[STM32F401-DISCO开发板]实验一、STM32F401 DISCO开发板介绍，点亮LED
[STM32F401-DISCO开发板]实验三、2路ADC采样+2路PWM输出实验
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这款显示器是黑白的，横向65点阵纵向102点阵，采用8X6点阵非标ASCII码，一行可以显示17个英文X8行，基本够用了。
首先在项目目录中创建一个incs文件夹，将6903.h文档拷贝进去；而后在IAR项目中创建1个文件夹，命名为incs，并且将incs文件夹中的6903.h加进去。
6903.h代码如下：
DigitalOut sdat(PE_15);
: u1 o9 g8 @, T( BDigitalOut sclk(PE_13);
DigitalOut sreg(PE_11);
: s- S' f' k$ ZDigitalOut sres(PE_9);
  M4 b* _) g( w$ Rextern int k;
//6903 102X65LCD
const unsigned char asc2[][6]={//8x6 Dots 32-126[0-94]
1 W0 o7 v# P# D0 u: i# ]{0x00,0x3E,0x45,0x49,0x51,0x3E},//0
{0x00,0x00,0x21,0x7F,0x01,0x00},//1
5 w8 f6 R% ?2 O8 n. Q6 C/ k{0x00,0x31,0x43,0x45,0x49,0x31},//2
{0x00,0x22,0x49,0x49,0x49,0x36},//3
{0x00,0x04,0x0C,0x14,0x7F,0x04},//4
% [- _! m% K/ g{0x00,0x72,0x51,0x51,0x51,0x4E},//5-5
{0x00,0x3E,0x49,0x49,0x49,0x06},//6
  y8 Z7 @' \! e$ M! _6 O+ I{0x00,0x40,0x43,0x4C,0x50,0x60},//7
8 j# S# J7 c5 E3 i5 x6 `5 ?{0x00,0x36,0x49,0x49,0x49,0x36},//8
" x) Y: ]9 l3 m+ H, e$ T{0x00,0x30,0x48,0x48,0x48,0x3F},//9
{0x00,0x1F,0x24,0x64,0x24,0x1F},//A-10
{0x00,0x41,0x7F,0x49,0x49,0x36},//B
{0x00,0x3E,0x41,0x41,0x41,0x22},//C
{0x00,0x41,0x7F,0x41,0x41,0x3E},//D
{0x00,0x41,0x7F,0x49,0x49,0x63},//E
{0x00,0x41,0x7F,0x49,0x5C,0x60},//F-15
. w% L( S  b2 h0 M! `{0x00,0x3E,0x41,0x45,0x47,0x24},//G
{0x41,0x7F,0x08,0x08,0x08,0x7F},//H
  Q' d& l+ F/ W2 t9 |  g{0x00,0x00,0x41,0x7F,0x41,0x00},//I
$ W5 r6 w$ |5 j$ a{0x00,0x42,0x41,0x7F,0x40,0x40},//J
{0x00,0x41,0x7F,0x59,0x24,0x43},//K-20
{0x00,0x40,0x7F,0x41,0x01,0x03},//L
{0x00,0x7F,0x20,0x1E,0x20,0x7F},//M
{0x00,0x7F,0x30,0x18,0x06,0x7F},//N
, n+ b: i% H6 s  t8 ~2 X7 L. f{0x00,0x3E,0x41,0x41,0x41,0x3E},//O
. c" k( g$ x  _2 H* e& {{0x00,0x41,0x7F,0x49,0x48,0x30},//P-25
# C. w$ v" Y/ h6 C- |9 T  [! y{0x00,0x3E,0x41,0x47,0x42,0x3D},//Q
9 e' l6 l1 S6 a# G  m( P{0x00,0x41,0x7F,0x49,0x4C,0x33},//R
{0x00,0x32,0x49,0x49,0x49,0x26},//S
( E0 c; T7 {/ A$ V2 D" E, W  M{0x00,0x60,0x41,0x7F,0x41,0x60},//T
% N: Y: t/ D6 Q# y* I6 j# t{0x00,0x7E,0x01,0x01,0x01,0x7E},//U-30
{0x00,0x7C,0x02,0x01,0x02,0x7C},//V
{0x00,0x7C,0x03,0x3C,0x03,0x7C},//W
{0x00,0x43,0x24,0x18,0x24,0x43},//X
% X- r0 S+ f7 u( @/ V, G/ x+ P- O1 l{0x00,0x60,0x18,0x07,0x18,0x60},//Y
{0x00,0x63,0x45,0x49,0x51,0x63},//Z-35
{0x00,0x00,0x00,0x01,0x00,0x00},//.
