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本帖最后由 liangws 于 2017-4-11 17:00 编辑
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问题描述:3 g9 P" s0 I v8 M
在syslink模式下开发upp,在138端参考tl-upp_saver程序通过channel b发送数据到FPGA端,FPGA接收数据到FIFO,然后从FIFO端发送給138的upp channel A。fpga端程序通过仿真没有发现什么问题,具体方针波形如下:5 I, L/ x8 |& [
( s- L3 `2 p/ b7 N8 H7 \图中的UPP_CH0*对应于138的Channel b通道,UPP_CH1*对应于138的channela通道。
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测试结果如下:* _7 c1 ~2 R" Z$ J- a
138端发送512字节,要连续发送8次,即8*512字节,接收端才能收满一个512字节数据,这个可能是什么问题引起的?1 s# I1 B- E$ w5 _$ E# k% b! t' P
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备注:
0 y4 ~& v/ z: d2 @1、看了upp相关文档,绑定的窗口地址WindowAddress要8字节对齐,tl-upp_saver例程中只有发送端upp_buffer_b有8字节对齐,接收端没有8字节对齐,这个是否有问题?我上述问题是否由于这个引起?1 J% ]" S; ~3 g E2 Z9 D; j2 ]5 D
2、相关代码如下:5 v& r( X4 ?( u, B: @7 g
//UPP DMA缓冲大小512字节
9 c' x$ C& I* m1 T* i" T. T8 Z#define UPP_DMA_BYTE_COUNT (64) //DMA行字节数,每行64个字节,行的字节必须是64的整数倍
( f% u" E8 \& y% }0 ~& e#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT/ V5 y! R) E8 b6 _: k
#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)3 F4 \. r1 l# C, {; D3 Y
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, \+ C/ ^- b- f: V//upp接收、发送buffer) T( }2 k# } q, n
#pragma DATA_ALIGN(upp_buffer_a, 8)
( Z& Y% _8 s% z5 m% \9 p#pragma DATA_ALIGN(upp_buffer_b, 8)
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5 C& m; ]% F6 f8 r: C, ]1 Uunsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];
6 k, M0 l- A1 e1 Lunsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];
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static bool server_upp_data_recv(Server *server)
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if(server->upp_channel_a_recv == false) {
- J; ]* v2 V' z! I$ t# L; { server_msg_send(server, APP_CMD_LOG, "upp recv: start");) N) ~( e' y. k8 l t$ \. Q8 i
if(ListMP_empty(server->upp_recv_list_free) == FALSE) {) k) J6 H0 k+ }' R1 s! I1 A
server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");
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- Z/ u8 V4 ~/ G memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE);! U/ h, g5 K6 ~8 R6 _. w; R" T
' d4 a8 y t) t2 D: o; ? server->upp_channel_a_recv = true;/// G6 P* N1 p) d! v; {8 S2 n
server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);
/ L# m& O/ q- f+ K) e server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;
! _( \3 V4 u6 t1 w, X( M" u server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT;
, v4 @8 `% Y# s! s0 g: x server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//, L' x9 m7 I/ V1 \- x
) O1 |# M3 b/ V upp_error_count = 0;
; Z' t1 c2 R4 @7 e6 }+ g upp_dmai_int_cut = 0;
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// fill in data
g/ |: S9 d q p1 Y* a uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);- r2 C0 S) l" Q" @ E. G
server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");; F1 \2 t/ Q' U% K5 m b
}
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if (upp_dmai_int_cut > 0){' T" p5 ~& o3 W
DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);
" u) V: ^ z7 H- n0 J- w1 h Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer);
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# t% g; l& f B5 ? //copy data to upp_recv_list_busy
: p" Q! Q0 L v memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);
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//
3 J1 W$ E. E8 S6 ?5 @7 g ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);
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3 K: k( }: ^3 P) m+ j! b! B //" m( Y& w2 s n) L
server->upp_channel_a_recv = false;//
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server_msg_send(server, APP_CMD_LOG, "upp recv: success");! ~7 ~- }0 x* P2 l0 H
}
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return true;
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static bool server_upp_data_send(Server *server)! {( b7 L( w/ q8 u
{
+ B3 V7 a! ?% R( l if(ListMP_empty(server->upp_send_list_busy) == FALSE){
- G& K. @% E; T5 `) t7 [! V+ S DataNode *node = (DataNode *)ListMP_getTail(server->upp_send_list_busy);
& x7 h1 m$ E; b) c2 R5 C unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer);# K* B# b. }, [" f$ ]6 I
char tmp[128] ={0};8 I2 \9 A6 v$ R: W
, s/ W( M9 i1 a* s6 x server_msg_send(server, APP_CMD_LOG, "upp send: start");, k3 v5 O, o$ V# c ^5 \1 x
print_log(server, data, 64);, Q8 k7 p/ o; {+ M" |. V5 q% a
/ S/ W q p6 R# v! {# P$ y //
5 Q5 M- F/ B0 ^% I- x) m- { L memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);+ r0 R$ H* s" G# y
memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);
+ {$ ^: u; T/ n print_log(server, upp_buffer_b, 64);
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server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b); J5 e9 \* G. V6 E: @
server->transposeParB.LineCount = UPP_DMA_LINE_COUNT; . |, e9 O( s9 c- R4 Y3 {4 B9 c& _
server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;4 _, }( C* q6 f: {* C
server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;7 @# W' o1 ?: p' l* b2 J& ] ?
1 Z- J4 D7 [, c6 r memset(tmp, 0, sizeof(tmp));: w* j4 ^* d. [; }: k$ K1 [+ L M( A
sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud", ' R8 D0 R ~( c) F( G
sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);
7 M0 ]8 t$ u3 w$ l; Z @$ ` server_msg_send(server, APP_CMD_LOG, tmp);
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& ~. V6 h V; N+ E- c upp_error_count = 0;
. R" E! R4 |5 }: a) n. \, _* n upp_dmaq_int_cut = 0;/ N9 D/ U3 c/ `, p
// fill in data , |5 U! e h2 z# ]. ]2 N
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB); " v. _# h0 d# Q
server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");
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// wait send success
b* T# Y+ _8 l, \( n5 Z" _) i while (upp_dmaq_int_cut < 1 && upp_error_count == 0); 3 W% M& j% G0 A, l: a$ m3 t/ S; [# |
% X2 w- t1 ~1 }) Y* Y T // make data node in free list 2 C# P8 e w5 e" ^; G
ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);
5 w. \# E; Y/ P7 m' F( t6 j server_msg_send(server, APP_CMD_LOG, "upp send: success");# ]% j/ @0 R' E9 Y
}
, c5 K/ Y% ~& h0 ] return true;, V" r; W4 |3 D7 x6 N/ N( c" L
}
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