|
|
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:2 Q% Z/ S O9 z5 a) k" @
main文件:0 C1 T, U4 e9 L5 q$ i+ Q4 r
interrupt void interrupt4(void)
6 b. n$ D5 |/ x& a% d/ T7 F$ F4 W{& G6 w; m, v" E: o4 {& b; s& h
Uint32 sample;1 p' l2 W6 p @7 q
% z# X9 m) ?) L& i5 S% D9 |/ z
sample = input_sample(); // read L + R samples from ADC+ A( g! L# A3 F
output_sample(sample); // write L + R samples to DAC
' V ?1 n; V# Y$ u return;
2 c$ ^' S' F, F. r! L& ]}
- D+ @5 u" I: r( ]5 x' m% P, M2 x4 s# ^
int main( void )4 F0 W# \- ]- k. Q% \# t
{6 [3 _$ g4 Y9 b* L5 I- y; g: S3 a
, Y7 Z6 D; i t) M6 z* ~2 S /* Initialize BSL */
% T3 }$ O" o) ?' i EVMC6747_init( );$ _0 {$ i- {* f `) R/ A
/* Call evmc6747_intr function */
8 j0 f: g4 ^3 J* K6 r aic3106_init( );1 W& Y- R; Q& Q
while(1);* I% u& u |) ]( a6 E" ?4 O+ g D
}$ ?; `- u/ o2 h& g/ K. ]" a
0 k8 N( D0 h& C+ [* w" h/ y$ @! K; V) w0 B8 K2 r1 ^
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, R* D( _" N4 ?3 {5 p/ i6 a* y$ I
/* Initialize MCASP1 */) I/ q2 k5 N* l
mcasp = &MCASP_MODULE_1;
/ ?: f1 ^. y2 D- A: G mcasp->regs->GBLCTL = 0; // Reset9 z8 H |) T' C1 O. x
mcasp->regs->RGBLCTL = 0; // Reset RX# P; n7 t' d0 A4 L1 C" i6 \
mcasp->regs->XGBLCTL = 0; // Reset TX$ _2 U j- Z3 X C3 q3 M% i
mcasp->regs->PWRDEMU = 1; // Free-running8 j1 g! j ] C) M. d' R- {
// configure McASP0 receive registers
% u/ V# v% c+ v l5 y5 n6 W9 ^ mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
* m% s$ k4 E' b3 D+ U mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus+ M9 x6 i% i: g0 W4 G% h
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word& T% L0 x7 t) e; @
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)2 C! A K6 V8 l; L) L% k
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
7 q& u+ p0 ^$ {! I5 \' h mcasp->regs->RTDM = 0x00000003; // Slots 0,1
. Z+ ?6 }( C& e, j mcasp->regs->RINTCTL = 0x00000000; // Not used/ i. d% p2 s: h4 s# U" K
mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
9 ?7 s/ B7 X2 ^7 n1 `
0 h. U2 E0 _2 r+ { mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used* g: F/ x6 M0 _. O5 ^
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
_& `' W F h* T mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word/ p( n7 ]. i: b, L8 D" `
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16) A3 [+ N8 F( ]3 X
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
9 z1 Y H. j6 Y7 O/ ]! \ N2 w mcasp->regs->XTDM = 0x00000003; // Slots 0,1+ J: L4 x9 u. X. K. u3 T: N$ Z
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit; M& t+ D. ?, x$ ^' `0 R+ I
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
. Q, I+ h0 @; S7 T: k' H" b3 v ~( u2 d1 l6 x
mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN; v/ ^: G& P) J) b9 w9 O
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT) I9 S2 |5 L9 N O1 ^
mcasp->regs->PFUNC = 0; // All MCASPs
, t6 s9 ^) o2 [/ x4 O mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1" K# {" L% {6 A" L& x
& w/ `: q ~- ^: F* Y2 s
mcasp->regs->DITCTL = 0x00000000; // Not used9 g0 b% Q0 Z1 Y
mcasp->regs->DLBCTL = 0x00000000; // Not used
1 W# F8 W* |$ J5 I7 s- B mcasp->regs->AMUTE = 0x00000000; // Not used% i3 j7 }+ H3 N0 Z p
+ M! P# A' q7 x/ \' ~3 v2 R1 O/* Starting sections of the McASP*/
4 }3 f, e- b' g2 ~8 r mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 2 B! s0 _3 _- b! e
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
# H/ @& R: M7 ]- o- v mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
" H' y. H! j. A4 _ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );& g o; |& d+ @+ a
+ G& o# X* u3 B4 z3 o mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
9 T$ X% k8 G7 C7 \% |+ d while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
. o6 x' Y5 w0 j3 _2 x8 \1 T8 D! O. y mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; + i/ U% q% j" Q [# S6 f
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );6 r# n% R) H0 f$ b% O/ f c
- Q6 [) l3 I4 v7 m s1 U mcasp->regs->XSTAT = 0x0000ffff;
$ w/ Y& k, v3 g( X4 R mcasp->regs->RSTAT = 0x0000ffff;
