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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:
: o; l( @2 t! qmain文件:& _; N8 |& f* T1 A- w& K
interrupt void interrupt4(void) 7 [4 F8 {0 c+ \* j. ^4 j& o
{
* @4 O, r6 |& `: G( [ Uint32 sample;
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- A' k/ Q1 g% c! \: e sample = input_sample(); // read L + R samples from ADC% z2 P/ u0 q7 ?/ B6 l+ @+ y
output_sample(sample); // write L + R samples to DAC 0 V8 i' c2 I$ |$ o9 w
return;1 t. p# [9 G# x3 x; D! p
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) L4 b) N8 T% U4 L3 Eint main( void )
2 n/ T# [2 R" g7 t: q8 |{ V- _) R$ S6 P0 X) \
) e/ w7 r4 N; ?+ j! o! I /* Initialize BSL */6 u0 F' u$ k+ Q5 A) S/ b
EVMC6747_init( );
- U2 b: @6 V" ?% e% j4 o A /* Call evmc6747_intr function */
1 W; N2 K' G" g+ a6 z aic3106_init( );7 J4 z' [ s) G2 k
while(1);7 L: y- [5 Z( v: B8 ?9 z+ [
}
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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
; a- {1 R% M9 i: \. b- A' E& K/* Initialize MCASP1 */$ T6 h5 K$ J; m! b
mcasp = &MCASP_MODULE_1;
" \3 T4 g' O' b5 K mcasp->regs->GBLCTL = 0; // Reset+ {4 i& |* h3 | a5 n d
mcasp->regs->RGBLCTL = 0; // Reset RX$ t4 D2 }: E* o& |- S( F, c) `
mcasp->regs->XGBLCTL = 0; // Reset TX- `$ [& p2 g* E1 r5 v
mcasp->regs->PWRDEMU = 1; // Free-running
/ C9 K7 e) q9 `0 P. S5 ` // configure McASP0 receive registers# t' i, x5 y1 p- K: g
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
. Y5 i* S7 _3 ]( J0 e3 F4 n mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus. h ?8 y0 v" j# I& ?5 z0 A
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
% V4 o/ R o$ I mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
! ?; O7 `7 R' ~) |! g1 } mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
" {4 h- t$ y8 K7 |9 d7 S6 S( G mcasp->regs->RTDM = 0x00000003; // Slots 0,1
! {0 E/ D5 u8 T [ mcasp->regs->RINTCTL = 0x00000000; // Not used, ^; E& X8 T7 d+ }
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256: E8 V/ v& c& {+ y
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used" v3 f: `* u' }; u2 O2 A+ q9 Z, F6 J# ]5 `
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus: E$ C2 w* a1 B1 A3 C5 D
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word1 F& Q1 \2 e) E n8 f% ~
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
$ E1 D8 ~ {5 e4 u/ w7 S mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK) E) J. r, O! Q e' ]+ B/ ^
mcasp->regs->XTDM = 0x00000003; // Slots 0,1/ a* J$ @% S: a; x+ ~6 E
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
; X1 h, s+ o, ?* @ mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256* n/ E* T: E+ O2 j/ o
. \# H5 w( n& G% r6 Q mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
" `/ |6 M/ B% Q4 K, q# `/ f mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
- s# x' ?0 A# N) I; E mcasp->regs->PFUNC = 0; // All MCASPs
2 ~. c6 t$ W [# d mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1# M( P* i6 n$ K( w. U
' O# u% v: E& C' w' c: ~/ j, K: f5 N mcasp->regs->DITCTL = 0x00000000; // Not used
6 J) \* {$ a! t; l a! @: W mcasp->regs->DLBCTL = 0x00000000; // Not used. r) b7 J5 ]5 b: Q
mcasp->regs->AMUTE = 0x00000000; // Not used9 B9 q1 i9 x ~% P" D: s% @
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/* Starting sections of the McASP*/
/ e3 h2 O7 l S4 { n$ V4 G mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; ! b' n9 e$ n- J" c6 g) W* y
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
" a i* q- m$ U# M0 }- { mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
, b) r7 u6 w, T w# g while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );% w; Z; h1 V8 r {( r2 j
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
6 S+ Z7 |$ N) w: S9 i1 T* q+ [8 d while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
C. j1 X2 U! x/ N' _5 c. m mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
1 R( B$ f3 f* _/ w8 O while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; 3 |5 {+ |: A$ H$ O. W9 q$ w. P
mcasp->regs->RSTAT = 0x0000ffff;
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9 o5 A2 A" G: T' Q; H mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
$ z; g. [* @% r1 ?# b6 ?! D while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );3 K4 c6 d. T5 \0 M5 B" I2 v) X
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; , k% z+ ?0 G, \( `, L0 V
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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* v: b! h5 w# m& G; Q! V /* Write a 0, so that no underrun occurs after releasing the state machine */! l i; g X3 Q/ h8 H; ]* S
mcasp->regs->XBUF5 = 0;
! l$ s1 M" B6 ], _ mcasp->regs->RBUF0 = 0;4 i8 E4 X2 E P; H9 M
' g8 D: w: V9 v4 Q/ _. _ mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
' Y# x4 Y% _% H, ?3 a+ N while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
* W3 R1 B: Q+ V7 Z+ v3 p& q mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; # V( f9 N) P, D* Y
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );" s: U7 c) ]# Z, a& `
" l' q% z/ y5 [# W5 A' T/ v mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
0 P/ ^% W" \1 z+ N8 ?" _7 T while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
/ I" }( y3 C6 ?; m! |0 ~ mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 8 ?# L) o# \+ y `4 @$ B
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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4 j" F& G% f+ o6 a: a6 ] CSR = 0x0000;5 i. W8 g5 O. K* ^
INTC_INTMUX1 = 0x3d;
( Q8 i; W5 ?$ B, e0 L ISTP = (unsigned int)vectors;
2 B6 |; A$ K$ F! y6 g: v ICR = 0xFFF0; 3 Z5 e& Q" g: f; o0 i7 L
IER |= 0x12; % _3 N# b4 g# I$ m8 P
CSR |= 0x01;
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还有就是两个输入输出函数:
4 J$ L `5 g# N8 d% Y7 d; g$ tvoid output_sample(Int32 out_data)% e: l3 E1 ?; n5 h
{
. t7 B$ ?! S) a! E7 t AIC31_data.uint = out_data;
# K: P9 x/ B: T6 n MCASP1_XBUF5_32BIT = AIC31_data.uint;
k$ o0 l9 h+ S}0 P: b/ n. W: U( h, }
& Q( I5 Z2 E2 A' w& h2 q. E
Int32 input_sample(void)% T+ l. k5 @3 O* c& ~2 D% r* ^
{
/ ]0 S8 G" P+ x. W0 v AIC31_data.uint = MCASP1_RBUF0_32BIT;4 c% {1 f) D6 j
return (AIC31_data.uint);
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