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功能源码/ [- q9 L+ }# ?
& ~! B9 V+ q6 I6 F# b//----------------------------------------------------------------------------+ S$ M9 @7 X2 B" U
// tft_lcd - module1 c0 _7 E U" D0 _
//----------------------------------------------------------------------------
& A& R# ^- v$ O5 S' n// IMPORTANT:
3 M" d1 j0 S5 z; s$ ^/ b; j// DO NOT MODIFY THIS FILE EXCEPT IN THE DESIGNATED SECTIONS. l9 i, q* m Y ?8 H Z5 D
//
4 ~$ }5 f0 n& @8 r9 @$ ]" p0 g/ P2 I// SEARCH FOR --USER TO DETERMINE WHERE CHANGES ARE ALLOWED.
9 M8 _0 f9 J" R4 ^2 [- V7 x1 u* V5 T//
2 y7 m, _9 ]& `% O p5 Y8 m// TYPICALLY, THE ONLY ACCEPTABLE CHANGES INVOLVE ADDING NEW
, t. m E' H% t, i+ K* A// PORTS AND GENERICS THAT GET PASSED THROUGH TO THE INSTANTIATION
u v7 [8 @% O& D// OF THE USER_LOGIC ENTITY.4 C5 @' F7 _: j5 u* }* R
//----------------------------------------------------------------------------. S$ c6 L& Q$ ^5 X
//7 e* n z8 f0 N7 L! E
// ***************************************************************************" I- n( T, V9 Z8 l) m- C1 h
// ** Copyright (c) 1995-2012 Xilinx, Inc. All rights reserved. **5 { ]( l' e5 Z) |/ v: }5 N8 E3 \& O
// ** **
2 p) d* r X2 g+ c2 Y- R// ** Xilinx, Inc. **" k4 b8 ^/ i% P7 q
// ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" **, R; d) u: Q; u3 S- C/ u
// ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND **& Y* v5 R, w& V: E" Q
// ** SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE, **
7 N$ n% R/ \, P" J7 Y// ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, **
1 i6 k; d2 d/ i" N% _// ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION **8 ` s( x& p3 r! B
// ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT, **7 Z/ H2 H$ l$ F% ^: `
// ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE **3 ^) C9 k3 q- r* R
// ** FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY **
) g( K h9 S1 A% o+ f5 u I// ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE **" w! H, T) L* L7 U
// ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR **" {4 x/ ^. R; R: U
// ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF ** g7 {. i7 T5 ^% s# t. s
// ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS **' I8 q7 F& O( u* h) {
// ** FOR A PARTICULAR PURPOSE. **
. Z0 d( d$ I- o3 q8 H$ R// ** *** C+ t' ~" u7 ~- [
// ***************************************************************************) n# ]* C$ }; b, m+ A. f
//! J3 v* ^% f; w6 U8 Q
//----------------------------------------------------------------------------
3 T* S4 d% W' Q1 x2 L1 u// Filename: tft_lcd" W- v, P P$ v
// Version: 1.00.a7 T& B: t/ w8 o% _6 j$ g; Q9 @
// Description: Example Axi Streaming core (Verilog).
+ u P( P2 y( M# E. b; a// Date: Thu Oct 24 17:52:44 2019 (by Create and Import Peripheral Wizard): x- V7 S# o6 d
// Verilog Standard: Verilog-20012 }3 ~1 O: Q# Q. S/ j$ @8 A& y$ H) N
//----------------------------------------------------------------------------# _) h+ b n+ J. U( b/ G: k
// Naming Conventions:
! h$ o' E& g9 t: ~1 R// active low signals: "*_n"
8 A0 r" O" v3 S// clock signals: "clk", "clk_div#", "clk_#x"
" }. I+ w! x' M7 [// reset signals: "rst", "rst_n": M& E& U, L d/ X! x
