F103的SPI2与ILI9341显示屏控制器通信

wfy680 · 2018-06-10T07:26:40+00:00

本帖最后由 wfy680 于 2018-6-10 15:30 编辑 ( S% ^1 y7 q# F : ~: u& {" }1 U' |原本将SPI2对应的IO脚设置成GPIO，模拟SPI与ILI9341通信，一切正常。现在将这个口设置成SPI，通信不显示，请高手指教。代码如下：+ Y; ]% y/ d4 o9 O+ M' d #define SPI_MASTER_NSS GPIO_Pin_12 - D; J: f8 g- l% U U+ p; B' ]1 `#define SPI_MASTER_SCK GPIO_Pin_134 j: y. `: B- g' P2 Y4 B #define SPI_MASTER_MI GPIO_Pin_14 ( e! n, a% {0 X( D6 D#define SPI_MASTER_MO GPIO_Pin_15, I: k* g z$ l. K3 {) ~# I6 I . u, d9 I. a& ^7 h5 Fvoid OLED_Init(void) ' t; a" \- P4 ~4 k$ y1 Q{- G. v0 R& M8 K6 c GPIO_InitTypeDef GPIO_InitStructure; / F6 u# g0 r- m3 h, K/ { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE); & R$ `* w7 f7 I: j+ F GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10 ; //D/C BLK RST 1 z$ I' Q3 _ `+ h, N GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出. \' o6 x2 Q1 s) B GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz* u n: r9 B7 t GPIO_Init(GPIOA, &GPIO_InitStructure); 4 |2 m- R; f' |* z4 L( } GPIO_SetBits(GPIOA , GPIO_Pin_9); // 背光，高电平亮0 Z2 B! o% v \' h OLED_RST_Clr(); // 复位 : F+ }8 h& d! I* F# y Delay_ms(2); 8 F$ p0 D) p% e5 x6 N4 \ OLED_RST_Set();# j5 E& g- @' `# V* t Delay_ms(5);7 B: b+ d+ P& `1 r. E+ }- q6 j ! l5 s8 G5 h( J5 ?+ _! R SPI2_UserInit(); Z- U$ x2 A" u2 Q9 [2 N- X7 `8 k 1 p h& E9 k s/ G//************* Start Initial Sequence **********// U/ T& a) s- L, v LCD_WR_REG(0xCF); ! T8 ]( l1 n; i7 {5 O+ Q& X LCD_WR_DATA8(0x00); + L! N9 O# ~' ~3 j5 E/ H LCD_WR_DATA8(0xD9); 8 k5 i e, O) F7 z* _ LCD_WR_DATA8(0X30); % m( f( t: F: q5 F 2 z; V) r- h4 s" N" g" c) ~ LCD_WR_REG(0xED); & E, S1 v+ c7 A/ j7 [8 a8 S LCD_WR_DATA8(0x64); " }' ]9 [* ~: O! V1 T% j! e7 C LCD_WR_DATA8(0x03); 8 u9 f! j" g& ]3 \ LCD_WR_DATA8(0X12); 2 }- s0 W6 ]2 H* Y LCD_WR_DATA8(0X81); . H- u0 q6 R) L O5 L* L1 x8 V ! z9 Q/ J: v0 F& B0 L; v LCD_WR_REG(0xE8); 9 {# ~: d1 w6 I" L" B LCD_WR_DATA8(0x85); ' `: U' j5 V. P, l) Y LCD_WR_DATA8(0x10); 0 C1 f; M, t9 J# c( I) T9 T5 e: I1 l: p LCD_WR_DATA8(0x78); 0 A7 a6 m6 E, J' Y: q2 Y# M4 {" Q" l# o8 `, ~( L s# G1 b LCD_WR_REG(0xCB); . ~$ |4 f9 H0 r6 F; g( Y1 G LCD_WR_DATA8(0x39); : V8 c' o' B# n+ t L