0 U1 A1 w, W, A# ?6 Y4 z# ?
+ r! i2 g& I/ Z ?( P mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
) i c3 k, Z' V0 Y3 H# [; } while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );1 w' X& u0 _5 y# J
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
; z) Q3 ]/ \: z& T; e( x while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );7 B6 w; L; w- F* Y: y9 ^) d
6 e- O* O. `& p" R" t( B /* Write a 0, so that no underrun occurs after releasing the state machine */; |3 W# L0 V* r7 Z9 t
mcasp->regs->XBUF5 = 0;9 p9 v# H9 A2 L" d6 `. Q! h
mcasp->regs->RBUF0 = 0;2 O! `- H; w u: X z4 W& q
1 @ y. j: `, k J
mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; ! T2 l' Z1 ~+ o: v
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );8 C4 k- W; Z" O1 j/ R* [: U
mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
- z3 G6 U9 u5 I4 `- I while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );5 f) b2 m0 ~ d5 _- `
2 F6 H h- ?. k I6 V mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 2 P: m6 L! b6 d
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );6 Q7 m+ |9 d. m- H$ i+ P* u: X$ W
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
: `! e' ^3 |7 d: H while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
4 y- G7 T/ O5 B- }# f0 ]0 l4 l% b4 A1 {( u; v1 K
CSR = 0x0000;
! b. s& u+ F- O! i INTC_INTMUX1 = 0x3d;7 E9 X2 I9 L' @+ O
ISTP = (unsigned int)vectors;2 a/ ?8 S7 T4 F0 s! T
ICR = 0xFFF0; H8 j- e1 u; p f: \( _
IER |= 0x12;
6 w% Y, }9 l7 t4 M \* Y5 E" u CSR |= 0x01;
; b- T* U/ t' k6 j" e- X( g; r$ ]! _! C0 a3 ~* L& b
- T4 j5 w" c2 r
6 G: e$ a4 a. u
还有就是两个输入输出函数:1 f( R+ }% S" x# s4 ]6 d+ }
void output_sample(Int32 out_data)5 Y0 F) N/ H3 M
{
: \: L+ {, {0 E0 T+ l5 C( X0 r& X2 M AIC31_data.uint = out_data;
W q+ A4 o3 I: T" d& o+ N MCASP1_XBUF5_32BIT = AIC31_data.uint;
/ X4 W; i3 [% T/ k3 f5 h9 k}9 b) h; f+ k' Y1 j+ {" H. l
$ m: d7 W( o) H7 F$ E
Int32 input_sample(void)7 e W X8 H0 G" y4 z0 \; ^
{ # d8 c, G2 W K. t" c p6 A% C
AIC31_data.uint = MCASP1_RBUF0_32BIT;
: U$ B. U9 v: D$ B% P return (AIC31_data.uint);% `. u' ~, w0 ?4 z
}) ?1 Z1 L2 U8 y! J+ O
9 W( [0 d* I( _' @ |
|