|
|
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:! L6 D% b& I; @
main文件:+ i6 ?2 Z+ z% L; |% a. V; d% H. E
interrupt void interrupt4(void) ; B: ]' V% @4 Q- \. k
{
/ D b. K) k0 ]6 s4 u. A# I Uint32 sample;
$ \4 i# ~! ]; k0 j+ `6 u# G9 s. c
sample = input_sample(); // read L + R samples from ADC
# ^8 @% M6 S1 c output_sample(sample); // write L + R samples to DAC
! s* Y; Q" v7 f return;
) G& X) G2 t1 f ~ j& y- B}
! y: ~. b- o0 ~6 C2 s* g+ ^; h" @# A3 E$ s8 ^& b- ~
int main( void )
* o9 U: [* q) Y, v+ R( z9 r2 K{- G2 |2 C1 ~* c9 R
$ P8 H: i3 \5 G' {- y /* Initialize BSL */% D5 R6 j/ a) d$ k
EVMC6747_init( );" e0 `6 Q+ k) a' C2 {% i. z. z) q
/* Call evmc6747_intr function */
& T; Q* ]- }% G aic3106_init( );0 a9 T% u" k! ^8 ?, B: k, L/ P
while(1);+ K& E! x( z, ~8 Q& @+ O- _
}1 s1 v' P8 _+ [( N
3 N# @; F4 p9 E" F' b
3 o! T9 P" |. G! 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1 Z! Z+ ?$ P# r/ X% u; J
/* Initialize MCASP1 */) R/ ~- \! A" ]' N3 ~- _; w
mcasp = &MCASP_MODULE_1;
# N A8 |3 G* [% }" m mcasp->regs->GBLCTL = 0; // Reset: a0 ^0 y# g4 D) r9 T& I: U- G
mcasp->regs->RGBLCTL = 0; // Reset RX
' \' s/ g4 V9 g k% h1 k mcasp->regs->XGBLCTL = 0; // Reset TX
+ A" P/ O: S% U1 ^* L: J mcasp->regs->PWRDEMU = 1; // Free-running3 I4 A& n# `. P/ H& O7 X- E g7 a
// configure McASP0 receive registers8 \+ ^6 W$ r8 S: A
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
" f$ |% ]/ [& D! V) V, }* [ mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus9 T" z0 \ ~8 H9 F3 A! y
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
+ F) @6 j/ ?* J5 B4 Y0 j mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)+ `! h. ^# K/ q! b" }; n3 Q" C
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
) C% R% b$ m& G* ^ mcasp->regs->RTDM = 0x00000003; // Slots 0,16 d5 M3 [" m- k6 G. K
mcasp->regs->RINTCTL = 0x00000000; // Not used
6 A" k5 U: C: [: {+ f+ N" a mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
; T1 P; C4 k: D# D+ N1 H, _# l
: A- T9 t8 }5 W mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used4 o D, I- D: Y2 `0 r7 Z
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
; o2 I4 Y$ h+ I: [ mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word# }; V* ]# e) }( [
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16) N M$ S* h J5 _
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK* c* c& \ B9 S+ m0 ?! T
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
' E ?" P9 q- \+ X1 j" C! a, V. C mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
9 k9 l) f7 K f# j7 b mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256# K3 D6 U: r6 q$ v6 A
( i8 n. }' U0 W7 {7 ]
mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN0 T. X9 t( e! j2 ~
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT- J u/ `" R7 ?) o
mcasp->regs->PFUNC = 0; // All MCASPs
# d2 \) i! r' C% \( j7 J% H* J/ z2 x mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
! u' N* M* @+ T6 ^0 v- h: O B# m+ m# j$ ~; o$ P" r/ L0 H' g
mcasp->regs->DITCTL = 0x00000000; // Not used2 Y4 |* s/ E: m5 `
mcasp->regs->DLBCTL = 0x00000000; // Not used# ~! B8 c9 ~3 k; [9 f: n3 u
