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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 `2 L; D7 ~- k- @9 a+ `
main文件:
, ^0 M( Z# m0 sinterrupt void interrupt4(void)
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, O7 i9 Z7 e$ O1 }2 O$ C3 E5 [ Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC
7 o/ g2 i) Q O' l output_sample(sample); // write L + R samples to DAC 5 w" n+ j1 x. I
return;
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4 p/ l+ K$ K* D5 Vint main( void )* C, H7 g6 D7 ` h3 k5 G! \3 k
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/* Initialize BSL */
) ?* y9 A& X3 i1 p EVMC6747_init( );' \0 x: |1 k. G7 W! z# k, a5 g
/* Call evmc6747_intr function */
$ b4 B: E. q% s0 Q3 ^ aic3106_init( );
+ B$ w" p+ R/ j. S+ ] while(1);+ y% N6 ]4 M3 `$ a/ y
}
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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 ]- B* b8 g! @! l8 y1 t1 E
/* Initialize MCASP1 */
" H9 T* o& Q/ a* ` mcasp = &MCASP_MODULE_1;
( \7 p/ {9 z b$ i7 K- N- Z mcasp->regs->GBLCTL = 0; // Reset
% P. ~3 K/ d) _5 r mcasp->regs->RGBLCTL = 0; // Reset RX8 b+ R6 [8 \* |. v: s
mcasp->regs->XGBLCTL = 0; // Reset TX& I7 }# L% _) k; t( |
mcasp->regs->PWRDEMU = 1; // Free-running
( C6 V6 p. |( E0 j( d' `2 B // configure McASP0 receive registers
. `% ^6 h' Q8 L& V* [) o mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used0 q8 |% ]( `0 @+ |
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
( Z' o; O+ Q! y) N/ Z: \ mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
% I5 W7 }( S/ ~ mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)# j* v# W) f' ~1 x0 h
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)# T4 U s5 \- j: U7 j5 | X
mcasp->regs->RTDM = 0x00000003; // Slots 0,1# {. E# n# U6 e5 F
mcasp->regs->RINTCTL = 0x00000000; // Not used
- K& I s4 H1 x/ m5 g6 R mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256 q4 ^8 B! P g) @ F$ N# r" h
6 @: w: f3 B2 ^( S* m2 P" g- H, s mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used7 z7 B" y5 I+ N. p- f5 L4 I
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus7 l6 \ _ T7 g
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word: j0 ?1 }9 [/ u
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16# `1 ]0 N1 r- C' W; T/ C# V
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
+ a) Y/ o& ~4 {4 G5 v* v mcasp->regs->XTDM = 0x00000003; // Slots 0,1
: p6 i$ y/ U: R9 N mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
; h/ a8 Z' d' g* y mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256( D/ ]+ c9 F' L. Z3 |: a! k. d ?) u1 b
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
+ a! c& z& g& ]$ o8 h( G( @5 p6 c mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT6 z+ g9 S0 K* f/ {1 n% M! c
mcasp->regs->PFUNC = 0; // All MCASPs5 N! c4 S$ ?+ T6 C$ n( n' P
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used
, P/ c# ?# m9 Y% k c5 l2 k mcasp->regs->DLBCTL = 0x00000000; // Not used
- y$ c9 k9 E9 e0 u' W! B. b( J mcasp->regs->AMUTE = 0x00000000; // Not used
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9 G m. e. J1 P- z/* Starting sections of the McASP*/8 e, [ Q; _1 R* e- F8 _5 \1 Z- ?
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; O [7 h/ j$ V2 q$ `
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); 8 v7 f4 ]/ v7 p% F
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
9 A9 H. a, W: W while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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7 Z; m* E! B& L$ q: J5 Y mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; ! E: |% @( r# L( k
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );6 b+ \) c% w& o; j
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
. r0 t3 Z4 {' e5 l/ n( Q while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );: J; I' I+ p! L7 F
; ~ w) R% z0 L: w+ G" p& {( k mcasp->regs->XSTAT = 0x0000ffff; . _& ?1 [# v- |
mcasp->regs->RSTAT = 0x0000ffff; ; t/ r0 i0 x5 }
, S6 w0 e( I" {* u; B mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
# a, V( C: W% ]' e' e: q: e while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
- x6 {$ O6 [; Q+ g6 N- m mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; , n% | _4 ^% L, b5 y9 X" }
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );7 f$ D. o/ e0 U+ c
) ?/ d3 W) r9 Y! A; Z: h /* Write a 0, so that no underrun occurs after releasing the state machine */
+ r" B) F3 U. n! v* {1 t mcasp->regs->XBUF5 = 0;
! P; @* [ C1 a$ p) L$ I! N4 N+ Q mcasp->regs->RBUF0 = 0;
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9 p G# N1 ^9 b/ Q. _ mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
8 E& F! G; s1 g2 { while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
# w( \: l) Y: ^% [; I mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; 9 N; T" S' j% J
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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: }: @+ p3 y% T" A! ^ q) V2 {1 K mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
! S9 s# [+ Z5 G while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
$ i; _: `$ V+ \ |# z5 c9 E1 } mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
6 ^& B T' d5 C. @+ f while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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$ C) C$ ]3 K$ u: J2 @ CSR = 0x0000;
/ Q: @' y8 f2 j7 R INTC_INTMUX1 = 0x3d;! N1 L/ Z# C2 f$ |
ISTP = (unsigned int)vectors;+ d. a; V5 b4 h, N
ICR = 0xFFF0; 0 f+ S! x, m0 u9 u2 q
IER |= 0x12; $ g4 W9 S1 T. c+ Y) u7 ~' q0 z4 m
CSR |= 0x01;
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还有就是两个输入输出函数:5 b1 t$ I8 Z/ N" k- M% z. e$ I: I
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
4 G0 Y/ ?3 P& j* P MCASP1_XBUF5_32BIT = AIC31_data.uint;
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/ L/ v! M ?5 E: U! b8 AInt32 input_sample(void)4 p" N* l% b0 U0 h4 ^3 F4 J
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
! }+ H( X$ L% K7 h return (AIC31_data.uint);& ?! h' H+ \7 k0 s6 F. K& y' }, B
}
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