|
|
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:
/ z6 h0 }" I) G5 ~( Rmain文件:
# y! e: |/ J: y4 K# v& ~1 w9 ~) |interrupt void interrupt4(void) 9 b, R5 L/ {; E( i5 _2 y7 d( _- ~- j
{
}& U8 l2 n0 s+ ~: n b' X Uint32 sample;
3 W) T) k n/ `. U- g A
6 u% k3 O1 D% O2 K, \, \% B( l' C sample = input_sample(); // read L + R samples from ADC* N( _5 L( h! s# g9 c9 _3 D7 |3 G
output_sample(sample); // write L + R samples to DAC
5 k+ V b- j6 I: k, w return;( C! p: I% W* T9 {! z% f# z
}3 g0 X. p/ b# }) E
" |& h" ^/ P0 Y/ Q6 p/ o" W# `0 j
int main( void )% F2 T2 e, {) d+ @1 b
{
+ d* w; c0 Q% ~, C
1 ?: e- Y$ [: ~0 P$ _3 w /* Initialize BSL */$ n A6 t2 f/ W
EVMC6747_init( );% V* G" r j& F3 |9 `* A
/* Call evmc6747_intr function */5 `5 }! [6 r: R1 Q1 m
aic3106_init( );
* s# ^' d2 {5 p5 D3 H4 J while(1);* I% t8 P3 F8 x( `. W# X) w. G
}
~# |5 Y3 @# Q _
- l3 ?7 L' b5 U2 {
# k9 U. \$ p- \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% c+ x5 v" a5 s! Z
/* Initialize MCASP1 */
$ x, Q. r. `, b5 ^$ l# G mcasp = &MCASP_MODULE_1;) S( r( {3 h7 C0 X# D
mcasp->regs->GBLCTL = 0; // Reset. i9 f; V! s6 F n
mcasp->regs->RGBLCTL = 0; // Reset RX
8 Q* Q* S# t3 E K6 v mcasp->regs->XGBLCTL = 0; // Reset TX; x8 W. g* u+ Q8 i
mcasp->regs->PWRDEMU = 1; // Free-running% A* r/ V/ i5 o
// configure McASP0 receive registers
" E) @, n/ a$ @4 \4 r E9 |& k mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used
7 L0 |7 e6 I6 s7 H* s mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus1 ~9 |% B0 c: H, Z; R
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
) Y% D* `. X5 ~ mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)
1 q. N# R$ b6 C mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)
& V" I8 x/ M/ S4 ?0 v- _ mcasp->regs->RTDM = 0x00000003; // Slots 0,1
! J, X$ N! F) J mcasp->regs->RINTCTL = 0x00000000; // Not used
@4 E) d; Q" U) c mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
' B8 }% j6 q% s; W" S' s6 d& D' l" E; {) n1 X
mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
: ?! u* E3 @/ l" I) X7 u mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus/ h7 R' a, s+ u
mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word8 t0 M& h ?1 P# Y# c; x; Z' y, B
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-16' |/ @. M, F# }, E' A' |1 ^' l
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK# j1 c9 x$ s( f# {
mcasp->regs->XTDM = 0x00000003; // Slots 0,1( B; I/ z2 ?7 y _, ~. F# r
mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
# x9 o: d; c% I& C( B mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
! n& |/ x* ]* g4 N
7 u0 b9 I' Y% H6 E5 q3 P/ ~. U& x mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
8 G- D5 e Z; } mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT W# @- z& U2 J6 E3 E j6 ~
mcasp->regs->PFUNC = 0; // All MCASPs
( @7 b4 K7 v6 d. O. p( F7 y" } mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
; |$ G" O7 y T) X
6 h) _! {5 p/ i; x4 g mcasp->regs->DITCTL = 0x00000000; // Not used ?4 K) B% o! M
mcasp->regs->DLBCTL = 0x00000000; // Not used3 `4 b, s4 J: i9 j