// generics: "C_*"
$ L u; {, F. l8 Y& H) l5 r// user defined types: "*_TYPE"" {/ N) L1 h6 v3 T' S
// state machine next state: "*_ns"
- o* K, k) }1 _1 H2 j// state machine current state: "*_cs"( N5 ~0 d1 Z" h9 T6 T2 W8 C
// combinatorial signals: "*_com"3 ]0 W0 U, Y' p- g3 v) I8 p1 p
// pipelined or register delay signals: "*_d#"
& q8 R% a1 r4 m2 M: K, o// counter signals: "*cnt*"
* a+ h1 e* [: ~ e// clock enable signals: "*_ce"
/ U" M. D1 E" Z2 L& K, Y// internal version of output port: "*_i"
6 l8 }( U! w: U0 l// device pins: "*_pin"
5 L; z: ?5 N/ M( c- H1 S// ports: "- Names begin with Uppercase"1 a5 J6 z- W- B) o$ H
// processes: "*_PROCESS"" }0 W& D2 E# B4 V1 {% f* o& ^% e
// component instantiations: "<ENTITY_>I_<#|FUNC>"
/ e# T( P) s! l" g0 u//----------------------------------------------------------------------------
- @, S/ ]' ]+ k. N/ l! |& W+ i3 N- l4 ^) O. N" P$ V! ]% l
////////////////////////////////////////////////////////////////////////////////
$ k' v) D" u. I6 F4 E% b( M//5 R- j: o, J f# l! H: q0 o/ G: B/ H
//
Y8 b6 k# \6 \8 f$ h// Definition of Ports
1 J" p \/ @ S. n$ f% h+ @// ACLK : Synchronous clock
, b5 G! M. E0 H @0 c7 Z// ARESETN : System reset, active low
9 p- l2 U3 P" D. o7 @1 [// S_AXIS_TREADY : Ready to accept data in& y9 A$ ]# j" J8 E5 n. H# U
// S_AXIS_TDATA : Data in
7 }+ D7 T2 l R7 T! L$ S9 p// S_AXIS_TLAST : Optional data in qualifier
- E8 q" o9 S; `. N, ~// S_AXIS_TVALID : Data in is valid
9 T4 z w% O9 _8 y! e9 ^; t" a// M_AXIS_TVALID : Data out is valid
5 \5 Q4 p) D- w1 E. `3 l& w s// M_AXIS_TDATA : Data Out
( o/ S: ~- c% D7 g y) x5 u// M_AXIS_TLAST : Optional data out qualifier$ Z+ {! k r/ Z( r" m9 X
// M_AXIS_TREADY : Connected slave device is ready to accept data out* b7 U" `8 H* a2 M# o- H: l, H
//: R) ~) ^- Z. o, f3 r
////////////////////////////////////////////////////////////////////////////////3 R" |- T% O' k' j. W
' h1 |1 \/ D, j# u/ A& M5 {/ t//----------------------------------------+ e: ^& y+ A" e4 G
// Module Section. ]/ H7 Q$ J$ @0 W) V& f
//----------------------------------------6 y7 ]: \: w$ d/ l9 O- a7 _4 P: Q
module tft_lcd A+ }2 |: L2 m/ Y I9 k2 p: j
(
+ ~# I* Z- h- }8 p/ k // ADD USER PORTS BELOW THIS LINE
" L# |- q4 W$ ]: N // -- USER ports added here & @3 u8 `# F# c M! D
// ADD USER PORTS ABOVE THIS LINE
5 m6 j; W# ~3 x+ v# G5 {: M9 |* n7 B: a5 q( K! b/ K+ n
// DO NOT EDIT BELOW THIS LINE ////////////////////8 m4 n/ e% Q6 g( O+ C9 j0 ^) D" E( d
// Bus protocol ports, do not add or delete.
& N2 n0 R1 \& |5 l ACLK,7 U/ F2 m" }& g. W
ARESETN,
! R( O+ h% Q* R: r$ s3 [+ n6 Y4 W$ W$ @- a S_AXIS_TREADY,/ p$ O9 C+ W5 h; a5 a0 X J) ~: i4 a
S_AXIS_TDATA,( Z+ }% w) h# p# u) q
S_AXIS_TLAST,) W0 E/ ~& w$ N: b
S_AXIS_TVALID,) B+ H! k- G1 G4 {! _# O
M_AXIS_TVALID,! w( @' s* A, z7 N" A) U* ]$ s
M_AXIS_TDATA,
. O# s6 ~( o' x* Y; F M_AXIS_TLAST,
1 ~0 ^" T5 D) l1 L M_AXIS_TREADY
2 A3 N9 k- b [* @+ a8 p // DO NOT EDIT ABOVE THIS LINE ////////////////////: u$ d: ~7 c9 w3 r2 y5 O* R" i% n
);0 y# H* K3 {- m# a
' R* m, W8 F1 `4 o* _! p5 d1 \// ADD USER PORTS BELOW THIS LINE
* O' n1 W4 X6 {9 B' g// -- USER ports added here . U- b( @9 t1 J5 A/ N9 c
