基于MSP430F149电 子 秤设计论文_附电路图 推荐.docVIP

附录1 电路原理图 附录2 程序 /*********************************************************** 程序功能：在12864液晶上显示重量 ----------------------------------------------------------- ---------------------------------------------------- 测试说明：观察液晶显示 ***********************************************************/ #include msp430x14x.h typedef unsigned char uchar; typedef unsigned int uint; extern const unsigned char shuzi_table[]; float e; /***************全局变量***************/ uchar key_Pressed; //按键是否被按下:1--是，0--否 uchar key_val; //存放键值 uchar key_Flag; //按键是否已放开：1--是，0--否 /*设置键盘逻辑键值与程序计算键值的映射*/ uchar key_Map[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}; #define LCD_DataIn P4DIR=0x00 //数据口方向设置为输入 #define LCD_DataOut P4DIR=0xff //数据口方向设置为输出 #define LCD2MCU_Data P4IN #define MCU2LCD_Data P4OUT #define LCD_CMDOut P3DIR|=0x07 //P3口的低三位设置为输出 #define LCD_RS_H P3OUT|=BIT0 //P3.0 #define LCD_RS_L P3OUT=~BIT0 //P3.0 #define LCD_RW_H P3OUT|=BIT1 //P3.1 #define LCD_RW_L P3OUT=~BIT1 //P3.1 #define LCD_EN_H P3OUT|=BIT2 //P3.2 #define LCD_EN_L P3OUT=~BIT2 //P3.2 /******************************************* 写入内容待显示内容 ********************************************/ const uchar hang1[] = {小小苏电子称系统}; const uchar hang2[] = {净重: g }; const uchar hang3[] = {总价: 元}; const uchar hang4[] = {单价 /Kg}; const uchar hang5[] = {萝卜};const uchar hang6[] = {豆角}; const uchar hang7[] = {土豆};const uchar hang8[] = {白菜}; const uchar hang9[] = {苹果};const uchar hang10[] = {香蕉}; const uchar hang11[] = {橘子};const uchar hang12[] = {桃子}; const uchar hang13[] = {猪肉};const uchar hang14[] = {羊肉}; const uchar hang15[] = {牛肉};const uchar hang16[] = {鸡肉}; const uchar hang17[] = {山药};const uchar hang18[] = {生姜}; const uchar hang19[] = {木耳}; /******************************************* 函数名称：Init_Keypad 功 能：初始化扫描键盘的IO端口 参 数：无 返回值 ：无 ********************************************/ void Init_Keypad(void) { P1DIR = 0xf0;