嵌入式实验三人机交互接口-键盘操作实验

实 验 报 告

指导教师

课程名称 实验仪器 实验名称 系 别 专 业 班级/学号学生姓名 实验日期 成 绩

嵌入式系统设计

清华同方辰源嵌入式系统实验箱 实验三:人机交互接口-键盘操作实验 计算机学院

计算机科学与技术

实验三：人机交互接口-键盘操作实验

一、实验问题回答

（1）键盘的工作原理是什么？

答：键盘分独立式键盘与矩阵式键盘。 独立式键盘：

在由单片机组成的测控系统及智能化仪器中，用的最多的是独立式键盘。这种键盘具有硬件与软件相对简单的特点，其缺点是按键数量较多时，要占用大量口线。

当按键没按下时，CPU对应的I/O接口由于内部有上拉电阻，其输入为高电平；当某键被按下后，对应的I/O接口变为低电平。只要在程序中判断I/O接口的状态，即可知道哪个键处于闭合状态。 矩阵式键盘：

矩阵式键盘使用于按键数量较多的场合，它由行线与列线组成，按键位于行、列的交叉点上。一个3*3的行列结构可以构成一个有9个按键的键盘。同理，一个4*4的行列可以构成一个16按键的键盘。很明显，在按键数量较多的场合，与独立式键盘相比，矩阵式键盘要节省很多I/0接口。 键盘按键识别方法分扫描法语线反转法。 扫描法：

扫描法有行扫描和列扫描两种，无论采用哪种，无论采用哪种，其效果是一样的，只是在程序中的处理方法有所区别。下面以列扫描法为例来介绍扫描法识别按键的方法。首先在键处理程序中将P1.4-P1.7依次按位变低，P1.4-P1.7在某一时刻只有一个为低。在某一位为低时读行线，根据行线的状态即可判断出哪一个按键被按下。如2号键按下，当列线P1.5为低时，读回的行线状态中P1.0被拉低，由此可知K2键被按下。一般在扫描法中分两步处理按键，首先是判断有无键按下，如行线有一个为低，则有键按下。当判断有键按下时，使列线依次变低，读行线，进而判断出具体哪个键被按下。

线反转法：

扫描法是逐行或逐列扫描查询，当被按下的键处于最后一列时，要经过多次扫描才能最后获得此按键所处的行列值。而线反转法则显的简练，无论被按的键处于哪列，均可经过两步即能获得此按键所在的行列值。

首先将行线P1.0-P1.3作为输入线，列线P1.4-P1.7作为输出线，并且输出线输出全为低电平，读行线状态，则行线中电平为低的是按键所在的行。然后将列线作为输入线，行线作为输出线，并将输出线输出为低电平，读列线状态，则列线是电平为低的是按键所在的列。综合上述两步结果，确定按键所在的行和列，从而识别出所按下的键。 假设10号键被按下，在第一步P1.3-P1.0全为低电平时，读P1.4-P1.7的值，则P1.5为低电平；在第二步P1.4-P1.7输出全为低电平时，读P1.3-P1.0时，P1.2为低电平。由此可判断第3行第2列有键被按下，此键就是K10键。

（2）键盘等其他外部设备与CPU之间如何协调工作？

答：cpu通过I/O接口和外部设备进行数据交换。cpu通过接口对外设进行控制的方式有以下几种：程序查询方式、中断处理方式、DMA传送方式。

（3）在实验报告中对键盘中断服务程序进行逐行注释，理解计算机是如何接收键盘输入的。

答：

void GPIO_PORT_D_ISR(void)