mcasp->regs->AMUTE = 0x00000000; // Not used, m# A Q; C4 r6 f/ M: ^0 `
( F2 Y9 m! [( h! n8 ]9 j/* Starting sections of the McASP*/
4 g$ Q8 t9 V$ z, l, M0 P) u* R" e, p mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
$ f* \# P, S2 o( O! P while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
4 ?$ P! e! x: K" ?) } mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; ' H3 I9 f5 t! ~* Q& w
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );4 K5 D8 W# G. `* W, J D- U
. v% s6 a3 u1 N" s. [
mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; - p# @, N5 H: `8 M5 }7 \" n3 G( E
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
" {! [+ F: _ Z- }6 x mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
( b! ]3 k |# n6 Z, E0 t while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );( b3 n7 O, M) u- u
% S- l% s$ r8 O7 \9 Z mcasp->regs->XSTAT = 0x0000ffff;
* c; G0 P* C) Z" e mcasp->regs->RSTAT = 0x0000ffff;
- ^5 z5 `" P. ~, |- K& R2 G$ ^4 e9 } f. u2 X: g3 J
mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;# K; K* z( n' S& j
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );1 o& l" p( J1 \. d+ q
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; % C% }- j4 u! ?" E* ]8 r
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
& M, q2 x A5 R! ~/ j C; A6 r8 Z1 m0 C, K
/* Write a 0, so that no underrun occurs after releasing the state machine */, C9 a$ p- `! x2 m- }6 b
mcasp->regs->XBUF5 = 0;
l: F1 j6 f" X) G mcasp->regs->RBUF0 = 0;3 M3 ^+ w# p' v1 t0 X1 X& R
/ `8 ]- s6 ]) j4 E' ^" ]6 b mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
; z' z5 T+ N! l, H8 t9 _( b while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
' \- j' M; I" I0 N- M" F1 U+ D) M0 B mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
3 r4 V; T6 ~% G! |; V4 J while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );! Q. \9 K( K" f6 N
( Z" h& U1 Y; f mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; ' Z C( I5 x- {" K* t& P5 S
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );2 ]4 C2 h" p% n2 |- A
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
* K' h: }2 ]+ R; x; D n while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );" L) k' Q( L0 i6 z# L+ \: d! a
% H; J, j6 F+ g* H `- b
CSR = 0x0000;3 J) B0 U$ B3 S" Z' t: [1 n
INTC_INTMUX1 = 0x3d;+ w! n# T9 m3 N% N
ISTP = (unsigned int)vectors;
; a0 A& |+ Q( e. _% q( _. P ICR = 0xFFF0; ) O5 X: ~) P! Y9 b7 Q" ^6 I
IER |= 0x12; - A) |: b+ T9 m& E5 B2 O
CSR |= 0x01;
3 H6 c" o+ h+ @- U- Z9 f( T2 W2 Y
5 [3 c" \& W2 q/ o) Z
6 x* m1 h9 E3 x. {4 F1 h5 l还有就是两个输入输出函数:' Z0 C" ?( P+ a
void output_sample(Int32 out_data)
2 {2 j; E( P5 w. K2 C% w8 s; o{
1 x. ?; w5 M7 V0 D AIC31_data.uint = out_data;
& {! t8 \: l: m/ e7 J) G2 ^ MCASP1_XBUF5_32BIT = AIC31_data.uint;
% x- ^' i2 b9 g. D}2 H1 Y) |! w! @
' D7 F/ V2 m) [5 B J, ~Int32 input_sample(void)6 o Q, ~5 s4 `
{
* y/ Y* @4 f8 W2 o! [# ~+ E0 \ AIC31_data.uint = MCASP1_RBUF0_32BIT;/ c# A: i6 z* @7 w
return (AIC31_data.uint);
! k$ `, Z- r7 ?# x* u}
8 J9 s9 N% i/ ?& M; A/ c, W5 H5 M4 t. `. I
|
|