MBED下的SPI驱动TFT的程序

一花一世界003 · 2015-02-02T10:54:59+00:00

花了一下午时间写完并且测试我的程序，现在共享出来补给一下 * |: ?3 y" g0 m5 c4 ~3 y% e* V# v#include "mbed.h" & P1 l; T( P0 f! k9 f5 L, E1 w; N* X SPI device(SPI_MOSI, SPI_MISO, SPI_SCK);! G6 R0 u" B8 H( R. F: ? 7 x/ K- o0 V& m: I1 ? 其中SPI_MOSI对应你的开发板上面的默认的MOSI,MISO,SCK引脚. }- y8 }/ c% L" \4 d5 s / D& a& l: \+ i9 c, c% E: T//这是我的板子上面的引脚分布图，SPI协议引脚都有在上面 y! h9 _" \8 x# y7 e: Ytypedef unsigned char uchar;) ]! S3 q ~# F. T1 x typedef unsigned int uint;7 K. H5 N" H8 m) Q8 i% | DigitalOut rs(D10);+ y t; o# s/ H7 o$ G8 \ //RS,是这种液晶屏幕的一个重要引脚，也常常标记为PC {7 f7 {, i5 p7 {0 Z& T8 G DigitalOut cs(D9); . n8 L0 t* ]& |8 M8 z" h0 F* F//CS与片选使能还是有一定区别6 ^+ S; P- S$ d: M* v8 X DigitalOut reset(D8); % }; a7 d u0 P. n8 R//RESET复位引脚 D2 i7 E2 n4 ]4 [/ @uchar bitdata; 5 m: D# \( ~7 w2 E! {void delay(uint t); . B4 x6 l+ N; _& |6 E8 a) z6 O, l8 _) u 延时函数 0 j) D. D$ t! A: L+ c' a+ M/ c7 Gvoid delay(uint time)5 ^2 S0 P+ z+ T { % M( h4 n$ e/ b4 buint i,j; : O. h0 p; ]( ]9 q, v for(i=0;i<time;i++) 1 m: f& v* M, p0 E6 q" A' o for(j=0;j<2500;j++);, K3 U6 L3 H9 O; _; A } 0 ~# C0 g5 K9 `8 Q C写命令 % q/ F1 t, Q rvoid write_command(uchar c)6 k" R3 b, `$ @$ X, u1 D {5 O$ b+ p0 x, E8 E+ _ v+ i cs=0;! r- m3 f9 e- a' l7 }, G rs=0;. o- @3 [/ k8 w) K$ X bitdata=c; % O3 m' R* J" F6 b; [device.write(bitdata);& ?' z, S/ Q7 g3 J. X- b2 A7 @ cs=1; 5 ^" j6 V% L: o, Y2 m5 c2 i } 2 b9 E! ]' G7 `3 }: |, N6 ~' z写数据 . |7 R5 R0 e$ b. k8 S# mvoid write_data(uchar d) 9 s: ]. A" O& g{' y6 B: \: k; u5 N cs=0; : @( V- j- O H/ F% G- n5 S" Drs=1; ( u g1 k# j0 g2 D' {bitdata=d;$ ]8 r) g9 N) @! y device.write(bitdata);/ e @* U7 i. x! a6 } cs=1; . L9 b) B, H7 C2 ~# y; l" ^" w+ ?} , T/ F n; w O, f; X写16位数据7 z1 _. p5 P4 t( K/ b. F void wr_com16(unsigned char i,unsigned char j) ) D d6 E$ I, ?% v+ B o- J8 ^ { 2 X, D: J- M9 J9 ] cs=0; 1 y2 k2 p! F) o/ a2 k5 t rs=1;' i; ]5 G* [) ~! { bitdata=i;+ O/ u* h, I4 J8 L( S device.write(bitdata);! [" s9 o" Z1 X: {" F9 q4 u+ U3 n cs=1; + F! W! Y7 R# w a! J# o cs=0;! w* n4 E9 O9 I* k: v( u! ^ rs=1; 1 |* f& d2 B: K$ q7 fbitdata=j;- o' e% c4 y! p H device.write(bitdata); 3 U; Y* j5 O0 D) P+ B0 Ocs=1; 9 y' a" `2 K$ e9 |. m3 x/ C& ^ 8 @% D, l3 ^$ O/ B/ M6 n: x! J }% F, u; y6 V8 Z6 U% r! O 写命令与数据 5 V, z/ G3 W# kvoid LCD_Write_COM_DATA(uchar i,uint j) , t( }8 a3 \) [0 q! w{ ( d5 U" h- R) _4 |6 M) e0 @ write_command(i);) h( h( }, |& Z, X; O( v" K wr_com16(j>>8,j);: f; W( k, `* @4 _# G$ Y } / P! }2 U J" z3 _! J% ]9 s) z8 I. u" `) A/ m8 _$ j: \! l 初始化液晶屏幕 R9 O$ l& ^' P- m2 jvoid lcd_initial() * r+ Q) ~# d* _{+ Z9 I/ o: _' c* ] reset=0;; Q1 x( r* D: p+ J5 y) x delay(100);3 I: t) d. U3 K7 f' g. [0 V reset=1; " @, L' ~( y, }" S delay(100); ( H9 S0 ^* t* J: s LCD_Write_COM_DATA(0x10, 0x0000); // Set SAP,DSTB,STB ( ^& J; |( a6 D9 ?+ k LCD_Write_COM_DATA(0x11, 0x0000); // Set APON,PON,AON,VCI1EN,VC 8 b5 c0 ^+ C* A; P4 E) I) u, w. G$ q6 r. @ LCD_Write_COM_DATA(0x12, 0x0000); // Set BT,DC1,DC2,DC34 o- K$ S: O! T+ ?0 m LCD_Write_COM_DATA(0x13, 0x0000); // Set GVDD# Y7 ~" e: m ?$ D7 U- | LCD_Write_COM_DATA(0x14, 0x0000); // Set VCOMH/VCOML voltage ! \! i5 L- m- A o delay(40); // Delay 20 ms % F5 D F# w3 q T 0 J9 i3 C9 w& @( M // Please follow this power on sequence& \, x" Z. B2 k/ p LCD_Write_COM_DATA(0x11, 0x0018); // Set APON,PON,AON,VCI1EN,VC8 [; n w5 }# G: d5 N5 R6 T LCD_Write_COM_DATA(0x12, 0x1121); // Set BT,DC1,DC2,DC3' y& N" t& t# D; z LCD_Write_COM_DATA(0x13, 0x0063); // Set GVDD7 c1 b1 y% Q" m+ q2 R. Q) i* J LCD_Write_COM_DATA(0x14, 0x3961); // Set VCOMH/VCOML voltage" b# y5 V8 S% L+ {! e/ n) M2 y LCD_Write_COM_DATA(0x10, 0x0800); // Set SAP,DSTB,STB " b& }% U5 I, P& M1 V, L delay(10); // Delay 10 ms5 @& b# y. |+ D& X, H& N LCD_Write_COM_DATA(0x11, 0x1038); // Set APON,PON,AON,VCI1EN,VC7 m! s& b! X. ?# s% w( M m6 B7 k9 m delay(30); // Delay 30 ms: H8 \9 y1 b; G1 e _ o* s $ Y, A( [& e6 Q " D5 a5 ?! z+ E+ ? LCD_Write_COM_DATA(0x02, 0x0100); // set 1 line inversion5 M. b5 K$ Q- ^9 b4 C, ^ ! d1 ~) |' Y D! w- j9 d% y4 b+ i: U, C ? //R01H:SM=0,GS=0,SS=1 (for details,See the datasheet of ILI9225) 4 v$ Q& [5 h- g z0 h LCD_Write_COM_DATA(0x01, 0x011C); // set the display line number and display direction / l& Q/ I! p a7 l' i+ a. B //R03H:BGR=1,ID0=1,ID1=1,AM=0 (for details,See the datasheet of ILI9225) % v5 M) p# r" E+ t. ~0 W1 o LCD_Write_COM_DATA(0x03, 0x1030); // set GRAM write direction.4 G1 y: A6 P" a+ {3 R. x0 l 1 [4 Y3 ~' n+ M2 U5 o' @* Z- K4 O$ M ( v; t5 d* b2 X* M: v* U: R LCD_Write_COM_DATA(0x07, 0x0000); // Display off * A& P4 ?