// ADD USER PORTS ABOVE THIS LINE 7 |3 E$ m( `( Q& \
# A, l. U5 v, X3 R; n
input ACLK;
7 {: T4 T7 Y' b+ H4 t9 n, tinput ARESETN;4 c; q7 P# s, x' c m& a
output S_AXIS_TREADY;
5 e0 @0 P* i2 [$ |7 O' ^7 ninput [31 : 0] S_AXIS_TDATA;
/ m" ~! i" L' xinput S_AXIS_TLAST;
6 L' G! n* H5 C6 ?! t* Y! N1 s' @2 Xinput S_AXIS_TVALID;
; P/ r* Z+ f6 m$ w# ]6 youtput M_AXIS_TVALID;0 \4 z3 q/ j, ~- A; J4 ?3 F+ I1 u; N
output [31 : 0] M_AXIS_TDATA;- v* A7 Y6 \3 B2 E; Z' r2 @/ T' s
output M_AXIS_TLAST;: ]) l3 z6 l& b; Q, T, c& i
input M_AXIS_TREADY;1 W5 u2 ^+ l5 ?5 f" }' o
7 w8 d: g* u' D7 R9 L3 g
// ADD USER PARAMETERS BELOW THIS LINE ! M6 K9 I' B2 o" b' P: ^! [
// --USER parameters added here
K4 H! J. [- L// ADD USER PARAMETERS ABOVE THIS LINE k7 P8 n" v" j2 ?) {( A4 k
' t5 Q7 ^+ J- X; _) ]) `" L) h
& l7 ?8 X; P6 f( _- a//----------------------------------------5 I" P4 y% C" U
// Implementation Section" E. m+ {' K9 d2 b3 `7 `, O
//----------------------------------------
7 ]7 ]* P; ~( p: G// In this section, we povide an example implementation of MODULE tft_lcd
. P% S* v: p; r( _ o; D) |) V// that does the following:
# Y) n+ o( W8 i8 g//
* a ^ `, u- ]! v/ y" {7 L// 1. Read all inputs
7 |6 m7 R+ \+ Q# n9 `1 I) M5 I// 2. Add each input to the contents of register 'sum' which& j0 E! x. t+ R+ S
// acts as an accumulator2 |6 F5 \2 D$ [! v
// 3. After all the inputs have been read, write out the$ w6 l: I* l) P# T
// content of 'sum' into the output stream NUMBER_OF_OUTPUT_WORDS times$ I" L1 \# }6 \6 I" A. g4 F9 C
//: S" s4 k% Z0 D- M9 {4 p" ?* Y1 @
// You will need to modify this example for
1 p' a }# T7 C1 g4 {0 e+ k4 z6 ]// MODULE tft_lcd to implement your coprocessor. G- }& K1 W% i* r1 y9 ^
/ Y' s0 x; w9 e1 Z4 p
// Total number of input data./ l0 l5 [4 V V5 C/ W
localparam NUMBER_OF_INPUT_WORDS = 8;4 {( y( r* ^$ D4 F! G
: G2 g7 Z% ~6 k0 q9 [( U // Total number of output data+ ?- o$ d9 Z2 X: l
localparam NUMBER_OF_OUTPUT_WORDS = 8;. v* r& R. L/ n8 w. R7 W
2 o G/ |: u7 |) p# s( `
// Define the states of state machine
% L) |6 Z$ H, D& P0 V. |$ I3 |9 E localparam Idle = 3'b100;
2 c+ E% o4 x9 W& p3 ~+ \ R localparam Read_Inputs = 3'b010;
) Z& E3 w" h) x0 L localparam Write_Outputs = 3'b001;2 x/ h! A$ e% v! ~1 J
1 p7 ` e0 J2 k$ _! D reg [2:0] state;
9 K3 U/ P' X" h( f7 q, h
. X. { l0 d) j R, a# s' V // Accumulator to hold sum of inputs read at any point in time
" z1 z* K9 Y+ S5 f a' \ y$ s+ h reg [31:0] sum;
+ b$ b* x7 @' ~% L3 X" k
+ N% Y4 v6 j' v; ]% I // Counters to store the number inputs read & outputs written/ X% t! K. u: v! b
reg [NUMBER_OF_INPUT_WORDS - 1:0] nr_of_reads;& j& y3 D# B. E+ M& D+ c: w
reg [NUMBER_OF_OUTPUT_WORDS - 1:0] nr_of_writes;8 K- P P' M' l0 L
% b5 L/ S9 p; E# h: N
// CAUTION:# @/ w. w2 W- L4 i, t
// The sequence in which data are read in should be: i" B* Y2 u e9 I2 Q) {
// consistent with the sequence they are written in the, U) S$ v7 M x/ l2 H4 u3 |; k
// driver's tft_lcd.c file% F/ D) T6 j; f0 q! \
[ c2 B0 U9 c' p' a0 y8 f8 n% e assign S_AXIS_TREADY = (state == Read_Inputs);; j1 S/ s4 `- K' f- J W6 _6 l
assign M_AXIS_TVALID = (state == Write_Outputs);# k3 D2 h1 Y: L- n* J7 ?
