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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:
% }) `% h; A* E5 }$ [main文件:
0 I1 h5 b: O' j: Y! {interrupt void interrupt4(void) : N0 \/ P3 {6 L; {9 q6 ~
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Uint32 sample;" U3 d# K5 v& {5 K
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sample = input_sample(); // read L + R samples from ADC3 ^6 Q/ a0 f' ^; F5 W
output_sample(sample); // write L + R samples to DAC
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int main( void ) d5 U5 `; w; @4 G
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, I) J) y) Q- W3 c( V) h/ ~ /* Initialize BSL */9 M$ P- H2 _* x; `. y6 {
EVMC6747_init( );
5 ]) C5 X; ]4 I8 }3 l. w /* Call evmc6747_intr function */
: W! S- Q( d- o) A0 m8 ? aic3106_init( );
( `; K4 I ~- M2 q5 \8 P while(1); W/ `# [9 D3 P: {9 _' ^
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, R- \, H) D# j6 {/ J$ Qaic3106_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
. z1 [9 T5 j+ }1 g/* Initialize MCASP1 */
: w: u/ y) y" e3 {, K( k mcasp = &MCASP_MODULE_1;
0 U" z0 t: m# u; l$ o* d mcasp->regs->GBLCTL = 0; // Reset7 O! x2 R( w, Z# @5 v |+ Y0 P
mcasp->regs->RGBLCTL = 0; // Reset RX2 e, i" g. W- r- ~; u8 I
mcasp->regs->XGBLCTL = 0; // Reset TX k+ ~# M! _ c# D
mcasp->regs->PWRDEMU = 1; // Free-running
% b1 Z+ X1 P4 Q, w, A2 s |+ ? // configure McASP0 receive registers6 E2 y: F6 T% b8 A" v% o. Q
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
2 @# O" _8 K, O" b5 i$ ~ mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
# y$ H2 D( N( x* b8 v mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word; P8 p4 G4 H0 U8 s# A6 T O
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
. E9 r$ D5 v2 C- \9 N( M mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
+ A; v ~& Q! V( E+ }2 p/ _0 r+ c mcasp->regs->RTDM = 0x00000003; // Slots 0,13 J+ B5 v3 B" f. G
mcasp->regs->RINTCTL = 0x00000000; // Not used4 ^$ ^2 ^+ b# `, o' ?8 J) q3 g% p
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256' V4 J1 |5 }: E1 j$ X
3 n' W# h( H1 ~9 V) O( [) \4 _ mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used) p) N/ g' X: c5 t! e% f
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus% E( V2 h9 n: m8 b: k, w
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
6 p: C0 F; t5 e- T mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
6 g: o9 S' c0 a$ t; l9 b( b- K+ {$ z mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK$ P% h. J C9 q9 ^' l
mcasp->regs->XTDM = 0x00000003; // Slots 0,11 W* Q$ d2 r* V; s0 r
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit& E( t e; \, h& z8 b! t% W. O' ^
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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B+ n+ R4 Z3 D$ X- `0 p( X3 Z mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
) p; @4 C& h1 f mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT; W( U& Z1 c9 ~/ t. Y5 y! G: O
mcasp->regs->PFUNC = 0; // All MCASPs
8 S! M1 \ d: q( {6 J% v mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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# \9 u6 a2 f# T6 z mcasp->regs->DITCTL = 0x00000000; // Not used
& h2 B/ E& H6 S: D2 c1 ` mcasp->regs->DLBCTL = 0x00000000; // Not used
3 }2 T9 Y+ S/ z# c; X% | mcasp->regs->AMUTE = 0x00000000; // Not used
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$ w: W8 u7 c7 ~* y+ d9 @/* Starting sections of the McASP*/
' q! j& {/ N8 t4 [ mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
( c; Q! c+ c0 w! e4 g# t& D/ E while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); & g% ^6 b+ G4 [- H
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
5 u" K { F2 D while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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- x5 M% X% |. O3 M mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
, }1 A6 u+ L( q- b8 f while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
! `8 E1 t0 v j. Z" d5 M/ q( q7 F# m) w4 V mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
+ d6 e8 z( r1 _0 p2 U1 k- w/ f while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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% j$ D R* h* q* R) h; Q8 Y. O mcasp->regs->XSTAT = 0x0000ffff; ' C' k( H* s+ K( [0 B' Q
mcasp->regs->RSTAT = 0x0000ffff; ( ~) H0 \# @( {) M. {0 T
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;$ ~2 w- t1 d' e& Q- ?/ R
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
, Z8 i5 C3 ~- O) t mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
3 q; I6 n- T! S) n while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );- C" q. H) S f6 j2 i8 g
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/* Write a 0, so that no underrun occurs after releasing the state machine */
/ B# R7 q9 R5 V3 O mcasp->regs->XBUF5 = 0;
& q6 H g X" U- d! l mcasp->regs->RBUF0 = 0;0 [1 Y& k! R5 P9 q3 ?. K5 N
0 {5 H, L" T5 v: t" O7 y' }1 U mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 6 v C5 B3 I8 F7 }. O
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
3 A5 T0 V$ e; `& R3 T" w0 B! Y mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; $ [) U3 S' h0 G% ?% N4 y
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );9 F; b. ?1 [$ \8 J# b* _$ w, W. _
U; X& ^" d% | mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
- Q0 p& c% _4 S8 h0 o while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );6 W! [' o; o: d5 Y: H
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
( k/ W. i, c0 @0 V- l2 r while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );2 r/ @; W9 h* h) `
$ x. I+ l( E8 h i/ v CSR = 0x0000;
. Q* X$ v* W6 `* i$ e! B8 p INTC_INTMUX1 = 0x3d;
/ [% J8 y8 m/ V9 Z9 i! s ISTP = (unsigned int)vectors;# C, W- l6 G( x" w# ]5 W2 p* q: m
ICR = 0xFFF0;
6 U& }0 U& n, @2 @& f1 a O( X6 u: ^ IER |= 0x12; ) E: L3 A" l0 i( m& u2 h
CSR |= 0x01;
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0 k0 o' `) J# u( e' _. |/ f还有就是两个输入输出函数:' C! n6 i( |+ n4 r1 ?
void output_sample(Int32 out_data)& b8 r6 \* f& g* G& `
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AIC31_data.uint = out_data;
2 d7 C4 H1 G! Z MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;6 F0 l w2 h4 [6 C" R
return (AIC31_data.uint);# s, K' [! n0 j
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