{ unsigned char ucKey; //定义一个unsigned char类型的变量 ucKey unsigned long ulStatus; //定义一个unsigned long 类型的变量 ulStatus ulStatus = GPIOPinIntStatus(GPIO_PORTD_BASE, true); //读取中断状态 GPIOPinIntClear(GPIO_PORTD_BASE, ulStatus);//清空读取到的中断 if(ulStatus & GPIO_PIN_7)//如果GPIO_PIN_7中断状态有效 { ucKey = GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_4);//读取管脚 ucKey = ucKey>>1;//ucKey右移一位 ucValue = ucValue + ucKey;//ucValue+1 ucValue = ucValue<<1;//ucValue左移一位 i++; if(i==4)//如果发生四次中断 { i=0;//i置0

Event_Key=1;//Event_Key置一，代表按键信息已传给cpu oledkey[1]='\\0';给oledKey[1]赋值\\0 if((ucValue>>4)<10)//如果ucValue右移四位后小于10 oledkey[0] = (ucValue>>4) + 48;//则oledkey[0]右移四位后加48 else oledkey[0] = (ucValue>>4) - 10 + 'A';//否则ucValue右移四位减10加A } } }

（4）根据实验思考，如果有两个不同的中断需要响应时，应该如何设计程序？

答： while(1)

{ if(Event_key)//中断1发生的标志 { Event_key=0; ?. ? } if(Event) //中断2发生的标志 { Event = 0; ? ? } }

（5）按下几个键后屏幕中出现多个字符怎么办？如何只显示一个？

答：发生一次按键中断后调用一次函数RIT128x96x4Clear();。

（6）因为本次实验需要响应两个中断，需要对主函数的死循环做以下改动。

while(1) { if(Event_key) { Event_key=0; …. … } if(Event) { Event = 0; …… } }

思考：这样设计的目的和作用是什么？要是系统需要响应4个不

同的中断又如何设计？

答：目的是使各个中断的处理不受影响。如果需要响应4个不同的中断则需要定义四个全局变量（值为0或1）来标记每个中断。 示例如下：

while(1) {

if(Event1) { Event1=0; …. … } if(Event2) { Event 2= 0; …… } if(Event3) { Event 3= 0; …… } if(Event4) { Event 4= 0; …… } }

二、实验目的和效果 实验目的：

（1）了解键盘工作原理和使用方法 （2）深入学习、理解、掌握中断使用方法

实验效果：

三、实验内容和步骤

实验内容：

（1）默认在在OLED屏幕上分行显示自己的学号、姓名，如“2010011001”、“zhangsan”。

思路：RIT128x96x4StringDraw直接显示。

（2）按下键盘的任意键，在OLED屏幕正中显示该键字符，如“0”、“A”等。

思路：通过oledkey得到键盘的值，利用RIT128x96x4StringDraw显示在屏幕上。

（3）按下键盘的偶数键时，在OLED屏幕上显示“Now Show Char！”提示信息，并在OLED屏幕上显示实验一的字符，并根据按下的键值，确定字符的位置，按“0”、“2”、“4”、“6”、“8”、“A”、“C”、“E”分别在最左端，距左端1/8屏幕宽度处、距左端2/8屏幕宽度处、距左端3/8屏幕宽度处、距左端1/2屏幕宽度处、距右端3/8屏幕宽度处、距右端2/8屏幕宽度处、距右端1/8屏幕宽度处、最右端显示。要保证字符可以全部显示。

思路：通过switch语句进行判断，当键盘值为上述字符时调用Draw_Char_F(ulx)在相应位置显示字符图形。

（4）按下键盘的奇数键时，在OLED屏幕上显示“Now Reset Speed！”提示信息，在OLED屏幕上显示实验二的效果，即根据自己分配的阈值和移动路线上对字符进行移动，并根据按下的键值，确定频率的快慢，按“1”、“3”、“5”、“7”、“9”、“B”、“D”、“F”由慢到快（速度可以逐个递增2倍或5倍）。

