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本帖最后由 liangws 于 2017-4-11 17:00 编辑
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' _1 O! {7 T' `6 s4 y7 u1 A问题描述:) u" D' A) F& Y
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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9 ~9 K4 @# m& m3 F" o8 D) @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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测试结果如下:" @, S1 q9 t5 n/ T8 K( \# X
138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?% d6 r/ V6 x& N! m3 ?& b5 y
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, t9 e# c2 ]1 C( D7 a. ^# U备注:
# z* j, G5 s: ^# Z, s- _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?* y/ {; T' f# c% p5 T/ w
2、相关代码如下:* C7 L [6 P# U) H7 d; l
//UPP DMA缓冲大小512字节
# z, c: S) C* \8 K) 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' z: G! q ]# \" q; ^6 D Z& F% P
#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT
* g. U' W1 D; a1 S, K) y% b#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)4 p# |3 i9 T$ ]1 M; a( g8 u
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//upp接收、发送buffer3 W/ n+ M( j9 k
#pragma DATA_ALIGN(upp_buffer_a, 8)2 m. E0 P9 l, o7 p+ H: Y2 `/ I
#pragma DATA_ALIGN(upp_buffer_b, 8)+ L& k; e& K1 R+ V! v$ F
& A4 _$ r7 v1 k& t5 ]8 A7 `! G n0 kunsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];
# L; y6 Y0 Q$ P X0 _unsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];' v1 l2 k! V$ ]1 [+ y( B+ q
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; n* P% F, `$ R& M1 jstatic bool server_upp_data_recv(Server *server) * }0 {4 E2 k# }$ J+ u
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if(server->upp_channel_a_recv == false) {
* t2 ]& J2 A$ N8 A& A3 r server_msg_send(server, APP_CMD_LOG, "upp recv: start");! Z4 A8 R/ J9 R6 W# y2 Y( n+ V4 }
if(ListMP_empty(server->upp_recv_list_free) == FALSE) {& O8 q- m, S8 Y' v
server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");; h1 | _, R$ F4 j
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5 [. {7 T$ u# r9 v memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE);. w# \6 p+ Y- |' x; K: w
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server->upp_channel_a_recv = true;// ^2 p5 f' m. \$ X7 B+ _% F+ r
server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);. `' d/ Z" Y6 _) M
server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;
/ G% m. I( k6 x; |8 Y4 {' o server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT;5 l! h5 F9 w- q
server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//, G5 U& b1 o( M4 A; r% L
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upp_error_count = 0;3 q' E$ i5 V2 h
upp_dmai_int_cut = 0;* U3 a9 U+ x/ C# Q: P' t
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// fill in data ( s, @6 Z! { U2 K D. R7 Z8 q
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);7 u/ z8 b6 Z% p" o L2 I
server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");! B5 B" ]: D8 Z# a
}
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else{
; @3 ?1 V9 d" f+ ~ if (upp_dmai_int_cut > 0){
. w& w; l/ h4 `" j4 e3 u1 E8 F DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);
& J4 H2 {0 `/ i5 j Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer);6 e" c: z3 J0 w- D
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# }. X9 M( m4 Y0 ` //copy data to upp_recv_list_busy
' J: Z) U9 z/ P; M6 ^ F memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);
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//
, K+ n: f! M5 p0 Y' r' i- a ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);
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8 J* E% s0 D [ I+ p //
) u' X5 _, v9 _ server->upp_channel_a_recv = false;//6 L1 R1 z; u% d X' M4 G# n3 \0 D
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server_msg_send(server, APP_CMD_LOG, "upp recv: success");
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}
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: N& v7 g" j4 t0 e7 f x return true;1 e( t7 F( @# z( I
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static bool server_upp_data_send(Server *server)0 p( F/ Y3 g8 K+ c4 v" {
{
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DataNode *node = (DataNode *)ListMP_getTail(server->upp_send_list_busy);( \) h! H H" @/ j! o7 J( Z/ c
unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer);
6 H( D* \9 _ j- H3 t char tmp[128] ={0};% h& s6 J% s h) Q! ?
" Q0 [9 q0 V1 U. A/ d2 I server_msg_send(server, APP_CMD_LOG, "upp send: start");
6 q& R+ t& Y! H& M2 ^5 W1 N. m print_log(server, data, 64);
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//
/ p: R8 n p2 H memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);0 [4 a* g- }8 S' u7 W+ J; _
memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);
3 V+ `: c+ y8 y( E, _8 N7 D print_log(server, upp_buffer_b, 64);; A! {$ @) R6 b6 t) N, u- C) o
+ T$ Y3 h' {8 M server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b);( S& i2 w: n, t I3 A, i( n; j$ `
server->transposeParB.LineCount = UPP_DMA_LINE_COUNT; 6 t) P" F Q: L y& ?; M9 n1 @, q
server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;
6 K. B' y( F# ?9 Q: M6 u4 R) b server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;+ Z9 `# x( z5 E5 V2 [% w5 e
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memset(tmp, 0, sizeof(tmp));2 ~' w4 ?$ A2 U) s. D- u4 P# O( W
sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud", , \% j( _ u' \* a7 V% ^! r3 f2 X
sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);- W' V% Z3 A3 V* c# i
server_msg_send(server, APP_CMD_LOG, tmp);/ n) H w* v% a: [+ l
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upp_error_count = 0;8 ~9 j/ p0 s6 \/ Y
upp_dmaq_int_cut = 0;" A# G# [7 v6 K) Z Q# J5 k
// fill in data ! u* B/ l( N2 ?- \0 c5 [
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB); k9 P! Q" Z+ ^
server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");/ I3 ^9 S' z ~- ?
' y ?+ E; u' |3 ^) K. t/ ~ // wait send success7 J& C+ Q* m7 U$ [
while (upp_dmaq_int_cut < 1 && upp_error_count == 0);
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+ R/ C9 x$ R9 e2 c // make data node in free list
' ^( e. w2 Y4 }6 K2 k/ j5 H1 K; Q ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);
9 {+ g5 ^& g# O: m2 \ server_msg_send(server, APP_CMD_LOG, "upp send: success");
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" X5 U$ ]/ ] g return true;- M! u5 p( ]; W1 \1 |
}
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