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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& X- \1 o/ J/ I, F% t5 F
main文件:
3 n3 `( K: X+ j8 Uinterrupt void interrupt4(void) / m' i, \* B8 K9 q
{
7 a& g) z9 {. J2 u( L# U+ m; K d Uint32 sample;
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# E1 N. a- h1 G. Q& Z sample = input_sample(); // read L + R samples from ADC5 y# z" I) n! b0 |3 u: l: y$ V# ]
output_sample(sample); // write L + R samples to DAC % _+ v* C9 }4 d3 ?8 K4 Q
return;5 p8 [& A: s9 T. X# h
}
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int main( void ) y3 K( k: S1 {( k, T* W) V2 \ i
{
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9 I$ x7 d7 }# E% f /* Initialize BSL */
7 w0 Y7 b+ [$ {0 Z' F: J EVMC6747_init( );0 g n3 O& X0 {1 K+ w
/* Call evmc6747_intr function */
+ C- {- c3 P6 h4 ^- J/ g( F aic3106_init( );9 k9 _9 p) R' `% W' ^
while(1);) R0 F! \! j; k9 n: D
}
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# E" j; z$ a) Q$ r
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
?+ ?1 l0 {" g% Y/* Initialize MCASP1 */+ g) |: ^4 G* s, P$ k' C4 c
mcasp = &MCASP_MODULE_1;/ S. x, ]3 M9 h% J
mcasp->regs->GBLCTL = 0; // Reset8 u% V x! h8 C4 w# T
mcasp->regs->RGBLCTL = 0; // Reset RX
, i: m' x' \6 w% C- \( w mcasp->regs->XGBLCTL = 0; // Reset TX
+ W0 J. ~, J' W mcasp->regs->PWRDEMU = 1; // Free-running5 ~- s' x$ a& p3 M) V
// configure McASP0 receive registers
2 ]' }4 o$ h7 i- ~) r mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used( N; A5 x# @+ r' J3 }
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus4 ~- U y0 r- T" G& n; Q
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word- r. l; P. \$ \- g8 ~
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)% C/ q% W! J J# \
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
0 _, M p1 v0 w% G' D* [; K+ _ mcasp->regs->RTDM = 0x00000003; // Slots 0,16 A0 h7 A! H/ w, ~
mcasp->regs->RINTCTL = 0x00000000; // Not used# y+ M! {3 \. t( a
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used5 v% t+ }' G4 P N+ t8 `
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus/ h6 z$ L w( Y6 d/ k. H3 ~
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
- x' [* M+ v1 U7 i$ W' s mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
! v0 z- r- u, x5 G mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
( S, n b# ?, P mcasp->regs->XTDM = 0x00000003; // Slots 0,1
) w4 y2 e+ Y) g. f$ G+ k mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit8 B2 K$ w: }" |2 @2 U6 `7 |" S
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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& k9 |1 t! q, ^) [3 D: K+ O mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
7 C% e1 e- }) i! I2 S mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT9 d; j. \) Q& D: g/ G
mcasp->regs->PFUNC = 0; // All MCASPs
2 \/ K$ V8 X1 o) I! {8 ~: {" x mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1$ u* g2 t0 Q0 y1 x Z
, }& T1 |; D1 o1 r z mcasp->regs->DITCTL = 0x00000000; // Not used7 r( N9 `' |, } o
mcasp->regs->DLBCTL = 0x00000000; // Not used. Q& ~8 @% F% G2 a; W5 ?) _0 ` a' V
mcasp->regs->AMUTE = 0x00000000; // Not used
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7 Z. J/ |) X* c/* Starting sections of the McASP*/
; Y3 e7 x: M I" h) e8 x. ? mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 8 X& \, ^* t n/ @( ^6 p$ B
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); . _( m& G. L1 g2 `5 ?" K) Z
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 3 p8 D3 h. j+ D
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
" ?! b* [' K6 [$ f0 A! H while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
8 a6 T! P/ D2 m) w mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 0 f% |; b% G8 Q" ]% v+ u3 F5 R: r
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );8 f9 j* S; I4 O6 @, S8 ~
" r7 G j3 j' D% n mcasp->regs->XSTAT = 0x0000ffff; % q* O: m4 Q. }. w+ P
mcasp->regs->RSTAT = 0x0000ffff;
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3 g. U0 H& W6 r mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
; f/ i5 h- X2 @8 Q* a( d while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );2 a5 ?7 r+ @2 R
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
# O/ J3 }' i* V7 V4 O" E while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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- y" K$ M( w3 L6 @$ Z2 J7 z /* Write a 0, so that no underrun occurs after releasing the state machine */+ J" Q( j; n, Z, m- F
mcasp->regs->XBUF5 = 0;
" S# y* N; u+ j# S: j4 M mcasp->regs->RBUF0 = 0;( s- K/ r- e$ B! `1 m3 z& A
8 }$ n; A3 n9 o: } mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 4 d; a" X0 x& x9 E9 q6 `' N
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );' i0 @6 z; o' r# d) \: \
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
! B# p, O# x, R2 V% C& Q1 g0 o while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
3 |+ r9 P+ d$ W% h- n B while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );' b: ?! U/ [* @9 X' K# E4 u
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
4 o. T' G3 r7 g1 p4 M3 V while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000;$ j4 i! |2 N; P# s8 v2 I# i& e
INTC_INTMUX1 = 0x3d;
' i! i7 m! D( D3 U/ W ISTP = (unsigned int)vectors;9 R& D) [% ?! r) V( i/ w2 m
ICR = 0xFFF0;
$ z( h" j& K! l) E8 L% z ] IER |= 0x12;
/ W7 N/ w% d' Y( [' H- F. o CSR |= 0x01; F& e& U& V1 b. o' o
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0 L; i* y* U" L( h3 o4 ?: E1 f$ X还有就是两个输入输出函数:
2 g( x4 b. X& D) Avoid output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
) F% i; i0 A0 \* x$ M4 g MCASP1_XBUF5_32BIT = AIC31_data.uint;3 p, N% ^$ T4 I8 d. d
}
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Int32 input_sample(void)& }4 @4 |. h: ^, O0 B, S( ~
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
8 L+ `" \: O* y. D! E1 q return (AIC31_data.uint);
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