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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:! L2 n* ~8 o4 g
main文件:0 O2 X9 D$ [. y+ b3 Y u
interrupt void interrupt4(void)
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Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC6 S" `1 f P @8 g
output_sample(sample); // write L + R samples to DAC
. a9 I+ V& S9 r) s; ] return;" M0 D! n1 ^4 Q$ L# [9 R* s
}
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' z& p+ I/ @6 c; S9 Q' l5 G5 kint main( void )
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/* Initialize BSL */
# f+ F* N* t; r; F1 X EVMC6747_init( );) k* _, S- I4 m S' m
/* Call evmc6747_intr function */
0 b+ s' u5 g. f: \" b aic3106_init( );
% F6 S! |( F+ A; Z! W k G) j while(1);- y/ K$ X) U" D3 T
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' I7 B( `- e2 Paic3106_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
8 h& L# J/ h2 @0 g" D/* Initialize MCASP1 */( T9 C5 S3 H* _
mcasp = &MCASP_MODULE_1;
+ b. y# B" h7 D% i+ j' n mcasp->regs->GBLCTL = 0; // Reset
5 n8 J l& I" s1 v mcasp->regs->RGBLCTL = 0; // Reset RX4 P4 e& Y- b* M1 \( c, r$ s
mcasp->regs->XGBLCTL = 0; // Reset TX
3 z6 j9 N* n$ G3 A' K7 h2 a mcasp->regs->PWRDEMU = 1; // Free-running8 c1 t x6 \8 r r, R
// configure McASP0 receive registers
9 Y! u1 c. w9 m6 K: ] mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
. a, V" B4 v3 J3 `! I1 m mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
/ e G, h& ]& \ mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word s+ l9 {. ?5 d
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)- f l! m4 d# j' ]! N, e- g7 \
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
1 ^+ H6 ]/ A) ]) w: ]5 m: D mcasp->regs->RTDM = 0x00000003; // Slots 0,1
1 R; Z B, E8 l0 R& i3 I mcasp->regs->RINTCTL = 0x00000000; // Not used
! S% a# [6 h5 h$ o( ~ mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2564 {& |0 L6 b" J; i$ K
- i: y$ ^& X' s mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used( x2 }2 B x+ g2 u5 e$ Q
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus/ q; e. F$ ~$ ?. C- z5 f" [
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
6 U& H9 w! \# |$ L9 |% y mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16; g7 o1 N! Y- U6 [! k; X) g% n
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK% ~( @. H! Q* O
mcasp->regs->XTDM = 0x00000003; // Slots 0,1; e1 Y4 O. A3 @! Y+ ]) s
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit0 g7 m$ {2 {" s w6 l$ U( N$ L
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
! B3 H; ^. ]% K& v5 J. _6 P+ Z mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT( M4 t1 R5 g9 T: D
mcasp->regs->PFUNC = 0; // All MCASPs
& U8 ]" `7 ^( H7 _ mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX16 C4 U9 S6 @! O" u) O0 r) d
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mcasp->regs->DITCTL = 0x00000000; // Not used
/ U2 g! g; L0 Z5 q- ~2 \ J mcasp->regs->DLBCTL = 0x00000000; // Not used
+ |% a6 `4 v" e8 m0 {/ y: n; _ mcasp->regs->AMUTE = 0x00000000; // Not used
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/* Starting sections of the McASP*/4 V4 O4 H1 O9 I( {- s6 b
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 1 x7 `( T& r6 y
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
5 Z6 z! y7 o6 w" z: ]. [ mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
9 e( x0 Q2 y- w) E5 Z; h2 W0 ] while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );4 G% B5 y9 ?8 f# @6 j6 ?( h8 D
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; - H+ q$ v' f* Q/ |& C
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );) {" W) d% |) E( ?# H9 v5 A
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
# D$ o) a3 w% i) [2 ~1 ? while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );2 x; _0 ^* _5 P5 e0 x+ Z; D, r
. [3 j) f4 I6 b& }# l5 c mcasp->regs->XSTAT = 0x0000ffff;
! v& Q2 b- r6 Z( B8 F1 T mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;/ [! }- P5 N# c0 V2 _! O
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
: U, _5 p1 g$ R0 s/ | mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; h, I6 Y, t4 A3 t' h
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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: V! w6 Z& {8 h0 n1 U0 {% x9 N& ^ /* Write a 0, so that no underrun occurs after releasing the state machine */* U1 A! e- k5 Y
mcasp->regs->XBUF5 = 0;; O& E# x* n; V% y
mcasp->regs->RBUF0 = 0;6 @; k( a, K8 j x# @8 D
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
1 \ n0 M* `9 P1 @% O" e' u while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
) ?/ W1 \9 k# ]4 c6 T4 R mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; & Z1 Q( p' h6 o& j+ o. z
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );1 q+ G: ~8 Z, [% }4 G) r
& |1 E5 y7 \/ _+ Q1 N N- | mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; : M. M, Z' m: O8 D5 p3 R5 V
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
; h2 A0 ?. U: k5 L% v% ] mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
0 ]3 H, O( o5 q/ A& _% |/ `) `0 b' D while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );- e, V$ K: ^6 K; p) N
1 `) ~' b. t |1 ]$ V. s CSR = 0x0000;/ R* |" z1 h+ h R
INTC_INTMUX1 = 0x3d;8 S- r, \6 N1 P( ^
ISTP = (unsigned int)vectors;
) u/ U ] ]. r, h ICR = 0xFFF0;
/ D z" j% P+ a1 a4 ^ IER |= 0x12;
! D6 P K$ I( W CSR |= 0x01;
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7 G5 ^: f) ?2 l, Q: i" {' f- w还有就是两个输入输出函数:( {5 V5 e8 A8 ~6 z' _: Z
void output_sample(Int32 out_data)4 E5 B! l6 F5 {6 B# c+ X, y% A
{
3 k I, `: p. G4 u, M' E AIC31_data.uint = out_data;
+ k1 W% d1 b0 O) s% ] MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)$ c, y- Z7 I9 f# v' M R; [( Y
{
) y4 |' j( J7 @5 H) m AIC31_data.uint = MCASP1_RBUF0_32BIT;8 m) x6 x# [" z' C0 y p
return (AIC31_data.uint);5 O. ^7 j/ ?/ U6 ^
}
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