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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:
& k0 G8 d+ T2 K& imain文件:( ^9 ^# m4 L4 h0 H8 ?9 [
interrupt void interrupt4(void)
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% ]. R0 U2 F0 P' }& K0 J Uint32 sample;
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sample = input_sample(); // read L + R samples from ADC
/ q/ A) B4 U- Z3 L( e output_sample(sample); // write L + R samples to DAC 0 E( B, |; Z7 k$ O9 S
return;
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int main( void ); P1 C( C$ _& ~2 b: X% e( G
{
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+ [0 U& |: _4 P' S/ \1 p /* Initialize BSL */
' W! `/ t: K& o EVMC6747_init( );$ ]9 C6 f4 X4 Q" y! W+ s
/* Call evmc6747_intr function */
; @1 ^$ }' z0 [: C aic3106_init( );) C* ]$ z, h, i2 `+ c
while(1);
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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
! t6 m; L9 ?& D8 T/* Initialize MCASP1 */9 h8 _* @- `# W5 b* {
mcasp = &MCASP_MODULE_1;
. ]* a% ^) R( P7 t4 s mcasp->regs->GBLCTL = 0; // Reset# @4 O3 J _- z5 k" D
mcasp->regs->RGBLCTL = 0; // Reset RX
6 e9 M+ v D/ h( X# J" u! S9 y mcasp->regs->XGBLCTL = 0; // Reset TX+ [" \* F0 h# H# I3 x- @2 l
mcasp->regs->PWRDEMU = 1; // Free-running: t( V# D' ?! ^, t/ { v) X: y
// configure McASP0 receive registers
* l1 J" Y+ S: C! N! s$ f) R' H mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
# v* g C; {* Q8 l' R# `+ j" T mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
R) v7 r* D7 j: H/ I mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word( t8 w- w$ _' s! P+ m6 c9 L
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)/ L; ~; L1 Y. _. |% [( c) O
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
4 ^3 z) f, D! ^ mcasp->regs->RTDM = 0x00000003; // Slots 0,1
1 a. l+ ]; I' q& B. u mcasp->regs->RINTCTL = 0x00000000; // Not used
! g& i' \. t6 w4 j, O7 Q7 z mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2568 o$ s# n: a% W$ x. M- S! l5 Z
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used5 m9 | p' T% T/ E, o
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
9 Q7 m ]8 N& s! i; U7 x" c j mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
) z2 L: N6 ?! L, o5 L mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
" l1 y% c. r9 M8 n( X) ?* e5 }7 `0 X mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
0 P6 @' F/ S: K- v0 z mcasp->regs->XTDM = 0x00000003; // Slots 0,1 T" \+ l8 {2 Q- y7 x! E
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
) n% o$ f P& s6 c mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256* q2 k$ |/ z! ?
" Z: l" ?+ v) J& z; ] mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
* h% u5 M7 w! n# A! x; q mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
7 n2 t; ^% t# |/ } ^ mcasp->regs->PFUNC = 0; // All MCASPs
! n$ |4 {5 w' e& G6 v mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used
, H2 W$ n$ K: Q n& p mcasp->regs->DLBCTL = 0x00000000; // Not used
( ? @. d/ q' g" u( v- i1 {6 P mcasp->regs->AMUTE = 0x00000000; // Not used/ r Y7 K+ q+ ?7 g. M1 D: ]/ A- n
4 T2 C! c. V F4 A2 ^* a; b/* Starting sections of the McASP*/* C- e% M s2 y8 d2 W. e
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 4 @& P/ P0 g M2 C5 a' T0 C; t% f; g
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
9 v8 s8 _+ @7 R E0 h1 ^$ R mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
* `8 Z, r" D1 i9 B: ` while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );6 k" R- e& a( `! @: `* @8 N! l
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 9 H# k4 T& K# t% N- `5 d, G9 r& R ?
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );& c) [0 l- A' [3 Y9 m! p
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
) |$ a! v9 K: i- t% M' N while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; - p. @, U+ W% t, m
mcasp->regs->RSTAT = 0x0000ffff;
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8 f9 O% _+ P2 ]# n* F3 Y mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;' O8 U) J$ Y4 x$ N' \7 z
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
9 T3 I5 j, ^. F( _ mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; " P# k% w/ H; {, r; C
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );9 `; p9 h: M; h, G& T3 s0 P& u
# l- d8 X3 b; q% |8 ~; o /* Write a 0, so that no underrun occurs after releasing the state machine */
- ], h, Q' v0 _ O2 t ?9 w mcasp->regs->XBUF5 = 0;
4 _: K% w- f6 R mcasp->regs->RBUF0 = 0;
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mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
0 \6 f( Z# H3 s while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );; f; w/ w4 m6 a! \% ^! J& n9 y/ J
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
2 G' J; J2 L9 i" I2 k. |6 ] while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );. D; E. P/ Z n" T
5 ^9 J# x' i3 C4 x2 M/ b2 s mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 2 y; K1 y' J4 A1 l. e
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );3 {7 d; }- ^% l5 r$ Q
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 6 m* T& N/ Z3 b9 i4 m$ g1 M8 Q
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );/ M3 D8 v4 z0 ^
/ W$ f' {; L5 L$ R4 q; X CSR = 0x0000;
3 S! {5 y% x0 c$ q0 m! q INTC_INTMUX1 = 0x3d;( \0 r2 B. P; t: r
ISTP = (unsigned int)vectors;
" `; ]/ Z& c6 A8 }3 r- Q- ?# D% t ICR = 0xFFF0; . @$ r* {5 I% H0 \
IER |= 0x12;
1 d- d$ g) \( m3 Q CSR |= 0x01; 0 S P, f- X( R# n: a& U
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! @& p o6 _' w) |+ P O/ {# g( x还有就是两个输入输出函数:
! v0 Q2 H/ Y$ |) C5 X& l% ivoid output_sample(Int32 out_data)
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& _4 ]$ ^. K3 S3 s$ g: {; r AIC31_data.uint = out_data;
; W5 K2 s5 }: |2 @! A3 i4 D MCASP1_XBUF5_32BIT = AIC31_data.uint;. ?2 g) o! y: q0 z0 E4 G$ p( w
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% ^' R" A7 b2 h) OInt32 input_sample(void)8 E" G, G; D7 a T4 j2 d7 _
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AIC31_data.uint = MCASP1_RBUF0_32BIT;9 t0 H1 z. \! r X8 p9 L+ Z3 A
return (AIC31_data.uint);
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