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本帖最后由 liangws 于 2017-4-11 17:00 编辑 0 y7 Y3 r9 |* H2 E0 z4 q
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问题描述:
+ U# e, \6 u) A% j! ]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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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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2 A# ^4 u6 w6 J# _. ?, k- W测试结果如下:
: R, T4 d4 a* I3 r7 ?& R138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?8 f% f. }+ }/ w6 l
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# J& Z' m5 S' p$ s: m备注:; Q' U2 H& t2 M V4 ]* U
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?
7 S/ d$ M2 {' @% F5 Z& |. z2、相关代码如下:
, ^, F1 X3 P$ H+ o4 o//UPP DMA缓冲大小512字节
3 o; [& W& U J m6 T6 r#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" i% o/ t" t6 Y6 B0 ~1 |
#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT/ x3 G: c# X1 `1 H- e
#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)
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//upp接收、发送buffer
) R7 {2 W, O" |9 c R+ i#pragma DATA_ALIGN(upp_buffer_a, 8), f9 I7 I6 n% C) {5 I
#pragma DATA_ALIGN(upp_buffer_b, 8)
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# y' J$ h. Q( nunsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];* a R6 y. A5 P" w# W
unsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];
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* T. e4 G, Z+ p- w. l$ Vstatic bool server_upp_data_recv(Server *server)
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# o$ L- Y) V2 `. r4 g. k; R if(server->upp_channel_a_recv == false) {
- p. @2 i* q' X* ]. b server_msg_send(server, APP_CMD_LOG, "upp recv: start");
, i0 `8 F% m P8 f" n* t7 q if(ListMP_empty(server->upp_recv_list_free) == FALSE) {
9 |0 q; e. T/ u$ N9 P server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");" \6 e4 F* G1 A: w
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memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE);
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+ b- l& ~; {. R server->upp_channel_a_recv = true;//$ ]; c. t( s! v( {( |4 G) D
server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);( J2 X/ O o" w3 s
server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;6 l: Y% Q" J4 g& f: A9 @3 Y
server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT; z( e' {; N$ B6 P: P0 a: ^6 a
server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//& I& F" m- z% |% D1 [$ I
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upp_error_count = 0;
9 v. k6 a t/ F- i- | upp_dmai_int_cut = 0;$ U2 U2 @& N: K9 \3 O& x2 W
, I/ n" W: T c( p. O1 z! R // fill in data # T1 @+ |3 ], |/ S; A/ P
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);
5 X% k; L, c1 \! E: w) m% b( k9 Q* J server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");! C5 i; t& W2 e t$ w( F2 @* d
}
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) b4 `( W+ g$ `) Z' V V" k else{
m+ C( _) X& R( {( G; k3 R7 p if (upp_dmai_int_cut > 0){
1 y0 Q) k, D) g$ p7 s8 @" S DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);
1 b0 X6 u2 n- }% w/ o Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer); z1 F- }. o2 U
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! q/ p5 q- n! O' N0 r1 \4 H //copy data to upp_recv_list_busy# t+ t( H) O8 q5 J8 K$ ?! h
memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);* l9 q! v; L0 R% o6 i/ q4 R0 u1 n
Y3 B6 \ K# Q/ t1 l //
5 D* L& v) c( d' J ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);
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//- ^8 \& u |1 [1 Y1 I( g; ~
server->upp_channel_a_recv = false;//
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3 _6 F* L* P, V7 U H server_msg_send(server, APP_CMD_LOG, "upp recv: success");
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return true;" d" U6 r, d- |# D3 K; w
}
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( j$ X2 W1 H/ c' J' H A* Qstatic bool server_upp_data_send(Server *server)8 M9 I4 F2 h9 Y3 H# c5 L
{
( ]$ E4 q2 p3 U9 M+ \+ B if(ListMP_empty(server->upp_send_list_busy) == FALSE){; @- M" |; C' L- _. m
DataNode *node = (DataNode *)ListMP_getTail(server->upp_send_list_busy);2 ~+ [' @! h2 X; S/ s1 a) ~0 m7 v
unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer); Z# G, k# J) c4 u6 P! O9 C
char tmp[128] ={0};
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- l3 I5 s. K& t% h server_msg_send(server, APP_CMD_LOG, "upp send: start");: ]5 a! W5 ^; H0 H w0 {
print_log(server, data, 64);4 p& U8 D$ P! V. q- b3 v) N) ?5 }: @
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//
8 G a, Q" J5 u( y8 l0 z memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);
+ G+ y1 t( ?: ^4 j- Z( s/ `- }6 a memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);
: p3 q4 v1 ?8 L% f print_log(server, upp_buffer_b, 64);
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server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b);: q* s, x& ~; I# [. }% g) u) s
server->transposeParB.LineCount = UPP_DMA_LINE_COUNT;
/ L8 d& H2 Q& O7 K4 [6 B9 ~$ @1 } server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;$ M0 R5 z$ W, i+ Y3 I q2 {
server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;- d& P8 ?9 C1 f5 t. t0 J @5 _; U
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memset(tmp, 0, sizeof(tmp));
: {! p3 H+ S5 z z3 L$ ? sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud", 7 F% z/ _) d+ E1 n
sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);
) g& P8 F! c2 }4 Z C server_msg_send(server, APP_CMD_LOG, tmp);7 v& f2 E; o8 @8 ~
/ w6 ~3 @* P/ n, i# @) a upp_error_count = 0;; D$ Y6 |! [9 j9 S, u# k6 G
upp_dmaq_int_cut = 0;
) k4 n1 \7 u4 w( D- @/ K // fill in data 6 _0 [1 l0 c. V/ P; Q1 f
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB);
$ S' r* ~7 Q9 n server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");
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// wait send success3 }3 d& n1 n4 d! w) z
while (upp_dmaq_int_cut < 1 && upp_error_count == 0);
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// make data node in free list $ [* P5 [; M) w! V
ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);
% C! A1 t: z3 w2 j) t4 c server_msg_send(server, APP_CMD_LOG, "upp send: success");
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7 t" c; h4 W7 T return true;# t& a6 @' b' d2 F; Z
}
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