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本帖最后由 liangws 于 2017-4-11 17:00 编辑
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3 q/ o0 P4 R5 F# P0 @ I v问题描述:1 _8 u# m- R) K, ]" c* 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:! x* c4 n6 M3 P
% v# g$ D* ]" I1 Y5 U! 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。, ?) \2 L' u X/ s- f; p: J8 C0 g
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测试结果如下:
% i6 b2 n. j1 h" a& o138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 e- `2 i, F$ C8 ~- B! K
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备注:: d$ K$ Y$ c7 s1 j; h
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? g+ |0 v! \* n
2、相关代码如下:
2 B$ l; S* V6 e; O l: J$ K3 @//UPP DMA缓冲大小512字节
* E% j- a+ T: h" T4 s# y8 D" N, 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
" G0 ?, t; W5 |- @: B#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT, w4 N ]: ]2 ^; D
#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)( r+ E: K1 J: g4 o3 ^
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0 B6 X6 }/ I* |. s' y//upp接收、发送buffer
( L4 c/ S# v' L: q. U: ?#pragma DATA_ALIGN(upp_buffer_a, 8)' C1 n2 _* z/ V6 d3 n C0 f: [
#pragma DATA_ALIGN(upp_buffer_b, 8)
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unsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];3 k8 g" t5 J* k+ ]
unsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];6 j1 ^( n# B+ @+ l
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static bool server_upp_data_recv(Server *server)
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& f" `0 T, R; Z: } if(server->upp_channel_a_recv == false) {6 ^7 R8 u1 s" d( x' Z; o
server_msg_send(server, APP_CMD_LOG, "upp recv: start");9 L. Y% u' R; M4 c* u1 _
if(ListMP_empty(server->upp_recv_list_free) == FALSE) {% Y g& ~( T5 ^
server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");
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1 O% S" Z. C6 Z8 k5 M$ K( y# U memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE);
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server->upp_channel_a_recv = true;// `4 p [5 W7 E6 L
server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);
4 E# ~. x9 w- C: U# K5 c9 b server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;- X" p+ ?% j: r: b& v
server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT;, q. C, R2 R6 Z2 \
server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//+ D0 M! a, \* \2 k: N) ?5 G" u
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upp_error_count = 0;
. I# D5 o8 U& L" |. a, g, T upp_dmai_int_cut = 0;
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// fill in data ' h, z( B E( `+ Q6 Z9 g
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);
7 {. k7 G; D' F9 Z; O/ V2 h server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");
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else{5 M. s8 M0 u D7 r* `: w& T" r
if (upp_dmai_int_cut > 0){& A6 x, X6 Q) l# ~+ y. A' [# \! U
DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);2 }- Q& r2 O% v- X
Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer);( B- w/ k8 O) t/ V! w/ M
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K" F! d' j+ D7 g0 s) { //copy data to upp_recv_list_busy+ A" _( h0 [# P8 z0 l! p3 ^
memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);/ k" ~4 {( x8 Y
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//
. O8 o! w9 {5 h" R9 w9 Y/ W ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);& H2 I- a! |& D" Q. V2 H" i
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//
6 a4 a/ [' }1 b& t+ [ server->upp_channel_a_recv = false;//8 ]9 ?7 w* v5 r% U* O
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server_msg_send(server, APP_CMD_LOG, "upp recv: success");( S2 y3 t2 M5 I
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}
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( o% q2 l. L* m6 b' L return true;
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static bool server_upp_data_send(Server *server)* E) G# m5 N9 `* Q
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if(ListMP_empty(server->upp_send_list_busy) == FALSE){ m1 K9 N, V' ?0 L" c% t
DataNode *node = (DataNode *)ListMP_getTail(server->upp_send_list_busy);
6 f/ ~, f& z9 }5 \ unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer);
0 C5 C g* H" |% D$ s* @/ p char tmp[128] ={0};
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server_msg_send(server, APP_CMD_LOG, "upp send: start");
+ q* p, z! \' I) o print_log(server, data, 64); _8 f/ ^* L+ E: l* D$ _
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//
; W8 c% @& D9 N3 I, K memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);1 w* K$ {# K- ?9 l
memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);+ _ J* x' Y& G8 ~8 }& x6 L8 J) x
print_log(server, upp_buffer_b, 64);
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server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b);, j3 ?! N% I$ N# Y- d
server->transposeParB.LineCount = UPP_DMA_LINE_COUNT;
2 e4 x& T3 F0 o# ~4 v0 {+ r; Z% D9 } server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;8 d G9 R/ ?+ z; ?4 @$ m' l$ v
server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;
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memset(tmp, 0, sizeof(tmp));
7 y: f: z6 g- ~ sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud",
2 {( ^' Q* z6 R6 v1 I: y; R) S7 [4 A sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);6 q* k3 O; M7 C2 W5 n& z+ |0 i
server_msg_send(server, APP_CMD_LOG, tmp);
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. j4 d/ L) x5 }9 D( Q upp_error_count = 0;
6 m0 M( T' O5 \/ W) Y" b$ r upp_dmaq_int_cut = 0;
; U- ~8 n# d7 N( r8 A/ j; \2 k; \ // fill in data ' _! B: h3 K& _& t4 L2 F
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB); 2 ]) k- b, S$ \' g3 b1 T
server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");8 I: G* b! _% L3 k1 A0 c; o, V
( c. Q8 e! T2 U( W) ^" J( H7 v- R8 f // wait send success
! b! P; Z; H. Y! W6 |. ] while (upp_dmaq_int_cut < 1 && upp_error_count == 0);
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// make data node in free list
. I/ w9 a7 u8 m$ r$ T9 h ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);
* q s* d4 j6 m$ @, c server_msg_send(server, APP_CMD_LOG, "upp send: success");
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; Q" }2 Q% x( m( z return true;
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