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本帖最后由 liangws 于 2017-4-11 17:00 编辑
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% R- ~4 N `( T: F+ p0 F" W问题描述:
8 ^- J |1 S" ^3 @/ {; R* `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:7 a# l" y9 b9 u; p- g& [) D: U
9 X& D# q3 Q! |- B+ X7 n8 ~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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1 r/ z) X7 E; h8 j测试结果如下:
- }2 ^" u) g* K5 S1 s2 j& m138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:
& o( @+ Y2 ^: S7 C: A' `# ~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 {6 ]4 p7 c8 u: D; k2、相关代码如下:8 M5 i9 ~3 ^( p) t U9 y2 k" y
//UPP DMA缓冲大小512字节' o5 _0 }6 b% t) C" V+ J) a9 p
#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
4 e! u, w) @/ ]; N! R7 Y2 k#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT
/ q2 M/ |; P/ ~! z#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)
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//upp接收、发送buffer$ N4 }, T, P" L, c$ \% S
#pragma DATA_ALIGN(upp_buffer_a, 8)
L1 A0 Y# r. I1 z7 _. d( K#pragma DATA_ALIGN(upp_buffer_b, 8)
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unsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];2 x/ s$ d) d3 |9 E% Q" y% _
unsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];* U, Y7 J; y: }4 c- O6 d1 z, O/ o
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; o: l! @+ R Astatic bool server_upp_data_recv(Server *server)
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if(server->upp_channel_a_recv == false) {( C2 {: c) U9 r: H5 @/ X0 p( X* K" {
server_msg_send(server, APP_CMD_LOG, "upp recv: start");( ?+ E& M# U8 Z9 m5 e/ O
if(ListMP_empty(server->upp_recv_list_free) == FALSE) {/ c- B) d, E; u5 R t9 B9 M
server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");# U" l! u. k) P/ a' u
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" B( S" X" Z, U- Z; f2 P memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE);
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server->upp_channel_a_recv = true;//
, k) y n' W5 B4 o server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);
# @( n+ f: Z, A: Z' \8 p server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;
9 X2 u0 B% K' Z' |- b. M6 W server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT;
, z5 D; \: p% P/ K, C server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//. d( G3 z# l$ V3 `* \" R/ p4 @! W1 ~1 m
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upp_error_count = 0;
1 n/ t) F- Y( u* A3 {/ [: _ upp_dmai_int_cut = 0;7 c5 G0 U& z! E3 n, l9 L' i. H/ ?2 f
8 l( }% _% J. G // fill in data . d1 b! V* }/ }
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);& j5 L' s: ~- F) k$ C& g z, \
server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");3 A2 h \8 N. X# a8 a& }
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}
4 Y* Q6 Y' Z5 |' B else{
1 m% @/ T/ W) l; |' ]( s if (upp_dmai_int_cut > 0){3 z6 M* n" k% Q Z- a& w$ d3 @
DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);+ {8 Y; v+ @- x R
Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer);7 F+ ?8 n& F( D# N0 M
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. P" I! W# v- _ I //copy data to upp_recv_list_busy h( U! l; |2 P- ^# d9 o" W% z/ _. c
memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);5 w1 t! t- g. [2 _2 e
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//
$ u* m, c2 c L, W/ O% _2 k& w# A) I ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);: B$ C( W q m
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//
' Q, R& Y! f3 s9 O9 U! f server->upp_channel_a_recv = false;//$ S3 k1 ?3 n. N" z+ x
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server_msg_send(server, APP_CMD_LOG, "upp recv: success");3 |6 E* d" Z% p/ `, y3 t
}
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return true;
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static bool server_upp_data_send(Server *server)6 e. x8 C K5 y. D
{
" y) Z/ v- z; e4 d' b" G8 w if(ListMP_empty(server->upp_send_list_busy) == FALSE){
4 g$ |( ]: Z6 ^/ H( S6 B5 X& R) L DataNode *node = (DataNode *)ListMP_getTail(server->upp_send_list_busy);
( a' C [- U/ F/ {& @0 K t9 F unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer);5 K8 y2 _& X6 Z- l; \7 c. F8 k
char tmp[128] ={0};
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server_msg_send(server, APP_CMD_LOG, "upp send: start");9 z; Z+ F0 j& R; U& X5 q
print_log(server, data, 64);$ E) C8 y: I+ Y' j' ?
( I" d# m4 o6 y( y2 B //
# o' W3 v( b8 A; S6 Y, ^' \ memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);
- y- ^, p1 a5 K& j$ @. K3 a memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);
5 K$ T; L- B/ s print_log(server, upp_buffer_b, 64);2 T* C5 w) Z) x" A
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server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b);
5 y) c+ a1 Q D* j$ F/ c server->transposeParB.LineCount = UPP_DMA_LINE_COUNT;
- y+ a! L" m6 y9 b server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;8 ?, v- t5 X$ ?9 } X' X
server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;
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! B" X2 M4 t# O" B9 D% x* ` memset(tmp, 0, sizeof(tmp));
" x: f$ v( V/ Q! I! _8 @* v+ V sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud", & S0 x2 N$ h" V( A$ t6 K+ E& J
sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);
8 a @9 D" W* a+ _ server_msg_send(server, APP_CMD_LOG, tmp);; O) x" E! y3 s3 J
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upp_error_count = 0;7 d" P5 j# f( t& h. ^& C: N
upp_dmaq_int_cut = 0;$ k9 A' A6 Q J5 U
// fill in data
! [& C; g, T. Z% H" F. H. S7 D+ W( N uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB); 3 A1 V) q: }9 \8 A! Y' ^' x
server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");! R1 j; J7 y3 P+ s
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// wait send success
5 K* v8 e% g' Y2 @6 P while (upp_dmaq_int_cut < 1 && upp_error_count == 0); % l7 o4 r, N* z$ Z3 Z2 T. @6 M
6 r7 s5 [+ B; N9 ?: K // make data node in free list 9 I1 N6 ]6 t. a% t. i2 N
ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);6 ^' \ S& @/ N
server_msg_send(server, APP_CMD_LOG, "upp send: success");
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& R( z: F4 _! u Y: I9 ]/ Q* ~$ r Y return true;
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