- @8 q( \8 h: y3 K; ] LCD_Write_COM_DATA(0x08, 0x0808); // set the back porch and front porch0 V( l: R- Q5 M+ e2 u LCD_Write_COM_DATA(0x0B, 0x1100); // set the clocks number per line : h' d! Z$ e" b/ s( L3 L LCD_Write_COM_DATA(0x0C, 0x0000); // CPU interface1 P- x9 ]* y3 b/ Q LCD_Write_COM_DATA(0x0F, 0x0501); // Set Osc 2 G9 H/ ]! z1 ?, B LCD_Write_COM_DATA(0x15, 0x0020); // Set VCI recycling - {+ O n( C: ^5 d9 c LCD_Write_COM_DATA(0x20, 0x0000); // RAM Address( d# a2 S! e3 u! o* u& B- s0 ^# | LCD_Write_COM_DATA(0x21, 0x0000); // RAM Address9 J4 S% [2 P5 k) r5 P7 [) y # g; h* f/ A( q5 L //------------------------ Set GRAM area --------------------------------//- x+ b5 A9 {% R0 c& C LCD_Write_COM_DATA(0x30, 0x0000); + J1 L/ U' {; m/ V. ~- P. [9 M LCD_Write_COM_DATA(0x31, 0x00DB); % r$ J' F W. _$ \' k LCD_Write_COM_DATA(0x32, 0x0000); 2 p% Y9 @2 ? D7 g LCD_Write_COM_DATA(0x33, 0x0000); ; w( V( X9 h9 t# N1 A7 |5 m. p% ^ LCD_Write_COM_DATA(0x34, 0x00DB); d6 B8 O5 J E7 F5 ` G4 T; A* U LCD_Write_COM_DATA(0x35, 0x0000); 1 S2 x6 V% \* K3 O! d LCD_Write_COM_DATA(0x36, 0x00AF); ( v5 C- u% n& G7 [( R3 R' P LCD_Write_COM_DATA(0x37, 0x0000); . A7 [2 `' ]# \0 B7 s LCD_Write_COM_DATA(0x38, 0x00DB); ' h) B; X( _2 ^/ W8 D LCD_Write_COM_DATA(0x39, 0x0000); ?% `0 F$ D; o. F; C6 m0 ` & k3 e4 t7 X5 G) n7 f% D+ @( B( P* y" G+ F3 Q // ---------- Adjust the Gamma 2.2 Curve -------------------// ' O0 x+ {( T3 c9 y1 f8 G; { LCD_Write_COM_DATA(0x50, 0x0603); 0 d% P6 f7 \& _7 s LCD_Write_COM_DATA(0x51, 0x080D); 8 D c. V, ~4 [, ` LCD_Write_COM_DATA(0x52, 0x0D0C); : A5 \" |$ j3 [* `' z LCD_Write_COM_DATA(0x53, 0x0205); * R- w( p/ ]2 N, Z9 X9 I, F7 n6 L LCD_Write_COM_DATA(0x54, 0x040A); & T) Z4 k! o( y LCD_Write_COM_DATA(0x55, 0x0703); # w, o7 N" D) X( g+ F LCD_Write_COM_DATA(0x56, 0x0300); # p; l) R0 d0 y' J* T6 i/ Z LCD_Write_COM_DATA(0x57, 0x0400); ) j- i0 ?" U! E7 L( ^* b, r1 j. r LCD_Write_COM_DATA(0x58, 0x0B00); * C3 G) a9 B& E/ {9 k" _ LCD_Write_COM_DATA(0x59, 0x0017); ' r: c2 P" e5 R: s" Q( X; {+ g1 u3 w' _6 f5 _& U: a1 {7 I7 b ! H3 W/ y6 O" y3 a$ Y6 h+ ^" i+ \ 8 R# `7 K" y' z6 L7 K' B$ u LCD_Write_COM_DATA(0x0F, 0x0701); // Vertical RAM Address Position ( U) r! \- g0 R5 |$ _ LCD_Write_COM_DATA(0x07, 0x0012); // Vertical RAM Address Position n. b: }7 T: ^# M5 o% |- k delay(50); // Delay 50 ms2 W3 }. y+ D* V& H z LCD_Write_COM_DATA(0x07, 0x1017); // Vertical RAM Address Position 9 o( t# G4 \5 j2 a9 i+ K 0 C5 @% E* t/ b& O( M# U}6 n6 t( {( |: S y 设置显示位置的命令 ; D7 c1 U' ^. ]& i x/ D5 xvoid addset(unsigned int x,unsigned