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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 ]. @6 o9 R( m3 x# M+ ] v: l2 G
main文件:
5 M6 Z1 }, @* O2 a+ M& h( Iinterrupt void interrupt4(void) 8 n1 ^/ R0 x9 g$ j
{4 Z( }) }0 h+ b5 {' x! {
Uint32 sample;: I# T" w! q# R% P& k$ t
% q# G8 u3 S- ^5 E$ O; {
sample = input_sample(); // read L + R samples from ADC7 F9 Z* N; _) `. s, b
output_sample(sample); // write L + R samples to DAC
4 \) k7 |' }& P6 M, Z# {' [ return;
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int main( void )8 N, t+ a! A/ Y0 R8 | l+ s2 t
{
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/* Initialize BSL */% U2 }) U7 y7 h- c7 f9 p
EVMC6747_init( );
% i% l4 e3 p4 U8 S& M3 u* W /* Call evmc6747_intr function */
0 N: P* N3 I2 F" `5 u. Z! ]- F- s& S aic3106_init( );2 T$ R+ I* _( a
while(1);
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5 F( l) P* ~& ?0 D+ X- X5 laic3106_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) X, N7 u) B3 c) I; e
/* Initialize MCASP1 */# Q, o/ x( U- r
mcasp = &MCASP_MODULE_1;3 _8 ~2 @( {' X3 M5 _0 h
mcasp->regs->GBLCTL = 0; // Reset
2 Q' e; J6 A5 T- _9 b" ], q mcasp->regs->RGBLCTL = 0; // Reset RX
% a0 A6 [/ e8 S mcasp->regs->XGBLCTL = 0; // Reset TX6 f! o2 a3 U" ~. \* u
mcasp->regs->PWRDEMU = 1; // Free-running
; Q! {. v6 D' q& m1 S8 r, l // configure McASP0 receive registers
) e& k5 F; u9 O' \1 r. m6 S mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used, o: d3 }$ k: ^6 x+ @* H
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus) V) ~0 N6 n8 S, a" m# M
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word5 T$ _! L" x6 P$ I6 n
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)$ f: T. I; g7 M. z
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)& ? T! c0 O+ G3 g% i5 V9 g) a
mcasp->regs->RTDM = 0x00000003; // Slots 0,1- R- K0 M+ S' M3 ^
mcasp->regs->RINTCTL = 0x00000000; // Not used6 ~: K7 r9 W e5 u$ f P
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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- Z, e$ E( ~% E# b! i3 `. O9 g mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used' Q) {1 [, Q5 e* b1 o3 Y# W, U
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
0 o1 c* x7 @* V3 z mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word; R% C* P% ?! V" T2 K8 R ?
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
1 a+ e/ N3 s, U: w. x: Z' z3 P6 S mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
3 s' z2 g* z, h/ g mcasp->regs->XTDM = 0x00000003; // Slots 0,1
4 `% ]: o% b7 o1 | mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit m+ _5 S) h5 j. e/ w
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
/ B# m, d" s5 T' Q, E- Y mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT7 b+ ?9 h% E1 F J
mcasp->regs->PFUNC = 0; // All MCASPs3 v3 R' w' Y: H4 e; {) g
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1+ h1 n8 a* w. j
/ c- q) G' G7 b& Y& c: m% i mcasp->regs->DITCTL = 0x00000000; // Not used
% H. P$ v! P, x$ ?# K( P% ?% c mcasp->regs->DLBCTL = 0x00000000; // Not used
" Y. X9 G* r) F+ y; p8 E mcasp->regs->AMUTE = 0x00000000; // Not used
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8 `4 f+ S6 |1 u) c2 G) J: f/* Starting sections of the McASP*/+ A9 _0 r2 b# _4 i3 [- w
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
+ _1 k& s% M, D0 _. A while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
g: m3 v" r, i/ w2 u% Y mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 8 ?' J, d9 U5 i( Z; I
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );3 i! a1 J! @* Z& |6 r5 T
+ X% S) B! V* l8 E mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 4 m6 @* U# w) D
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
/ Z3 g! ^+ G, F! T. d mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; / Y$ N! g5 E0 k# B+ S* I
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; 5 l9 k! Y' C+ C" q# T, k
mcasp->regs->RSTAT = 0x0000ffff; / r% E# T. f4 t* J2 r
$ d- X) | [! ^0 Q mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;, n) s7 _. @" T6 c, A8 e5 E: |
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );1 J1 T% ?) j0 n; e; `2 J
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; ) ] e/ w6 }: X' o4 R/ u- Y: u
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
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/* Write a 0, so that no underrun occurs after releasing the state machine */
8 [6 \. [" d9 C, U+ _0 ~ mcasp->regs->XBUF5 = 0;9 t# `8 C4 h! e2 V
mcasp->regs->RBUF0 = 0;
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" Z/ j4 ?: T# A/ ? mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 5 I0 f# b4 P ?9 K2 B6 R$ `2 t" u
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
( h. u- C$ w* v8 \ mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
D- G3 n1 f3 A# [ M& I while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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( u! r8 T+ ~+ G# D! U mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; , b: l. T* m4 H2 Q F! F/ f+ S' {
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );# z/ ~; A8 @$ {7 [) t" @( c
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
0 s2 S; V5 p. ^( ] while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );% y6 f [) z/ y* I$ F# K! s( T# ]
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CSR = 0x0000;
/ U4 r4 B: @& w& h; Y0 h5 Z5 Z o6 I& _ INTC_INTMUX1 = 0x3d;
% H; Q; {+ a9 d ISTP = (unsigned int)vectors;7 _2 w0 w2 p. F/ z/ L# {, p6 F
ICR = 0xFFF0;
3 _) L* V( c2 d3 f; w1 `( I6 M IER |= 0x12;
% j6 h6 H# ^3 M9 I' W& |/ u CSR |= 0x01; ) J) H3 p$ l$ V: C* o# t
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还有就是两个输入输出函数:
* w- r- U' P3 |! A( R' H3 T% cvoid output_sample(Int32 out_data)# `6 ~: e* ^5 [
{
7 v' V2 M. o2 p2 Q/ G, [/ q AIC31_data.uint = out_data; 2 E8 j6 J6 q }, e. ~: j
MCASP1_XBUF5_32BIT = AIC31_data.uint;, u3 p9 W' ~+ G, H) T, j3 e; V) W
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8 \* w# _, ~! I& f; C" \Int32 input_sample(void): X5 s# n3 s5 V" G+ K
{ 6 q) ?+ }) U3 V
AIC31_data.uint = MCASP1_RBUF0_32BIT;0 Y" N- ]! Q' Y" q/ S* E
return (AIC31_data.uint);
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