|
|
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:/ {! l4 Q4 W! r8 }5 y3 u
main文件:
# ]; b3 C& d5 w! C: ^, o. S: Xinterrupt void interrupt4(void)
' u3 c: _% X- V5 Z{5 E: R7 Y! _$ r$ ^
Uint32 sample;9 H; C" P3 `8 r% a" e
1 H: x) [* D8 t b/ ? sample = input_sample(); // read L + R samples from ADC4 K4 v m b3 r, R3 H/ U. V
output_sample(sample); // write L + R samples to DAC
1 N4 C6 d& e8 P6 f return;, r5 j! _* H; p3 h
}' F* l4 y+ v% O# L$ P3 R
$ B& O& i. u) U/ [$ w: }; i3 i3 fint main( void )
) T/ d0 t4 q2 s# e: U* `{5 e0 m/ W# w/ i Q, S
" _! R1 R3 W; J' m
/* Initialize BSL */) x/ |5 ]: M. K* T) [) L8 @
EVMC6747_init( );6 y* `! Q X6 J$ `$ n9 _; v1 [
/* Call evmc6747_intr function */5 l4 c, [! C, g& n
aic3106_init( );
/ G; |# I- N4 a8 Z$ w. K3 q while(1);1 T8 }3 b2 K! q9 B c7 I
}
# K# A9 k# X$ Q; Z9 |: r; J6 S8 i
b$ W( F- A0 n4 E; t8 ]4 ~+ N2 B, \( l
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0 S I9 L; l6 j' g
/* Initialize MCASP1 */
/ C7 u. t' Q- d2 E& ^ mcasp = &MCASP_MODULE_1;5 I x* z H5 i' E
mcasp->regs->GBLCTL = 0; // Reset& B: S$ u t$ ?
mcasp->regs->RGBLCTL = 0; // Reset RX
- @. Q. }0 x0 d8 l mcasp->regs->XGBLCTL = 0; // Reset TX
1 L5 `* ]7 T- \; E2 b* } mcasp->regs->PWRDEMU = 1; // Free-running/ H8 R9 K1 {% i/ k2 D
// configure McASP0 receive registers
# h( X+ e/ w' Y* O& K7 m8 ] mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
$ R- |, x5 e8 e3 G8 I% z mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus. a# j% v& b- k" E! A: @; T* h/ y$ H
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
" i, X0 L$ I3 @( F( u6 m mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
& z: q( |9 J5 H, `2 v. y0 k mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
, K: H: M' V' I4 \ Z) @8 z mcasp->regs->RTDM = 0x00000003; // Slots 0,18 r2 v3 n" m" ^- `, i
mcasp->regs->RINTCTL = 0x00000000; // Not used5 d6 I+ Y- X+ o6 y: o
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256& n/ m' `1 X8 x0 ~! I6 g5 ^
: u3 A' ^( n6 S; s- s# _, H l
mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used7 ]7 M# B" c- @2 a. ^
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
, x, I7 d9 b" o mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word F3 X. _) L5 ~$ n. f: a6 Q
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16+ F7 w1 i% m* m
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK# G8 \! a9 @0 `
mcasp->regs->XTDM = 0x00000003; // Slots 0,1, y; j% z7 P" W4 c0 j
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit$ r. B; @ c! B8 m- L1 n
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
0 ?# e: _) J- l! x1 G& D( i! x; p0 {: c, }' k; Z" M( N' f# F
mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN `: r3 n9 D- W% j1 C
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT! h* s" `$ L$ S# r, P
mcasp->regs->PFUNC = 0; // All MCASPs
# a* |6 O: O% @# q w! d/ W mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1* ?; S9 R. Y l; F" w( X6 b
6 L: R5 d- O1 _% V4 } x4 K$ x mcasp->regs->DITCTL = 0x00000000; // Not used9 p6 Z n* `% Y) ]; @% m$ a
mcasp->regs->DLBCTL = 0x00000000; // Not used3 e5 `1 [% U8 k4 e) f5 @
