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標題: PIC30F4013+PIC12F1822製作簡易PLC [打印本頁]

作者: 洪嵐峰 時間: 2023-4-12 05:54
標題: PIC30F4013+PIC12F1822製作簡易PLC
PIC30F4013+PIC12F1822製作簡易PLC。
此PLC可以控制3個輸出，並從3個輸入中讀取數據。
在此示例中，PIC30F4013負責控制邏輯，而PIC12F1822則負責輸入/輸出。這只是一個簡單的示例，實際應用時需要根據具體需求進行修改和優化。

零件清單：

PIC30F4013單片機
PIC12F1822單片機
3個LED
3個按鈕
電阻、電容等其它零件
腳位配置：

以下是PIC30F4013和PIC12F1822的腳位配置，其中PIC30F4013使用的是PDIP封裝，而PIC12F1822使用的是SOIC封裝。腳位號碼可能因不同封裝而有所不同，請根據具體封裝和手冊進行配置。

PIC30F4013:

Pin 1 (MCLR)       -> VDD
Pin 2 (RA0/AN0)    -> Button 1
Pin 3 (RA1/AN1)    -> Button 2
Pin 4 (RA2/AN2)    -> Button 3
Pin 5 (VSS)          -> GND
Pin 6 (RB0/INT0)    -> LED 1
Pin 7 (RB1/INT1)    -> LED 2
Pin 8 (RB2/INT2)    -> LED 3
Pin 9 (RB3)          -> PIC12F1822 data out
Pin 10 (RB4)       -> PIC12F1822 data in
Pin 11 (RB5)       -> PIC12F1822 clock
Pin 12 (RB6)       -> PIC12F1822 chip select
Pin 13 (RB7)       -> PIC12F1822 status
Pin 14 (AVDD)       -> VDD
Pin 15 (AVSS)       -> GND
Pin 16 (VDD)       -> VDD

PIC12F1822:

Pin 1 (VPP)          -> VDD
Pin 2 (RA5/ICSPDAT) -> PIC30F4013 data in
Pin 3 (RA4/ICSPCLK) -> PIC30F4013 clock
Pin 4 (RA3/T0CKI)    -> Not used
Pin 5 (RC5)          -> Not used
Pin 6 (RC4)          -> Not used
Pin 7 (RC3)          -> Not used
Pin 8 (RC6)          -> Not used
Pin 9 (RC7)          -> Not used
Pin 10 (VSS)       -> GND
Pin 11 (RA2/AN2)    -> Not used
Pin 12 (RA1/AN1)    -> Not used
Pin 13 (RA0/AN0)    -> Not used
Pin 14 (RC0) -> Not used
Pin 15 (RC1) -> Not used
Pin 16 (RC2) -> Not used
Pin 17 (RB7/PGD) -> Not used
Pin 18 (RB6/PGC) -> Not used
Pin 19 (RB5) -> PIC30F4013 status
Pin 20 (RB4) -> PIC30F4013 data out
Pin 21 (RB3) -> PIC30F4013 data in
Pin 22 (RB2) -> Not used
Pin 23 (RB1) -> Not used
Pin 24 (RB0) -> Not used

程式碼：

以下是使用MPLAB X IDE和XC16編譯器開發的程式碼。
程式碼中使用了兩個.c文件和一個.h文件，其中plc.c包含了PLC的主要邏輯，io.c包含了與PIC12F1822進行通信的函數，plc.h包含了一些宏定義和函數聲明。
實際應用時需要根據具體需求進行修改和優化。

plc.h：

#ifndef PLC_H
#define PLC_H

// Macros for LED pins
#define LED_1 RB0
#define LED_2 RB1
#define LED_3 RB2

// Macros for button pins
#define BUTTON_1 RA0
#define BUTTON_2 RA1
#define BUTTON_3 RA2

// Function prototypes
void plc_init(void);
void plc_run(void);

#endif // PLC_Hplc.c：

#include "plc.h"
#include "io.h"

// Global variables
unsigned char inputs = 0;
unsigned char outputs = 0;