int y) $ W8 G2 H1 r- A) j5 g9 _{0 o+ J0 v8 ^9 x- `- K LCD_Write_COM_DATA(0x20,x);: u* o- n# Q# T1 I6 D9 B) `$ ? //write_command(0x20);8 T7 `4 y8 Z4 }, g! i // LCD_Write_COM_DATA(0x36,x); 2 X! q9 Q/ r: D8 _ //wr_com16(x>>8,x); 9 ^6 @2 a! Q. v5 ~& h LCD_Write_COM_DATA(0x21,y); 7 N [0 S, U$ C( G* ]7 i- a //write_command(0x21);. R6 @* I* e9 p4 K( v2 e, z // LCD_Write_COM_DATA(0x36,x); % I2 ~) t/ ?5 v: B6 P9 { //wr_com16(y>>8,y); ' l0 B/ `& z r! M: B8 m9 d write_command(0x22); / _4 y: n2 g f/ u' ^* r}2 t" K* k8 j% @7 J1 b0 r 显示区域设置命令* S7 x9 M6 P8 O0 h3 f4 H. R! T void Lcd_SetRegion(uchar xStar, uchar yStar,uchar xEnd,uchar yEnd) : y9 s' ?8 u4 F- N- j: a& ]* v H& g{6 x* p8 b2 u: l4 M# G* L* V7 P6 ~ ) F, u* ^4 }4 I LCD_Write_COM_DATA(0x36,xEnd); ! @9 J. i& m8 ^4 s1 w* T LCD_Write_COM_DATA(0x37,xStar); 2 O: ? A8 i: g1 g LCD_Write_COM_DATA(0x38,yEnd);" w% Y' a0 \% S- P* v LCD_Write_COM_DATA(0x39,yStar);9 A! J0 r$ Z$ [ w0 A LCD_Write_COM_DATA(0x20,xStar); " P: q/ e6 D0 w4 U6 n LCD_Write_COM_DATA(0x21,yStar); 9 r' _5 S' I6 D$ k - O ?, y9 [! M+ }" h& E write_command(0x22); # G. r4 b6 g' b4 c8 T. A( {} - I$ c s' R; H4 t0 i, ?8 b/ y1 x屏幕清除命令 # t2 D7 l& p9 \6 v, t* rvoid Lcd_Clear(uchar DH,uchar DL) / n7 I) D% w- j9 f7 W& [ { ?, n# F8 l4 O5 o unsigned int i,m;9 O* K& y: u" w* q7 _9 Q# t/ e. r Lcd_SetRegion(0,0,175,219);1 ]. @" c2 O1 J6 C3 H for(i=0;i<175;i++)( R' z/ o. ^/ n( ^ for(m=0;m<219;m++) ) x; \' q: G% `8 Q9 S+ V { 7 E. E6 ~) k; y" M- f% G$ K. X wr_com16(DH,DL);& H" z+ y0 e/ J( L8 t7 ?9 \! @/ f8 r } ) F! U- s7 P7 e K6 L# E2 y2 o} 9 ~" G g. {4 o$ { p! V5 n, a; m/ ]% U! u4 c / R. v* F8 u4 e 3 I2 ~% e0 p ^/ A5 i& Kint main() {7 V% B0 n3 {1 S6 L' H; F) ` lcd_initial();, A; H3 ~/ W8 c$ _0 O0 o4 q Lcd_Clear(0x07,0xe0);//绿色 O; G) _$ H; l( F o! w /*RGB % |; }1 {. E" s: D2 ^7 l#define RED 0xf800. n p J" ~' O# ^3 A: G) Z #define GREEN 0x07e0) ?3 p3 x, }8 m0 G0 E #define BLUE 0x001f- O& b2 R3 }$ C #define WHITE 0xffff/ x3 K A4 l3 ?3 u #define BLACK 0x0000 6 ^7 O8 v7 u& U! i#define YELLOW 0xFFE0 " G' p* V$ V4 \& @5 U4 M#define GRAY0 0xEF7D . \7 [. c4 t/ w& _, J #define GRAY1 0x8410 ; P' F7 L2 P. o; p W( L& I& C. k, S #define GRAY2 0x4208 " }$ ` s! L$ j 8 y1 W/ ?1 Q6 x7 G* { ^ W */ & ]) g% u. r4 L while(1);( p0 ?' F4 j7 k9 x {}4 E, x5 H5 _% e5 ? } I( G/ I! b, F% j3 f, x % {) x8 h1 m7 b' N1 z/ p w, h' ~% W2 ^5 n: a1 Z1 i

