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本帖最后由 liangws 于 2017-4-11 17:00 编辑
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1 i2 c' x U# Y4 N8 I问题描述:% a6 M1 w# U5 A/ b( t
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:
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$ G+ m5 s" @2 R! I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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9 I6 C" q a% M; U0 s. W* G" P+ Y) Q4 |测试结果如下:
# G2 @7 d5 G8 S138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?
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备注:
' R& I. I7 h. l/ m/ g7 J% w4 C1、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?$ ^( M: L# {& Q6 ^9 u0 b3 |
2、相关代码如下:
: \& P9 O. r4 Y$ `' C/ Z//UPP DMA缓冲大小512字节2 p y B: [8 c ?3 b
#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7 |# C: t9 n% o! y6 p+ c
#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT
6 a# t0 ^ U5 ^& X8 K( ~#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)
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//upp接收、发送buffer
+ L* E# O" Z0 G# h ?#pragma DATA_ALIGN(upp_buffer_a, 8)
, S) ?1 @6 e; a% P2 c' O; e r8 t#pragma DATA_ALIGN(upp_buffer_b, 8)
; F8 @ x% S4 ?. G! y. n) x1 X5 ^9 E) i# e K" k+ {" }
unsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];* W5 x/ D3 j) p$ }7 a& E1 S8 c' J) `
unsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];: H4 t+ s0 B1 ] X, C
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y) s" V: Q c+ A0 ostatic bool server_upp_data_recv(Server *server) 3 d+ n* t% y* m
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if(server->upp_channel_a_recv == false) {# G. X5 g9 u' ~* k
server_msg_send(server, APP_CMD_LOG, "upp recv: start");
" O: W9 X3 g% b6 n if(ListMP_empty(server->upp_recv_list_free) == FALSE) {
. o6 U* ^4 z5 q- I) k; ]. Q! m server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");
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memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE);
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server->upp_channel_a_recv = true;//9 H7 F y# E: B _1 R0 e
server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);6 }: f9 w0 ]5 p) ]
server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;
7 \5 ]% i# g1 o2 _9 [) d server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT;
+ L$ n( g: g2 }2 u server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//
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upp_error_count = 0;7 ^3 W# U) w' F" J
upp_dmai_int_cut = 0;
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// fill in data
6 l+ q& N* l3 R7 m8 X uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);' O" [/ z' m0 j
server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");
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}
" ?, i3 o5 h$ N9 W3 U else{
8 P. g) l( X0 f5 G1 X$ g |, Z if (upp_dmai_int_cut > 0){/ W/ ]3 T* S/ P" k+ B0 X
DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);8 |5 ^# N# S8 x9 K) @
Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer);
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//copy data to upp_recv_list_busy
- h: u! l8 f' W memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);
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//0 n% V- x9 K* Z9 j: m" _
ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);4 W( Q' N+ e) E6 s9 k
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//5 `. }. q1 q$ _( Z, H P
server->upp_channel_a_recv = false;//
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O7 M8 w# C. _; N& _ server_msg_send(server, APP_CMD_LOG, "upp recv: success");
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( E/ x) d( m, I D return true;/ H& I! D2 v* E/ R* L$ V
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static bool server_upp_data_send(Server *server)/ J) `( ^7 T Q- L Z. A+ \
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if(ListMP_empty(server->upp_send_list_busy) == FALSE){
" Z5 W* B* s( p T( w- i3 V, z3 L DataNode *node = (DataNode *)ListMP_getTail(server->upp_send_list_busy);
1 C+ U2 B/ |; ~" G; m unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer);- l1 I4 @$ \3 U# E0 ]; P: Y
char tmp[128] ={0};
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1 [/ K4 P5 b0 V* T+ r& V server_msg_send(server, APP_CMD_LOG, "upp send: start");2 n% i, {+ {$ g0 T
print_log(server, data, 64);
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//
0 A8 O# O/ E! F0 N memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);
- ~3 Z2 c0 y0 ^" n memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);
# s$ [7 G0 W/ ~$ u& L print_log(server, upp_buffer_b, 64);
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# Y1 X: F9 q# K* ` server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b);
2 X: I c9 f% M- l server->transposeParB.LineCount = UPP_DMA_LINE_COUNT; ! K. i% W& c4 w) K* m& P
server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;
/ R9 ]. }$ L7 x8 j- p server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;
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! i/ k% ?1 r( `. W% ] memset(tmp, 0, sizeof(tmp));+ ~2 J% q$ z0 A" y- C
sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud", ; A2 R# N y- g4 ~! x
sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);" x7 ^) b8 t2 N3 }5 q* B% G u, v
server_msg_send(server, APP_CMD_LOG, tmp);
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+ z5 p# G2 _# T' C8 }/ f, ~" @ upp_error_count = 0;# }( h1 g4 K- f" X* H* G ^% j
upp_dmaq_int_cut = 0;
& @& w8 Q2 x; g& U0 f2 f; ^ // fill in data
# Z8 z9 ~ Q0 y- M uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB);
5 Y2 h* d+ e) x1 o: N server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");
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8 D4 v3 X; @. v8 Q; v // wait send success; n- }( A* f" e% M: H! E
while (upp_dmaq_int_cut < 1 && upp_error_count == 0); , Q- x# z1 c3 i+ h; I. u
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// make data node in free list
3 S P) L2 z- I% A ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);6 a4 t7 I3 Q/ r$ }( J/ `7 O5 y0 s
server_msg_send(server, APP_CMD_LOG, "upp send: success");0 A, z7 Z/ [ C# J
}
5 S6 s+ W2 ?7 P$ ]* L- T return true;
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