|
|
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:
7 q- m' B. a( R% ?6 S. Hmain文件:4 b" U% l e. Z0 C
interrupt void interrupt4(void)
% w% T6 @: @* v( m G7 Z{
# v! O* L# B; {2 @ Uint32 sample;9 W8 S$ ]8 D* o5 s- X m- p
7 W6 G+ {& h5 N& ^7 Q- ^$ K
sample = input_sample(); // read L + R samples from ADC2 p* V$ k1 Q3 D `- e* X) r+ e' G
output_sample(sample); // write L + R samples to DAC
8 w' [3 y& V2 s4 a& } N! k% { return;+ v. [% X3 c7 a& }. w7 W- T( C/ A& l
}
% I3 b1 a- B5 L
$ z3 Q! u% T C8 z; {int main( void )
+ q# C8 V- o9 F! @- T{2 H( y8 F0 n- P% K( R2 a3 A! Z2 v) S9 Q
2 ?9 B3 F" K! T/ E4 z/ [7 Y
/* Initialize BSL */3 g' x: \5 p$ t
EVMC6747_init( );+ s6 q9 q7 N( l6 M$ `; y
/* Call evmc6747_intr function */
, J7 E, q$ H* h+ T aic3106_init( );
" _2 J; X/ B( N' q, W+ N5 b2 c while(1);0 k( V+ u B1 B5 R7 l/ h: d. o' `
}
6 e" l+ }- f" D6 [$ ]' }! P
8 U& W: b+ t: g; y8 ]
% T4 V5 p, c# R* aaic3106_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& W. [. F! c. L1 n% f2 A1 T( r
/* Initialize MCASP1 */
% U; l! t9 t- _- \, ~7 x: @ mcasp = &MCASP_MODULE_1;" ?) j/ _/ ?+ R' w6 W
mcasp->regs->GBLCTL = 0; // Reset% z* Y; s4 t$ @0 q3 Q! b
mcasp->regs->RGBLCTL = 0; // Reset RX
, ]' D# z- Y+ f+ J mcasp->regs->XGBLCTL = 0; // Reset TX
: Y& x$ c5 s/ S9 T7 D mcasp->regs->PWRDEMU = 1; // Free-running- G9 a+ K; F+ E5 E8 G
// configure McASP0 receive registers' M2 F6 J9 B. b9 r
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
5 ]6 ~+ ?) i& S0 y: [0 y8 X0 E mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
9 N5 ]% r; O, {- f: H mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
4 a3 b5 j4 E3 x4 |% ]7 V9 b mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
: X) `6 m- u* R% O$ U! j$ ` mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
7 n3 J- s9 A# m/ [/ j: I. W7 ~ mcasp->regs->RTDM = 0x00000003; // Slots 0,1
$ b$ [; e N7 r# H$ G- c; } mcasp->regs->RINTCTL = 0x00000000; // Not used
% ?' J/ t* e+ k1 X9 P, [& C mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
' j0 k/ ]' b5 o/ R2 A# k5 H9 P0 E' p& ~
mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used, t+ w6 y/ W8 L2 H- N& l
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
( @, }$ }3 e ^ mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
- r+ R8 g4 ]6 ]3 x; |1 R1 J1 ?0 L mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16
6 Y! ~1 i' d% C: I6 P' l mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK, ?, b8 Q! }% Q, K( H/ y( V
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
- a. f: U+ Z+ z& M% N) ] mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
0 E+ i" Q3 _# t& J- @3 k* X+ [2 d mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2560 W0 R, \0 B' H3 P( D7 z# L: }
& C+ m7 D* v& m( ~4 ?7 p
mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
( `' N: E4 X$ ]) P9 G mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT" n* ?- e+ \- X+ c9 m
