MSP430G2452
製作點焊機需要以下零件：MSP430G2452微控制器
16x2字符LCD顯示器
鍵盤矩陣模塊
驅動兩個步進馬達的L298N模塊
溫度感應器（例如K型熱電偶）
MOS管和繼電器模塊
12V DC電源和5V DC電源
電路板，連接器和電線
下面是MSP430G2452微控制器的引腳分配：
P1.0 - 焊接控制信號輸出
P1.1 - 溫度感應器數據輸入
P1.2 - 步進馬達驅動器使能輸入
P1.3 - 步進馬達驅動器方向輸入
P1.4 - 步進馬達驅動器步進輸入
P1.5 - LCD顯示器RS輸入
P1.6 - LCD顯示器EN輸入
P1.7 - 鍵盤矩陣列輸入
以下是MSP430G2452微控制器的程式碼示例，可以用於控制點焊機的各種操作。
這是一個示例，可以根據需要進行修改和擴展：
#include <msp430.h>
#define EN BIT6 //EN接口
#define RS BIT5 //RS接口
#define D4 BIT4 //DB4接口
#define D5 BIT3 //DB5接口
#define D6 BIT2 //DB6接口
#define D7 BIT1 //DB7接口
#define PULSE_WIDTH 500 // 焊接控制信號脈衝寬度
#define WAIT_TIME 500 // 等待時間
unsigned int read_adc(unsigned int channel)
{
ADC10CTL0 &= ~ENC;
while (ADC10CTL1 & BUSY);
ADC10CTL1 = (channel << 12) | ADC10DIV_0 | ADC10SSEL_3 | CONSEQ_0;
ADC10CTL0 |= ENC | ADC10SC;
while (ADC10CTL1 & BUSY);
return ADC10MEM;
}
void lcd_init(void)
{
P1OUT &= ~(RS + EN + D4 + D5 + D6 + D7);
P1DIR |= (RS + EN + D4 + D5 + D6 + D7);
__delay_cycles(50000);
lcd_write_cmd(0x33);
lcd_write_cmd(0x32);
lcd_write_cmd(0x28);
lcd_write_cmd(0x0C);
lcd_write_cmd(0x01);
__delay_cycles(2000);
}
void lcd_write_cmd(char cmd)
{
P1OUT &= ~(RS + D4 + D5 + D6 + D7);
P1OUT |= (cmd & 0xF0) >> 1;
P1OUT |= EN;
__delay_cycles(1000);
P1OUT &= ~EN;
__delay_cycles(1000);
P1OUT &= ~(D4 + D5 + D6 + D7);
P1OUT |= (cmd & 0x0F) << 3;
P1OUT |= EN;
__delay_cycles(1000);
P1OUT &= ~EN;
__delay_cycles(1000);
}
void lcd_write_data(char data)
{
P1OUT |= RS;
P1OUT &= ~(D4 + D5 + D6 + D7);
P1OUT |= (data & 0xF0) >> 1;
P1OUT |= EN;
__delay_cycles(1000);
P1OUT &= ~EN;
__delay_cycles(1000);
P1OUT &= ~(D4 + D5 + D6 + D7);
P1OUT |= (data & 0x0F) << 3;
P1OUT |= EN;
__delay_cycles(1000);
P1OUT &= ~EN;
__delay_cycles(1000);
}
void lcd_set_cursor(char row, char col)
{
char address;
if (row == 0) {
address = 0x80 + col;
} else {
address = 0xC0 + col;
}
lcd_write_cmd(address);
}
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; //關閉看門狗定時器
BCSCTL1 = CALBC1_1MHZ;
DCOCTL = CALDCO_1MHZ; //設置DCO頻率為1MHZ
P1DIR |= BIT0;
P1OUT &= ~BIT0;
P1SEL |= BIT1;
ADC10CTL0 = SREF_1 + ADC10SHT_2 + ADC10ON;
ADC10AE0 |= BIT1;
lcd_init();
while (1) {
unsigned int temp = read_adc(1);
char buffer;
sprintf(buffer, "%4dC", temp / 10);
lcd_set_cursor(0, 0);
lcd_write_data('T');
lcd_write_data(':');
lcd_set_cursor(0, 2);
lcd_write_data(buffer);
lcd_write_data(buffer);
lcd_write_data(buffer);
lcd_write_data(buffer);
lcd_set_cursor(0, 6);
lcd_write_data(buffer);
lcd_write_data(buffer);
if (temp > 300) { //如果溫度高於300C，則啟動點焊
P1OUT |= BIT0; //發送焊接控制信號
__delay_cycles(PULSE_WIDTH);
P1OUT &= ~BIT0;
__delay_cycles(WAIT_TIME);
} else {
P1OUT &= ~BIT0; //停止焊接控制信號
}
}
}
這段程式碼使用ADC10模塊讀取從溫度感應器接收到的溫度數據，並使用16x2字符LCD顯示器顯示該數據。
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