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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:0 {6 @3 M) U) n0 N: {
main文件:
s% A! `" X' U" |0 F1 r. s+ `interrupt void interrupt4(void) 7 f9 ^) h7 B# p$ t' J2 ^
{
. t0 r& B6 D+ e. _ Uint32 sample;2 r2 @ `1 D1 |( o a
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sample = input_sample(); // read L + R samples from ADC3 q3 ^* @! Q6 t1 V
output_sample(sample); // write L + R samples to DAC , d- _/ P* \4 q& _ E. Q
return;4 s( S1 ?4 ]% i# ]/ r* a
}
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int main( void )
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/* Initialize BSL */- [; f' y1 R3 i
EVMC6747_init( );. f+ x+ k. [8 ]* t4 [
/* Call evmc6747_intr function */
6 f% l; q" M+ n5 Q" ? aic3106_init( );( p# F7 i$ O' q
while(1);4 m( \0 I* x: h0 i% e
}; {: p# k' [ h) P f- R! u8 w
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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
5 ]' C6 i7 V) G" f i- J/* Initialize MCASP1 */
O m" G8 \" w0 \, K mcasp = &MCASP_MODULE_1; ^0 O# [9 U8 F: z3 B. ?/ u( v
mcasp->regs->GBLCTL = 0; // Reset+ I0 X& J) @2 d( W0 E6 d9 F
mcasp->regs->RGBLCTL = 0; // Reset RX4 u. Z- b) j* J/ W
mcasp->regs->XGBLCTL = 0; // Reset TX
: d" M$ _# O) I! t mcasp->regs->PWRDEMU = 1; // Free-running
) k" p; g5 B4 ^# {* ~! A# G E // configure McASP0 receive registers2 D9 d7 h; e3 g
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used# x( r/ [5 K; B* T! A
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus" H5 @2 t4 n* `/ p S* l
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
9 P- L' b0 J7 v3 |' `& ~ mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
- q8 n8 }1 y* q3 w mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side) s4 R+ M% [0 @9 ~" r6 ~( e# v
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
# \" g4 p( h6 W4 ~/ D mcasp->regs->RINTCTL = 0x00000000; // Not used1 s) f# r s r9 W6 u/ `* A/ S0 _ W
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
! k2 x4 \4 B3 H; H9 Y mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus. E" w! `! B, O
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word5 N0 o! _4 O' Y' @, a/ j6 I
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
& b. H0 e6 ^0 g# j) u mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK/ [: Q# r$ q0 x
mcasp->regs->XTDM = 0x00000003; // Slots 0,1, ?$ F/ e5 [4 g' e+ @, o! N
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
6 `8 q- S u* r+ }2 \5 d mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
$ [6 l* u: @# {0 W2 y; K mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT. l4 N) j+ Q: R! q2 }
mcasp->regs->PFUNC = 0; // All MCASPs7 D$ a# I8 k* Y2 Q; w! q: k
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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4 U' t, j. a2 M6 W mcasp->regs->DITCTL = 0x00000000; // Not used
% A a; k+ `0 \ mcasp->regs->DLBCTL = 0x00000000; // Not used
1 |) `! E) o0 p4 A: k# y) e mcasp->regs->AMUTE = 0x00000000; // Not used- j$ V) B0 Z& Z4 f
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/* Starting sections of the McASP*/
, H) S2 ?4 _& Z8 d. F; D, K mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
6 y$ [5 L. n- b while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); ' C$ X% `! K7 C9 G% v: L6 ]
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; / @) E1 y& K) `
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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) D% E1 }% P& ]* q8 f8 N mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 3 e3 @: @9 s+ u. Q! y, B- p/ ?2 {
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
* M. O8 N# `5 J, W mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
- @+ U' G7 A0 S while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );/ I* ?3 V7 ?6 }' g
: o3 b( e. K7 G5 ^ mcasp->regs->XSTAT = 0x0000ffff; 2 A3 w6 t8 o7 `% k
mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
7 U' F l; `" c9 t: U$ y while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
+ u' t% t; {) W0 |! f" d mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; v3 f) @2 ~' g3 n6 I& [5 Z
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );# V/ Y* d4 J `: ^0 P
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/* Write a 0, so that no underrun occurs after releasing the state machine */
. |; l& h8 `! K' R7 U# t mcasp->regs->XBUF5 = 0;# F" e' M! n1 @) s
mcasp->regs->RBUF0 = 0;/ b8 J: ], n" u8 e6 t8 \
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
; k: Z" y0 o# G) E2 U; u while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
6 E6 l+ q/ \9 a* V mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
+ l" p) X9 _1 N' Q1 D* B2 {4 Z while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; ; `# L( @; g+ C' [
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
! M% |; J# T$ C mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 8 s% Q+ `# B' O7 _, K. u- O! e0 Q
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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4 e2 {! \$ \& O" } CSR = 0x0000;
! X. V' L( {5 s9 Q1 u0 ], [ INTC_INTMUX1 = 0x3d;
/ p/ l2 q( m5 U! R6 y v ISTP = (unsigned int)vectors;, D- K) [/ T& c& N
ICR = 0xFFF0; 8 S( D7 a+ y0 e2 z! O
IER |= 0x12; & ~. A5 g) K7 [3 O
CSR |= 0x01; 5 b, n& R; T7 {
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还有就是两个输入输出函数:/ E+ }$ X& n+ K* I; N: A4 X" ?3 h
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data; 2 X, |) n+ s# \
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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. G9 T) J7 L% n) t, t p3 cInt32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
, u$ S$ O; Y: X/ m& ~) l, a return (AIC31_data.uint);3 ?, \4 @5 f6 U3 e2 q7 }& n: r
}
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