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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:4 a; P. z0 d8 F. K& I
main文件:
/ _' u6 p9 K& f# L$ iinterrupt void interrupt4(void) * G! O( B4 K: R9 w1 y$ \
{
! B) h4 k A3 b9 m( q2 N Uint32 sample;
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9 M. x' E( C% U; N# Y3 p sample = input_sample(); // read L + R samples from ADC8 j; R, {, N& `2 N
output_sample(sample); // write L + R samples to DAC / |' k: r1 h. P# M
return;
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int main( void )
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+ ]( L; [3 b: `, E- ?# b& l2 G8 b /* Initialize BSL */
5 C. \4 g+ F0 _$ c$ c EVMC6747_init( );1 `' d5 R0 i6 y" d, q" g( }
/* Call evmc6747_intr function */
: S7 Z4 V, I, O- k% S aic3106_init( );" ?4 \$ c4 |* t
while(1);
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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
- A) l" r9 `" e/* Initialize MCASP1 */0 B O/ w3 p7 P$ p; p
mcasp = &MCASP_MODULE_1;: v" q. ^) @/ m! H" P
mcasp->regs->GBLCTL = 0; // Reset
* w: f) ~% f g% l7 [$ Z" c! ] mcasp->regs->RGBLCTL = 0; // Reset RX
9 B, c( S/ ~: ? mcasp->regs->XGBLCTL = 0; // Reset TX# o2 V. _, H9 R8 K; D0 q. U
mcasp->regs->PWRDEMU = 1; // Free-running
7 h3 I% X1 G0 q // configure McASP0 receive registers7 ], f0 R1 K" {2 J! [2 j
mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used8 {9 I# ?4 ]2 t2 n$ x
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus% [. t8 N+ _) M+ m/ I( M' e2 O' S
mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
4 U. D* ?' l) k" H: g1 Y- N mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)- [2 y, {2 U9 Y$ ]: c3 O# a
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)% }& K% v" a0 M# M. Y/ r9 B9 c. r
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
/ C( T4 `* E/ S' K# j mcasp->regs->RINTCTL = 0x00000000; // Not used
/ l \$ E$ ^3 j2 D/ a' j6 @& |$ m mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
& T2 t" m1 W/ X M9 y mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
6 A5 t. w3 \3 y/ ^* e mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word' ^/ x( u8 o7 }$ d; c
mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-165 Y9 l; |3 @7 X! S$ I! d) H
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK! ?; ]+ ~ `5 V! P
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
( O2 P7 {( [! @! `- L mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit' K4 o+ L3 W5 o: G6 H; O/ H, }
mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256. z1 S& l; p4 S) \, r$ Y8 o
. r6 j" A2 S, d1 O mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN2 e8 Q, E* l9 [6 u* i7 d' m
mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT2 C2 u8 U0 F7 D; c; S1 p5 ^6 d
mcasp->regs->PFUNC = 0; // All MCASPs
3 u+ O, x, I" ~& w mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX1
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mcasp->regs->DITCTL = 0x00000000; // Not used9 v& U" l) v- i9 A8 C# P
mcasp->regs->DLBCTL = 0x00000000; // Not used
! R: e" x: Y( D/ s( F mcasp->regs->AMUTE = 0x00000000; // Not used
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T/ B- e. h: [' Q* E6 `/* Starting sections of the McASP*/
3 c3 y6 p! f- X$ o8 V$ B; B mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; 3 P; f" i. Y# x
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
( t/ p: p6 ~, t2 l7 _; [ mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON; # g. _' y' w; B; j. s" E8 v
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
7 |; G; i% \; t6 l while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );
+ g! |% Q8 F) i5 S5 x, j. _: X mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
. V. |3 j8 \8 R: `( k( ^- o while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );
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mcasp->regs->XSTAT = 0x0000ffff; 3 H7 P E- p* _
mcasp->regs->RSTAT = 0x0000ffff; + s0 X& j* g: V% ~9 J* m
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mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
8 w" J! w: [- N1 Q' B* x" B% i while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );4 E* F2 ~/ m5 _1 M7 _
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON;
; \. j" ]) _4 a" \2 g4 y. d. B while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );) r+ U5 Q; b0 @# ^9 J9 P
! v4 M* R0 L+ R /* Write a 0, so that no underrun occurs after releasing the state machine */
8 i& i5 u4 l* M7 \$ p mcasp->regs->XBUF5 = 0;' h! ^( e% j# A* w
mcasp->regs->RBUF0 = 0;
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% f1 v! w9 a; o+ r* e mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON;
; E s5 F5 |8 G while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
0 j5 l$ U; p1 w1 z( H8 K' r mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
: d' C$ N$ b# f( t% k2 j while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON; 3 Z4 p' G1 D$ n9 p: \
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );& }$ R/ H/ k3 C& U
mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
' ?, [3 B! ?) ~( L. s. \' T while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );+ H( J3 ~) x/ E: D$ O
' {, ?7 |# q3 j3 p# q: O CSR = 0x0000;1 N" k5 }4 J8 y2 a" @
INTC_INTMUX1 = 0x3d;
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ICR = 0xFFF0; $ w: W5 F: C( g& q- s, u
IER |= 0x12; % l, Q% L! Y3 L- d
CSR |= 0x01;
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0 l9 Z" c) I n4 _( T8 X# D; W9 B- b: s还有就是两个输入输出函数:; A2 p6 s1 \! f% I! s
void output_sample(Int32 out_data)
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" S( O' Y) s/ ?4 n8 {! f) N AIC31_data.uint = out_data; Q( i) O6 f- h0 H+ S, {- n
MCASP1_XBUF5_32BIT = AIC31_data.uint;
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;! D* j8 `% l0 F5 B
return (AIC31_data.uint); o$ t1 p' g( E6 f9 `% p
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