LCD_WR_DATA8(0x2C); 5 @4 _6 P3 j- D+ i3 r( e LCD_WR_DATA8(0x00); 6 N( |; H3 r5 B& h/ }; y. O. M LCD_WR_DATA8(0x34); 1 I% Q% a% G* H! [0 g/ ]& Q, \. L LCD_WR_DATA8(0x02); 0 a( z% I8 c8 O- N- s " L2 F4 h6 f7 V& }3 p& d LCD_WR_REG(0xF7); " T6 u) p" u6 g/ t0 L V9 p LCD_WR_DATA8(0x20); ) R4 O+ X: u" Z; h4 [$ G, N 3 e( F0 L, F; s5 l8 } LCD_WR_REG(0xEA); : C' T1 K1 L5 ?( F6 d0 e LCD_WR_DATA8(0x00); - Q# `% S. [4 F3 A LCD_WR_DATA8(0x00); 2 t( W: ]( g8 i0 F + J# l" w- F1 ^: o LCD_WR_REG(0xC0); //Power control , R: ~' c9 ~* O- [$ P/ i4 ] LCD_WR_DATA8(0x21); //VRH[5:0] - W. _( J+ s- g- M) }2 m( e. M& j0 M' I& T LCD_WR_REG(0xC1); //Power control $ [ s3 m6 h A( K% v) H LCD_WR_DATA8(0x12); //SAP[2:0];BT[3:0] 4 O. q6 E! K6 F; d1 X8 b, o' H' g# c; p+ G B( V* A LCD_WR_REG(0xC5); //VCM control " ^: N: q) ]+ }# x' f+ O LCD_WR_DATA8(0x32); " [1 \4 D7 b5 J6 R' M/ _; I LCD_WR_DATA8(0x3C); " u7 \7 U' ?" Z; }' \1 e* I. p5 U) [. R1 T# t% D- m( S LCD_WR_REG(0xC7); //VCM control2 4 p" |; @' }0 j/ M" X LCD_WR_DATA8(0XC1); % T W7 e# c: {, ` 9 z! n* P2 ~) B' P$ ~ LCD_WR_REG(0x36); // Memory Access Control ' `' i6 H+ H$ f |3 y. ` LCD_WR_DATA8(0x08); // BGR顺序; @9 C& ?' l$ L6 ~. C . k( H" A+ J- V- c3 r" w LCD_WR_REG(0x3A); // 16位像素 3 t- o4 M6 X% b& s. }+ C5 j! X LCD_WR_DATA8(0x55); ! M7 S$ L6 y' b3 q6 g # y9 T% P9 f t. Z4 K0 Y+ E' R LCD_WR_REG(0xB1); //帧速率控制 & K, p# c/ y' s LCD_WR_DATA8(0x00); 7 F1 B9 h [7 p LCD_WR_DATA8(0x18); - j/ X/ F; x+ F8 H) c- a- B " I5 P5 s9 r5 l4 k# O LCD_WR_REG(0xB6); // Display Function Control 6 F3 r1 R. D2 D& L& C0 a- m( W4 } LCD_WR_DATA8(0x0A); 9 ]! P3 u. K7 K; E) z$ G& n LCD_WR_DATA8(0xA2); 4 s$ _* e# A4 E$ c 8 x# m8 G5 ]1 J. ^( j 8 ?+ o& K0 c6 Y 2 Q# x4 G- a$ k) m+ X LCD_WR_REG(0xF2); // 3Gamma Function Disable ) O; P9 W9 k* g LCD_WR_DATA8(0x00); & s8 } C% ?( W) E/ s " |! @& D9 y: M7 p1 ]/ h LCD_WR_REG(0x26); //Gamma curve selected $ e, ?0 ]+ p: y# Q3 d& W5 r LCD_WR_DATA8(0x01); ) Z$ E3 ^7 C: v" ~* t- f y6 N; q3 a7 L% s LCD_WR_REG(0xE0); //Set Gamma 8 ?