|
|
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:+ o9 X% R. j5 C
main文件:
) ` F' @) ?, z6 R \interrupt void interrupt4(void)
" F* v q# r7 M" C/ l! o e{
% v7 I8 a1 ?1 `7 I Uint32 sample;; A( K& Q/ d& y4 y: D2 e
, N6 i9 P2 }) i( `/ t2 V8 P+ \
sample = input_sample(); // read L + R samples from ADC% `6 V: N4 ]# P
output_sample(sample); // write L + R samples to DAC
4 k7 z1 v: `" @$ I return;% a. `+ v. T% v! ]* V
}+ W8 }) ~0 {! e# Z' i
) S0 h( Y8 t& zint main( void )( W- `6 D9 ?+ P( G1 U' |: T5 A
{
$ e' u5 _$ G1 \; l0 q
M& n# D2 t) z& {* a3 W' p /* Initialize BSL */
# \* o) u: k; i7 a- \ EVMC6747_init( );
( P( Y. {" u7 c /* Call evmc6747_intr function */5 F9 W' d6 M/ W( @
aic3106_init( );
/ V. C/ p; u P J" o while(1);
5 J: B5 _4 u. E: y- h}3 w+ @- C$ V* \* W5 a; s. q" p
. |2 C/ c1 i, y; O4 L
9 P) P5 O9 {" |0 I5 w
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. Y4 ?, Y! H( M
/* Initialize MCASP1 */
; A7 n; J$ g* o' p mcasp = &MCASP_MODULE_1;( Q* L6 N7 A3 Y# R+ O( y
mcasp->regs->GBLCTL = 0; // Reset3 ]" q1 \. A: \( V
mcasp->regs->RGBLCTL = 0; // Reset RX$ d; r2 H' d, e0 a
mcasp->regs->XGBLCTL = 0; // Reset TX
3 x: E" d1 B- y mcasp->regs->PWRDEMU = 1; // Free-running2 k7 b; N6 @# X1 G' R \# A, G
// configure McASP0 receive registers
+ s9 Q/ K6 R' N8 }, C mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used, Y& Q. H/ E" W& h- o/ X3 i0 N
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
, U. O' _) @/ q2 n+ {7 A mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
; W) q4 K5 W9 o4 e4 Y# L( J0 l, K mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
' S+ n# Z+ ^* H. X, g l% u mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
* Y. p$ z7 m3 ]8 \3 Q3 Z mcasp->regs->RTDM = 0x00000003; // Slots 0,1/ \) D' z" A! [
mcasp->regs->RINTCTL = 0x00000000; // Not used
: `# J% t: O2 Y$ c: l+ I3 | \, t$ t mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
( K/ P0 L/ Q0 r) i( O, |$ [3 O) ]( C" c# l( o# N5 y
mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
A, [0 Z6 O: D mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
/ u/ s! o4 V2 `* m& u: B/ e mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
7 m% Q& k: O0 x( _* z2 P mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-164 P: N1 m! ?2 v7 n X: x
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
6 x9 Q; O( M! [- f( L; ]! v# a$ U9 O* T mcasp->regs->XTDM = 0x00000003; // Slots 0,1
7 i9 j/ c: n4 w7 P mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit2 U; ^( l8 ^/ p
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
; D- ~7 T4 @5 o* v* Y5 E `9 u# R# Q; |$ S" l+ r9 x
mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
9 S; ^: i! |2 [ \ mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT+ T( z) ?7 t, o9 }' S
mcasp->regs->PFUNC = 0; // All MCASPs
5 e8 X) M8 u" I) s& ~ v mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1* N6 {# k( b0 B- |( a/ c+ e# b. a
