使用Arduino Zion驱动教授赠送的1.8寸液晶屏

KANGYD

教授在此帖中https://www.yleee.com.cn/thread-41224-1-2.html赠送了一种1.8寸液晶屏，没有人发帖点亮，趁着五一假期，发个帖子。此屏幕和Arduino官方推出的1.8寸屏几乎一样，要说有不一样的地方，一是没带TF卡座，二是印字和官方略有不同。其余都可依照官方示例进行操作。
Arduino Zion板，SPI接口                        
: y+ ]$ K+ M; L+ m( x  MOSI对应PORTB的26
  MISO对应PORTB的27
/ w6 B) c) |! _; U- d+ Y  SCK 对应PORTB的25
( R0 w  Z7 x' C' r9 H+ d这个液晶屏通过SPI接口与ArduinoZion连接,连接方式如下:
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液晶屏管脚               ArduinoZion
2 ^! u# w, L/ M8 s" D7 Ycontral-------------3.3v背光控制 可以PWM调光
* a) e( v! G5 p- u. {# xsda----------------（26）MOSI不可更改
8 d  F, z- F- B* G3 Nsck----------------（25）SCK不可更改
( N! L2 B5 d7 d9 h2 s% G9 _reset--------------（8）可以更改管脚
rs-----------------（9）可以更改管脚
cs-----------------（10）可以更改管脚
$ i, p" Q  w" u7 H* ?4 t连接完毕，然后打开Arduino IDE的文件>示例程序>TFT>Arduino>TFT Display text,你可以看到如下程序:
/*
  Arduino TFT text example
  
% l2 h) H# ~; j  This example demonstrates how to draw text on the
  TFT with an Arduino. The Arduino reads the value
  of an analog sensor attached to pin A0, and writes
  the value to the LCD screen, updating every
: ^7 [7 c* }5 F# f: B# [  quarter second.
  
( ~5 g& C3 y% }7 S- @  This example code is in the public domain
  Created 15 April 2013 by Scott Fitzgerald
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  http://arduino.cc/en/Tutorial/TFTDisplayText
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2 |$ |, H% W" J/ x */
7 Y0 `2 L: t8 f. z7 l% C3 ^  B$ v#include <TFT.h>  // Arduino LCD library
#include <SPI.h>
! T( J! K, ?% ]// pin definition for the Uno
#define cs   10
' d) L$ V1 {( g2 X: F0 \, q7 f. \* ~#define dc   9
#define rst  8  
5 C4 z2 M# `  ^! X  m+ j// pin definition for the Leonardo
// #define cs   7
; F7 a" F/ L7 H' t' X; a// #define dc   0
4 s5 F+ z5 ~' o  r// #define rst  1
  I# t% d" p. Q0 C+ k5 X1 H// create an instance of the library
TFT TFTscreen = TFT(cs, dc, rst);
* M1 U2 v" q$ }, w, I' T/ c// char array to print to the screen
char sensorPrintout[4];
) g) G: b0 z! Z  K! r6 U, Lvoid setup() {
  
9 X0 N6 I* N, z$ a  // Put this line at the beginning of every sketch that uses the GLCD:
7 m1 k7 y/ y+ @1 T* O1 q0 b  TFTscreen.begin();
  // clear the screen with a black background
  TFTscreen.background(0, 0, 0);
  
  // write the static text to the screen
3 r2 E0 h2 X# n: L, e: z; k  // set the font color to white
  TFTscreen.stroke(255,255,255);
  // set the font size
- G4 C2 \" j3 T- ]  TFTscreen.setTextSize(2);
  // write the text to the top left corner of the screen
; P2 l4 e- v& ?# J3 _  TFTscreen.text("Sensor Value :\n ",0,0);
  // ste the font size very large for the loop
  TFTscreen.setTextSize(5);
9 I" k$ Q5 e2 ?: v; T}
void loop() {
* Q. E3 C* h. l8 `, e! k  // Read the value of the sensor on A0
  String sensorVal = String(analogRead(A0));

: `% A$ |& E9 `  // convert the reading to a char array
  sensorVal.toCharArray(sensorPrintout, 4);
. y7 U+ a* Z( R2 H" E  // set the font color
  TFTscreen.stroke(255,255,255);
  // print the sensor value
4 R" q4 J! n- _  TFTscreen.text(sensorPrintout, 0, 20);
  // wait for a moment
  delay(250);
  // erase the text you just wrote
, I+ \# U: @# e. c  TFTscreen.stroke(0,0,0);
1 [0 g" R( x( U  d+ \  L' X  TFTscreen.text(sensorPrintout, 0, 20);
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" ~4 O8 Y# }7 @. G6 i% {' ?! }直接下载就可以看到显示的图形，还有几个示例都可以试一下，里边示例有使用TF卡的那就只能外接卡座了，呵呵，可以开心的玩耍了



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xdy5211314

不错，不错，写楼主分享哈

fsss007

谢谢，我也有这块屏。