思路：通过switch语句进行判断，当键盘值为上述字符时调用Reset_Counter_Speed(x)设置字符的不同移动速度。

（5）根据自己的想法，选用一个按键，在OLED屏幕上显示与上面不同的效果。

思路：一朵花从花盆中长出花茎、叶子、花朵。通过不同的按键长出花的不同部分。

实验步骤：

（一）Keil开发环境中对项目Project配置 见实验一（一）步骤 （二）嵌入式C程序开发 （1）加载必要程序

本次实验提供了几个源程序rit128x96x4.h，rit128x96x4.c，startup.s，都压在work3_code.zip中，与实验一（二）（1）步骤类似。

（2）新建主函数程序，并加载到项目中

新建一个文件，保存为main.c，把main.c也加载到项目中，与实验一（二）（2）步骤类似。 本次实验需要增加以下头文件 #include #include #include #include #include #include #include

#include #include \

本次实验显示的内容实验（二）已完成，故可在实验（二）基础上进一步开发。

（3）利用中断，接收键盘输入

（3）--（1）在主函数中 开启键盘中断，示例如下： /*使能外设GPIO*/

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC); SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);

/*设置GPIO为输入*/

GPIOPinTypeGPIOInput(GPIO_PORTD_BASE, GPIO_PIN_7); GPIOPinTypeGPIOInput(GPIO_PORTC_BASE, GPIO_PIN_4);

/*使能中断*/

IntEnable(INT_GPIOD); IntMasterEnable();

GPIOPinIntEnable(GPIO_PORTD_BASE, GPIO_PIN_7); GPIOIntTypeSet(GPIO_PORTD_BASE, GPIO_RISING_EDGE);

GPIO_PIN_7,

注意：其中，GPIO_PORTC用于传输按下的键值，GPIO_PORTD用于向CPU发起中断请求。

（3）--（2）设置全局变量oledkey用于保存键盘输入的按键 char oledkey[2];

（3）--（3）设计实现并注册键盘中断处理函数

键盘每次按键都会触发四次中断，中断信号源为GPIO Port D，修改startup.s中GPIO Port D项对应的中断服务处理函数，与实验（二）设置中断流程类似，这里不再重复。

键盘中断处理函数示例如下：

int i=0; // i定义为全局变量，因为只有1根线GPIO_PIN_4与CPU相联，所以一个按键（16种，4bit表示）需要四次中断才能传给CPU。

unsigned char ucValue=0x00; //ucValue定义为全局变量，该值存储输入的按键值的中间结果。

/*中断服务函数ISR*/ void GPIO_PORT_D_ISR(void) {

unsigned char ucKey;

unsigned long ulStatus;

ulStatus = GPIOPinIntStatus(GPIO_PORTD_BASE, true); GPIOPinIntClear(GPIO_PORTD_BASE, ulStatus);

if(ulStatus & GPIO_PIN_7) {

ucKey = GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_4); ucKey = ucKey>>1;

ucValue = ucValue + ucKey; ucValue = ucValue<<1; i++; if(i==4) { i=0;

oledkey[1]='\\0'; if((ucValue>>4)<10)

oledkey[0] = (ucValue>>4) + 48; else

oledkey[0] = (ucValue>>4) - 10 + 'A'; } }

#include #include #include

#include \int Event=0; int Event_Key=0; int count1=0; char oledkey[2]; int i=0; int z=56; unsigned char ucValue=0x00; unsigned char buf01[] = //开放的花 { 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf02[] = { 0x00,0x00, 0x00,0x00,

0xff,0xff, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00 };

unsigned char buf03[] = {

0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00 };

unsigned char buf04[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf05[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf06[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf07[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf08[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf09[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf010[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf011[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf012[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf013[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf015[] = {

0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, };

unsigned char buf014[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff,

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff };

unsigned char buf016[] = {

0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00 };

unsigned char buf017[] = { 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00 };

unsigned char buf018[] = { 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff,

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 };

unsigned char buf019[] = { 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 };

unsigned char buf020[] = { //花枝 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufp1[] = {

0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff,

//花盆 huapen 0xff,0xff }; unsigned char bufp2[] = {

0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff }; unsigned char bufp3[] = {

