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本帖最后由 liangws 于 2017-4-11 17:00 编辑 9 K \) p. X; V* ^- p
9 u g' g& b4 t3 i问题描述:+ ~- z0 v) ~& K$ k' \4 d8 O
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:' c: _' |+ b& F9 I! m+ ^
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图中的UPP_CH0*对应于138的Channel b通道,UPP_CH1*对应于138的channela通道。 y, C" A& C) H% h& F2 y$ ?) m1 S
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测试结果如下:
8 R: m- h. E1 j, _, W4 ]- X3 U138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?3 r D7 k$ l' q5 r* A @
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备注:. Z8 I/ y+ A$ S/ e3 X3 o0 j9 J* D
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?* C) f V, w! M# Y- ` Z
2、相关代码如下:6 M) s8 Y, D% }" o) K
//UPP DMA缓冲大小512字节
' G- q/ s: x3 C. E4 r2 g! w#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, J" \$ m1 y7 s, d) @
#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT
$ ~7 f5 q3 q, [/ I6 h) L" J# R#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)9 z0 G+ U% ]! d' Q! O h3 X
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, T, n- s7 a; A }//upp接收、发送buffer# V8 {* T( W+ M9 ~4 ~) X$ o* F( f
#pragma DATA_ALIGN(upp_buffer_a, 8)8 @, s2 |% e) v9 d) Y; F% z* z
#pragma DATA_ALIGN(upp_buffer_b, 8)
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unsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];! j( l* G' w- g6 A
unsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];
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6 f( j1 i' I) K0 [ Zstatic bool server_upp_data_recv(Server *server)
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S: b4 P$ x$ T1 q0 ?$ { if(server->upp_channel_a_recv == false) {7 E3 ?, I9 n1 |2 c
server_msg_send(server, APP_CMD_LOG, "upp recv: start");
5 T" ]4 {, {2 w- m& L if(ListMP_empty(server->upp_recv_list_free) == FALSE) {8 X! v9 u/ \6 k+ T
server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");/ P3 l% ^: _+ y9 N: @) f& ~4 A' A
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memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE); g) D% v- ~1 _5 ?, [4 I- u' t
' B8 b4 f% Q& Y _ `% k# L& R server->upp_channel_a_recv = true;//
0 D6 V o6 x" m% {# X+ U Q server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);
- u& x) Q4 p) U5 n3 A; c$ B server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;
/ C9 M7 C5 `2 @* I7 ~/ @$ _) T! g, w& h' S server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT;. f: a# s, S3 z
server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//
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upp_error_count = 0;, w, }/ @: u7 W e% x
upp_dmai_int_cut = 0;
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! H; _0 I$ o* a0 n // fill in data 5 v+ d3 ^4 B Q, `
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);: M4 u, w' ~+ W6 M% E0 t3 A
server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");
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else{
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) g1 \& v8 @# ^9 W$ x6 ^ DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);
& R6 D$ e$ D0 Z4 f& W6 ? Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer);
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//copy data to upp_recv_list_busy
3 b5 |4 U) F8 x+ S$ V memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);
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1 ~2 v6 Y# ?# K% J$ S //
# @6 d4 ^* M- j0 ^: K% R ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);
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server->upp_channel_a_recv = false;//
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server_msg_send(server, APP_CMD_LOG, "upp recv: success");$ P6 ^; N4 [, X9 g
}
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return true;2 B! [: P0 Q+ m0 R- Q$ N
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3 W* s4 d0 X6 Mstatic bool server_upp_data_send(Server *server)
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if(ListMP_empty(server->upp_send_list_busy) == FALSE){$ o, d. m) a- |4 L) P
DataNode *node = (DataNode *)ListMP_getTail(server->upp_send_list_busy);
; G! Y! @6 z9 U. L5 q7 U1 } unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer);& o& c" [7 D0 _# N. m
char tmp[128] ={0};
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server_msg_send(server, APP_CMD_LOG, "upp send: start");4 C# S2 q5 ~' Z% d$ D1 p
print_log(server, data, 64);
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//# B+ E" z7 Q. s2 e# |
memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);( @ t1 E# G2 V1 V% l9 h
memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);6 p& P$ h ]4 g- V: d/ n6 u
print_log(server, upp_buffer_b, 64);% e) m2 ^8 k- D7 O- `* b6 L c; ?; B
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server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b);
0 H( d2 M. u9 \2 m" m( G! {( r) O server->transposeParB.LineCount = UPP_DMA_LINE_COUNT;
$ F6 J# ^. B, Z' q server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;
! c! D4 G; s' k* H1 e server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;
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0 q* ~: l, T P9 n4 d8 |) s# s memset(tmp, 0, sizeof(tmp));2 }: b ]; U; q9 |. U
sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud", + G+ ]! o, x! l
sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);
: q. `: x: L" q server_msg_send(server, APP_CMD_LOG, tmp);
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upp_error_count = 0; I$ b9 P1 h% q" ~
upp_dmaq_int_cut = 0;$ h3 k5 p$ `) I& O7 c
// fill in data 8 f7 t& U" {6 ]+ O' ?8 u) Y
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB);
9 {" k& b* R+ _) X" y server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");
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// wait send success# W6 L3 K7 C& Y1 P( ?+ w$ G
while (upp_dmaq_int_cut < 1 && upp_error_count == 0);
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; K" f! N, I- {2 `$ G // make data node in free list
; }( W* v0 T4 ~! Z! p) B ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);% c' b; I$ T6 l! O" {
server_msg_send(server, APP_CMD_LOG, "upp send: success");
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return true;
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