/ r, U( Q$ ~ LCD_WR_DATA8(0x0F); , |( l2 i) V+ l4 i" T4 @6 t7 g" @% l! W* d LCD_WR_DATA8(0x20); 4 t! @: Q: ]! ~" A9 H LCD_WR_DATA8(0x1E); 3 B: {- J3 U$ f* w' z& E' G7 @2 w5 x- \ LCD_WR_DATA8(0x09); 5 t0 m4 n% J1 t2 [6 p LCD_WR_DATA8(0x12); ! l5 N3 o% f0 a# B8 K( O LCD_WR_DATA8(0x0B); 5 }6 W* n7 B N. B LCD_WR_DATA8(0x50); 3 c& b R7 K2 ~( w! O& A LCD_WR_DATA8(0XBA); . b5 z8 Q7 L: R4 f LCD_WR_DATA8(0x44); . T6 o$ K8 ~' N6 _1 h LCD_WR_DATA8(0x09); V7 |% N; D/ q+ T LCD_WR_DATA8(0x14); 0 z& s/ D8 t6 ~: D8 q1 G LCD_WR_DATA8(0x05); 6 s* m+ u: [4 U8 b2 M6 |& _4 R5 p! t LCD_WR_DATA8(0x23); $ |9 |+ `0 D: }5 \ LCD_WR_DATA8(0x21); 5 _& l% [9 S# d; T/ ^ LCD_WR_DATA8(0x00); 9 q% V" \+ _; c; ?8 s+ x/ l A+ i; {7 \" X LCD_WR_REG(0XE1); //Set Gamma & H5 I* w6 N% ]: ~9 `( Y LCD_WR_DATA8(0x00); % v" n* [ Z2 a4 y0 o n0 f! G9 U) O& f LCD_WR_DATA8(0x19); ' v* f _; ? |* }$ E LCD_WR_DATA8(0x19); ; J, O( ~7 ]! F) a LCD_WR_DATA8(0x00); " G- h6 Q+ v M4 g, e LCD_WR_DATA8(0x12); / n6 ?+ @0 b( R; Z LCD_WR_DATA8(0x07); , T. l. F6 Q. h- \ K3 c' Z* Q LCD_WR_DATA8(0x2D); 8 P& X. n6 H3 s" N LCD_WR_DATA8(0x28); 4 ~) w9 m9 X' U8 b2 @ LCD_WR_DATA8(0x3F); 1 T/ q; z6 b1 C/ |9 l, G, N+ p LCD_WR_DATA8(0x02); 4 ?; T$ d: P! b& y y LCD_WR_DATA8(0x0A); 1 x# T0 P) T; ^- {7 A* k LCD_WR_DATA8(0x08); 0 C J: D. V* ` ` M1 ~8 F LCD_WR_DATA8(0x25); & N9 ?% `8 ^) X& k LCD_WR_DATA8(0x2D); $ C" |& h( D' o LCD_WR_DATA8(0x0F); 9 C( i3 T, C& V6 y) S $ ?' Q5 W# E {9 m0 d LCD_WR_REG(0x11); //Exit Sleep # ~% ^* [$ n" Z2 A4 n3 l* d2 Y Delay_ms(120); # ?9 R# V. E7 p LCD_WR_REG(0x29); //Display on 8 {" \/ {- x& ], X, h p6 W; {& |- z; Q/ { LCD_DrawPoint(100,100,RED); // ****设置一个红点验证，不成功！！ 9 \/ Z* X- C" H5 x* X2 Q5 q p* `- r+ _' J9 ` ( W0 T* Z! V9 p+ h4 W} 7 ]' K0 _9 C* {8 N 9 j; X$ J7 o) M: Tvoid LCD_DrawPoint(u16 x,u16 y,u16 Color); E8 I- Z( ] C4 o. o9 @ { 6 a% ?! I/ g8 D n, ? Address_set(x,y,x,y);//设置光标位置 3 }# f; L* x5 m) b0 p LCD_WR_DATA(Color); 0 d* s; Z% G1 W! v } : F- J$ j' g$ y 1 r' G9 R9 B6 ~& e# B, K8 H % g/ u* o' M% I- n: [) \: w, U7 r$ W% C, z void LCD_WR_DATA8(char da) // 写 8 bit 数据 . [/ S0 O# q# U. _4 P( y- r1 ~{ ! d# y \/ a2 y3 u OLED_DC_Set(); . s& G4 ~& P* G9 [, N SPI2_Send(da);( x: R3 y$ ^- X4 r: k0 Q2 { } 7 l/ _% ]# k+ |& O' t$ ]8 Q6 K 0 L: p2 h4 `3 x0 h I" D- Q5 }; H. ?