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一花一世界003 发布时间：2015-2-2 18:54

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花了一下午时间写完并且测试我的程序，现在共享出来补给一下
#include "mbed.h"

SPI device(SPI_MOSI, SPI_MISO, SPI_SCK);
QQæªå¾20150202184406.png

其中SPI_MOSI对应你的开发板上面的默认的MOSI,MISO,SCK引脚
QQæªå¾20150202184739.png

//这是我的板子上面的引脚分布图，SPI协议引脚都有在上面
typedef unsigned char uchar;
typedef unsigned int uint;
DigitalOut rs(D10);
//RS,是这种液晶屏幕的一个重要引脚，也常常标记为PC
DigitalOut cs(D9);
//CS与片选使能还是有一定区别
DigitalOut reset(D8);
//RESET复位引脚
uchar bitdata;
void  delay(uint t);

延时函数
void delay(uint time)
{
uint i,j;
  for(i=0;i<time;i++)
for(j=0;j<2500;j++);
}
写命令
void  write_command(uchar c)
{
cs=0;
rs=0;
bitdata=c;
device.write(bitdata);
cs=1;
}
写数据
void  write_data(uchar d)
{
cs=0;
rs=1;
bitdata=d;
device.write(bitdata);
cs=1;
}
写16位数据
void wr_com16(unsigned char i,unsigned char j)
{
  cs=0;
  rs=1;
  bitdata=i;
device.write(bitdata);
cs=1;
  cs=0;
rs=1;
bitdata=j;
device.write(bitdata);
cs=1;

}
写命令与数据
void LCD_Write_COM_DATA(uchar i,uint j)
{
write_command(i);
wr_com16(j>>8,j);
}

初始化液晶屏幕
void lcd_initial()
{
reset=0;
delay(100);
reset=1;
delay(100);
LCD_Write_COM_DATA(0x10, 0x0000); // Set SAP,DSTB,STB
LCD_Write_COM_DATA(0x11, 0x0000); // Set APON,PON,AON,VCI1EN,VC
LCD_Write_COM_DATA(0x12, 0x0000); // Set BT,DC1,DC2,DC3
LCD_Write_COM_DATA(0x13, 0x0000); // Set GVDD
LCD_Write_COM_DATA(0x14, 0x0000); // Set VCOMH/VCOML voltage
delay(40); // Delay 20 ms

// Please follow this power on sequence
LCD_Write_COM_DATA(0x11, 0x0018); // Set APON,PON,AON,VCI1EN,VC
LCD_Write_COM_DATA(0x12, 0x1121); // Set BT,DC1,DC2,DC3
LCD_Write_COM_DATA(0x13, 0x0063); // Set GVDD
LCD_Write_COM_DATA(0x14, 0x3961); // Set VCOMH/VCOML voltage
LCD_Write_COM_DATA(0x10, 0x0800); // Set SAP,DSTB,STB
delay(10); // Delay 10 ms
LCD_Write_COM_DATA(0x11, 0x1038); // Set APON,PON,AON,VCI1EN,VC
delay(30); // Delay 30 ms

LCD_Write_COM_DATA(0x02, 0x0100); // set 1 line inversion

//R01H:SM=0,GS=0,SS=1 (for details,See the datasheet of ILI9225)
LCD_Write_COM_DATA(0x01, 0x011C); // set the display line number and display direction
//R03H:BGR=1,ID0=1,ID1=1,AM=0 (for details,See the datasheet of ILI9225)
LCD_Write_COM_DATA(0x03, 0x1030); // set GRAM write direction.

