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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:
5 j3 Q- q9 U/ g7 s3 bmain文件:+ \6 f6 T/ C. \
interrupt void interrupt4(void) , G0 J. O9 s$ l& \& a
{$ }' c% L/ h4 {
Uint32 sample;9 l1 b" Z0 H+ [5 o" E
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sample = input_sample(); // read L + R samples from ADC
; q" a5 i$ V: m- A0 h output_sample(sample); // write L + R samples to DAC
' x% x9 c7 d+ R: @, L7 F+ Z2 B; W return;
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1 G# D* w u" S# F, r# A( Q: Xint main( void )
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/* Initialize BSL */
# s* Z# F. v! e EVMC6747_init( );
) ~- U$ ] R( f W% y& k/ ^ /* Call evmc6747_intr function */
& i6 Y2 N5 a" e! [. r9 R aic3106_init( );
7 k7 c1 r" s: \' b; e% U7 O L while(1);/ n. r; F# @2 i5 E# E
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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
& u" j$ Z# ?1 H) i p/* Initialize MCASP1 */
( R- g! w1 D6 o- c7 R mcasp = &MCASP_MODULE_1;7 Z" K- f4 E! V
mcasp->regs->GBLCTL = 0; // Reset
! G' L# J5 j y3 h) L$ P mcasp->regs->RGBLCTL = 0; // Reset RX
" M4 b5 S. l6 B* i0 I mcasp->regs->XGBLCTL = 0; // Reset TX
0 \& z/ u% t, ], h% r3 I: w, s3 K7 I mcasp->regs->PWRDEMU = 1; // Free-running
9 U4 z2 p& X1 n3 A) o // configure McASP0 receive registers( b5 P, s+ ^6 _, C5 u7 X
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
N0 i$ H. z3 R& c5 e mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
3 W, }" q) U0 c7 Z6 y$ s* f* L$ V" c mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word3 [; S$ K$ m' I+ }9 H' g' g
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)0 }+ l* g- [' }8 R0 d
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
1 |* r- [( U7 H% X6 j# L: _* I/ O mcasp->regs->RTDM = 0x00000003; // Slots 0,1
. x4 ~! o# W4 r1 L/ L# x1 f* t mcasp->regs->RINTCTL = 0x00000000; // Not used
1 C3 o0 `# A2 W6 M( ] S& D0 z mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256. Y2 G" X8 O+ I# [. |
: c; I& g! O( v4 Q0 ^ mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used9 i. h7 L7 Y7 R I; E
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
1 @5 c* n. _4 ] mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word. o. D5 j# u5 A5 ]1 k% g' U& a
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
& I: ~5 v: Q0 c* z. V mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK* @& I9 {% D- |4 }5 J/ X( q+ w
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
4 b9 ~+ u( C( c# U2 Y: } mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit! H4 d# D- h3 _; T+ [+ L$ c' i
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN8 c Q9 {. N& C( y& A# X# r
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT. l" N$ Y; g4 u; J1 g a
mcasp->regs->PFUNC = 0; // All MCASPs6 }6 m' h5 ?6 _$ C0 I- D. M1 p
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used
4 M p3 E( ]# D, i. L4 {1 Z mcasp->regs->DLBCTL = 0x00000000; // Not used0 _% n& R2 Y) t
mcasp->regs->AMUTE = 0x00000000; // Not used
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/* Starting sections of the McASP*/
( {4 ^# U" j1 J7 `; V mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 7 F- f5 r. L9 H3 z1 n
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
- \7 U5 G5 \; J: M0 g* l mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
+ \9 @, C. x, o3 q+ {2 ^* S while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );: {. R/ Z, K3 ^/ @! r
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 0 J: A: o' {1 {
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );! e! n. \" y2 ~+ p4 g; r/ T# x
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; , H6 j6 P: `' g" m1 l9 i
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );$ i& x# P% i1 d
# {/ E3 L7 u6 V( n- D' @2 f/ f: M mcasp->regs->XSTAT = 0x0000ffff;
+ s% [6 Z: e7 y/ g' z8 o* M- G mcasp->regs->RSTAT = 0x0000ffff;
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;0 `8 d' s" I. Q! j2 S5 Y
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
) W+ s6 r6 S9 E4 H: ~4 b% l% T8 n2 B mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
) P) b1 t; Q a" G+ e4 R while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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2 ~$ w& \2 A* w- q% F /* Write a 0, so that no underrun occurs after releasing the state machine */
- {; ^6 `0 M% R. s mcasp->regs->XBUF5 = 0;
9 }/ G) J2 k. J) G2 ` mcasp->regs->RBUF0 = 0;) s+ @; k+ Z# c- M) A( m' r& y; W
$ ~" D' t9 _# P# |% w! K- J. b: Z mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; . J; k9 S! C* S) x" X% h9 f1 o4 A
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
' [; D+ a* E& y8 m' I mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; ' A6 n6 l" T: x& p# ^% L
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 5 X* P, f4 E% W) y- Q5 X* n* \
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );# N' o4 q- r& m2 D+ D0 o
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
I* A% R4 Z2 E( X' B while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
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" a' D" R _+ Q5 q0 y! ~! N CSR = 0x0000;
# S4 ^, N2 T* p3 x; V* r6 }/ B INTC_INTMUX1 = 0x3d;+ N3 s8 V/ v \# O4 n5 k
ISTP = (unsigned int)vectors;" v) U7 O# T# K( f% u
ICR = 0xFFF0;
" ^; r* T* v! Z4 T0 c3 s IER |= 0x12;
' {2 f$ P8 N* d5 n CSR |= 0x01;
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2 _% l, T" d3 ^1 r还有就是两个输入输出函数:8 I. x% k; b- q* Q
void output_sample(Int32 out_data)
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AIC31_data.uint = out_data;
5 |' A0 \2 W0 m- ~/ J MCASP1_XBUF5_32BIT = AIC31_data.uint;
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& e4 C% w, Z0 h, F5 gInt32 input_sample(void)
; g$ I- I0 g" y5 t8 l{
& v9 @7 e3 E' j AIC31_data.uint = MCASP1_RBUF0_32BIT;
/ j' H+ R X/ `& ]- N return (AIC31_data.uint);' }, }0 v/ {$ P- {$ H* {
}; _+ o, C3 [( Z0 O1 T! r
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