% _4 R8 m1 U void LCD_WR_REG(char da) // 写 8 bit 指令 ' n9 u e- @. N# Z$ I; `5 K{ : y6 }( P1 \7 L& O& l. v, _% w4 l OLED_DC_Clr(); 3 `2 j! v) c, j+ |! X% O# P SPI2_Send(da); X- M: a2 v- I5 Y% R }& J2 Z5 L: l; O. j c3 f- [ - N; I3 B5 z! ], L$ C$ S. }0 ~3 j1 ]2 `3 k 7 w5 h- D$ [% N, x( c2 K+ ?6 ^( M9 A5 h% D" S void LCD_WR_DATA(int da) 4 D* l. O+ F6 @, T{ # M8 s6 I6 ^. p, p: b OLED_DC_Set();- Q4 c) x, q2 t9 E1 r5 L3 F SPI2_Send(da>>8); Z& z! m- C! S( E0 h0 _( K7 B SPI2_Send(da); / g" T+ h* ]. f7 {9 f$ j} $ Q( `; M% V% P6 \% B 7 L y2 g$ ?6 A. ?& u1 H# z3 b* r6 E/ \% t) b void SPI2_UserInit( void )( {/ h! c* n. Q5 { {3 s4 x4 m4 o+ L R0 f GPIO_InitTypeDef GPIO_InitStructure; : i ^" x, _' `' c$ |0 `$ U; C' A SPI_InitTypeDef SPI_InitStructure;. o( G* e* K* _8 u" t( G 7 l% }+ E7 @, H) n , B0 c( T7 Z! B9 B) @$ E/ w RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB , ENABLE);//使能GPIOB时钟 $ l; _1 v u: K; D1 S RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE); //使能spi2 9 d' R5 p) y. z. g) d , V3 ^7 ` N$ N( V* C- B1 P* ? GPIO_InitStructure.GPIO_Pin = SPI_MASTER_SCK | SPI_MASTER_MO;0 p4 Z/ Y) y8 u8 c GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;# D/ J' P! `& G6 n+ j& {# C GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 2 V( |. G/ T* G: k6 r* }0 q GPIO_Init(GPIOB, &GPIO_InitStructure);' p+ @$ O! N1 M# E ( D3 I) O; j6 u3 F GPIO_InitStructure.GPIO_Pin = SPI_MASTER_MI; ( o4 J$ ^* j# o j+ L. _: D' A GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;. x# n' k: x1 i+ y4 T" p! s GPIO_Init(GPIOB, &GPIO_InitStructure); , |% `" \1 I# e8 V! o2 R4 j- M- e* o# W1 u' T2 x //GPIO_SetBits(GPIOB , SPI_MASTER_SCK | SPI_MASTER_MO |SPI_MASTER_MI);9 X$ R8 t( t# f) b" B) C. n 3 V ]$ d3 C! g9 a8 ] $ i; d+ N* V0 s9 ]3 N7 {' U( c# w. J8 K /* SPI2 configuration ------------------------------------------------------*/ ; o% ]' x2 V: i& l4 S; B+ M+ ~! t3 n /* SPI2 configuration ------------------------------------------------------*/! o. Q4 k. v- E% [. I9 D SPI_Cmd(SPI2, DISABLE); //必须先disable，才能改变MODE4 t2 a1 k$ [( u% W: g7 n, L SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; // SPI_Direction_1Line_Tx , SPI_Direction_2Lines_FullDuplex% V+ G' K L1 S, C! X+ ]5 u