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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:: L5 N* k( M- l' V3 \. | N3 K
main文件:2 {6 @- E& i l, L
interrupt void interrupt4(void) $ g0 _! c/ ?0 D+ c }
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Uint32 sample;2 ?3 o$ w# d! U% M; G5 C+ f1 E, H! m
5 ^/ p( M7 V2 [" \ sample = input_sample(); // read L + R samples from ADC' { r" |, O/ C
output_sample(sample); // write L + R samples to DAC . \1 x' W' L' x' m2 T$ W3 q
return;
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) U6 T- o' ~# Z( p) Bint main( void )) J' N6 u& J* P( @, M
{
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/* Initialize BSL */2 K. X* t% j2 ^9 I/ C5 v9 Y8 K
EVMC6747_init( );
* l, f% W% G3 U /* Call evmc6747_intr function */% l) x# y# D& n+ C7 _- A
aic3106_init( );- {. N5 Y- |1 k+ V" T. }
while(1);: w4 {2 ^0 \5 n/ B6 e2 [$ d2 v
}
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) F U. l3 D" Z4 n! G: oaic3106_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0 l! v4 K! m& Z- d3 |
/* Initialize MCASP1 */
t; w4 d( d& V4 L mcasp = &MCASP_MODULE_1;3 b+ k" V- d: y! v. L
mcasp->regs->GBLCTL = 0; // Reset X0 `+ R' [" r* Y9 w( `2 j
mcasp->regs->RGBLCTL = 0; // Reset RX9 p: @+ U. A6 ^, D3 s
mcasp->regs->XGBLCTL = 0; // Reset TX
& i% J! e/ {* {/ n0 J mcasp->regs->PWRDEMU = 1; // Free-running
5 H2 T5 T! _1 A" W // configure McASP0 receive registers, q% _) h" i: U, q, N
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used8 I3 _8 h* }; b3 a
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
9 V" K, F. Y0 b6 X mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
8 I5 m0 V! b/ [; B; C% }7 a mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
7 M6 d+ |* ~7 \) s: B3 U mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)% T, N* O/ V$ b9 P
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
6 ^ h8 e. e2 g4 m3 X mcasp->regs->RINTCTL = 0x00000000; // Not used
% Q& y {! h, ? mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256$ H4 K# _ w8 _) I% T/ K% y
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used7 n9 W) b$ X; T, v( {. |
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus1 F* C) ?: j( j2 v6 |/ P
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word' {4 Y, g2 c& ]9 N) I& _/ W6 G
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16/ @6 S. B& {0 S' g' j
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK/ E, S7 M3 K4 @' k$ v B; P2 a" b
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
6 t. j _- Q2 G0 b+ |0 v/ z+ K" N mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
8 M9 q4 W8 k; R; v1 Q, h. p% c: U2 w mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2568 K2 H4 z* _, A/ W& v4 {4 m! [
$ {6 ?2 O; r2 X9 G% w mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
2 s1 U8 Z) D7 g mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT. g- M7 I% L2 A3 y' s) E
mcasp->regs->PFUNC = 0; // All MCASPs
2 h7 {5 C8 |! x3 A( Z: b& m mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1( m; T( c3 x. _8 W4 U& x; F
2 i+ k# Y: E3 W& ^+ n$ | mcasp->regs->DITCTL = 0x00000000; // Not used
1 t$ Z! L. o2 W0 Z% f6 [) z mcasp->regs->DLBCTL = 0x00000000; // Not used' P7 w' m5 b' N" t: ?
mcasp->regs->AMUTE = 0x00000000; // Not used
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3 Q# c, I" g6 f9 G5 P/* Starting sections of the McASP*/5 f& v9 y+ s# m5 ^
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 2 S) C8 x# _0 h$ K/ f2 @
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); - o6 u1 T9 o7 I# p
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
0 I% o# q3 T: B5 V while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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2 u, q: ^: i. x6 `8 ~# c mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
0 d+ v4 J1 i3 J# {# a5 | while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
B0 c* A# j8 Q) z8 I/ E mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
, \2 }' {+ q5 N while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; % _- w; R- w! h' }
mcasp->regs->RSTAT = 0x0000ffff; # N$ d( \+ I* u T8 X/ j
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
5 m( b; N# ?( B2 y0 ] while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
( l3 I) }" N/ A: d. z mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
& F4 c" Y& w/ z) X, \3 j while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );8 [) Z/ |* ?" c/ t$ t
" w3 s. e3 S- w9 e- \% f2 P /* Write a 0, so that no underrun occurs after releasing the state machine */' m( c2 `9 h+ I" p8 d
mcasp->regs->XBUF5 = 0;
$ z" P8 M/ I" ` mcasp->regs->RBUF0 = 0;1 ?6 z; s: c4 S$ |3 |
' O: @: @# {3 C. j1 l mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
. F( F# _9 |; g8 d5 ?# A while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
# t; T7 t1 Y9 {+ L2 q mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
8 E9 P: f5 @* Y; z$ m while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; " [5 U2 I3 O/ A
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );, t/ h& v& O# a4 F8 l# @2 X
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
9 L0 O. |3 I: t3 q, I3 D. C while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );0 j! V5 k" m1 S% E; ^' Y- Z
3 u( r- {& Y0 _7 q- M CSR = 0x0000;, b4 U; m/ ], u6 z/ x
INTC_INTMUX1 = 0x3d;
! i q. l4 j. J1 A6 b: N ISTP = (unsigned int)vectors;
/ x- l' p$ V4 i. J ICR = 0xFFF0; x3 j8 H) J" {/ U7 e; d
IER |= 0x12;
6 C, R4 E. y" n' @4 X i( w) S0 _7 p CSR |= 0x01; / X% j3 S- J, a7 `* S
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+ z8 W- X5 `: Q, e( M还有就是两个输入输出函数:) }6 N2 J- p e
void output_sample(Int32 out_data)
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2 a4 @! h5 @: @. {, ]% \ AIC31_data.uint = out_data; / B6 ?: p! ]1 P6 d) X8 l& ^
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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6 a- x" \( o8 ?Int32 input_sample(void)
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* P3 J% m2 ^; ^( B2 T AIC31_data.uint = MCASP1_RBUF0_32BIT;3 z! B# Z7 y5 @0 [
return (AIC31_data.uint);$ l" D0 ]( A! x* k
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