Saad Khan
Code for mbed running GPS and IMU to calculate speed and notify if too high or acceleration too high. By Ibrahim Khan and Saad Khan
Dependencies: 4DGL-uLCD-SE GPS LSM9DS1_Library_cal mbed wave_player SDFileSystem
By Ibrahim Khan and Saad Khan. Part of ECE4180 final project.
Revision 2:95d21fb43f6f, committed 2016-12-11
- Comitter:
- gotmilk
- Date:
- Sun Dec 11 03:50:17 2016 +0000
- Parent:
- 1:40becbadfee3
- Commit message:
- one mbed - working version alhamdulillah
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Sun Dec 11 03:50:17 2016 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/mbed_official/code/SDFileSystem/#8db0d3b02cec
--- a/main.cpp Fri Dec 09 07:41:08 2016 +0000
+++ b/main.cpp Sun Dec 11 03:50:17 2016 +0000
@@ -3,16 +3,19 @@
#include "GPS.h"
#include "uLCD_4DGL.h"
#include "LSM9DS1.h"
+#include "SDFileSystem.h"
+#include "wave_player.h"
#define M_PI 3.141592653589793238462
Serial pc(USBTX, USBRX);
GPS gps(p13, p14);
-DigitalOut led2(LED2);
+DigitalOut led2(LED1);
uLCD_4DGL uLCD(p28,p27,p30);
Timer t;
-DigitalOut fast(p21);
-DigitalOut turn(p22);
+SDFileSystem sd(p5, p6, p7, p8, "sd");
+AnalogOut DACout(p18);
+wave_player waver(&DACout);
float oldlat, oldlong, oldtime;
@@ -43,9 +46,9 @@
void checkgps()
{
- uLCD.cls();
uLCD.locate(0,1);
- if(!gps.sample()) {
+ if(gps.sample()) {
+ time_t seconds = time(NULL);
float newtime = t.read();
float newlat = gps.latitude;
float newlong = gps.longitude;
@@ -53,31 +56,36 @@
float timediff = newtime - oldtime;
float speed = dist/timediff; //meters per second
float speed_mph = (speed * 2.23);
- led2 = 1;
uLCD.printf("Longitude: %f degrees\n\rLatitude: %f degrees\n\r", newlong, newlat);
uLCD.printf("Distance: %f\n\r", dist);
uLCD.printf("D-time: %f\n\r", timediff);
uLCD.printf("Speed in M/ph: %f\n\r", speed_mph);
if (speed_mph > 50 && speed_mph < 100) {
- fast = 1;
- wait(0.25);
+ FILE *wave_file;
+ wave_file=fopen("/sd/fast.wav","r");
+ waver.play(wave_file);
+ fclose(wave_file);
+ FILE *fp = fopen("/sd/speedlog.txt", "w");
+ if(fp == NULL) {
+ uLCD.printf("Can't open file");
+ }
+ fprintf(fp, "Driver drove above limit on %s\n", ctime(&seconds));
+ fclose(fp);
}
- fast = 0;
oldlat = newlat;
oldlong = newlong;
oldtime = newtime;
} else {
uLCD.printf("Oh Dear! No lock :(\n\r");
- led2 = 0;
}
}
int main()
{
+ time_t seconds = time(NULL);
+ uLCD.cls();
uLCD.printf("start main\r\n");
LSM9DS1 IMU(p9, p10, 0xD6, 0x3C);
- fast = 0;
- turn = 0;
IMU.begin();
if (!IMU.begin()) {
uLCD.printf("Failed to communicate with LSM9DS1.\n");
@@ -90,7 +98,7 @@
oldtime = t.read();
oldlat = gps.latitude;
oldlong = gps.longitude;
- checkgps();
+ //checkgps();
while(1) {
newtime = t.read();
if ((newtime-oldtime)>300) {
@@ -102,21 +110,27 @@
IMU.readAccel();
display++;
if (display%100==0) {
- uLCD.locate(0,9);
+ uLCD.locate(0,10);
accel = IMU.calcAccel(IMU.ay);
uLCD.printf("Y-acceleration in g's: %2f\n", accel);
if (abs(accel) > .6 && abs(accel) < 1) {
counter++;
+ } else {
+ counter = 0;
}
- else {
- counter = 0;
- }
if (counter >= 2) {
- turn = 1;
+ FILE *wave_file;
+ wave_file=fopen("/sd/turn.wav","r");
+ waver.play(wave_file);
+ fclose(wave_file);
+ FILE *fp = fopen("/sd/speedlog.txt", "w");
+ if(fp == NULL) {
+ uLCD.printf("Can't open file");
+ }
+ fprintf(fp, "Driver turned above g-limit on on %s\n", ctime(&seconds));
+ fclose(fp);
counter = 0;
- wait(0.25);
}
- turn = 0;
}
}
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wave_player.lib Sun Dec 11 03:50:17 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/sravet/code/wave_player/#acc3e18e77ad