mcasp->regs->PFUNC = 0; // All MCASPs
, R* C O2 C9 L6 M mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
8 T1 ]: {! r7 f8 S4 m3 I3 g7 u+ B; N) z, k) v( [' ~# [+ L6 t! ?
mcasp->regs->DITCTL = 0x00000000; // Not used( Y% D: U+ r8 X3 ?) V
mcasp->regs->DLBCTL = 0x00000000; // Not used
0 d# s, h; ^% N; h0 ]- |6 {4 Z mcasp->regs->AMUTE = 0x00000000; // Not used' d) v" ~2 ?: |
0 N# A& [! I. k0 ]/* Starting sections of the McASP*/
! S' l; j. _- q4 ]( H mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; + q& G2 O. C8 a S
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); ( K: ^. y6 V3 |/ {# i0 R
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; 8 p* ^ j8 @ H1 B- Z& H
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
, v/ V* }3 }1 G# o! c% ~
+ j0 Q* [7 h: P# t mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
7 x3 n! E+ S5 V- s5 D while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
+ [( W9 W/ [! C1 _0 |1 W+ j. Y mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
+ u1 ~8 [/ }$ o- K2 T! { while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );; c* f4 [( C3 i2 B, I& n* l
& d0 n! @; z$ U- O; Z! l( \
mcasp->regs->XSTAT = 0x0000ffff; & S# h& v) k4 B/ K' Q: k' g/ S
mcasp->regs->RSTAT = 0x0000ffff; 5 w+ l* c" [9 Q
0 n* y7 E9 J) s `1 G5 f mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;0 v: }3 g$ ~ ]( X7 J/ C; l
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );) a* o `- k, n$ b- R; R
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
+ m6 ^1 y/ O0 h0 J0 L" _) F, p while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );# m. J6 Q9 _0 v0 g- B9 ]* c
# Z: Q. ~8 S/ X4 n. Q /* Write a 0, so that no underrun occurs after releasing the state machine */9 E" S8 h! ~) M9 Q, t9 {9 B" l8 z
mcasp->regs->XBUF5 = 0;" a% [& m! _3 q( s' L% t
mcasp->regs->RBUF0 = 0; w7 t/ q) h! b6 y
* {+ ]+ M1 D5 s8 N
mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; % ]- x6 L0 w2 G2 B, Q* [. V
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );# S. [; o! y. q4 R' H5 w0 h# Y
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
- B' C, X- m* y: i while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );2 ~5 G0 m/ C4 X( G! Y
D) ], t! i: P3 V# ~8 a% C mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; ) j4 r* b3 s% J8 x K
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
: W! U; p; G: x" c% ^8 {) Q, C mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 7 F4 }# u, ?; |/ W
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
1 W/ p$ ]3 G. K2 a0 d7 r! c: g6 z( [ ?1 [9 }4 e
CSR = 0x0000;: |' R0 C4 h/ E; `
INTC_INTMUX1 = 0x3d;
1 v" U! N1 k( D' ]7 r; b ISTP = (unsigned int)vectors;
9 o( M0 C( E8 r3 b6 I: E6 i2 Y& b: f ICR = 0xFFF0;
, |- F, D. T! y+ l4 v IER |= 0x12; ) O, G- u8 D9 L0 p% q
CSR |= 0x01; - a! ^% J3 H6 A$ x
& v2 s; v+ C+ a+ i* L" L$ {+ h0 o) ^4 `9 i9 T3 a
0 M' V- V% B. x! j4 ^9 R( I
还有就是两个输入输出函数:/ Q/ L! D) l& ]7 v6 m
void output_sample(Int32 out_data): s( e. G: H, j" A
{9 W6 u9 j7 t3 R$ C0 i8 P) e
AIC31_data.uint = out_data; 2 |( I, Z y5 s" W2 o
MCASP1_XBUF5_32BIT = AIC31_data.uint;( Y) H! r9 C& E* n2 I" h
}- Y) ]/ ~3 G- P# {' \, W
# D! j3 Q a' K: [- K9 E) D/ m! o
Int32 input_sample(void) v6 B+ k% h) s6 Z! q$ \
{
% I* J. v/ F w1 g AIC31_data.uint = MCASP1_RBUF0_32BIT;# |. h, g; |/ g
return (AIC31_data.uint);
- f+ u7 x( o- V}
8 C: f& e5 p( I
5 U5 g% U# w! e, U |
|