mirror of https://github.com/arendst/Tasmota.git
78 lines
4.2 KiB
Plaintext
78 lines
4.2 KiB
Plaintext
// ---------------------------------------------------------------------------
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// Before attempting to use this sketch, please read the "Help with 15 Sensors Example Sketch":
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// https://bitbucket.org/teckel12/arduino-new-ping/wiki/Help%20with%2015%20Sensors%20Example%20Sketch
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//
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// This example code was used to successfully communicate with 15 ultrasonic sensors. You can adjust
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// the number of sensors in your project by changing SONAR_NUM and the number of NewPing objects in the
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// "sonar" array. You also need to change the pins for each sensor for the NewPing objects. Each sensor
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// is pinged at 33ms intervals. So, one cycle of all sensors takes 495ms (33 * 15 = 495ms). The results
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// are sent to the "oneSensorCycle" function which currently just displays the distance data. Your project
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// would normally process the sensor results in this function (for example, decide if a robot needs to
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// turn and call the turn function). Keep in mind this example is event-driven. Your complete sketch needs
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// to be written so there's no "delay" commands and the loop() cycles at faster than a 33ms rate. If other
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// processes take longer than 33ms, you'll need to increase PING_INTERVAL so it doesn't get behind.
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// ---------------------------------------------------------------------------
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#include <NewPing.h>
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#define SONAR_NUM 15 // Number of sensors.
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#define MAX_DISTANCE 200 // Maximum distance (in cm) to ping.
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#define PING_INTERVAL 33 // Milliseconds between sensor pings (29ms is about the min to avoid cross-sensor echo).
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unsigned long pingTimer[SONAR_NUM]; // Holds the times when the next ping should happen for each sensor.
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unsigned int cm[SONAR_NUM]; // Where the ping distances are stored.
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uint8_t currentSensor = 0; // Keeps track of which sensor is active.
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NewPing sonar[SONAR_NUM] = { // Sensor object array.
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NewPing(41, 42, MAX_DISTANCE), // Each sensor's trigger pin, echo pin, and max distance to ping.
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NewPing(43, 44, MAX_DISTANCE),
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NewPing(45, 20, MAX_DISTANCE),
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NewPing(21, 22, MAX_DISTANCE),
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NewPing(23, 24, MAX_DISTANCE),
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NewPing(25, 26, MAX_DISTANCE),
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NewPing(27, 28, MAX_DISTANCE),
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NewPing(29, 30, MAX_DISTANCE),
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NewPing(31, 32, MAX_DISTANCE),
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NewPing(34, 33, MAX_DISTANCE),
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NewPing(35, 36, MAX_DISTANCE),
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NewPing(37, 38, MAX_DISTANCE),
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NewPing(39, 40, MAX_DISTANCE),
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NewPing(50, 51, MAX_DISTANCE),
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NewPing(52, 53, MAX_DISTANCE)
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};
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void setup() {
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Serial.begin(115200);
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pingTimer[0] = millis() + 75; // First ping starts at 75ms, gives time for the Arduino to chill before starting.
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for (uint8_t i = 1; i < SONAR_NUM; i++) // Set the starting time for each sensor.
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pingTimer[i] = pingTimer[i - 1] + PING_INTERVAL;
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}
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void loop() {
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for (uint8_t i = 0; i < SONAR_NUM; i++) { // Loop through all the sensors.
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if (millis() >= pingTimer[i]) { // Is it this sensor's time to ping?
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pingTimer[i] += PING_INTERVAL * SONAR_NUM; // Set next time this sensor will be pinged.
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if (i == 0 && currentSensor == SONAR_NUM - 1) oneSensorCycle(); // Sensor ping cycle complete, do something with the results.
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sonar[currentSensor].timer_stop(); // Make sure previous timer is canceled before starting a new ping (insurance).
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currentSensor = i; // Sensor being accessed.
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cm[currentSensor] = 0; // Make distance zero in case there's no ping echo for this sensor.
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sonar[currentSensor].ping_timer(echoCheck); // Do the ping (processing continues, interrupt will call echoCheck to look for echo).
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}
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}
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// Other code that *DOESN'T* analyze ping results can go here.
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}
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void echoCheck() { // If ping received, set the sensor distance to array.
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if (sonar[currentSensor].check_timer())
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cm[currentSensor] = sonar[currentSensor].ping_result / US_ROUNDTRIP_CM;
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}
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void oneSensorCycle() { // Sensor ping cycle complete, do something with the results.
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// The following code would be replaced with your code that does something with the ping results.
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for (uint8_t i = 0; i < SONAR_NUM; i++) {
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Serial.print(i);
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Serial.print("=");
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Serial.print(cm[i]);
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Serial.print("cm ");
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}
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Serial.println();
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} |