基于430单片机的科学计算器C语言设计代码

好的，以下是一个基于430单片机的科学计算器C语言设计代码的示例：

#include <msp430.h>
#include <stdio.h>
#include <math.h>

#define LCD_RS BIT0
#define LCD_RW BIT1
#define LCD_E BIT2
#define LCD_DB4 BIT4
#define LCD_DB5 BIT5
#define LCD_DB6 BIT6
#define LCD_DB7 BIT7

void LCD_init();
void LCD_command(char command);
void LCD_data(char data);
void LCD_string(char *string);
void LCD_clear();
void LCD_gotoxy(char x, char y);
void LCD_integer(int number);
void LCD_float(float number);

void delay_ms(unsigned int ms);

int main() {
    char op;
    float num1, num2, result;

    WDTCTL = WDTPW + WDTHOLD;
    P1DIR |= LCD_RS + LCD_RW + LCD_E + LCD_DB4 + LCD_DB5 + LCD_DB6 + LCD_DB7;
    LCD_init();

    LCD_string("Scientific Calc");
    LCD_gotoxy(0, 1);
    LCD_string("by Your Name");
    delay_ms(2000);
    LCD_clear();

    while(1) {
        LCD_string("Enter operator:");
        LCD_gotoxy(0, 1);
        LCD_string("+, -, *, /, sin, cos, tan, log, exp");

        scanf("%c", &op);

        if(op == '+' || op == '-' || op == '*' || op == '/') {
            LCD_string("Enter first num:");
            scanf("%f", &num1);
            LCD_string("Enter second num:");
            scanf("%f", &num2);

            switch(op) {
                case '+':
                    result = num1 + num2;
                    break;
                case '-':
                    result = num1 - num2;
                    break;
                case '*':
                    result = num1 * num2;
                    break;
                case '/':
                    result = num1 / num2;
                    break;
                default:
                    LCD_string("Invalid operator");
                    delay_ms(2000);
                    LCD_clear();
                    break;
            }

            LCD_string("Result:");
            LCD_float(result);
            delay_ms(2000);
            LCD_clear();
        }
        else if(op == 'sin' || op == 'cos' || op == 'tan' || op == 'log' || op == 'exp') {
            LCD_string("Enter num:");
            scanf("%f", &num1);

            switch(op) {
                case 'sin':
                    result = sin(num1);
                    break;
                case 'cos':
                    result = cos(num1);
                    break;
                case 'tan':
                    result = tan(num1);
                    break;
                case 'log':
                    result = log(num1);
                    break;
                case 'exp':
                    result = exp(num1);
                    break;
                default:
                    LCD_string("Invalid operator");
                    delay_ms(2000);
                    LCD_clear();
                    break;
            }

            LCD_string("Result:");
            LCD_float(result);
            delay_ms(2000);
            LCD_clear();
        }
        else {
            LCD_string("Invalid operator");
            delay_ms(2000);
            LCD_clear();
        }
    }

    return 0;
}

void LCD_init() {
    P1OUT &= ~(LCD_RS + LCD_RW + LCD_E + LCD_DB4 + LCD_DB5 + LCD_DB6 + LCD_DB7);
    P1OUT |= LCD_DB5;
    delay_ms(15);
    LCD_command(0x03);
    delay_ms(5);
    LCD_command(0x03);
    delay_ms(1);
    LCD_command(0x03);
    delay_ms(1);
    LCD_command(0x02);
    LCD_command(0x28);
    LCD_command(0x0C);
    LCD_command(0x06);
    LCD_command(0x01);
    delay_ms(2);
}

void LCD_command(char command) {
    P1OUT &= ~LCD_RS;
    P1OUT &= ~LCD_RW;
    P1OUT |= LCD_E;
    P1OUT = (P1OUT & 0x0F) | ((command >> 4) & 0xF0);
    P1OUT &= ~LCD_E;
    delay_ms(1);
    P1OUT |= LCD_E;
    P1OUT = (P1OUT & 0x0F) | (command & 0xF0);
    P1OUT &= ~LCD_E;
    delay_ms(1);
}

void LCD_data(char data) {
    P1OUT |= LCD_RS;
    P1OUT &= ~LCD_RW;
    P1OUT |= LCD_E;
    P1OUT = (P1OUT & 0x0F) | ((data >> 4) & 0xF0);
    P1OUT &= ~LCD_E;
    delay_ms(1);
    P1OUT |= LCD_E;
    P1OUT = (P1OUT & 0x0F) | (data & 0xF0);
    P1OUT &= ~LCD_E;
    delay_ms(1);
}

void LCD_string(char *string) {
    while(*string) {
        LCD_data(*string++);
    }
}

void LCD_clear() {
    LCD_command(0x01);
    delay_ms(2);
}

void LCD_gotoxy(char x, char y) {
    char address;

    if(y == 0) {
        address = x;
    }
    else {
        address = x + 0x40;
    }

    LCD_command(0x80 | address);
}

void LCD_integer(int number) {
    char buffer[16];
    sprintf(buffer, "%d", number);
    LCD_string(buffer);
}

void LCD_float(float number) {
    char buffer[16];
    sprintf(buffer, "%.2f", number);
    LCD_string(buffer);
}

void delay_ms(unsigned int ms) {
    unsigned int i, j;

    for(i = 0; i < ms; i++) {
        for(j = 0; j < 1000; j++) {
            __delay_cycles(1000);
        }
    }
}

这个示例代码使用了430单片机控制LCD显示屏，并支持基本的加减乘除、三角函数、对数函数、指数函数等功能。您可以根据自己的需求进行修改和扩展。需要注意的是，由于430单片机的处理能力有限，因此可能需要对代码进行优化，以提高计算器的响应速度和稳定性。