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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:8 K6 j7 H7 I% C9 R6 i
main文件:
& } @( ]- O) S9 e, `# F" o2 m% J$ Ainterrupt void interrupt4(void)
9 p" A7 \$ F( b9 d! U1 G& n" `' Y4 t8 `{
* ^+ v( G+ f( P6 m Uint32 sample;
* `7 I# }- x* s9 n6 o2 L2 }, }; w& l! L5 A6 t( S: m( e
sample = input_sample(); // read L + R samples from ADC
" L8 ]" g" V# V) G, p4 ] output_sample(sample); // write L + R samples to DAC
2 |6 d, U( k# Q E$ W4 s% T2 R return;9 |4 k; j: ]& p
}
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. k: W- k i1 ]' I6 m+ ?1 m* C* Kint main( void )4 l7 I5 L, m' k+ {! {
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/ ^. ~; y$ a3 g6 J3 _; y% C /* Initialize BSL */
. @' r0 g9 }1 H& W) Y/ F! I" S EVMC6747_init( );
& ?- u( _+ Z3 ~# Z2 a4 P! Z' g \ /* Call evmc6747_intr function */
3 C, q2 ~5 o- u& g( o9 W aic3106_init( );2 L9 F- c4 L& q: L7 Z1 r* B% ]: }
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
( H" o, U9 t) s. F7 }7 r; \/* Initialize MCASP1 */
# r9 J* \6 F. r# q0 J$ B$ i mcasp = &MCASP_MODULE_1;% H9 }3 L* O7 ^/ B4 A, }; V' O+ n
mcasp->regs->GBLCTL = 0; // Reset
& w, I2 @5 v9 C! e, q. Y mcasp->regs->RGBLCTL = 0; // Reset RX- G2 k- k a9 w7 I
mcasp->regs->XGBLCTL = 0; // Reset TX+ k6 O: f! Q9 o) k
mcasp->regs->PWRDEMU = 1; // Free-running5 F9 E4 c g$ s! P3 Y
// configure McASP0 receive registers
- _7 m3 _9 Z. H7 }7 L3 H mcasp->regs->RMASK = 0xFFFFFFFF; // No padding used: J' Z. t# m# w1 B
mcasp->regs->RFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
( e/ G+ A% U K3 [9 D6 Y- |( K mcasp->regs->AFSRCTL = 0x00000112; // 2TDM, 1bit Falling, External FS, word
8 F G4 L6 A% V1 v/ I2 y& t0 x8 @ mcasp->regs->ACLKRCTL = 0x000000AF; // Rising INTERNAL CLK,(from tx side)0 j( b% o! I1 G
mcasp->regs->AHCLKRCTL = 0x00000000; // INT CLK (from tx side)5 k' {; F* ]3 L$ B5 S. ^
mcasp->regs->RTDM = 0x00000003; // Slots 0,1
3 J- a+ a7 P# S mcasp->regs->RINTCTL = 0x00000000; // Not used
8 n0 X! N- B0 V8 e' D! F6 Q" e mcasp->regs->RCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->XMASK = 0xFFFFFFFF; // No padding used
8 p5 o: y& ~5 o" ^+ C+ m mcasp->regs->XFMT = 0x00018078; // MSB 16bit, 0-delay, no pad, CFGBus
" w- }0 j; A2 e: A- r$ j mcasp->regs->AFSXCTL = 0x00000112; // 2TDM, 1bit Rising edge INTERNAL FS, word
: @4 }9 g2 c9 W3 L, }1 l mcasp->regs->ACLKXCTL = 0x000000AF; // ASYNC, Rising INTERNAL CLK, div-by-163 ~$ g& y8 F: `2 O
mcasp->regs->AHCLKXCTL = 0x00000000; // EXT CLK* u9 @2 l" a9 p3 C5 e+ Q
mcasp->regs->XTDM = 0x00000003; // Slots 0,1
' J( j6 @" V9 ?( g mcasp->regs->XINTCTL = 0x00000020; // interrupt on transmit
+ n) w; C4 V$ [" S D mcasp->regs->XCLKCHK = 0x00FF0008; // 255-MAX 0-MIN, div-by-256
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mcasp->regs->SRCTL5 = 0x000D; // MCASP1.AXR1[5] --> DIN
& \$ B9 G6 B9 h1 E mcasp->regs->SRCTL0 = 0x000E; // MCASP1.AXR1[0] <-- DOUT9 z) \# K( |+ t) e
mcasp->regs->PFUNC = 0; // All MCASPs! P6 T! _% V- A: K4 Y4 K
mcasp->regs->PDIR = 0x14000020; // All inputs except AXR0[5], ACLKX1, AFSX10 d- ? g- @8 ~' _0 }! z3 [
3 Z1 u8 f% F4 V9 x/ l* {% I mcasp->regs->DITCTL = 0x00000000; // Not used( W3 z: L6 I, @4 ~: U$ {' `$ P
