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unlockable
2023-07-06 16:45:00 +08:00
parent 3af54a2a52
commit 3fac49b296
1 changed files with 86 additions and 116 deletions
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202
Homework/Homework5/Encoder/Encoder.ino
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@@ -10,140 +10,110 @@ const unsigned long RESET_COUNT_PERIOD_IN_US = 50000;
const int EDGES_PER_CYCLE = 13;
const int REDUCTION_RATIO = 20;
int count = 0;
int forward_count = 0;
int backward_count = 0;
unsigned long aFallingTime = 0;
unsigned long bFallingTime = 0;
int current_rpm = 0;
double output_level = 0;
double err = 0, diff_err = 0, accumulate_err = 0;
const double Kp = 0.4, Ki = 0, Kd = 0.5;
const int goal_rpm = 100;
void setup() {
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(ENABLE, OUTPUT);
pinMode(A0, INPUT);
pinMode(A1, INPUT);
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
pinMode(ENCO_B, INPUT);
pinMode(ENCO_A, INPUT);
Serial.begin(115200);
Timer1.initialize();
Timer1.setPeriod(RESET_COUNT_PERIOD_IN_US);
Timer1.attachInterrupt(resetCountAndPrint);
// attachInterrupt(digitalPinToInterrupt(ENCO_A), onEncoAChange, CHANGE);
// attachInterrupt(digitalPinToInterrupt(ENCO_B), onEncoBChange, CHANGE);
attachInterrupt(digitalPinToInterrupt(ENCO_A), onEncoAFalling, FALLING);
// attachInterrupt(digitalPinToInterrupt(ENCO_B), onEncoBFalling, FALLING);
analogWrite(ENABLE, 50);
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(ENABLE, OUTPUT);
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
pinMode(ENCO_B, INPUT);
pinMode(ENCO_A, INPUT);
Serial.begin(9600);
Timer1.initialize();
Timer1.setPeriod(RESET_COUNT_PERIOD_IN_US);
Timer1.attachInterrupt(resetCountAndPrint);
attachInterrupt(digitalPinToInterrupt(ENCO_A), onEncoAChange, CHANGE);
attachInterrupt(digitalPinToInterrupt(ENCO_B), onEncoBChange, CHANGE);
analogWrite(ENABLE, output_level);
}
void loop() {
// int statusA = digitalRead(ENCO_A);
// int statusB = digitalRead(ENCO_B);
// // Serial.print("A: ");
// Serial.print('$');
// Serial.print(statusA);
// // Serial.print("B: ");
// Serial.print(' ');
// Serial.print(statusB);
// Serial.println(";");
// bFallingTime = micros();
// aFallingTime = micros();
// Serial.println(bFallingTime - aFallingTime);
// if (Serial.available()) {
// switch (Serial.read()) {
// case 's':
// analogWrite(ENABLE, 50);
// break;
// case 'p':
// analogWrite(ENABLE, 0);
// break;
// }
// }
}
void resetCountAndPrint() {
Serial.print("Rpm: ");
// Serial.println((double)count * 60 * 1000 * 1000 / RESET_COUNT_PERIOD_IN_US / REDUCTION_RATIO / EDGES_PER_CYCLE);
// Serial.print(forward_count);
// Serial.print(' ');
// Serial.print(backward_count);
// Serial.print(' ');
count = forward_count - backward_count;
Serial.print(forward_count);
Serial.print(' ');
Serial.print(backward_count);
Serial.print(' ');
Serial.println(count);
count = 0;
forward_count = 0;
backward_count = 0;
current_rpm = (double)count * 60 * 1000 * 1000 / RESET_COUNT_PERIOD_IN_US /
REDUCTION_RATIO / EDGES_PER_CYCLE / 4;
count = 0;
output_level += calculatePID();
if (output_level > 255) {
output_level = 255;
} else if (output_level < -255) {
output_level = -255;
}
if (output_level < 0) {
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
analogWrite(ENABLE, -output_level);
}
else {
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
analogWrite(ENABLE, output_level);
}
Serial.print("goal:");
Serial.print(goal_rpm);
Serial.print(" rpm:");
Serial.println(current_rpm);
}
void onEncoAFalling() {
if (digitalRead(ENCO_B) == LOW) {
backward_count++;
}
else {
forward_count++;
}
// aFallingTime = micros();
}
void onEncoBFalling() {
// if (digitalRead(ENCO_A) == LOW) {
// forward_count++;
// }
// else {
// backward_count++;
// }
bFallingTime = micros();
double calculatePID() {
diff_err = goal_rpm - current_rpm - err;
err = goal_rpm - current_rpm;
accumulate_err += err;
return Kp * err + Ki * accumulate_err + Kd * diff_err;
}
void onEncoAChange() {
if (LOW == digitalRead(ENCO_A)) {
if (LOW == digitalRead(ENCO_B)) {
// Serial.println("A 1");
// count--;
backward_count++;
}
if (HIGH == digitalRead(ENCO_B)) {
// Serial.println("A 2");
// count ++;
forward_count++;
}
if (LOW == digitalRead(ENCO_A)) {
if (LOW == digitalRead(ENCO_B)) {
count--;
}
else {
if (HIGH == digitalRead(ENCO_B)) {
// Serial.println("A 3");
// count--;
backward_count++;
}
if (LOW == digitalRead(ENCO_B)) {
// Serial.println("A 4");
// count++;
forward_count++;
}
if (HIGH == digitalRead(ENCO_B)) {
count++;
}
} else {
if (HIGH == digitalRead(ENCO_B)) {
count--;
}
if (LOW == digitalRead(ENCO_B)) {
count++;
}
}
}
void onEncoBChange() {
if (LOW == digitalRead(ENCO_B)) {
if (HIGH == digitalRead(ENCO_A)) {
// Seria/l.println("B 1");
// count--;
backward_count++;
}
if (LOW == digitalRead(ENCO_A)) {
// Serial.println("B 2");
// count++;
forward_count++;
}
if (LOW == digitalRead(ENCO_B)) {
if (HIGH == digitalRead(ENCO_A)) {
count--;
}
else {
if (LOW == digitalRead(ENCO_A)) {
// Serial.println("B 3");
// count--;
backward_count++;
}
if (HIGH == digitalRead(ENCO_A)) {
// Serial.println("B 4");
// count++;
forward_count++;
}
if (LOW == digitalRead(ENCO_A)) {
count++;
}
} else {
if (LOW == digitalRead(ENCO_A)) {
count--;
}
if (HIGH == digitalRead(ENCO_A)) {
count++;
}
}
}