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使用mcsdk中的edma3lld库写的edma3驱动，在omapl138的dsp核运行，但是中断函数只能进去一次，路过的朋友帮忙看看，感谢万分。代码如下：+ s# j! {7 g9 m
#define PING_PONG_ACNT 1
/ v. h6 t" v1 }( M' s6 v! C2 ~3 U9 M#define PING_PONG_BCNT 8*32*40
3 I! I$ S4 l0 J7 ?: G//#define PING_PONG_BCNT 1 % h4 U0 I3 h ]1 F' [: f- W: \
#define PING_PONG_CCNT 1
9 b! G& V' K4 L#define MCASP_BASEADDR 0x01D000001 W8 J) V) a; J+ M" B
#define Mcasp_RXEVENTQUE (0u)
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4 E. r) H- L' ?3 z) a- O8 J7 X/* OPT Field specific defines */( V+ r! W8 Q7 J$ h/ k- C
#define OPT_SYNCDIM_SHIFT (0x00000002u)3 Z9 U2 ~; }& H' B" T
#define OPT_TCC_MASK (0x0003F000u)$ `, m2 d) B7 f7 R7 d1 M9 y- A
#define OPT_TCC_SHIFT (0x0000000Cu)1 z1 j$ @ M( _. {9 q
#define OPT_ITCINTEN_SHIFT (0x00000015u)
: Z: K4 K9 h8 g1 X. c6 n& w2 L8 P#define OPT_TCINTEN_SHIFT (0x00000014u)
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" {5 v. w2 ], c, ]5 jchar ping_buffer[PING_PONG_BCNT];7 @/ m: h7 t5 a- b
char pong_buffer[PING_PONG_BCNT];
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static void ys_edma3_init()
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EDMA3_DRV_PaRAMRegs paramSet = {0,0,0,0,0,0,0,0,0,0,0,0};2 D" \) r9 N0 K0 x8 l$ l% z2 K
EDMA3_DRV_Result result = EDMA3_DRV_SOK;5 l' Z5 f% Q5 `
EDMA3_DRV_Handle hEdma;% f. a- m. ?& K, |: {3 C
uint32_t chId = 0;
# c/ z% V) X* d8 q Z- _3 S uint32_t tcc = 0;
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print2arm("edma3 driver init...",0);( ]2 y! Z f& o& X! |' P
' k7 r% ?9 O, v) n0 m, N+ N; c hEdma = edma3init(0,&result);3 y2 F- s) u% \, w5 K9 S1 \
if(hEdma)
5 T% B( ~7 A9 G* q# Q2 v5 K {
7 ?9 P& I5 m* g- Z$ O+ W0 d print2arm("edma3init() Passed.",0);0 d" p4 @( J5 m3 ^9 n$ I0 R
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print2arm("edma3init() Failed.",0);% d. P5 A" ~) a* z- A
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if (result == EDMA3_DRV_SOK) D. l# F! Y1 }2 q6 M
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result = EDMA3_DRV_requestChannel (hEdma, &chId, &tcc,# z8 r, @% r/ F1 K* r2 F+ G+ y
(EDMA3_RM_EventQueue)0,
. ? A4 t2 {5 U4 { &edma3_isr, NULL);4 @* n4 Z' d' b. `2 ]
}
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1 D7 \) J0 e) a& H6 y- @ if(result == EDMA3_DRV_SOK)- a2 b1 ~( @ B5 M
{
3 R7 I% a. ~$ I paramSet.srcBIdx = 0;
9 Z# A6 N! L8 s! O a3 r9 E% m paramSet.destBIdx = 1;! m8 `# K+ w' v. i3 X! F8 k
paramSet.srcCIdx = 0;3 X8 F8 w( k4 p. E: P3 L
paramSet.destCIdx = 0;
1 ^, \2 e- U9 W' {) O$ X paramSet.aCnt = PING_PONG_ACNT;
% x5 ?$ [: m C, @( k9 c7 a0 ^: N paramSet.bCnt = PING_PONG_BCNT;. x4 S1 B- o3 M3 y S) _2 K( |
paramSet.cCnt = PING_PONG_CCNT;3 B/ F' X" X. [, T+ v- r
. g/ D2 ~. P7 F, g /* For AB-synchronized transfers, BCNTRLD is not used. */5 a8 g3 k1 }/ V: x: Q1 {
paramSet.bCntReload = PING_PONG_BCNT;
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/* Src in constant mode Dest in INCR modes */ A; z: P- `$ A) {. r& x
paramSet.opt &= 0xFFFFFFFDu;
! W/ ^8 N; `! \ //paramSet.opt &= 0xFFFFFFFCu;' d. o( H. \) b
2 D7 {' I/ U$ y% V4 b" M /* Program the TCC */
) w/ c, q6 R( S; { paramSet.opt |= ((tcc << OPT_TCC_SHIFT) & OPT_TCC_MASK);
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/* Enable Intermediate & Final transfer completion interrupt */
N/ r1 o: q% @2 o paramSet.opt |= (1 << OPT_ITCINTEN_SHIFT);: i' u9 P1 f- d
paramSet.opt |= (1 << OPT_TCINTEN_SHIFT);' S1 f/ D5 ?2 L: H$ g9 R& W
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/* AB Sync Transfer Mode */
: c: H) z6 b4 y3 n paramSet.opt |= (1 << OPT_SYNCDIM_SHIFT);* `, ^1 s8 r- J* o
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/* Program the source and dest addresses for master DMA channel */
+ h# o2 j7 m1 k. e paramSet.srcAddr = (uint32_t)(MCASP_BASEADDR+0X029C);
2 `% l# G/ [! @ paramSet.destAddr = (uint32_t)(ping_buffer);
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/* Write to the master DMA channel first. */8 k+ y) Z- J' Q
result = EDMA3_DRV_setPaRAM(hEdma, chId, ¶mSet);
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. c7 Z4 O! U. U7 C+ S result = EDMA3_DRV_enableTransfer(hEdma,chId,EDMA3_DRV_TRIG_MODE_EVENT);
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if(result == EDMA3_DRV_SOK)
8 k# N& t$ p, Z! `3 ?. w {
6 Z( w+ W, A5 Z0 H print2arm("edma3 driver init success.",0);1 n7 a# _9 I+ d2 T1 F/ U- I3 o) B+ ^
}
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EDMA3的配置就这个函数，是由MCASP接收事件触发EDMA3传输的，中断函数edma3_isr只能进去一次，请大家帮忙看看哪里有问题。。。
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发表于 2015-4-22 22:01:06
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