Other Parts Discussed in Thread: ENERGIA
Hello,
I am new to the tiva c connected launch pads and I am stuck now
I am trying to test the HC-SRO4 with the TI EK-TM4C1294XL but I cant even get the distance out of it
I am using energia and this is the code which I am using
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //Ultrasonic pins definition const int echo = 9, Trig = 10; long duration, cm; ///////////////////////////////////////////////////////////////////////////////////////// //Time update variables unsigned long LastUpdateMicrosecs = 0; unsigned long LastUpdateMillisecs = 0; unsigned long CurrentMicrosecs = 0; unsigned long MicrosecsSinceLastUpdate = 0; float SecondsSinceLastUpdate = 0; void setup() { //Init Serial port with 115200 buad rate Serial.begin(115200); SetupUltrasonic(); } ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //Setup UltrasonicsSensor() function void SetupUltrasonic() { pinMode(Trig, OUTPUT); pinMode(echo, INPUT); } ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //MAIN LOOP void loop() { Update_Ultra_Sonic(); delay(200); } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //Will update ultrasonic sensors through serial port void Update_Ultra_Sonic() { digitalWrite(Trig, LOW); delayMicroseconds(2); digitalWrite(Trig, HIGH); delayMicroseconds(10); digitalWrite(Trig, LOW); // The echo pin is used to read the signal from the PING))): a HIGH // pulse whose duration is the time (in microseconds) from the sending // of the ping to the reception of its echo off of an object. duration = pulseIn(echo, HIGH); // convert the time into a distance cm = microsecondsToCentimeters(duration); //Sending through serial port Serial.print("Distance="); Serial.print("\t"); Serial.print(cm); Serial.print("\n"); } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //Conversion of microsecond to centimeter long microsecondsToCentimeters(long microseconds) { // The speed of sound is 340 m/s or 29 microseconds per centimeter. // The ping travels out and back, so to find the distance of the // object we take half of the distance travelled. return microseconds / 29 / 2; } ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
the circuit is simple I am connecting the sensor to a level shifter in high level 5V and then from the other side which is 3.3V to the launch pads I am pretty sure that the connections are OK but I dont know what I missed