LCD_Write_COM_DATA(0x07, 0x0000); // Display off
LCD_Write_COM_DATA(0x08, 0x0808); // set the back porch and front porch
LCD_Write_COM_DATA(0x0B, 0x1100); // set the clocks number per line
LCD_Write_COM_DATA(0x0C, 0x0000); // CPU interface
LCD_Write_COM_DATA(0x0F, 0x0501); // Set Osc
LCD_Write_COM_DATA(0x15, 0x0020); // Set VCI recycling
LCD_Write_COM_DATA(0x20, 0x0000); // RAM Address
LCD_Write_COM_DATA(0x21, 0x0000); // RAM Address

//------------------------ Set GRAM area --------------------------------//
LCD_Write_COM_DATA(0x30, 0x0000);
LCD_Write_COM_DATA(0x31, 0x00DB);
LCD_Write_COM_DATA(0x32, 0x0000);
LCD_Write_COM_DATA(0x33, 0x0000);
LCD_Write_COM_DATA(0x34, 0x00DB);
LCD_Write_COM_DATA(0x35, 0x0000);
LCD_Write_COM_DATA(0x36, 0x00AF);
LCD_Write_COM_DATA(0x37, 0x0000);
LCD_Write_COM_DATA(0x38, 0x00DB);
LCD_Write_COM_DATA(0x39, 0x0000);

// ---------- Adjust the Gamma 2.2 Curve -------------------//
LCD_Write_COM_DATA(0x50, 0x0603);
LCD_Write_COM_DATA(0x51, 0x080D);
LCD_Write_COM_DATA(0x52, 0x0D0C);
LCD_Write_COM_DATA(0x53, 0x0205);
LCD_Write_COM_DATA(0x54, 0x040A);
LCD_Write_COM_DATA(0x55, 0x0703);
LCD_Write_COM_DATA(0x56, 0x0300);
LCD_Write_COM_DATA(0x57, 0x0400);
LCD_Write_COM_DATA(0x58, 0x0B00);
LCD_Write_COM_DATA(0x59, 0x0017);

LCD_Write_COM_DATA(0x0F, 0x0701); // Vertical RAM Address Position
LCD_Write_COM_DATA(0x07, 0x0012); // Vertical RAM Address Position
delay(50); // Delay 50 ms
LCD_Write_COM_DATA(0x07, 0x1017); // Vertical RAM Address Position

}
设置显示位置的命令
void addset(unsigned int x,unsigned int y)
{
LCD_Write_COM_DATA(0x20,x);
  //write_command(0x20);
// LCD_Write_COM_DATA(0x36,x);
  //wr_com16(x>>8,x);
  LCD_Write_COM_DATA(0x21,y);
  //write_command(0x21);
// LCD_Write_COM_DATA(0x36,x);
  //wr_com16(y>>8,y);
write_command(0x22);
}
显示区域设置命令
void Lcd_SetRegion(uchar xStar, uchar yStar,uchar xEnd,uchar yEnd)
{

LCD_Write_COM_DATA(0x36,xEnd);
LCD_Write_COM_DATA(0x37,xStar);
LCD_Write_COM_DATA(0x38,yEnd);
LCD_Write_COM_DATA(0x39,yStar);
LCD_Write_COM_DATA(0x20,xStar);
LCD_Write_COM_DATA(0x21,yStar);

write_command(0x22);
}
屏幕清除命令
void Lcd_Clear(uchar DH,uchar DL)
{
unsigned int i,m;
Lcd_SetRegion(0,0,175,219);
for(i=0;i<175;i++)
for(m=0;m<219;m++)
{
      wr_com16(DH,DL);
}
}

int main() {
lcd_initial();
Lcd_Clear(0x07,0xe0);//绿色
/*RGB
#define RED    0xf800
#define GREEN 0x07e0
#define BLUE 0x001f
#define WHITE 0xffff
#define BLACK 0x0000
#define YELLOW  0xFFE0
#define GRAY0 0xEF7D
#define GRAY1 0x8410
#define GRAY2 0x4208

*/
while(1);
{}
}