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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:
9 U# d' C( Q$ Q2 R. Vmain文件:6 K! O: B3 I% U9 O* f5 M4 T ~4 ?8 p& O: {
interrupt void interrupt4(void) ' H- K2 }. C9 \' x
{
& v0 c6 y' x; \- U Uint32 sample;
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6 W5 v, W( M; g sample = input_sample(); // read L + R samples from ADC
& B5 r$ }, n5 ~1 _5 B( ~ output_sample(sample); // write L + R samples to DAC
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int main( void )0 B1 F: `' z8 [! d+ o0 W
{
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+ W1 I* q* }1 W3 A /* Initialize BSL */- E& |* x0 N) ^2 i4 ~1 m& O7 o
EVMC6747_init( );
( W; N. l; V+ @/ V7 t8 H /* Call evmc6747_intr function */
! P* z2 Z- }4 {- w, Q aic3106_init( );7 }# V) M1 H3 b% P! U
while(1);
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7 X/ ^9 {. z6 D% x% ]1 v3 M$ }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( ?; P8 C- h8 Q! U# h
/* Initialize MCASP1 */- v% T( Q9 s! n/ V6 a6 `
mcasp = &MCASP_MODULE_1;8 g8 k, {- J1 y, B6 O+ {$ L
mcasp->regs->GBLCTL = 0; // Reset
! e5 u8 J% X F mcasp->regs->RGBLCTL = 0; // Reset RX
$ f5 z+ Q# O- i- x0 t( M4 r mcasp->regs->XGBLCTL = 0; // Reset TX
* @2 y4 S. U% v; F mcasp->regs->PWRDEMU = 1; // Free-running
/ l" B/ p# o6 N // configure McASP0 receive registers! ?* ]& a* _# i9 s W! |
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
2 }3 u5 j; _" p; [* ]/ t mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
# Z. \+ ?7 v) P, E+ J6 w5 x9 g* q mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word/ z' z. q8 O$ a- b6 l5 C
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side) |( f2 c1 `( p, P1 ~2 g
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
5 V8 m0 P1 ]7 m& z& T, k6 ]" ?0 F: n mcasp->regs->RTDM = 0x00000003; // Slots 0,13 `" x3 T5 {& D* M
mcasp->regs->RINTCTL = 0x00000000; // Not used
7 B. t ~; c% M$ i5 K' L8 A2 c mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used! t E3 ~& O b3 U1 V2 \; @6 E
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus: g. ]7 g5 \- L, e( F
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
1 z: Q$ J4 @, I& L7 X! { mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-162 x$ p0 o6 A- T$ ?4 ^% T
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK" ^8 R4 J" u6 Y, p+ c# \
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
5 j( `9 q. _/ X* n S/ q+ \0 H mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit7 \* B. h: S# q! [4 s4 i
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN" _* Z3 O: v3 d" z* H
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
" \5 B2 q, N( \# t" W mcasp->regs->PFUNC = 0; // All MCASPs
+ y( k9 [! @# ?" ?% h* d) p mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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( i+ g: N3 ], d mcasp->regs->DITCTL = 0x00000000; // Not used
" @7 k4 t6 C- v- |- n$ D2 I mcasp->regs->DLBCTL = 0x00000000; // Not used
! q$ W; k. }# a% o mcasp->regs->AMUTE = 0x00000000; // Not used& {: T/ e& L% z! Q" S' e
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/* Starting sections of the McASP*/1 j; W2 A- D0 @0 l0 x8 {0 J1 d9 `
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; ; e8 z# O$ C6 `% w4 g! s
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); $ R: o4 P1 O7 T. P% ^
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
2 n; ]" X3 F/ J; G5 \( Z" ?& O while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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. Z+ m- C5 G0 } T3 q mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
/ N8 F8 c$ G* b+ r! L while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );/ p7 |- Y( _' d
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 3 u+ W* A& @/ v; r# _" h7 ?
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );1 }, O& m' l- a1 {
9 I X( ]0 X3 x& i8 r& n" _ mcasp->regs->XSTAT = 0x0000ffff;
0 z, P. V! g* [: F mcasp->regs->RSTAT = 0x0000ffff; / Z$ C( f0 C: @, d5 l
; j( o: x2 h; `6 A! Z mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
5 e/ p6 @$ x! |( o) U+ k3 ^ |- ]/ b while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );1 E9 q$ |; }( U2 n2 \
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
! Q, z, E1 @% |- f: s; V% n while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );+ K' p7 L5 i7 q
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/* Write a 0, so that no underrun occurs after releasing the state machine */
8 C" |" }; ~- f5 v mcasp->regs->XBUF5 = 0; J5 g e5 j" \
mcasp->regs->RBUF0 = 0;2 f, p9 U9 v. t9 u/ s" j- B' I
) A2 { S4 a- N9 |0 [+ U/ N mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
9 ?) L/ y/ N. t2 l V while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
! V5 n0 d8 B6 D# _* {! s! R mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; ' J' j$ u& k, [2 I! h X* Q
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );( }, }! e4 t$ b- z* B
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; & g" F: o9 I* H; P1 |- B2 D
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );6 \' F, G. D' L8 T3 W2 R% L( r+ J
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; + w! h; {5 [3 i4 e
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000;- N$ p" ~0 x3 ~
INTC_INTMUX1 = 0x3d;
! ^- Q( H4 @1 F; n ISTP = (unsigned int)vectors;4 f6 P6 B. J7 w0 x Z& l, h g$ \6 R
ICR = 0xFFF0;
$ @- \7 u/ N2 _2 ] IER |= 0x12;
' u. ]6 F( j: E' D CSR |= 0x01;
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9 g$ K; U& A- \: _还有就是两个输入输出函数:/ p% A$ ~ g* z
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
o6 a! D3 Z8 x* N/ ] n1 h- \ MCASP1_XBUF5_32BIT = AIC31_data.uint;5 ]. j% W8 Z8 f' x3 \1 Y
}
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Int32 input_sample(void)1 o ~( _5 N# n* U
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AIC31_data.uint = MCASP1_RBUF0_32BIT;6 n! z, H5 k; w. P `
return (AIC31_data.uint);6 M. [, K( ~. M, D. P! q, s) D
}
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