3 ~1 L6 q* }9 b, o0 y assign M_AXIS_TDATA = sum;
$ u6 F: V( G. P4 Z( K( ^' @) t9 A) D assign M_AXIS_TLAST = 1'b0;6 [! ^5 r7 A0 {
, f! B5 n- F7 z always @(posedge ACLK)
% P+ I8 r. a& o# }. @7 I begin // process The_SW_accelerator
% ?, v5 M/ g- I1 x; S if (!ARESETN) // Synchronous reset (active low)* R9 e# G3 E7 [- D# N
begin
! U$ |- ]: `6 d6 t! r [8 v // CAUTION: make sure your reset polarity is consistent with the
. v; z7 j7 J9 N8 a( O, P, C // system reset polarity# ]3 }/ F( T, o! G
state <= Idle;
4 O5 V2 h6 h; n$ `6 W% U0 G5 U0 G6 q! I nr_of_reads <= 0;
" p7 b# z5 g; q( P' Q' M- g) D4 J nr_of_writes <= 0;- O N9 Y1 Q) g
sum <= 0;3 {1 G7 n0 T; W% ?2 L
end) w1 c2 T: h& B7 O f3 F9 A& ^& Z" V
else
4 [- \# A4 F( L/ } case (state)
! k$ n$ q7 b! F5 M4 s Idle: $ w+ M) m: y# t) X: f! A9 H9 a
if (S_AXIS_TVALID == 1)/ |! p& F, V* H' @. f6 [
begin0 E7 _5 K4 s8 P9 X3 r$ S
state <= Read_Inputs;
+ c# d! b* F3 V( Q3 G) { nr_of_reads <= NUMBER_OF_INPUT_WORDS - 1;9 u9 Y, I$ V7 s3 a' C6 i5 r" J
sum <= 0;! I! R( H a+ G
end4 n9 l3 s: ~! @4 f1 }- Q/ C
( s9 k! y# S! j; j9 S
Read_Inputs:
2 ?4 e. N. F0 T% J6 R G if (S_AXIS_TVALID == 1)
* [& g7 p1 o2 R. K) \ begin
! ?- }7 ~3 p0 e m // Coprocessor function (Adding) happens here/ q& B2 K6 Z2 q( r
sum <= sum + S_AXIS_TDATA;
$ A! O! g" {2 E if (nr_of_reads == 0)2 h' b& S: b$ r9 p6 H
begin
4 c. f( N% m7 m S Z state <= Write_Outputs;
Z# v/ g; ~8 e* n; n) B. s) A nr_of_writes <= NUMBER_OF_OUTPUT_WORDS - 1;1 g1 t7 `. R3 R2 P9 l b
end
# \# S& N9 _+ S, ]! F! M. [& n else; w; l( H4 \; ?6 I8 z! b7 x
nr_of_reads <= nr_of_reads - 1;
! g4 W9 @, u7 x% q! z t8 y end A$ w+ e8 l, S- D! k
/ L w' m4 V9 Y9 G- j m* j
Write_Outputs: / @/ k' n" M; Z3 a1 k5 [, `
if (M_AXIS_TREADY == 1) ! ]! Z( e/ t# b* W+ T) u
begin
P, i. P& F- K) [# X if (nr_of_writes == 0)
) |5 t: x, J1 J8 {# h) K state <= Idle;3 g( M Q4 D# c( p
else
+ s% ^/ B9 t. a' O nr_of_writes <= nr_of_writes - 1;( ?) j; n- i3 [" O1 k0 J" W! z
end: K: n; M$ N7 V6 }
endcase
& Q5 X/ I7 O# c+ Z+ s |- P end
* P' {% s' E3 g" D; W9 V
# Y, t6 t& V1 q% V) xendmodule1 J% ~5 z# H2 _* u% n- t2 p
; j8 a& |9 ?, |' d2 o
1 l1 a3 ?5 b5 a
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