mcasp->regs->DLBCTL = 0x00000000; // Not used0 y5 E4 w& `$ c! u
mcasp->regs->AMUTE = 0x00000000; // Not used- ]; f* V6 T% h* c/ S) S. Y
0 E1 z% [9 }; f
/* Starting sections of the McASP*/' V7 U, z6 I. E6 j) a) @7 m% n4 `' R
mcasp->regs->XGBLCTL |= GBLCTL_XHCLKRST_ON; ' p. ?! P$ u/ Z% s* n$ c: u
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XHCLKRST_ON ) != GBLCTL_XHCLKRST_ON );
& B! @9 y7 K' F8 u/ z# h mcasp->regs->RGBLCTL |= GBLCTL_RHCLKRST_ON;
1 t- U& f0 `. ]' E0 P& n7 y4 t7 p while ( ( mcasp->regs->RGBLCTL & GBLCTL_RHCLKRST_ON ) != GBLCTL_RHCLKRST_ON );
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mcasp->regs->XGBLCTL |= GBLCTL_XCLKRST_ON;
$ [( U' c$ s- W) i! h while ( ( mcasp->regs->XGBLCTL & GBLCTL_XCLKRST_ON ) != GBLCTL_XCLKRST_ON );+ @( n1 G; W4 r4 ^* ?6 x5 [
mcasp->regs->RGBLCTL |= GBLCTL_RCLKRST_ON;
; M, C& R& X: j- n while ( ( mcasp->regs->RGBLCTL & GBLCTL_RCLKRST_ON ) != GBLCTL_RCLKRST_ON );) n1 A# k$ I1 i4 |' I, T8 m
: h9 V4 o6 i: l& I mcasp->regs->XSTAT = 0x0000ffff; 0 D' b7 [/ `9 }' ?2 ?2 Z8 i
mcasp->regs->RSTAT = 0x0000ffff;
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+ `% V0 }% Y2 T2 ~5 x+ S mcasp->regs->XGBLCTL |= GBLCTL_XSRCLR_ON;
( h9 ~0 H& r2 _. z while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSRCLR_ON ) != GBLCTL_XSRCLR_ON );, o% x2 t0 I8 V. O
mcasp->regs->RGBLCTL |= GBLCTL_RSRCLR_ON; ' [6 l7 A! t/ m8 d' z
while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSRCLR_ON ) != GBLCTL_RSRCLR_ON );! F0 P5 c4 A% {5 Y7 O; _
7 h$ a8 P1 z0 `" b /* Write a 0, so that no underrun occurs after releasing the state machine */
x6 m! g% t# a5 o8 l) [; X, { mcasp->regs->XBUF5 = 0;
. t; h9 O% o& F% n/ `" p mcasp->regs->RBUF0 = 0;
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6 r) L, a9 C- q5 S% Y2 _& q mcasp->regs->XGBLCTL |= GBLCTL_XSMRST_ON; 1 Q1 P5 z' D+ ^# p/ X1 o
while ( ( mcasp->regs->XGBLCTL & GBLCTL_XSMRST_ON ) != GBLCTL_XSMRST_ON );
1 l# g9 {* U* \) F+ s Y) R mcasp->regs->RGBLCTL |= GBLCTL_RSMRST_ON;
8 g+ ]9 B% A3 L# I( Q' b7 }0 {' w while ( ( mcasp->regs->RGBLCTL & GBLCTL_RSMRST_ON ) != GBLCTL_RSMRST_ON );" b7 j* W$ t/ ~
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mcasp->regs->XGBLCTL |= GBLCTL_XFRST_ON;
$ F! \2 E0 z# {* K8 R; p while ( ( mcasp->regs->XGBLCTL & GBLCTL_XFRST_ON ) != GBLCTL_XFRST_ON );
. `1 `0 C' u% W mcasp->regs->RGBLCTL |= GBLCTL_RFRST_ON;
o1 {! ~2 I# R: B+ n7 R7 ~ while ( ( mcasp->regs->RGBLCTL & GBLCTL_RFRST_ON ) != GBLCTL_RFRST_ON );3 ] z3 V2 _+ F# ^+ f
- U) n% a( G4 I' S. _ CSR = 0x0000;# r9 t7 D/ H/ p4 [
INTC_INTMUX1 = 0x3d;
: x+ Y: t+ d3 w7 s7 K ISTP = (unsigned int)vectors;
7 a, R) c( @9 d ICR = 0xFFF0; # P# G. m& P: {/ L* Q8 P& ]
IER |= 0x12; * l G; X6 F( x! J
CSR |= 0x01;
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还有就是两个输入输出函数:
) F" T& _& y: i, W: X0 R& kvoid output_sample(Int32 out_data)
9 ?* |3 e% v) W8 S5 H* }1 j{
3 |% E: c8 C5 v/ y' J AIC31_data.uint = out_data; 2 k. d3 q; n9 q7 |
MCASP1_XBUF5_32BIT = AIC31_data.uint;5 w1 S0 ?$ C$ v
}
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Int32 input_sample(void)
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AIC31_data.uint = MCASP1_RBUF0_32BIT;
1 _+ H; e2 ~: e return (AIC31_data.uint);
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