SPI_InitStructure.SPI_Mode = SPI_Mode_Master; : y9 s8 V! ]6 w w/ t' H! n% x- i SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; // SPI_DataSize_16b SPI_DataSize_8b:SPI数据大小：发送8位帧数据结构 / j+ \7 N1 j% ]6 u SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; // SCK SPI_CPOL_Low , SPI_CPOL_High: //设备空闲状态时同步时钟SCK的状态，High * Q; E C4 [. t; ~: M5 z& P- e SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; //CPHA=1:数据采样从第二个时钟沿开始 / T. ] W. X% F5 E/ T- _6 y' o0 e SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; // NSS由软件控件片选 SPI_NSS_Hard SPI_NSS_Soft0 A5 J$ v, s q) J7 J" M+ H) e) a SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8; // SPI_BaudRatePrescaler_8 SPI_BaudRatePrescaler_256+ p0 w2 z# V9 Z7 {1 _ SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;//SPI_FirstBit_MSB; SPI_FirstBit_LSB 1 V* a) C0 Q4 b1 A8 K6 Y2 Y f SPI_InitStructure.SPI_CRCPolynomial = 7;; e" G2 B) \- o3 g. P SPI_Init(SPI2, &SPI_InitStructure); # X$ Z1 N# V# Z % g$ z7 {3 ~$ x; R& a0 n( [ SPI_Cmd(SPI2, ENABLE);5 I0 G+ \# S0 ?' Z. A" O8 H2 g+ N3 [ } 7 z( y* q6 }( Y+ o/ J0 P " e& x7 t5 n4 P5 K3 ?, U/ w6 z! S # }* r1 T5 U# `% x8 ]& @void SPI2_Send(u8 data) 2 i, g9 {! S% q+ l{ 2 t: @9 R, O1 d0 R1 f while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); /* Wait for SPI2 Tx buffer empty */! j$ v9 y! t: ?# B SPI_I2S_SendData(SPI2, data ); ' }: G4 D& {& g' A5 | y$ }} " N( o/ O% K C% I0 K. n" K& }! Z1 r) i# Y: M4 J# K! f % y9 p: J1 E) F+ G- r void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2) % Q) [$ ~: @# t" K3 f. h" G( W{ 2 ?' n" @. v1 M" W" S( {$ G d LCD_WR_REG(0x2a); ( l' v' T% ]9 z0 }2 }- T; }( b4 l LCD_WR_DATA8(x1>>8); " a3 G/ x! ^4 H6 Q' h2 `/ a LCD_WR_DATA8(x1); ! ~# L, y4 a8 ? LCD_WR_DATA8(x2>>8);6 v0 P2 q& N. U& u+ Y: v LCD_WR_DATA8(x2);. C0 N3 k: X6 {& m 2 Q9 D7 G) l, @" b7 `$ y LCD_WR_REG(0x2b);/ {$ d- ? e* o2 R& h LCD_WR_DATA8(y1>>8);7 k& M) O# R' ~ i; k LCD_WR_DATA8(y1); 3 W% ^% F1 u9 J v LCD_WR_DATA8(y2>>8); # Q6 g% m% e5 b9 Z! D! p L2 R9 l LCD_WR_DATA8(y2);$ I" U! d6 {# M9 d+ g$ G ' y% E3 P# Y7 |/ m" \8 v6 [ LCD_WR_REG(0x2C); " Z! T7 d9 |7 m0 ^2 v}( \7 @5 j4 K$ z' t% Y ( y3 b. J4 S+ I$ g/ O / y7 x6 l* N3 }. w9 W