) p& x5 [5 I6 C, Z3 z& ^{0x00,0x14,0x14,0x14,0x14,0x14},//=
{0x00,0x08,0x08,0x3E,0x08,0x08},//+
6 u- k2 h( ?! ]3 V{0x00,0x08,0x08,0x08,0x08,0x08},//-
{0x00,0x00,0x00,0x24,0x00,0x00},//:-40
};
+ f0 V$ C2 W$ Y. X4 s. D0 t//Write Plus
void wri(void){sclk=0;sclk=1;}
//Write a byte to lcd dt=data,com=reg/data
void b2l(unsigned char dt,unsigned char com){
unsigned char i;
if(com)sreg=1;else sreg=0;
3 O6 L5 j9 `- z; y' I" A for(i=0;i<8;i++){
  if(dt&0x80){sdat=1;}else{sdat=0;};
$ S( u8 W( n; a2 n  dt=dt<<1;
9 p; t+ f, Q, S  wri();
}
) b/ k# X' X$ H8 j( o1 x2 ]}
//Set lcd display X,Y
6 R$ m7 p4 n' I$ y' ?" g- b$ Yvoid setXY(unsigned char X,unsigned char Y){
/ m- v& U( ?3 x2 L4 v' H  r b2l(0x40 | Y,0);//column
b2l(0x80 | X,0);//row
) N5 v1 d: N! a! m* K}
//lcd Clear
void lcdClear(void){
unsigned char t,k;
setXY(0,0);
for(t=0;t<9;t++){for(k=0;k<102;k++){b2l(0x00,1);}}
}
//display a ASCII code
void c2l(unsigned char x,unsigned char y,unsigned char c){
unsigned char line;
' z2 c* h7 y- K# X/ V7 f setXY(x*6,y);   
for (line=0;line<6;line++) b2l(asc2[c][line],1);
}
//LCD6903 Initial 102x64
void lcdInit(void){
/ H+ L, U* A9 I0 b8 s. Q' O' T* ~4 T wait(0.20);
sres=0;
wait(0.20);
6 p; i, H+ S, U) \2 P1 W4 [4 w sres=1;
wait(0.20);
b2l(0x25,0);//00100 PD=1dcOn|=0Dcoff V=0Up|=1Left H==1
6 z: ]; G1 Z5 {( t. q& y wait(0.005);
# y5 k+ ^0 r7 E b2l(0x14,0);//Plus width L000~111=1/6-1/7-1/8-1/9//14=1/7
" l* ]7 R. ^' ~/ y9 C wait(0.005);
3 v7 K' A  d: L- L: X b2l(0xB4,0);//SET VOP~8.96V
( H0 N+ q0 X% W( G- x# H wait(0.005);
3 T; o3 n, z1 U b2l(0x20,0);//PD=0,H=0,V=0
. b5 T7 M3 q& {) s b2l(0x0C,0);//Set off
wait(0.005);
}
//Display ASCII Test
void dispAsc(void){
int i,j;
) r, O3 K2 d% d5 j7 p1 r- F! \ for(i=0;i<8;i++){
2 G% n' t2 o. h1 C5 Q3 Z, b  for(j=0;j<17;j++){
   c2l(j,i,k);
: F4 ~* U7 g% q/ I   if(k>39){k=0;}else{k++;}
7 y5 M. Z% t" k; H( A9 k2 T: Y& W% G  }
}
}
2 {% t3 j1 l* F0 c% t! s//END Files//
main.cpp的前边加上：
) Q; V7 ~0 p1 z  p# v6 A#include "6903.h"
接着加上：
Serial lptOut(USBTX, USBRX);//由PinNames.h定义的串口：PA_2,PA_3
DigitalOut myled(PD_12);//定义PD_12绿的的LED
接着定义一个公共变量：
, @+ T1 N( t8 jint k=0;
1 s( A( @: e( cmain主函数如下：
0 \7 c' A5 w  w5 B* Nint main(){
0 \: l, d! R, S& j$ y* r1 h lcdInit();
lcdClear();
lptOut.printf("LCD6903 Test ！\n\r");
) {5 {# E2 X7 C. R while(1){
3 m' I( P! p4 f; T  dispAsc();
  myled = !myled;
( F/ v! t- Q- Z" s  lptOut.printf("LCD6903 Test ! \n\r");
  wait(0.5f);
5 G0 b* X; Y8 N! S  lcdClear();
}
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串口速率设置在mbed_config.h文件中。
9 n8 C, w; V; [* e6 C& h; N+ t编译下载后程序运行为：在PA_2——串口RX，PA_3——串口TX，输出“LCD6903 Text ！”。照片21为LCD6903以及虚拟串口硬件连接，照片22是LCD6903 轮显刷屏ASCII码，截图23是串口输出的显示数据。
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anywill 发表于 2017-12-10 10:23
占沙发

# F2 Z# o, X: O7 R+ \/ d/ T谢谢