// Initialize PLC
void plc_init(void) {
// Configure LED pins as outputs
TRISBbits.TRISB0 = 0; // LED 1
TRISBbits.TRISB1 = 0; // LED 2
TRISBbits.TRISB2 = 0; // LED 3

// Configure button pins as inputs
TRISAbits.TRISA0 = 1; // Button 1
TRISAbits.TRISA1 = 1; // Button 2
TRISAbits.TRISA2 = 1; // Button 3

// Initialize I/O communication with PIC12F1822
io_init();
}

// Main PLC logic
void plc_run(void) {
// Read inputs
inputs = (BUTTON_1 << 0) | (BUTTON_2 << 1) | (BUTTON_3 << 2);

// Update outputs based on inputs
switch (inputs) {
case 0b000:    // No buttons pressed
      outputs = 0b000;
      break;
case 0b001:    // Button 1 pressed
      outputs = 0b001;
      break;
case 0b010:    // Button 2 pressed
      outputs = 0b010;
      break;
case 0b011:    // Button 1 and 2 pressed
      outputs = 0b011;
      break;
case 0b100: // Button 3 pressed

outputs = 0b100;
break;
case 0b101: // Button 1 and 3 pressed
outputs = 0b101;
break;
case 0b110: // Button 2 and 3 pressed
outputs = 0b110;
break;
case 0b111: // All buttons pressed
outputs = 0b111;
break;
}

// Write outputs
LED_1 = (outputs >> 0) & 0x01;
LED_2 = (outputs >> 1) & 0x01;
LED_3 = (outputs >> 2) & 0x01;

// Send data to PIC12F1822
io_send_data(outputs);

// Receive data from PIC12F1822
inputs = io_receive_data();

// Update outputs based on received data
LED_1 = (inputs >> 0) & 0x01;
LED_2 = (inputs >> 1) & 0x01;
LED_3 = (inputs >> 2) & 0x01;
}

io.h：

#ifndef IO_H
#define IO_H

// Function prototypes
void io_init(void);
void io_send_data(unsigned char data);
unsigned char io_receive_data(void);

#endif // IO_Hio.c：
#include "io.h"
#include <xc.h>

// Initialize I/O communication with PIC12F1822
void io_init(void) {
// Configure data in pin as input
TRISBbits.TRISB3 = 1;

// Configure data out pin as output
TRISBbits.TRISB4 = 0;

// Configure status pin as input
TRISBbits.TRISB5 = 1;

// Set data out pin low
LATBbits.LATB4 = 0;
}

// Send data to PIC12F1822
void io_send_data(unsigned char data) {
// Set data out pin low
LATBbits.LATB4 = 0;

// Wait for status pin to go low
while (PORTBbits.RB5);

// Send data bit by bit
for (unsigned char i = 0; i < 8; i++) {
// Set data out pin to next bit
LATBbits.LATB4 = (data >> i) & 0x01;

// Wait for clock pulse
__delay_us(1);

// Set clock pin high
LATBbits.LATB3 = 1;

// Wait for clock pulse
__delay_us(1);

// Set clock pin low
LATBbits.LATB3 = 0;
}

// Wait for status pin to go high
while (!PORTBbits.RB5);

// Set data out pin low
LATBbits.LATB4 = 0;
}

// Receive data from PIC12F1822
unsigned char io_receive_data(void) {
// Set data out pin low
LATBbits.LATB4 = 0;

// Wait for status pin to go low
while (PORTBbits.RB5);

// Receive data bit by bit
unsigned char data = 0;
for (unsigned char i = 0; i < 8; i++) {
// Wait for clock pulse
__delay_us(1);

// Set clock pin high
LATBbits.LATB3 = 1;

// Read data in pin
data |= (PORTBbits.RB3 << i);

// Wait for clock pulse
__delay_us(1);

// Set clock pin low
LATBbits.LATB3 = 0;
}

// Wait for status pin to go high
while (!PORTBbits.RB5);

// Set data out pin low
LATBbits.LATB4 = 0;

return data;
}

以上就是這個PLC的程式碼，注意一定要在使用之前先確定每個腳位的連接是否正確，並且調整程式碼中的設定參數以符合你的實際應用需求。

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