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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:
6 Q* _6 a7 Y2 n7 ~3 w" k4 j6 _main文件: i: P) Y ?1 p
interrupt void interrupt4(void) # s, U8 | E% M7 I* X
{
2 q) q; k# S% [0 H6 L) O* U4 K Uint32 sample;, r. t* C2 S3 [& a& x( b
9 p L) m/ s( z0 [0 R
sample = input_sample(); // read L + R samples from ADC$ {# r8 x4 O2 R5 s7 U
output_sample(sample); // write L + R samples to DAC
6 O5 m z% x3 [( D* F return; f$ G. _/ S/ d' E, S
}
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' U/ x: l2 p$ F) S/ h1 q/ ~int main( void )
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2 M% A& K/ U8 x2 D2 T) w /* Initialize BSL */
# a9 M" h' t" ^; G" B9 x, ? EVMC6747_init( );
) }- A) ]0 l0 N) S /* Call evmc6747_intr function */
8 d, g1 R5 b+ V J" N8 M aic3106_init( );
4 _/ X$ m( ^' G% ^( O while(1);
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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
4 Q7 c" R* J4 I) X& j8 t( M, S/* Initialize MCASP1 */6 A/ Q. i8 K& N: ?
mcasp = &MCASP_MODULE_1;
8 r+ d5 x9 `9 _ mcasp->regs->GBLCTL = 0; // Reset. B& D4 ]; Z: C* l' C
mcasp->regs->RGBLCTL = 0; // Reset RX9 v/ ?9 ^. W2 ^9 e. M- E6 F
mcasp->regs->XGBLCTL = 0; // Reset TX
, l4 S3 \ M4 [4 P0 J Y) E mcasp->regs->PWRDEMU = 1; // Free-running/ C# v9 z% N2 ]# v+ d
// configure McASP0 receive registers
2 b W; S H9 Y& ?6 ~8 Y& R0 c; { mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
* {" g; @7 Y- g) @( W# p/ z mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
7 p) \/ o2 J# i o% _, r/ v7 n mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word" l$ F. ~! S' D' J( ]
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
; v# Q& D0 p: p$ _5 Y% C- U mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
5 n! S! d9 l- l: s' ?7 ]; q0 b mcasp->regs->RTDM = 0x00000003; // Slots 0,11 Q0 p" H; Z8 {& F6 o- X
mcasp->regs->RINTCTL = 0x00000000; // Not used' U9 z0 C& |' X# l: o! C( e
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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7 y* T: ?9 ^4 y$ U mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used: ^1 O0 m$ O8 S5 m- U% W1 v3 U( ~
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus( ~. p- J5 _+ h7 Z9 n) K6 ~
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
1 N+ @( `" l3 l5 v z mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16; L' o* `- v- h5 M% e. R( [
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
; ?$ d+ b# h$ \9 g mcasp->regs->XTDM = 0x00000003; // Slots 0,1
0 j& O3 R! e$ J% c, E0 Z mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
$ m! m! P4 x2 ~$ Q8 F# _- v mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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# j! h& O! y8 i mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN- c5 v0 Z- H. f, ?2 x4 `
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
2 a$ m- `6 j e mcasp->regs->PFUNC = 0; // All MCASPs
+ x8 |4 ?; s5 x- {, G9 } mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used9 _+ n( O' R0 v& e3 ^- F' K* [
mcasp->regs->DLBCTL = 0x00000000; // Not used
) f- }% ?0 @+ F" C( N* d: Y mcasp->regs->AMUTE = 0x00000000; // Not used
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7 j2 e- [) n E' x6 C/* Starting sections of the McASP*/
2 c' Y. `1 }, o" V; @ mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
- k4 k0 Z2 p0 O4 t5 f0 I while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 0 M9 o& x. b/ C: p( X9 c
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
9 @$ ~( ]( F/ Q* W. e while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; % d r5 b$ X G) z7 p4 C) @6 |
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );( a9 Q0 l2 S! _7 u
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
) r( @. q% u) T3 S7 C while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );* O' Y" U8 x9 N3 G4 K
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mcasp->regs->XSTAT = 0x0000ffff;
1 u8 n; \& f' R4 t, E mcasp->regs->RSTAT = 0x0000ffff; 2 D9 u9 ~5 `* M
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
; k- j5 U$ ?1 F% a, g while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
! j' P( L& e9 h& E mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
3 f0 N p0 i( c( C: G7 I% q( K while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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2 j" c [8 h1 o! g- r! a; @ /* Write a 0, so that no underrun occurs after releasing the state machine */
5 c- t4 p; K9 c mcasp->regs->XBUF5 = 0;
' B" ?" G. h" q# Z: | mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
! K% N# z3 _( U+ J' W$ O/ P) d while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );# ?! x, ~8 Q5 Y
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; % D, z( a* D0 z& y+ o \0 e
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );% a- {: M' w( p, o
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
7 g; F9 G5 c% h while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );" `. k: A( j# j) L
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; $ w9 W5 Y( K; p% s8 y
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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1 p; C- [2 t) Q9 d6 \8 x0 E; W3 w CSR = 0x0000;& M3 B1 U" V9 s$ O: J5 J( `
INTC_INTMUX1 = 0x3d;- a7 Q* g) G- W. ]6 `7 J
ISTP = (unsigned int)vectors;
, f2 J- k0 |" A( e1 y ICR = 0xFFF0; 9 z5 L7 {% z; t0 O. R5 m
IER |= 0x12; 0 Q7 Z1 f& Z D# S
CSR |= 0x01;
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2 Q! G3 ^% a9 @: H# T( ?2 I2 X还有就是两个输入输出函数:, _! _7 O$ o Z' V/ F" R8 |
void output_sample(Int32 out_data)+ f! \) X0 g9 `4 ~
{
+ Q& |* [+ T$ H" B AIC31_data.uint = out_data; ( R% }- w' {. v% P$ o- b
MCASP1_XBUF5_32BIT = AIC31_data.uint;6 ~: T( Z' ^4 b- D$ m! ]
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Int32 input_sample(void)
n6 I2 ]1 i* Y) U; `{
" s. |. A& j" K/ {* b AIC31_data.uint = MCASP1_RBUF0_32BIT;
- B* a8 }3 ~2 Q; o/ C* c return (AIC31_data.uint);
2 U9 Q' G6 J% }" C7 K) f}
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