, C) U% }0 Z x/ M* f* b) B
mcasp->regs->DITCTL = 0x00000000; // Not used0 W# ^3 y8 ~5 r3 I/ I
mcasp->regs->DLBCTL = 0x00000000; // Not used. B% ~' Y6 m. i) d8 |
mcasp->regs->AMUTE = 0x00000000; // Not used5 L2 F7 t5 l1 B2 D* A2 F
( b" J4 {2 F; O/* Starting sections of the McASP*/
* R- [2 R$ g# l% {* E+ r mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
* W, E4 b; a- {% \$ H while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
; j- [" g2 d1 b; V mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
# w1 |1 H" R" y while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );$ H; |4 Y4 F: Z; ?
9 p8 F, v9 _9 [$ U( Q% r
mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
* V+ E9 e5 t/ W# f& z& j while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );2 o0 B, e8 ]' F5 l9 d3 g
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 6 v$ t' _# v; t0 c6 s2 Y
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
0 P" V5 d1 ^6 X+ f) c
' p6 Y [# L: d+ w mcasp->regs->XSTAT = 0x0000ffff; $ ?, W! Q) ^5 Q# o" w7 N
mcasp->regs->RSTAT = 0x0000ffff; ; g' y& K5 b: f- u) f9 h4 O m
; |. I8 Y0 q- T& |0 j$ k
mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;( T2 Z9 X4 N3 m+ s0 n
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );5 c1 A7 B5 ] {" n
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; ! Z5 J5 d; P! l8 e1 m
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
: m: q+ H: w6 ?* z. M+ o0 x
4 w) C0 O7 D6 [; F5 ~ /* Write a 0, so that no underrun occurs after releasing the state machine */6 I4 D9 `1 { h4 o l
mcasp->regs->XBUF5 = 0;2 b. V, |" I* y @
mcasp->regs->RBUF0 = 0;7 t* i; Q/ ]* \' H/ j5 c
2 r6 n5 w, e$ O; z4 f* k2 U
mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
$ g) d2 g$ l# m while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
( N0 V W+ W# b: g& C& T+ G) L mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON; 3 L3 z& R2 G, B5 G0 f
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );5 k* S' f( A. A. M8 e( U
' n- j' k; z7 Y2 p* j mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; # ^+ P4 m" e! W; A+ e
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
( ~% d0 l" s3 U1 {9 n mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
4 _# w; M4 e) { while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );5 ~+ z; N5 B. @
7 i& k3 G2 y7 f
CSR = 0x0000;- L0 L0 o4 ?4 G, S! \9 u
INTC_INTMUX1 = 0x3d;
4 \5 c1 h6 a: d& I ISTP = (unsigned int)vectors;
+ r! _$ p5 r, _: N ICR = 0xFFF0; - @7 Y$ C6 ]5 \/ E' j8 J
IER |= 0x12;
5 g; ?% ^2 M( A; ]0 u CSR |= 0x01;
. W! z, W+ ]1 E# j7 g3 D; ?' i& M# u
& |7 c- w9 x) z6 E
$ w2 O) U8 @! Q- Q/ P" |还有就是两个输入输出函数:
3 O/ Q! }+ `% Q5 Hvoid output_sample(Int32 out_data)
7 P# L0 s9 @& o/ Y{
: G( d& R/ y% M0 r$ W9 f0 l: O2 W5 q AIC31_data.uint = out_data;
, @! E8 e6 h1 D$ K# p MCASP1_XBUF5_32BIT = AIC31_data.uint;
* q2 Y. d& F2 Q& |2 [5 b}6 W. m! @, I4 J( a) {* e, d2 [
: x0 s+ J% _3 ~ z/ d( d
Int32 input_sample(void): c3 N7 I: ?' w* @
{
" I' M. K6 F7 a' S8 @9 V7 d" s AIC31_data.uint = MCASP1_RBUF0_32BIT;
+ d- h( i/ G: T return (AIC31_data.uint);
, L, i% T Y) j. f7 q4 o' j}
6 O2 } F' T; J0 t# g
0 J4 L4 ?# R- Z5 f3 ] |
|