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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:
$ u$ t5 ^& C8 b e( Y, W7 B4 mmain文件:# N$ p! M1 h4 K
interrupt void interrupt4(void)
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/ K5 [/ u0 D2 T' R Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC) s) `! m0 j/ U3 J% \) F, O& x$ }5 m
output_sample(sample); // write L + R samples to DAC 3 C3 j T% f" x# y/ ^
return;
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int main( void )
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/* Initialize BSL */
3 {, H& D5 Z! ^( U3 m EVMC6747_init( );
! Y \! `/ L/ |" Q: V, M7 o \ /* Call evmc6747_intr function */$ H* C6 M5 e3 y, O7 x7 \
aic3106_init( );( a# r! e# r8 s& X
while(1);4 m7 j% u' q/ h5 u) |: K
}
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* K( l2 Q) V* f1 U; Z I( m) Zaic3106_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 n+ N" `7 @$ \
/* Initialize MCASP1 */
* i3 s9 k _% a4 D5 ~1 j% q mcasp = &MCASP_MODULE_1;; ^% B/ V+ X/ k' u1 f# D) y
mcasp->regs->GBLCTL = 0; // Reset
) {1 K" e* Q( T- O; r K1 a( } mcasp->regs->RGBLCTL = 0; // Reset RX
% N* L( _" T5 s# @ mcasp->regs->XGBLCTL = 0; // Reset TX/ K. o7 [: b. c" y& u+ h
mcasp->regs->PWRDEMU = 1; // Free-running
9 B0 F5 u0 ^" \- L // configure McASP0 receive registers+ Y% |( |! c5 X/ i1 @- r
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used& I) N1 h x. `7 j F, q
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
- x' ~- _) V" j" O# b) a2 e( M4 W mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word$ K5 m0 @; v4 B7 J
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
5 o; I- ~+ J& E% D+ X4 n2 I" p mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)9 @. v1 ?4 p, h- z" u
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
! D$ n! {1 | R) I; J6 z mcasp->regs->RINTCTL = 0x00000000; // Not used
d) V3 T7 q, G* u mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256& F" z# K1 D8 r9 f0 L2 Z& y% y+ V
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used3 Y9 D4 D( I& G- a2 C4 ~5 G* b
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus! o: T! c# T; r6 R! @" g. r/ j# q
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word+ I' n/ i# Y2 G& m" X' S
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-168 H6 E& d |& ~* D+ ?
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
N _2 y1 ~5 ?1 L( n mcasp->regs->XTDM = 0x00000003; // Slots 0,1% P, F' `2 |- Y
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
0 N: r2 [) R* L4 Z& u" F+ S! I. y, ^" C mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256 F$ k' }4 {5 p- U$ ]) O2 n
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
+ e4 L3 Y" U. E: s) x" [# X X1 a6 C mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
# v5 g0 {: b6 I, \& x, ]% L. a# a mcasp->regs->PFUNC = 0; // All MCASPs
! f& t3 j* E# O9 Q* H( q8 A5 G mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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: X Z- ^ D8 |& n3 v mcasp->regs->DITCTL = 0x00000000; // Not used
) p0 _0 O$ f- ~" b, B mcasp->regs->DLBCTL = 0x00000000; // Not used" Y' C# O9 L# y' `+ ^
mcasp->regs->AMUTE = 0x00000000; // Not used; t( m/ f4 G% H7 b$ t5 i1 ^
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/* Starting sections of the McASP*/
+ g( Z5 \0 V' w/ t2 D# [ mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 2 A/ C3 ?; }& O0 d8 ]
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
! w) c( n! g* u. T# S1 C mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 3 d0 Q l& V7 G/ g
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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7 p0 u9 W7 d3 o" j8 t mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; / N0 u! Z* x- z7 f2 F6 B
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );" _( D! g7 L5 P/ a' U7 G
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
, R0 A: K9 W5 A! J1 [ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );1 W/ o" q# w; P. H% ?0 x K- t8 q7 {
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mcasp->regs->XSTAT = 0x0000ffff; }- Q* g6 _/ W- f8 u
mcasp->regs->RSTAT = 0x0000ffff; . c* d8 ^5 _% W. B7 Z3 N
5 h/ j# g# D/ ] mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;. m7 O7 R5 [, K2 `) R+ S
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );9 e# U, j6 J8 J
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
8 o% }6 G# U2 G) V4 E. s0 T4 y while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON ); p t. [+ @4 Q7 n [# I" g
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/* Write a 0, so that no underrun occurs after releasing the state machine */$ F# [' [/ E1 s5 G% {
mcasp->regs->XBUF5 = 0;
; V+ c: Z) z Q' o7 b mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
# ?- C* n5 _/ l while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
$ g9 J0 \3 ?, _2 I: H mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; & b6 _1 {2 A2 s" c: K' |
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );- k3 L' t/ L8 |. C
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 0 G6 \3 P" ?/ U6 U1 R/ `" b1 y
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
" B. w) r2 o9 p; I4 V$ p, H% ]+ b mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
5 p5 j! v% Q4 m% w! m# C3 T while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );3 E& |% [$ k" l1 o% p# U% a
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CSR = 0x0000;$ o3 r, N3 B( E, C* [1 P
INTC_INTMUX1 = 0x3d;
( n1 e5 l5 ], r; X9 \( ~% P4 u ISTP = (unsigned int)vectors;5 h& O6 b9 y: ^- Z# \* L% ~% ]
ICR = 0xFFF0; . m* t9 p# T+ c1 F" A$ _/ H5 k* i
IER |= 0x12; $ S/ M4 Z( ?: o* R
CSR |= 0x01;
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还有就是两个输入输出函数:, j% D% N- u: B) B$ O
void output_sample(Int32 out_data)8 G. [ Z& W) ]( M8 _& d# v
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AIC31_data.uint = out_data;
, I: B8 w- @, ?* P4 r1 w MCASP1_XBUF5_32BIT = AIC31_data.uint;
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w+ k: G q! ^( z; J6 XInt32 input_sample(void)9 t" y5 h% _$ S
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AIC31_data.uint = MCASP1_RBUF0_32BIT;6 M( N9 ~- p3 i0 B* | G
return (AIC31_data.uint);
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