|
|
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:+ w& M% L9 F3 p
main文件:
! X7 k2 o! c1 S$ n4 B; y m' [interrupt void interrupt4(void)
% z7 U: I7 y5 l# j( A' b5 z, D{, K4 R+ V0 y: p' K6 h b, [8 w
Uint32 sample;8 ~: A; X7 I6 T \
2 W3 Q. o! s$ `; g' |7 t
sample = input_sample(); // read L + R samples from ADC7 r# g* _0 [# f6 @7 P7 K
output_sample(sample); // write L + R samples to DAC 2 ~* @$ @0 \0 r d5 G5 y
return;
; E0 S8 D/ y2 w% B) }4 U2 I+ t}' U$ R/ j$ ^/ z/ v( @ C
+ [- H% ]1 A0 Q* ~5 v9 o8 ?, n5 z
int main( void )
( K/ W8 G+ g$ e2 m{( H2 T2 j) e/ l* ]% }5 b
8 S* m: y7 G4 { /* Initialize BSL */
1 L+ ^) p: D% X! p' l EVMC6747_init( );
7 t' v% i$ K. Y5 C) I /* Call evmc6747_intr function */
7 X& U# S4 I4 V1 L) w0 E" ^ aic3106_init( );
, _( A2 e$ D- Z ^( q while(1);
) ?9 x1 R6 `1 ?% @}' b2 W" X$ @. ?
/ _6 ?* Y1 r# ^, f8 o/ @( U
# k$ z; ], @$ e* M
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
3 E M" O4 F: m& [/* Initialize MCASP1 */
( X0 x* T& D, g1 D n mcasp = &MCASP_MODULE_1;
5 ?( S+ j8 \$ q6 Z. x% W mcasp->regs->GBLCTL = 0; // Reset9 l9 g+ S G) ~& M- T
mcasp->regs->RGBLCTL = 0; // Reset RX
( ]5 x4 S0 i# r; k mcasp->regs->XGBLCTL = 0; // Reset TX
4 `1 `: T. H3 l% ]; e4 ` mcasp->regs->PWRDEMU = 1; // Free-running8 r/ B) b6 g6 b7 c9 G
// configure McASP0 receive registers2 v0 P+ f {* f5 `; ?4 y
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used4 e, v P% u) L- F9 T# R
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
4 H/ V! H3 V0 l) x9 j k, u mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word7 T( x: S% {1 P
mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
" X8 v3 {4 M9 [" M4 T6 B4 F* U mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side): q u9 b: B- N# n: O8 }
mcasp->regs->RTDM = 0x00000003; // Slots 0,19 V/ c9 K) e' [! r
mcasp->regs->RINTCTL = 0x00000000; // Not used
; Z) V+ J; H) ~# M mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-2566 a6 o0 q% E+ c/ U8 b
4 k+ N. f$ X; M" t% E( o; t
mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used* M: z) ~+ @* ^- ]+ ]" n3 m( W& I
mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
0 ]! W- |3 ]0 k mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
- ^( U! g; O% F5 e mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16* {% {1 H# p; w2 F# i
