) A# G6 `& n6 t5 k
output_sample(sample); // write L + R samples to DAC " u- z* _+ Z% _- n: F. m
return;/ u5 S9 f5 |- |; a o- h
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" e$ [3 T2 D5 g1 }6 } \- A2 A/ `int main( void )
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/* Initialize BSL */' E6 h# m8 z9 i3 w1 _
EVMC6747_init( );' C ^; z @( o2 G! q! [7 c6 v) J3 p
/* Call evmc6747_intr function */
" o/ Y* u$ p! d0 ~) m5 |: B aic3106_init( );* @* _9 k4 W6 t; R
while(1);& m* E. @& z; M) t0 p# P7 I! R
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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$ E3 ~" y5 ~9 Y I- b
/* Initialize MCASP1 */' w1 o5 G& }0 b" b( K6 j( B
mcasp = &MCASP_MODULE_1;
; ?9 S. _, l! w mcasp->regs->GBLCTL = 0; // Reset
* m; {$ E8 `9 b( D( J- Q3 W, s$ T+ i mcasp->regs->RGBLCTL = 0; // Reset RX
8 |9 [! ]! _# r! l: e$ Q0 q mcasp->regs->XGBLCTL = 0; // Reset TX7 A, U# E7 @8 V3 C
mcasp->regs->PWRDEMU = 1; // Free-running7 }7 N# z7 b. ?
// configure McASP0 receive registers
" {& j" x) i$ V- K6 ]' \3 I mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used' y) V: K. m0 s7 `4 W* ~+ K: H- ?
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus9 P4 t$ f8 \# j. H
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
% @0 ~ Q; d: E8 W$ g) s" u mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)( c. E7 A2 b1 E5 P$ @
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
1 c$ B9 X' }* J/ U u# w1 y/ c% m mcasp->regs->RTDM = 0x00000003; // Slots 0,1
0 ?8 k. |3 ?% p, u# K+ I6 Y mcasp->regs->RINTCTL = 0x00000000; // Not used c7 p# v) O6 H2 x% _& P
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256+ ^) u9 T+ S5 z- {! W
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used( }% p; a. u4 b$ k. t) |: X; z
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
# {1 O7 e9 N* {5 v6 t/ }/ e1 r mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
. _3 d# E; R* z, Y" |6 g# K mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16. M, n; Q$ ?5 D# G; A, {
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
! t7 Z+ a0 j2 M5 J. n" n7 R mcasp->regs->XTDM = 0x00000003; // Slots 0,11 {: ^) A7 v+ G2 [2 f
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
0 M4 B, T x: o! F( b8 Q mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
# _, U% h6 M6 U9 C' ~. V mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
7 p1 g$ J; o2 p( Z# a" O3 ] mcasp->regs->PFUNC = 0; // All MCASPs
) c$ Q. e! M/ b- Z mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1% i* f* [4 T0 D
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mcasp->regs->DITCTL = 0x00000000; // Not used
: n0 V# _, K: k/ U0 R9 y mcasp->regs->DLBCTL = 0x00000000; // Not used
/ J: E; b. O+ ` mcasp->regs->AMUTE = 0x00000000; // Not used# r) x' }6 E+ P' j* n) u
% [$ _7 a( g* Z/* Starting sections of the McASP*/1 L" w3 i; R) i9 S
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; ; t# K+ H/ L, B L! Q
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
9 a/ O/ `" U9 T3 F1 Z7 T& [ mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; * A3 X9 u- z8 J; d' r) l% s
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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: ?9 {6 k% ~6 O. Y5 @/ Y mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 7 W% Y$ V7 B; ^
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
, e" n0 \; Z7 O4 B. ~7 o; h mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
) H6 l+ B8 B( [/ p1 J7 g while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );; t/ N, i$ K j9 d- E" C% W
0 n. K! C6 c( }' a a mcasp->regs->XSTAT = 0x0000ffff; ; N/ J3 b" z9 Y! u- o4 m" n
mcasp->regs->RSTAT = 0x0000ffff; / y# v) U! x- }! Q! l# M+ H+ V2 _
1 |7 N2 k3 a3 x6 M; P/ P9 h/ ` mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;, ]( G, b, X' R3 D3 C
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );% a3 a' a+ ^& E! I8 K
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
: c! C8 D& B+ L5 ?9 f( l( o1 m while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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' O! p) z0 \9 s/ d) a /* Write a 0, so that no underrun occurs after releasing the state machine */
# }0 \. \. d0 ?/ t- k mcasp->regs->XBUF5 = 0;2 y( l# l! \5 {" A9 o1 e
mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
5 A* _# o* e- `) b7 t while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
1 Z0 a% o c" ?2 n! T( N2 i& _ mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
/ \4 h) H* Z2 H% E( v" y while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );1 I1 x/ R! c0 H7 u2 T# P
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 2 s* n" v) k/ x* a& t
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );/ |* P. U% a+ j7 Z. ?
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
) R4 Z$ {& f) R3 Q; T while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000;
, k( @! ]& Y4 V) J( `0 [. C INTC_INTMUX1 = 0x3d;
) I% l( v5 W* j5 R3 f, k ISTP = (unsigned int)vectors;. F% w ]6 f. a( S& g6 a
ICR = 0xFFF0; $ W1 P# V6 P3 |8 `3 P" y
IER |= 0x12;
: p1 x9 Z: x9 D( n" F CSR |= 0x01; 1 {% E; `. ?. ?- X
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还有就是两个输入输出函数:
! X# T- H: U4 _void output_sample(Int32 out_data): {1 U% O) w! D# V) P. y
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AIC31_data.uint = out_data; . S+ B x4 p$ u' x1 Z1 P8 {
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;% w" c I( _# G, k! ]9 h
return (AIC31_data.uint);& s4 E% [+ D0 D$ q8 c' O
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