0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff,

0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00 }; unsigned char bufp4[] = {

0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff,

0xff,0xff, 0x00,0x00, 0x00,0x00 }; unsigned char bufp5[] = {

0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufp6[] = {

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff,

0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufp7[] = {

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff,

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufp8[] = {

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufp9[] = {

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufp10[] = {

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00,

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufp11[] = {

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufp12[] = {

0x00,0x00, 0x00,0x00, 0x00,0x00,

0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufl1[] = //叶子 big leaf 8x6 {

0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char bufl2[] = {

0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00,

0xff,0xff, 0x00,0x00, 0x00,0x00 }; unsigned char bufl3[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00 }; unsigned char bufl4[] = { 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff }; unsigned char bufl5[] = { 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff }; unsigned char bufl6[] = { 0x00,0x00,

0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff }; unsigned char bufs1[] = //small leaf {

0x00,0x00, 0x00,0x00, 0xff,0xff, 0xff,0xff, 0x00,0x00, 0x00,0x00 }; unsigned char bufs2[] = {

0x00,0x00, 0xff,0xff, 0x00,0x00, 0x00,0x00, 0xff,0xff, 0x00,0x00 }; unsigned char bufs3[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0xff,0xff }; unsigned char bufs4[] = {

0xff,0xff, 0xff,0xff, 0xff,0xff,

0xff,0xff, 0xff,0xff, 0x00,0x00 }; unsigned char buf1[] = {

0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff }; unsigned char buf2[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf3[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf4[] = {

0xff,0xff, 0xff,0xff, 0xff,0xff, 0xff,0xff, 0x00,0x00 }; unsigned char buf5[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf6[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf7[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf1c[] = {

0xf4,0xf4, 0xf4,0xf4, 0xf4,0xf4, 0xf4,0xf4, 0xf4,0xf4 }; unsigned char buf2c[] = {

0xf6,0xf6, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf3c[] =

{

0xf8,0xf8, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf4c[] = {

0xfa,0xfa, 0xfa,0xfa, 0xfa,0xfa, 0xfa,0xfa, 0x00,0x00 }; unsigned char buf5c[] = {

0xfc,0xfc, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf6c[] = {

0xfe,0xfe, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 }; unsigned char buf7c[] = {

0xff,0xff, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00 };

unsigned char buf1a[] = {

0xff,0xff, 0xff }; unsigned char buf2a[] = {

0xff,0x00, 0x00 }; unsigned char buf3a[] = {

0xff,0x00, 0x00 }; unsigned char buf4a[] = {

0xff,0xff, 0x00 }; unsigned char buf5a[] = {

0xff,0x00, 0x00 };unsigned char buf6a[] = {

0xff,0x00, 0x00 }; unsigned char buf7a[] = {

0xff,0x00, 0x00 }; unsigned char buf9[] = {

0xff,0xff, 0xff };

unsigned char buf10[] = {

0xff,0xff, 0xff };

unsigned char buf11[] = {

0xff,0xff, 0xff }; //SysTick interrupt happens every XX ms void SysTick_Handler(void){ Event=1; } /*中断服务函数ISR*/ void GPIO_PORT_D_ISR(void) { unsigned char ucKey; unsigned long ulStatus; ulStatus = GPIOPinIntStatus(GPIO_PORTD_BASE, true); GPIOPinIntClear(GPIO_PORTD_BASE, ulStatus); if(ulStatus & GPIO_PIN_7) { ucKey = GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_4); ucKey = ucKey>>1; ucValue = ucValue + ucKey; ucValue = ucValue<<1; i++; if(i==4) { i=0; Event_Key=1; oledkey[1]='\\0'; if((ucValue>>4)<10) oledkey[0] = (ucValue>>4) + 48; else oledkey[0] = (ucValue>>4) - 10 + 'A'; } } }