mcasp->regs->AMUTE = 0x00000000; // Not used
|* q/ \4 a) W; e. X9 \) y! X" b2 H9 K: K2 F7 y5 r: o' e
/* Starting sections of the McASP*/4 N1 n! E) _/ x3 c0 r
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; . ]% N% Z- U( D
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); , ^; R. Q- S& J7 _
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
: a+ ]: I. @0 l2 _) V, a while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
( I2 A& t) P4 _$ L: y% e: @) `
mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; / U6 n" T6 F8 q7 g
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
" P# M7 @4 }6 ?) Z6 u% z4 P/ ` mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
. _7 j$ D9 u/ g: C: a! Y while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
. o7 J2 p7 I& {: w
0 M0 ]9 f) A* F. W2 i mcasp->regs->XSTAT = 0x0000ffff;
7 f! a6 ?& i1 T( b mcasp->regs->RSTAT = 0x0000ffff;
& v& E) X2 {; n# \( ]4 k( d3 r. u( w" l- k Q
mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;" N- w- V# a# m
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
& Q2 G: r2 R, h( v mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
% S2 j4 I) X" t: A6 S. D; o$ H1 X' Z5 A while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );/ l5 \3 k" j6 S& J
/ S- @0 P: u6 q( H7 @3 y /* Write a 0, so that no underrun occurs after releasing the state machine */
; ^3 i a8 X2 G( C4 u mcasp->regs->XBUF5 = 0;
" f0 ~" @0 I6 {5 A+ s; k- U$ ?8 r mcasp->regs->RBUF0 = 0;
6 V% {9 B9 }9 W7 g) j) `
& X6 Q& T; f* j& y. S mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 1 W) j" d8 F. V* K+ M+ L$ Q A2 x
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
) U: {+ z- {/ d& D; F, j" O mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
9 e) A% u% V+ V2 I/ J! T! G while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
, D) M9 f) L- r( H- D: G K4 S
* _3 [/ X9 X! { L/ C" f9 N# A( o mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 2 o* n4 B- h8 O9 N
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );% A5 y6 y1 O! T- C. F& H9 |' d
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; 0 K1 n m2 _* m5 R" q
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
. N7 Z4 m. T/ w. T; B z/ B/ U6 b0 T2 C, k+ {9 ]
CSR = 0x0000;
1 T! o8 S" D$ ?. B6 W) i) A3 x+ | INTC_INTMUX1 = 0x3d;
0 @+ A5 \2 t( Z. P& y ISTP = (unsigned int)vectors;% G8 U7 \$ C- I- Y
ICR = 0xFFF0; 4 Y! H' m4 R6 x$ r
IER |= 0x12;
2 g' B1 U& K6 E: x CSR |= 0x01; 0 o. T W8 X/ l! K) H" `3 J
Z0 U |0 u& l$ G5 }
1 s+ t. d" y, m5 l( [1 P' g& J
- q5 u, R3 k" L: I$ K* j还有就是两个输入输出函数:
0 _ F+ L; Z- T) g% avoid output_sample(Int32 out_data)
$ ?' M. b: O# S{- v; M6 C" z# c; U1 t( H& H
AIC31_data.uint = out_data;
2 I; l! d2 N" U5 j& `3 J$ X: X MCASP1_XBUF5_32BIT = AIC31_data.uint;
# w5 o1 s2 c: q, A4 A}& P9 c) d8 q) P* h! K# F* ~/ O
0 [/ Y, F" ~3 n2 E* D
Int32 input_sample(void)
0 G( A: a$ G$ V$ e, X{ * j- p! [, P: f7 p# ]# T+ d _
AIC31_data.uint = MCASP1_RBUF0_32BIT;5 j; \; [9 X# k" N: C
return (AIC31_data.uint);
6 F; B5 r5 D1 N1 O}7 g' b) ?" ]$ B/ y! u# h2 i: N
6 O- D ~: |" r
|
|