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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:' f* @, ]1 j+ R0 U: ~
main文件:
( K; a( ~/ e, }interrupt void interrupt4(void) 2 I" t3 I7 G6 _( |" D
{
- N; g+ _- w7 Z8 d4 p4 K$ z: U: u Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC: Z6 d q& I6 p) y! }4 J
output_sample(sample); // write L + R samples to DAC 1 a" N1 w. ?6 ^
return;
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7 R6 O5 ^" s( }) I& V" J4 I' x; W, {int main( void )
: D7 R) \: {7 A( a9 w- t4 W{
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/* Initialize BSL */
0 [! I0 Q# ~0 {+ S EVMC6747_init( );
1 D3 l6 ^! m: k6 T$ Y; w /* Call evmc6747_intr function */
" x3 W* p! x; p aic3106_init( );" [' s0 L0 g! ~ C2 t
while(1);+ m. j. v) @) P: L# `" o# l
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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 E8 }+ t% d+ W
/* Initialize MCASP1 */
( `! h( k/ i' x( b' ] mcasp = &MCASP_MODULE_1;2 B) l( M$ W! U# k+ j
mcasp->regs->GBLCTL = 0; // Reset) ^) t- r- _5 ?: M
mcasp->regs->RGBLCTL = 0; // Reset RX
7 e8 M" Q. S2 J) D7 e9 c0 G4 M! C mcasp->regs->XGBLCTL = 0; // Reset TX
) C8 v& {; q: u" o# Y mcasp->regs->PWRDEMU = 1; // Free-running
. O5 [0 I' M; L* M5 [8 t# G; e // configure McASP0 receive registers' F4 a1 @' V& c- O
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
! y h! c6 t& J8 v1 X- O7 m mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
2 q: V+ N& v- v mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
5 R& w3 h5 R# Z: V4 \ mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
9 l( D) o ^6 E mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)' b6 ~6 u( H$ P5 J x
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
9 i1 x( ~. N( ^ `0 w mcasp->regs->RINTCTL = 0x00000000; // Not used @$ Q7 b( p' e4 L' v) x/ p
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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4 L& n+ ~" V5 O+ L9 W: l& k p+ ? mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
+ _4 x9 T- T) P% E. X# h mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus t$ e4 Q: w4 @5 W
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
( P r q! g" a/ j( | mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16/ s. [' c/ U. t
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
% R" o4 j! X3 b' S/ l3 v( W% I mcasp->regs->XTDM = 0x00000003; // Slots 0,1
4 J. k' [( {0 r# u; P mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
6 t# K! Q. v, w5 u mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
$ X- I# \1 r7 B2 k3 w( P) X mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
1 G+ C( C6 J# m& F mcasp->regs->PFUNC = 0; // All MCASPs) P, O" j. q7 j( z7 D
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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! h; ~3 E0 l3 {7 w0 ~ mcasp->regs->DITCTL = 0x00000000; // Not used- l: |, }* b5 m/ s( ]' L& O
mcasp->regs->DLBCTL = 0x00000000; // Not used7 ~9 J7 u8 r4 T( S* L" `0 D! A
mcasp->regs->AMUTE = 0x00000000; // Not used
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/ H1 ^ V9 l8 Q" [/* Starting sections of the McASP*/
# l& l1 E. k4 D* q7 i* z( O% z4 o mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
9 p2 J @: j# i" I, q+ a$ k while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
# i, X, x% \1 L, W. S' ] mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
. I5 Y _6 e- ^4 T' J* Y. ]/ [- }% x while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );& P! C* w2 @# ~3 R4 E+ ?2 Q) W
; M, }. J! A# ^0 c7 T# W; ] mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
( G$ [/ _: w, u$ ^% J while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
! q' @& A7 _# i* h9 s mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
) K4 r: L8 B1 G- }4 k while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );0 E2 U% g: u! Q) I; Y0 |
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mcasp->regs->XSTAT = 0x0000ffff; 5 z7 I8 p. k! \# ~
mcasp->regs->RSTAT = 0x0000ffff;
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R; a$ b; u% ?' k) d% p3 i mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;# q$ h! V4 N5 v+ b1 m0 _5 p
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );1 y' y" A O9 l8 D- N b. O
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
3 _6 U2 q; A6 ^/ L) n! w8 j while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );4 j8 z7 N1 G$ q% H, N/ Z+ c
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/* Write a 0, so that no underrun occurs after releasing the state machine */
7 Q6 K2 d$ G8 F$ F1 v mcasp->regs->XBUF5 = 0;( |" i R6 z/ o+ k7 R2 W
mcasp->regs->RBUF0 = 0;
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8 H- P* A6 J6 L6 C5 j5 b% o8 n mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 2 A L: X0 Y' g
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
) A0 S, p1 K' P( a3 n( ~+ Z. p mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
/ ?+ U; q3 u A9 O5 B while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );2 \. ? x+ M! [
9 @* l5 p/ a X. o$ ~ mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
/ o; h5 \. e S8 P! | while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );" B E$ G; D2 |0 O- D
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; : C6 Q7 w' ` Y7 K3 H
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );1 s& U& j' o y( {7 y
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CSR = 0x0000;
- H7 X# [, K" P; v# ?/ _ @ INTC_INTMUX1 = 0x3d;- |" D% {9 |+ e3 K: d7 L
ISTP = (unsigned int)vectors;3 P. g, U0 C; x* l3 h
ICR = 0xFFF0; ! L3 B2 l$ S- d8 U5 w* Y
IER |= 0x12; \( T% o+ J: P
CSR |= 0x01; # H9 C/ }/ e8 J. M- j) c
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还有就是两个输入输出函数:
- l4 d6 E& x3 T& tvoid output_sample(Int32 out_data)1 [6 L g5 o, m* T' V$ T( d g; I
{
8 u1 l* N# i5 g/ C8 z! i AIC31_data.uint = out_data;
1 u, B2 w q& B) c0 M MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
4 j. d+ \2 g4 j! o+ T# ~' Z return (AIC31_data.uint);+ A# v; r0 x, }& H' B! f
}! I1 l$ Q2 g8 h. \& B3 V, u$ z
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