mcasp->regs->AMUTE = 0x00000000; // Not used) n5 c0 V1 s1 J- x
1 u6 F" @( E! s4 {! f2 w5 D O2 V/* Starting sections of the McASP*/
9 u5 d; M* Z# s# t% N mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 3 k0 G0 b' P% T7 Q, r1 Y1 D& M
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON ); ) u5 {( T" a9 }) W$ W
mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; . T/ V* r: m( M+ K h
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );( B: y! z* U, I! T
# ]: }! x% Z+ l6 I2 P7 E mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON; 7 T/ g1 J( _6 {1 Y/ V* x0 @! a
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );, m& S1 ?5 E* c1 O! r
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON; 2 e3 U) y9 W5 S- f9 m& U$ [
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );# s& [" q& c' ~- ?5 x$ [
1 z2 ?2 \" ~* R! m9 M
mcasp->regs->XSTAT = 0x0000ffff;
# l1 v# i! }5 j x: C+ p mcasp->regs->RSTAT = 0x0000ffff; Y/ |8 E" @2 ]4 E$ ?% |
$ k5 t; a" a! Y! Q" I/ }( \ L+ o6 z
mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;' T% |; [4 r: Q; s3 o* @2 M9 J
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );* }7 y% K2 ]" S7 ]
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
5 u: i/ U O; X ~9 u7 ^0 e. I while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );! l) ^7 W, r2 j: b
6 s$ Y2 G) Y4 u" V /* Write a 0, so that no underrun occurs after releasing the state machine */& V9 W! k" y+ U% E
mcasp->regs->XBUF5 = 0;
8 x1 ?! {2 x6 p( ]) u; z1 l6 i/ U' w mcasp->regs->RBUF0 = 0;; i! F6 o; P4 u1 H/ u& U1 q
% E* O; D% T* r6 Y, w mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; + ?4 x' q# y; t
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
6 E7 x/ ^* x4 |$ w mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
7 \6 J0 n' l0 `% @+ h while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
* t7 M6 N; G' P C0 p
- z# I: q, i7 i0 D mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; ! f5 @9 x- n7 X1 m% Z; R
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );" y$ j0 L: o7 A' u9 O% W2 W4 A9 J
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
/ j1 M$ w7 e4 E) S9 \ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );
6 W; ~3 Q/ G' H/ H* h# u P N/ a+ i8 V# H
CSR = 0x0000;7 h5 n9 r& X! N: r( c, R( U9 ^
INTC_INTMUX1 = 0x3d;/ H. L* Y" O) F i
ISTP = (unsigned int)vectors;
. |' ]* W4 g9 e; w' Z$ {8 q6 ^ ICR = 0xFFF0;
+ X* `6 k4 G' S IER |= 0x12;
) m' k; ? Y3 U: i CSR |= 0x01;
0 ^' S" F# r6 V1 P& }5 b) f
, y, _8 P" r. y
* f7 m" F; v. Y' [$ X9 C& v! }5 O( f; u
还有就是两个输入输出函数:/ h) @8 B- O: G7 D) D
void output_sample(Int32 out_data)
" a. @" H$ v. \' a# }{, C$ s* h. w& |' Q+ H+ [
AIC31_data.uint = out_data; ( [0 O) Z3 t) ?( N4 Q. k
MCASP1_XBUF5_32BIT = AIC31_data.uint;
) B8 B( D) d& E* _4 c0 Z" l; U} S2 i/ e1 v9 u3 A% G
6 o0 l b1 z) J- _/ G9 N# u; M3 G
Int32 input_sample(void)
. }& _: T7 R. T# S{ 6 A; x9 _6 q# P" [
AIC31_data.uint = MCASP1_RBUF0_32BIT;
' }% D# o& F* b e& E) ^ return (AIC31_data.uint);
# S. {; p& \- _ E a1 A+ l4 m}
4 X( g% j) [# ` P
& s* \9 ]8 P/ X; [& V/ j2 u |
|