111 lines
No EOL
5.1 KiB
C++
111 lines
No EOL
5.1 KiB
C++
/**********************************************************************************/
|
|
/* Demo Program for: */
|
|
/* Board: BB-L298 */
|
|
/* Manufacture: OLIMEX */
|
|
/* COPYRIGHT (C) 2013 */
|
|
/* Designed by: Engineer Penko T. Bozhkov */
|
|
/* Module Name : main module */
|
|
/* File Name : main.c */
|
|
/* Revision : 1.0.0 (initial) */
|
|
/* Date : 11.09.2013 */
|
|
/* Built with Arduino C/C++ Compiler, version: 1.0.5 */
|
|
/**********************************************************************************/
|
|
|
|
// Description: This simple program is designed by using Olimexino-328 board and BB-L298 connected to it.
|
|
// |---------------------------------------------------------------------------|
|
|
// | The connections were as follows: |
|
|
// |--------------------------------|------------------------------------------|
|
|
// |Connector at Olimexino-328 | Connector at BB-L298 |
|
|
// |--------------------------------|------------------------------------------|
|
|
// | Power<3>, 5V | CTRL<1>, +5V |
|
|
// | Power<4>, GND | CTRL<8>, GND |
|
|
// | Power<5>, GND | PWR<2>, GND |
|
|
// | Power<6>, VIN(@12VDC) | PWR<1>, VIN |
|
|
// | DIGITAL<3>, D3 | CTRL<2>, Enable_A |
|
|
// | DIGITAL<4>, D4 | CTRL<3>, IN1 |
|
|
// | DIGITAL<5>, D5 | CTRL<4>, IN2 |
|
|
// | DIGITAL<6>, D6 | CTRL<5>, Enable_B |
|
|
// | DIGITAL<7>, D7 | CTRL<6>, IN3 |
|
|
// | DIGITAL<8>, D8 | CTRL<7>, IN4 |
|
|
// |--------------------------------|------------------------------------------|
|
|
// A 12VDC 2-phase step engine(rotates 18 degree per step) was connected to the BB-L298 board's connectors MT1 ans MT2.
|
|
// When the program is running, the motor makes one 360 degree clockwise rotation(if connected correctly).
|
|
// Then one 360 degree counterclockwise rotation. Afterwards the described cycle is constantly repeated.
|
|
// The step engine must be connected as follows: Coil<1>*(Begin) to OUT1; Coil<1>(End) to OUT2
|
|
// Coil<2>*(Begin) to OUT3; Coil<2>(End) to OUT4
|
|
|
|
|
|
// set pin numbers:
|
|
const int LED = 13;
|
|
const int Enable_A = 3; // A low-to-high transition on the STEP input sequences the translator and advances the motor one increment.
|
|
const int IN1 = 4; // Direction of rotation
|
|
const int IN2 = 5; // Mode of operation: Active/Sleep
|
|
const int Enable_B = 6; // Enable/Disable the Driver operation
|
|
const int IN3 = 7; // Reset when active turns off all of the FET outputs
|
|
const int IN4 = 8; // Microstep Select
|
|
const int Threshold = 20;
|
|
|
|
#define IN1_L digitalWrite(IN1, LOW);
|
|
#define IN1_H digitalWrite(IN1, HIGH);
|
|
#define IN2_L digitalWrite(IN2, LOW);
|
|
#define IN2_H digitalWrite(IN2, HIGH);
|
|
#define IN3_L digitalWrite(IN3, LOW);
|
|
#define IN3_H digitalWrite(IN3, HIGH);
|
|
#define IN4_L digitalWrite(IN4, LOW);
|
|
#define IN4_H digitalWrite(IN4, HIGH);
|
|
|
|
// Variables will change:
|
|
long previousMillis = 0; // will store last time STEP was updated
|
|
int counter = 0;
|
|
volatile int index = 1;
|
|
int DIR = 0;
|
|
long interval = 100; // interval at which to make a STEP
|
|
|
|
void setup() {
|
|
// set the digital pin as output:
|
|
pinMode(LED, OUTPUT);
|
|
pinMode(Enable_A, OUTPUT);
|
|
pinMode(Enable_B, OUTPUT);
|
|
pinMode(IN1, OUTPUT);
|
|
pinMode(IN2, OUTPUT);
|
|
pinMode(IN3, OUTPUT);
|
|
pinMode(IN4, OUTPUT);
|
|
|
|
//Set the state
|
|
digitalWrite(LED, LOW);
|
|
digitalWrite(Enable_A, HIGH);
|
|
digitalWrite(Enable_B, HIGH);
|
|
digitalWrite(IN1, LOW);
|
|
digitalWrite(IN2, LOW);
|
|
digitalWrite(IN3, LOW);
|
|
digitalWrite(IN4, LOW);
|
|
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
unsigned long currentMillis = millis();
|
|
|
|
if(currentMillis - previousMillis > interval) {
|
|
previousMillis = currentMillis;
|
|
|
|
counter++;
|
|
|
|
if( index == 1){ IN1_H; IN2_L; IN3_L; IN4_L; }
|
|
else if(index == 2){ IN1_L; IN2_L; IN3_H; IN4_L; }
|
|
else if(index == 3){ IN1_L; IN2_H; IN3_L; IN4_L; }
|
|
else if(index == 4){ IN1_L; IN2_L; IN3_L; IN4_H; }
|
|
|
|
if(counter >= Threshold){
|
|
counter = 0;
|
|
if(DIR){ DIR = 0; }
|
|
else{ DIR = 1; }
|
|
if( digitalRead(LED) == HIGH ){ digitalWrite(LED, LOW); }
|
|
else{ digitalWrite(LED, HIGH); }
|
|
}
|
|
|
|
if(DIR){ index++; if(index >4 ){ index = 1; } }
|
|
else{ index--; if(index <1 ){ index = 4; } }
|
|
|
|
}
|
|
} |