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wfy680 发布时间：2018-6-10 15:26

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本帖最后由 wfy680 于 2018-6-10 15:30 编辑

原本将SPI2对应的IO脚设置成GPIO，模拟SPI与ILI9341通信，一切正常。现在将这个口设置成SPI，通信不显示，请高手指教。代码如下：
#define SPI_MASTER_NSS          GPIO_Pin_12
#define SPI_MASTER_SCK          GPIO_Pin_13
#define SPI_MASTER_MI          GPIO_Pin_14
#define SPI_MASTER_MO          GPIO_Pin_15

void OLED_Init(void)
{
  GPIO_InitTypeDef  GPIO_InitStructure;
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10 ;    //D/C BLK RST
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  GPIO_SetBits(GPIOA , GPIO_Pin_9);    // 背光，高电平亮
  OLED_RST_Clr(); // 复位
  Delay_ms(2);
  OLED_RST_Set();
  Delay_ms(5);

  SPI2_UserInit();

//************* Start Initial Sequence **********//
  LCD_WR_REG(0xCF);
  LCD_WR_DATA8(0x00);
  LCD_WR_DATA8(0xD9);
  LCD_WR_DATA8(0X30);

  LCD_WR_REG(0xED);
  LCD_WR_DATA8(0x64);
  LCD_WR_DATA8(0x03);
  LCD_WR_DATA8(0X12);
  LCD_WR_DATA8(0X81);

  LCD_WR_REG(0xE8);
  LCD_WR_DATA8(0x85);
  LCD_WR_DATA8(0x10);
  LCD_WR_DATA8(0x78);

  LCD_WR_REG(0xCB);
  LCD_WR_DATA8(0x39);
  LCD_WR_DATA8(0x2C);
  LCD_WR_DATA8(0x00);
  LCD_WR_DATA8(0x34);
  LCD_WR_DATA8(0x02);

  LCD_WR_REG(0xF7);
  LCD_WR_DATA8(0x20);

  LCD_WR_REG(0xEA);
  LCD_WR_DATA8(0x00);
  LCD_WR_DATA8(0x00);

  LCD_WR_REG(0xC0); //Power control
  LCD_WR_DATA8(0x21); //VRH[5:0]

  LCD_WR_REG(0xC1); //Power control
  LCD_WR_DATA8(0x12); //SAP[2:0];BT[3:0]

  LCD_WR_REG(0xC5); //VCM control
  LCD_WR_DATA8(0x32);
  LCD_WR_DATA8(0x3C);

  LCD_WR_REG(0xC7); //VCM control2
  LCD_WR_DATA8(0XC1);

  LCD_WR_REG(0x36); // Memory Access Control
  LCD_WR_DATA8(0x08);  // BGR顺序

  LCD_WR_REG(0x3A);    // 16位像素
  LCD_WR_DATA8(0x55);

  LCD_WR_REG(0xB1); //帧速率控制
  LCD_WR_DATA8(0x00);
  LCD_WR_DATA8(0x18);

  LCD_WR_REG(0xB6); // Display Function Control
  LCD_WR_DATA8(0x0A);
  LCD_WR_DATA8(0xA2);

  LCD_WR_REG(0xF2); // 3Gamma Function Disable
  LCD_WR_DATA8(0x00);

  LCD_WR_REG(0x26); //Gamma curve selected
  LCD_WR_DATA8(0x01);

  LCD_WR_REG(0xE0); //Set Gamma
  LCD_WR_DATA8(0x0F);
  LCD_WR_DATA8(0x20);
  LCD_WR_DATA8(0x1E);
  LCD_WR_DATA8(0x09);
  LCD_WR_DATA8(0x12);
  LCD_WR_DATA8(0x0B);
  LCD_WR_DATA8(0x50);
  LCD_WR_DATA8(0XBA);
  LCD_WR_DATA8(0x44);
  LCD_WR_DATA8(0x09);
  LCD_WR_DATA8(0x14);
  LCD_WR_DATA8(0x05);
  LCD_WR_DATA8(0x23);
  LCD_WR_DATA8(0x21);
  LCD_WR_DATA8(0x00);