void Reset_Counter_Speed(int x) {

SysTickIntDisable(); SysTickDisable(); SysTickPeriodSet(SysCtlClockGet() / x*100);//x为输入的参数，控制计数频率，值越大频率越快 SysTickEnable(); SysTickIntEnable(); RIT128x96x4StringDraw(\ }

void Draw_Char_F(int x){ RIT128x96x4StringDraw(\ RIT128x96x4ImageDraw(buf1, x, 30, 20, 1);//big F RIT128x96x4ImageDraw(buf2, x, 32, 20, 1); RIT128x96x4ImageDraw(buf3, x, 34, 20, 1); RIT128x96x4ImageDraw(buf4, x, 36, 20, 1); RIT128x96x4ImageDraw(buf5, x, 38, 20, 1); RIT128x96x4ImageDraw(buf6, x, 40, 20, 1); }

void Draw_f(){ //画花盆 RIT128x96x4ImageDraw(bufp1, 0, 74,104, 1); RIT128x96x4ImageDraw(bufp2, 0, 75,104, 1); RIT128x96x4ImageDraw(bufp3, 0, 76,104, 1); RIT128x96x4ImageDraw(bufp4, 0, 77,104, 1); RIT128x96x4ImageDraw(bufp5, 0, 78,104, 1); RIT128x96x4ImageDraw(bufp6, 0, 79, 104,1); RIT128x96x4ImageDraw(bufp7, 0, 80,104, 1); RIT128x96x4ImageDraw(bufp8, 0, 81,104, 1); RIT128x96x4ImageDraw(bufp9, 0, 82,104, 1); RIT128x96x4ImageDraw(bufp10, 0,83,104, 1); RIT128x96x4ImageDraw(bufp11, 0,84,104, 1); RIT128x96x4ImageDraw(bufp12, 0,85,104, 1); }

void Draw_o(){//画花枝 for(z=56;z<=74;z++){ RIT128x96x4ImageDraw(buf020, 0,z,104, 1); } } void Draw_w(){ RIT128x96x4ImageDraw(bufs1, 52,65,24, 1); RIT128x96x4ImageDraw(bufs1, 52,66,24, 1); RIT128x96x4ImageDraw(bufs1, 52,67,24, 1); RIT128x96x4ImageDraw(bufs1, 52,68,24, 1); } void Draw_e(){ RIT128x96x4ImageDraw(bufl1, 18,60,32, 1);

RIT128x96x4ImageDraw(bufl2, 18,61,32, 1); RIT128x96x4ImageDraw(bufl3, 18,62,32, 1); RIT128x96x4ImageDraw(bufl4, 18,63,32, 1); RIT128x96x4ImageDraw(bufl5, 18,64,32, 1); RIT128x96x4ImageDraw(bufl6, 18,65,32, 1); } void Draw_r(){ RIT128x96x4ImageDraw(buf01, 0,18,104, 1); RIT128x96x4ImageDraw(buf02, 0,20,104, 1); RIT128x96x4ImageDraw(buf03, 0,22,104, 1); RIT128x96x4ImageDraw(buf04, 0,24,104, 1); RIT128x96x4ImageDraw(buf05, 0,26,104, 1); RIT128x96x4ImageDraw(buf06, 0,28,104, 1); RIT128x96x4ImageDraw(buf07, 0,30,104, 1); RIT128x96x4ImageDraw(buf08, 0,32,104, 1); RIT128x96x4ImageDraw(buf09, 0,34,104, 1); RIT128x96x4ImageDraw(buf010, 0,36,104, 1); RIT128x96x4ImageDraw(buf011, 0,38,104, 1); RIT128x96x4ImageDraw(buf012, 0,40,104, 1); RIT128x96x4ImageDraw(buf013, 0,42,104, 1); RIT128x96x4ImageDraw(buf014, 0,44,104, 1); RIT128x96x4ImageDraw(buf015, 0,46,104, 1); RIT128x96x4ImageDraw(buf016, 0,48,104, 1); RIT128x96x4ImageDraw(buf017, 0,50,104, 1); RIT128x96x4ImageDraw(buf018, 0,52,104, 1); RIT128x96x4ImageDraw(buf019, 0,54,104, 1); }

void Draw_l(){ SysTickIntDisable(); SysTickDisable(); SysTickPeriodSet(SysCtlClockGet() / 500000);//x为输入的参数，控制计数频率，值越大频率越快 SysTickEnable(); SysTickIntEnable(); }

