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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:7 [ v! ^7 L: M
main文件:2 a' R& Q1 a2 R5 M Y! V
interrupt void interrupt4(void)
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Uint32 sample;
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, B2 d" P: l* I# @ sample = input_sample(); // read L + R samples from ADC
5 \ C- F. v7 j, m output_sample(sample); // write L + R samples to DAC ( [5 ^+ w) B& |' A+ X* I
return;
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& G. w8 d* G# i, V, `int main( void )7 p% z9 s* W: z# B; X
{
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/* Initialize BSL */- h! u1 i& F: y% @/ A+ Q- R( d. |
EVMC6747_init( );" b M: }: C2 m8 ^' g4 R
/* Call evmc6747_intr function */
" u8 j: B( o Z# ~/ C- ~; M* O. E0 w aic3106_init( );
7 m( C+ ] M2 C. k" |7 w |0 h while(1);& R6 a% W+ c; S' D+ G
}
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7 X- n+ G( r' S8 R- [2 L: Vaic3106_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 M0 D. @$ d$ b$ U( N! R
/* Initialize MCASP1 */
& {2 d( A0 Z! @/ g* L1 ]' X4 J mcasp = &MCASP_MODULE_1;# m) L( c8 d- S4 A C7 X
mcasp->regs->GBLCTL = 0; // Reset- E" }* D C- q. z
mcasp->regs->RGBLCTL = 0; // Reset RX2 H5 o: F6 z$ {- p
mcasp->regs->XGBLCTL = 0; // Reset TX
. b- m) j D6 W( z* A) z mcasp->regs->PWRDEMU = 1; // Free-running5 P0 U' e- ?7 d9 r6 m
// configure McASP0 receive registers3 W" v, r3 L1 i+ N. b$ G5 ^! o
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used# ^, E) d/ Y1 q& o% i
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus; R6 o! k' x% J3 Q4 Y
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
' `" J" [8 E, Z, M- O mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
6 Q5 ]7 d) E+ j0 z5 L, y+ n3 F mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)! Y$ X. O, x% W- A( }( Q
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
5 k j# s* t5 ~: ^: V mcasp->regs->RINTCTL = 0x00000000; // Not used& c! Q+ u( o7 _6 k! I- n) V
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2561 Y+ _+ d4 P# \2 {
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used, ^6 Y9 s" O5 c- p
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus( M! u' I3 |: X
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word1 o) ^, ~& I& {- \. ]9 M
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16; D. n" M& b% g1 W" E/ g6 l' i
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK t# i3 d% s; }2 e. A
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
/ u; e. ?: A: `7 L# s- { mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit& @$ j2 _ D2 L( Y* D2 Q0 n
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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0 B! d4 r8 S9 D" J0 f: u3 F2 g mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
. w# z' u% |- Y' i: Z s1 p+ y, t% o* g P mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
+ {$ W: L( Q$ A mcasp->regs->PFUNC = 0; // All MCASPs
6 d/ n, R4 m! t4 \% Z! R7 _ mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used |6 F2 w# N6 J0 b4 R; y& I/ W5 J
mcasp->regs->DLBCTL = 0x00000000; // Not used
! N3 V% I T, T/ n( Z |2 s2 G mcasp->regs->AMUTE = 0x00000000; // Not used
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- a7 u, i4 l% C4 O% C! X9 i1 n" m. D& b/* Starting sections of the McASP*/
, x% m& b, i1 i. _ mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
n6 C" k3 s- K/ a8 Q6 _7 P2 V while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
+ F$ K1 I0 D4 w4 T! l mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; - _0 Z/ z0 w5 o3 q+ ^7 L7 u5 v' g
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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, |8 j; P3 D. S, x mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; $ [/ x2 F ~4 F4 R8 d
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON ); _4 r C5 f* \
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
) A0 T! I" d( a5 Q0 _1 N while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );1 E* c9 S* J* ]8 E. s0 B2 a3 I
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mcasp->regs->XSTAT = 0x0000ffff; 9 Y" A2 i: U2 F0 g6 O- W2 J# d
mcasp->regs->RSTAT = 0x0000ffff; 5 V5 I% @9 k' M$ Y3 W% w
5 |* [/ c! n1 r2 x- `* U) D$ N mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
F& ^; J3 {' }2 B% D" @ while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );: d1 w8 U) J# ]" E e0 q6 _
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; 4 A2 A5 E6 S5 p# T7 g
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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* e+ T3 P1 T3 o3 u3 a% ]# T( Y /* Write a 0, so that no underrun occurs after releasing the state machine */! ]; R/ E/ O, L f3 G& O5 u# ?2 T
mcasp->regs->XBUF5 = 0;$ f! z2 B# V8 h% Y# D
mcasp->regs->RBUF0 = 0;# o" S; _" _' ^1 B" B
3 B, r q9 ]. O8 H9 F# U0 {% u2 P mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
) Q4 @1 ?8 [* s$ d+ p+ w. l- P while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );7 I3 W7 j4 X7 F# k2 |
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; , T2 _' M: i2 `* j
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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i) p9 O+ @2 ` mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
; I1 I0 ]- O2 L. W7 C: z" F while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );/ X9 q' _1 D7 {3 _2 L0 i
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
6 k8 z W/ s2 c5 C while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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CSR = 0x0000; ]- C x" k% G" [* o x
INTC_INTMUX1 = 0x3d;2 q4 h: d8 ?7 f0 Z% n e* O$ H6 [
ISTP = (unsigned int)vectors;
! f2 Q' D& Y `( W ICR = 0xFFF0; ; M. |7 ^' V7 a5 U& g; R4 F; Q
IER |= 0x12; ; Y' o8 f" U5 U$ O) r
CSR |= 0x01;
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还有就是两个输入输出函数:2 n9 \9 u4 ^& ~- E4 u' }9 q- D
void output_sample(Int32 out_data)9 R* {2 ^( a! F2 y' h
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AIC31_data.uint = out_data; 1 w3 D5 q7 m8 b( g( n
MCASP1_XBUF5_32BIT = AIC31_data.uint;, G) r/ ~- F5 e
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! ~1 O+ a# s# g: NInt32 input_sample(void)" q1 i/ ?4 n: e% U
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AIC31_data.uint = MCASP1_RBUF0_32BIT;0 E' u) h; q3 M( s
return (AIC31_data.uint);
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