ARM LPC2148 TEMP+ACC+ULTRA
Revision 0:9b4382147415, committed 2020-12-15
- Comitter:
- prasadnoolu
- Date:
- Tue Dec 15 16:09:59 2020 +0000
- Commit message:
- ARM7 TEMP+ACC+ULTRASONIC
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ADXL345.lib Tue Dec 15 16:09:59 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/aberk/code/ADXL345/#bd8f0f20f433
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Dec 15 16:09:59 2020 +0000
@@ -0,0 +1,85 @@
+#include "ADXL345.h"
+#include "mbed.h"
+ADXL345 accelerometer(p5, p6, p7, p8); //ADXL 345 Pins SDA, SDO,SCL,CS
+Serial pc(USBTX, USBRX); // ENABLING SERIAL COMMUNCIATION WITH PC
+AnalogIn LM35(p15); // LM35 PIN
+DigitalOut trigger(p9); // TRIG PIN OF ULTRASONIC SENSOR
+DigitalOut aled(p11); //Accelerometer change indication led /Buzzer
+DigitalOut tled(p12); //Temperature reading change indication led /Buzzer
+DigitalOut oled(p13); //Obstacle detection indication led /Buzzer
+DigitalIn echo(p10); //ECHO PIN OF ULTRASONIC SENSOR
+DigitalIn safe(p14); //Safety switch if the user, fallsdown the aled will turn on ,if the user is safe,he can press the safety switch so that aled will turn off
+float dis = 0; //VARAIBLE TO CALCULATE DISTANCE
+int cf = 0; // CORRECTION FACTOR FOR UNIT CONVERSION
+Timer sonar; // TIMER INITIALIZATION
+int pxcut=100; //Mention your cut off Value in forward
+int nxcut=-100; //Mention your cut off Value in backward
+int pycut=100; //Mention your cut off Value in left
+int nycut=-100; //Mention your cut off Value in right
+int main() {
+ //---------Temperature sensor varaibles-------------//
+ float tvalue; //TEMPERATURE SENSOR VALUE READING
+ //------------------Accelerometer sensor VARIABLES-----------//
+ int readings[3] = {0, 0, 0}; //ACCELEROMETER 3-AXIS DATA
+ accelerometer.setPowerControl(0x00); //ENABLLING THE STAND BY MODE
+ accelerometer.setDataFormatControl(0x0B); //FULL RESOULTION, +/-16g, 4mg/LSB.
+ accelerometer.setDataRate(ADXL345_3200HZ); //SETTING DATA TRANSFER RATE OF ADXL345 TO 3.2kHz
+ accelerometer.setPowerControl(0x08); //Measurement mode.
+ //---------------------Ultrasonics Sensor VARIABLES----------------------//
+ sonar.reset(); //TIMER RESET
+ sonar.start(); // TIMER START
+ while (echo==2) {};
+ sonar.stop(); //TIMER STOP
+ cf = sonar.read_us(); // MICRO SECONDS CALCULATION
+
+
+ while (1) {
+
+ wait(0.1);
+
+ accelerometer.getOutput(readings);
+
+ //13-bit, sign extended values.
+ pc.printf("%i, %i, %i\n", (int16_t)readings[0], (int16_t)readings[1], (int16_t)readings[2]);
+
+ if ((int16_t)readings[0] > pxcut || (int16_t)readings[0] < nxcut ||(int16_t)readings[1] > pycut || (int16_t)readings[1] < nycut)
+ {
+ aled=1;
+ wait(1);
+ }
+ tvalue = ((LM35.read()*3276)/10);
+ if(tvalue >35)
+ {
+ tled=1;
+ wait(1);
+ }
+ pc.printf("Temp: %2.2f degree C\r\n", tvalue);
+ wait(1);
+ trigger = 1; // trigger sonar to send a ping
+ sonar.reset();
+ wait_us(10.0);
+ trigger = 0;
+ while (echo==0) {}; //wait for echo high
+ sonar.start(); //echo high, so start timer
+ while (echo==1) {}; //wait for echo low
+ sonar.stop(); //stop timer and read value
+ dis = (sonar.read_us()-cf)/58.0; //subtract software overhead timer delay and scale to cm
+ pc.printf(" %d cm \n\r",dis);
+ if(dis < 20 )
+ {
+ oled=1;
+ wait(1);
+ }
+ wait(0.2);//wait so that any echo(s) return before sending another ping
+ if (safe==1)
+ {
+ aled=0;
+ wait(1);
+
+ }
+ aled=0;
+ tled=0;
+ oled=0;
+ }
+
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Dec 15 16:09:59 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file