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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:" i, j: }1 B- ?1 H; Y" Q- Y. P, ~6 S
main文件:
3 `+ Z# w0 y+ w# [6 E: D2 linterrupt void interrupt4(void)
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Uint32 sample;
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& g/ z* `, I8 y; J7 i6 T0 e6 z sample = input_sample(); // read L + R samples from ADC4 d+ b* S/ I! }" F/ l$ g! N
output_sample(sample); // write L + R samples to DAC
: \5 f* b7 f5 M return;
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int main( void )
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/* Initialize BSL */8 y7 s, c7 g, n' x( l
EVMC6747_init( );
& ]" \2 {8 ]' r8 R' r" f( ^ /* Call evmc6747_intr function */
8 y' l; K/ O: c+ N" A3 { aic3106_init( );9 k z- j; j7 Y% ~1 l
while(1);
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6 h$ z, V( _; ~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
3 h! T( ^( e+ s1 p7 ^/ `# ?/* Initialize MCASP1 */
# y; [3 b9 k- u1 s6 l% p0 r mcasp = &MCASP_MODULE_1;
: R7 k+ X+ N2 }- O mcasp->regs->GBLCTL = 0; // Reset" u8 @6 l; T; \, f( V& X( n
mcasp->regs->RGBLCTL = 0; // Reset RX
- S5 Q) S/ E/ H- Q mcasp->regs->XGBLCTL = 0; // Reset TX4 l7 [$ F0 _+ q( y; ~$ `
mcasp->regs->PWRDEMU = 1; // Free-running
- r0 x9 D: T6 b+ ^" J x$ i: A // configure McASP0 receive registers( O& {" s2 B/ B8 n
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used+ l- Z% }* _7 t& G# q
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus9 N1 M; |% _7 G- {5 [! M
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
9 ~( W" l6 C8 \6 q0 d. |5 | mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)) ?1 {; z0 r9 T6 Z) d
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
3 _' Z! z+ C4 [) O/ \ mcasp->regs->RTDM = 0x00000003; // Slots 0,1
4 Y5 G/ ^: W8 b4 D4 `/ n3 ^; l- K% N mcasp->regs->RINTCTL = 0x00000000; // Not used
, h) l; z( n9 m& j3 v4 J mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256. V& ]$ B% n; |) u; y; N8 h1 Q7 o
* l) v1 ~$ j7 O" f! m& } O& t mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used; k8 D/ s/ V, u& a) ]
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
( a+ T& m- _6 i% W9 H9 J& g2 l mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
) J- s+ v/ B6 x' d4 t' s* n8 o mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16; k1 v2 r& g4 N# A6 l- }
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
- m# c% j/ y$ d+ ^ mcasp->regs->XTDM = 0x00000003; // Slots 0,1
; |$ a; j) I7 o, i; @! {! @- H) u mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit8 ?& {- x( p" ]
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2564 b% C4 c" y+ p: Q1 z/ ?
. J: ~- b% r4 u6 y! O. R9 z mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN4 a# X/ h6 ]- f; f H8 Z% t ?
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT4 f' b1 e; F+ i' ~5 m$ O
mcasp->regs->PFUNC = 0; // All MCASPs0 A' s% k8 M. s' c- @
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used1 }2 [$ A, Z9 @; z8 g( i9 i) J
mcasp->regs->DLBCTL = 0x00000000; // Not used6 E3 N% T6 f/ s( N
mcasp->regs->AMUTE = 0x00000000; // Not used
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/* Starting sections of the McASP*/
2 W2 A% y- X- C+ q mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; , H P5 O/ H+ S: m. I
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
6 {& u$ [' `0 h) g5 N7 r mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
# Z' |3 X7 G4 i$ U% [ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
( Q) h% G+ W5 w- \# A5 W$ L while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
3 j. Y6 R, r& d7 }6 e mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; $ k+ Q9 P' j; z2 U+ L t9 w; H8 z
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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' B: R1 q5 T9 S4 Y- X mcasp->regs->XSTAT = 0x0000ffff;
, l" k! n& U6 v) ? mcasp->regs->RSTAT = 0x0000ffff; 9 W: T, G1 e$ G% q9 | M5 V$ k) R
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;, x! r' ~9 d; x4 q( N1 L& l
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );4 y; @8 M- L: D) Z+ S; `
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
0 m0 q' H3 R6 w4 A5 P while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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& X9 o$ R# r$ _. s /* Write a 0, so that no underrun occurs after releasing the state machine */
/ q. k- J( m- S3 \" H6 l0 @. ~. [ mcasp->regs->XBUF5 = 0;6 s2 D( r0 w+ I. [7 m, X
mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
: z6 Z. A9 y; S, d9 {# h while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );1 u! f% j# N7 ^; Q, B E: T8 |4 _
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
b4 f) _+ c& _; b/ j7 q' e while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 5 X" g; w7 y+ H$ y' Y! c" O3 M
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );1 h @" i$ D5 L
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
) S t5 T6 x) v- O# L8 Y while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000;! P5 J! d0 g, w; {- y4 D7 q$ ^$ Z
INTC_INTMUX1 = 0x3d;
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ICR = 0xFFF0;
- C. r0 |; O# P( p. b IER |= 0x12; - A" y! }2 \1 I" m+ H
CSR |= 0x01;
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4 o/ T+ E; U! W$ H# h! J还有就是两个输入输出函数:1 q4 T3 _1 Z; f' x) A6 f) u
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data; - [5 G* M) y8 W# y. Z' w
MCASP1_XBUF5_32BIT = AIC31_data.uint;+ k7 V$ ]- z, J; n! A8 b
}
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$ A) N/ i" j$ T: `$ M% zInt32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;5 N. R1 a- m& L' G( ~, _! D
return (AIC31_data.uint);' Y# D: ~6 `) h
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