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本帖最后由 liangws 于 2017-4-11 17:00 编辑 6 Q. W6 U) E2 [7 t2 Q3 v$ J
9 Z& r5 M' x( ~# a问题描述:( o, l, M# j1 C0 v* z; Z9 u! 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:
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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。& |8 n5 G7 C( h' N4 M# ?9 L- r
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测试结果如下:
3 x$ w; c: S4 N/ Z138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?6 p) P4 P' E/ B. {- S0 V9 O' o
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备注:
0 l2 ~% O8 c0 _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?
0 g1 i3 a& Y( ]6 L; t2、相关代码如下:
5 A( ~4 w; m8 n//UPP DMA缓冲大小512字节# s4 y( Q. D( s% V. o5 S) p! y9 D
#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% A2 T4 w. \2 }* Y8 J
#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT
2 N8 v# F1 T8 G#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)' r9 }" g% ~' q+ ?) a
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' t9 _: z- Z% `1 C* r C//upp接收、发送buffer; N$ p. F, H& a4 ^
#pragma DATA_ALIGN(upp_buffer_a, 8). S& U9 s' g) w3 N | k( U: Q
#pragma DATA_ALIGN(upp_buffer_b, 8); R* e2 B9 G, p" {% O2 C& a
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unsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];
6 G" n% e) F6 [: U. d6 Junsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];3 I/ l" ?' s, V J8 q
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static bool server_upp_data_recv(Server *server)
+ ]( L3 Z: p, G# l{
( G$ _: r6 z; x8 g if(server->upp_channel_a_recv == false) {' S) b3 M! L) d; f' O- S& p7 n
server_msg_send(server, APP_CMD_LOG, "upp recv: start");+ _4 }$ h7 t% ]( u
if(ListMP_empty(server->upp_recv_list_free) == FALSE) {
! A7 T3 q" ` |$ D. A server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");% W' ` f5 O+ U
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+ D, p" e3 I3 b* w9 R% H memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE);
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+ h5 C- [4 D6 N4 u4 m server->upp_channel_a_recv = true;//
- U! \0 [0 |0 p! L% H" ^. e" d server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);0 e, Q1 B- U; ~! c* r
server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;
6 k; G( a& R; P+ L- F; _ server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT;
6 n% u' p5 P7 q. L& a8 L server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//( Q" Y. c. D% J6 P! X/ j% W
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upp_error_count = 0;
4 ]0 e! r2 t, o6 b; f( L+ ^' L: X: K* _ upp_dmai_int_cut = 0;
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// fill in data 9 X0 H+ I0 R8 l) G) H9 I; ]
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);
4 G# z0 M8 U3 c# Z, p ]6 O server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");5 v' ~, N- Y+ `
}
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else{
3 K' R! M% B. c9 _+ I if (upp_dmai_int_cut > 0){- Z u0 a1 o* B9 X
DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);9 J" I% G: y( a, R$ i: A B
Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer);
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2 [. e: w3 P6 M, @ //copy data to upp_recv_list_busy
/ r+ `$ i8 Z; z6 ~ memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);
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//
: }- E8 b4 \+ l' k/ T/ D* ]) ? ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);" M! C: O. P2 x6 I
; [# ~- E, i0 R4 k+ v9 x //
. K- M: z# r& k7 S server->upp_channel_a_recv = false;//! A- P: T( N' p) ?7 F/ O; l+ P
# c, p T7 q; A- X server_msg_send(server, APP_CMD_LOG, "upp recv: success");1 |) k9 b# f# b" |7 n, y$ [" x
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}
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) ?; V/ J& {; b% O! j3 r+ D+ s return true;; j; x; A% s1 F, n6 B( R" g2 ?
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static bool server_upp_data_send(Server *server)
* ~ l6 r0 W' |0 v; M G. ^{
9 K* z7 P, i; g9 M' p. O if(ListMP_empty(server->upp_send_list_busy) == FALSE){
; D* [$ P4 e" W+ h/ w9 D: y( i" G* U) c DataNode *node = (DataNode *)ListMP_getTail(server->upp_send_list_busy);
2 g; B1 h8 e, }" ~" r, ] unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer);
" L: k; w3 F" s char tmp[128] ={0};+ \' ?" M. p7 `) F2 {
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server_msg_send(server, APP_CMD_LOG, "upp send: start");
$ R6 K- i8 w# G# c print_log(server, data, 64);! C J% x7 ~/ p& E* [2 m% m
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//
) q5 b8 P; e# u2 N7 d. E memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);
/ H, u% K1 ~4 B1 X memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);3 F* Q9 E' O8 C
print_log(server, upp_buffer_b, 64);
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+ H7 C' _1 ?& K5 Y' f4 u; B$ O server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b);
0 x! j3 B; m# F3 k2 t8 { server->transposeParB.LineCount = UPP_DMA_LINE_COUNT;
: x: K; H8 \$ W9 O4 e4 i+ m server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;
8 k. X3 H" R4 N' U server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;
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memset(tmp, 0, sizeof(tmp));
5 D }, J2 D$ Q7 d sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud",
& F1 W6 M3 p+ k* W sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);
- N* c. I+ q: y0 ~- |0 V6 G server_msg_send(server, APP_CMD_LOG, tmp);
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O2 P3 ^8 J5 D4 \+ X+ v" c8 \ upp_error_count = 0;8 j: n8 p* H c+ M+ ?
upp_dmaq_int_cut = 0;
: [& w/ i1 B( k# n p // fill in data 9 i2 }* K u' r- |! Z
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB);
) @# l T) X0 e% e; s8 B6 Z server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");3 A( z+ g1 W6 N( G
$ G: Y* c# p, v6 X // wait send success3 @ S E8 }( X
while (upp_dmaq_int_cut < 1 && upp_error_count == 0); 7 _1 Z' a2 I8 _+ S) [- F
* W, Y% j* ~- `+ T0 {* _ // make data node in free list ' E% I1 W) `1 I6 t5 `9 m c! E, `
ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);
) X) W% }7 ~4 Q& | server_msg_send(server, APP_CMD_LOG, "upp send: success");* E* {1 A2 z% q: f
}
, ~* Z8 g4 A" j* ^- w return true;
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