  LCD_WR_REG(0XE1); //Set Gamma
  LCD_WR_DATA8(0x00);
  LCD_WR_DATA8(0x19);
  LCD_WR_DATA8(0x19);
  LCD_WR_DATA8(0x00);
  LCD_WR_DATA8(0x12);
  LCD_WR_DATA8(0x07);
  LCD_WR_DATA8(0x2D);
  LCD_WR_DATA8(0x28);
  LCD_WR_DATA8(0x3F);
  LCD_WR_DATA8(0x02);
  LCD_WR_DATA8(0x0A);
  LCD_WR_DATA8(0x08);
  LCD_WR_DATA8(0x25);
  LCD_WR_DATA8(0x2D);
  LCD_WR_DATA8(0x0F);

  LCD_WR_REG(0x11); //Exit Sleep
  Delay_ms(120);
  LCD_WR_REG(0x29); //Display on

  LCD_DrawPoint(100,100,RED);  // ****设置一个红点验证，不成功！！

}

void LCD_DrawPoint(u16 x,u16 y,u16 Color)
{
Address_set(x,y,x,y);//设置光标位置
LCD_WR_DATA(Color);
}

void LCD_WR_DATA8(char da) // 写 8 bit 数据
{
  OLED_DC_Set();
  SPI2_Send(da);
}

void LCD_WR_REG(char da)  // 写 8 bit 指令
{
  OLED_DC_Clr();
  SPI2_Send(da);
}

void LCD_WR_DATA(int da)
{
  OLED_DC_Set();
  SPI2_Send(da>>8);
  SPI2_Send(da);
}

void SPI2_UserInit( void )
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef  SPI_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  , ENABLE);//使能GPIOB时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE); //使能spi2

GPIO_InitStructure.GPIO_Pin = SPI_MASTER_SCK | SPI_MASTER_MO;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = SPI_MASTER_MI;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);

//GPIO_SetBits(GPIOB , SPI_MASTER_SCK | SPI_MASTER_MO |SPI_MASTER_MI);

/* SPI2 configuration ------------------------------------------------------*/
/* SPI2 configuration ------------------------------------------------------*/
SPI_Cmd(SPI2, DISABLE); //必须先disable，才能改变MODE
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; // SPI_Direction_1Line_Tx , SPI_Direction_2Lines_FullDuplex
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; // SPI_DataSize_16b SPI_DataSize_8b:SPI数据大小：发送8位帧数据结构
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; // SCK SPI_CPOL_Low ,  SPI_CPOL_High: //设备空闲状态时同步时钟SCK的状态，High
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; //CPHA=1:数据采样从第二个时钟沿开始
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; // NSS由软件控件片选 SPI_NSS_Hard SPI_NSS_Soft
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8; // SPI_BaudRatePrescaler_8 SPI_BaudRatePrescaler_256
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;//SPI_FirstBit_MSB; SPI_FirstBit_LSB
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);

SPI_Cmd(SPI2, ENABLE);
}

void SPI2_Send(u8 data)
{
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); /* Wait for SPI2 Tx buffer empty */
SPI_I2S_SendData(SPI2, data );
}

void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
  LCD_WR_REG(0x2a);
  LCD_WR_DATA8(x1>>8);
  LCD_WR_DATA8(x1);
  LCD_WR_DATA8(x2>>8);
  LCD_WR_DATA8(x2);

  LCD_WR_REG(0x2b);
  LCD_WR_DATA8(y1>>8);
  LCD_WR_DATA8(y1);
  LCD_WR_DATA8(y2>>8);
  LCD_WR_DATA8(y2);

  LCD_WR_REG(0x2C);
}