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK
3 D# l x* j3 {$ W" g mcasp->regs->XTDM = 0x00000003; // Slots 0,1+ g" U8 T( W* c Q, F2 v
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
4 o% t% T4 E' ?* J mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
1 K2 }* V' l* ~5 f7 X$ V5 J# u/ Q* P. ?5 e* R4 T( h0 ?
mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN; g/ Y/ ^* s1 ]2 Y! R
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT
1 C4 s3 D. q: j2 _& M$ T" c" @ mcasp->regs->PFUNC = 0; // All MCASPs4 b3 X7 k* l4 T6 j; A0 W0 a
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX16 X: T2 u5 W/ W* z, y( r8 K
* ~" [4 a& m9 B mcasp->regs->DITCTL = 0x00000000; // Not used
+ X5 r5 a% a- d B0 u& |$ z; \ mcasp->regs->DLBCTL = 0x00000000; // Not used$ X: B3 J% B; B. \
mcasp->regs->AMUTE = 0x00000000; // Not used
4 S- p/ r! E- ]1 W' U, K/ S4 s3 l9 O' a0 n8 e. R( ~& I) Z% }
/* Starting sections of the McASP*/% }5 O& V" C! L" }* [3 }9 ]
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON;
$ X3 Q: X% j" k2 }8 { while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
6 L K: n& Q9 W) p" p8 U; j mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; : E) |! F B2 H; P7 |; `
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );9 p7 r) V9 c1 `
( O: T$ e! p: i mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
/ @+ o( y0 @1 S2 p! [8 O2 C while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
0 t! ^! y; f& K/ L( z! K! l mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
4 Z6 o* H/ J3 [) ^/ {4 j% O2 n while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );( g3 S4 [9 B# v* M
- V( H- I% J8 ?2 p( {) B mcasp->regs->XSTAT = 0x0000ffff; 9 ?4 m. \7 U# O* K: D" z
mcasp->regs->RSTAT = 0x0000ffff; # [3 g, l) Z" s: v9 d2 x' [
& s0 e1 G) G4 D S mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
0 ?2 f1 K3 ?% b' t# Y6 i while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );
2 }; H9 y5 X8 @6 Z' K; _; t) o9 A; G mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
6 G, c( ^9 b5 z4 [ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );
2 z# l, _' c0 d" a* D; l/ m8 r3 X) ^ D7 ?
/* Write a 0, so that no underrun occurs after releasing the state machine */; s3 V9 t3 Y5 u
mcasp->regs->XBUF5 = 0;
# b5 h2 U# Z) ]4 V mcasp->regs->RBUF0 = 0;1 B6 e7 S! K! [7 X7 M
) m+ l) H e2 ~ mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
: Z+ w, V9 W4 Q4 \3 ~' L while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
( @, @6 I( v2 V: a mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
+ G3 V" q7 Z) N$ M y& U! C( j while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );8 \5 u; I- u6 Q& ~% M( t0 m3 x
/ {/ w8 _ k' o) E4 {
mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; # t8 w+ d+ L4 F% R
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
' [5 @# h# t: Z) L. W } mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON; ' l$ M; A+ x0 C7 I- o; f& M$ K
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );/ U, Y- { S8 C
W4 s: L3 L1 f; G2 {
CSR = 0x0000;
: B3 T& g6 J+ L4 M# F1 }5 [' P' L INTC_INTMUX1 = 0x3d;
& [3 @8 h( U$ [$ | ISTP = (unsigned int)vectors;
; o% H' E8 Z& M% ] ICR = 0xFFF0; - s# Z& {# o; s5 S9 R# m! W
IER |= 0x12; ) R* x( X7 R1 r7 q6 @; Z4 s z
CSR |= 0x01; + W: V( H" F9 r |) g
( N. ~4 S- }8 g& r
, a% b# j5 M; X) L" O
7 z/ {4 i8 S! t) q; M- M; [: d还有就是两个输入输出函数:' H3 ~% w' {. S8 l5 p. a( }
void output_sample(Int32 out_data)
, T/ ]2 [8 Z; ]6 p{
c6 {% I& D5 w6 j; O* {: D AIC31_data.uint = out_data;
, d4 M* l" t: H MCASP1_XBUF5_32BIT = AIC31_data.uint;: }) o4 @6 F# I2 `/ i/ X% a( _
}
1 |" L6 z* v+ a: T1 H' l8 [8 I4 ~# ?0 m% }; S6 W- B& \" \ m
Int32 input_sample(void)
% T$ ^0 j8 @% z8 g0 p' E{
4 s+ W5 W7 [' d, x& ?6 T! D AIC31_data.uint = MCASP1_RBUF0_32BIT;
2 y/ e! j# K+ A2 P/ u& Y return (AIC31_data.uint);
( k" G/ f* [3 h& v9 ?: X! k! B3 }! B}
Q2 q6 S* I% w- f6 Y: _
0 p7 E+ u# o E* I |
|