/*unsigned char buf0[50]{ for(i=0;i

//int y2=0; //int count5=0; unsigned char buf[5]; unsigned char buff[5]; //unsigned char buf0[50]; int count=0; //int light=0; int i; int x=9; int v=1; int s=0; int s1=0; int t=10; //int v1=0; //x1=rand()?+5; //y1=rand()q+5; SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_8MHZ); RIT128x96x4Init(1000000); RIT128x96x4Clear(); //Setup and enables SysTick with interrupt(100HZ) // SysTickPeriodSet(10); /* SysTickPeriodSet(SysCtlClockGet()/100000); SysTickEnable(); SysTickIntEnable();*/ /*使能外设GPIO*/ SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC); SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD); /*设置GPIO为输入*/ GPIOPinTypeGPIOInput(GPIO_PORTD_BASE, GPIO_PIN_7); GPIOPinTypeGPIOInput(GPIO_PORTC_BASE, GPIO_PIN_4); /*使能中断*/ IntEnable(INT_GPIOD); IntMasterEnable();

GPIOPinIntEnable(GPIO_PORTD_BASE, GPIO_PIN_7); GPIOIntTypeSet(GPIO_PORTD_BASE, GPIO_PIN_7, GPIO_RISING_EDGE); while(1){ RIT128x96x4StringDraw(\ RIT128x96x4StringDraw(\ if(Event_Key){

//0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 RIT128x96x4Clear(); Event_Key=0; RIT128x96x4Clear(); sprintf(buff, \ RIT128x96x4StringDraw(oledkey, 60, 60, 15); switch(oledkey[0]) { case '0': Draw_Char_F(0); Flag = 0; break; case '1': Reset_Counter_Speed(1); Flag = 0; break; case '2': Draw_Char_F(16); Flag = 0; break; case '3': Reset_Counter_Speed(2); Flag = 0; break; case '4': Draw_Char_F(32); Flag = 0; break; case '5': Reset_Counter_Speed(4); Flag = 0; break; case '6': Draw_Char_F(48); Flag = 0; break; case '7': Reset_Counter_Speed(8); Flag = 0; break; case '8': Draw_Char_F(64); Flag = 0;

break; case '9': Reset_Counter_Speed(16); Flag = 0; break; case 'A': Draw_Char_F(80); Flag = 0; break; case 'B': Reset_Counter_Speed(32); Flag = 0; break; case 'C': Draw_Char_F(96); Flag = 0; break; case 'D': Reset_Counter_Speed(64); Flag = 0; break; case 'E': Draw_Char_F(108); Flag = 0; break; case 'F': Reset_Counter_Speed(128); Flag = 0; break; /* case '0': Draw_f(); Flag = 0; break; case'1': Draw_l(); Flag = 0; break; case '2': Draw_o(); Flag = 0; break; case '3': Draw_w(); Flag = 0;

break; case '4': Draw_e(); Flag = 0; break; case '5': Draw_r(); Flag = 0; break; default: break; */ } } if(Event) { RIT128x96x4StringDraw(\ RIT128x96x4StringDraw(\ RIT128x96x4Clear(); //x1=rand()?+5; //y1=rand()q+5; Event = 0;

if(count>400) count = 0; else count++; //if(count1>49) count1=0; //else count1++; //if(v1>4) v1=0; //else v1++; //if(light>15) //light=0; //else //light++; /*for(i=0;i=16&&t<=80){ if(s1==0) t++; if(s1==1) t--;

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