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[LOWCAR] Ultrasonic Sensor Code Completed #287

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Merged
BrandonWong14 merged 1 commit into from
Apr 12, 2025
Merged

[LOWCAR] Ultrasonic Sensor Code Completed #287

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30 changes: 17 additions & 13 deletions lowcar/devices/UltrasonicSensor/UltrasonicSensor.cpp
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Original file line number Diff line number Diff line change
@@ -1,17 +1,29 @@
#include "UltrasonicSensor.h"

// pin definitions for the ultrasonic sensor
#define TRIG_PIN 16
#define ECHO_PIN 14
#define TRIG_PIN 14
#define ECHO_PIN 16

UltrasonicSensor::UltrasonicSensor() : Device(DeviceType::ULTRASONIC_SENSOR, 17) {
;
this->distance = 0;
}

size_t UltrasonicSensor::device_read(uint8_t param, uint8_t* data_buf) {
float* float_buf = (float*) data_buf;
float_buf[0] = this->distance;

return sizeof(float);
}

void UltrasonicSensor::device_enable() {
pinMode(TRIG_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
}

void UltrasonicSensor::device_actions() {
// trigger the ultrasonic pulse
digitalWrite(TRIG_PIN, LOW);
delayMicroseconds(2);
delayMicroseconds(10);

digitalWrite(TRIG_PIN, HIGH);
delayMicroseconds(10);
Expand All @@ -20,13 +32,5 @@ size_t UltrasonicSensor::device_read(uint8_t param, uint8_t* data_buf) {
long duration = pulseIn(ECHO_PIN, HIGH);
float distance = duration * 0.034f / 2.0f; // convert to cm

float* float_buf = (float*) data_buf;
float_buf[0] = distance;

return sizeof(float);
}

void UltrasonicSensor::device_enable() {
pinMode(TRIG_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
this->distance = distance;
}
4 changes: 2 additions & 2 deletions lowcar/devices/UltrasonicSensor/UltrasonicSensor.h
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Original file line number Diff line number Diff line change
Expand Up @@ -12,10 +12,10 @@ class UltrasonicSensor : public Device {

virtual size_t device_read(uint8_t param, uint8_t* data_buf);
virtual void device_enable();
virtual void device_actions();

private:
static uint8_t trigPin;
static uint8_t echoPin;
float distance;
};

#endif