Kenneth Chan
Andrew Lai
Jon Li
Jesse Mwaura
1
System Architecture
void insertNode(Node** head, int x, int y){
Node* temp = malloc(sizeof(Node));
if(!temp){
printf("malloc of tmp failed");
exit(0);
}
}
void calcline(Node* head);
Node* detect(IplImage* im, Node* head);
int initializeIPC();
int publishMessage(float b, float invM);
void OPEN_CV_DATA_MSG_handler(MSG_INSTANCE msgRef, BYTE_ARRAY callData,void *clientData);
int main( int argc, char** argv ){
/* first we'll connect to central */
printf("Initializing IPC\n");
if(-1 == initializeIPC()){
printf("Couldn't initialize IPC...\n");
return -1;
}
printf("IPC is been set up\n");
Internet
/* all done */
printf("This program is now finished.\n");
printf("If you were running the telemetryManager,\n");
printf("some new message should appear in today's log.\n");
Wi-Fi Module
Parser
LCD
Accelerometer
User
2
Test Cases
€
Boot Time
y
y
€
Hard Shutdown
y
y
€
y
Internet connectivity measured in unit of signal strength, bandwidth and latency
Fault-free
Displaying text
y
y
€
Device must not corrupt saved files or settings in the event of hard shutdown
Failure-injected
Wireless Bandwidth/Latency
y
€
Device must initialize correctly and in a timely manner
Fault-free
Device must be able to display text to convey information
Fault-free
Retrieve RSS feed
y
y
Device must be able to retrieve an xml file to parse
Fault-free
3
Test Cases (Continued)
€
Soft Shutdown
y
y
€
Display Graphics
y
y
€
y
y
Device must be able to read accelerometer information to switch feeds
Fault-free
Interpreting Accelerometer data
y
y
€
Device must be able to parse xml file to display pertinent information
Fault-free
Interface with accelerometer w/ gumstix
y
€
GUI is more user friendly
Fault-free
Parse RSS feed
y
€
Device must shutdown gracefully and store all settings
Fault-free
Need accelerometer data to switch between feeds.
Fault-free
Loss of Network Connection
y
y
Device must be able to re-establish network connection if it is lost
Failure-injected
4
Metrics
€
Time required to:
y Boot up
y Shutdown
y (Re)acquire network connection
y Retrieve and parse RSS file
Latency on response to user input
€ Sensitivity of accelerometer
€ Freshness/staleness of feeds
€
5
Initial Results
Time to ___
90
80
70
Time (sec)
60
Nibo logo
50
Wifi up
40
Login prompt
30
20
10
0
0
2
4
6
8
10
12
14
Trial number
€
€
12 trials
Time to ___ (Mean, SD)
y
y
y
Nibo logo - (7.5, 0.12792043)
Wifi up - (43.01818182,
0.568890467)
Login prompt - (64.55, 6.115628266)
€
€
Trial number 7 is an outlier
During trial 7, the device was not able
to acquire a network connection
6
Initial Results
Time to ___ (w/o outliers)
70
60
Time (sec)
50
Nibo logo
40
Wifi up
30
Login prompt
20
10
0
0
2
4
6
8
10
12
14
Trial number
€
€
€
11 trials kept
No 3SD outliers
Time to ___ (Mean, SD)
y
y
y
Nibo logo - (7.509090909, 0.13003496)
Wifi up - (43.01818182, 0.568890467)
Login prompt - (62.79090909, 0.54305533)
7
Initial Results
Time required for wget ___
6
5
Time (sec)
4
http://digg.com/rss/index.html
3
http://feeds.wired.com/wired/ind
ex?format=xml
2
1
0
0
2
4
6
8
10
12
14
Trial number
€
€
€
12 trials
No 3SD outliers
Time required to wget ___ (Mean, SD)
y
y
digg - (2.010833333, 0.13694447)
wired - (4.865, 0.153593324)
8
Initial Results
ping ___.res.cmu.edu of ten 1KB packets
100
90
80
Time (ms)
70
60
Min
50
Avg
40
Max
30
20
10
0
0
2
4
6
8
10
12
14
Trial number
€
€
€
12 trials
No 3SD outliers
ping ___.res.cmu.edu (Mean, SD)
y
y
y
Min - (10.00833333, 0.079296146)
Avg - (15.45, 3.337255269)
Max - (29.45833333, 20.19394411)
9
Initial Results
Signal quality during ping trials
0
-10
0
2
4
6
8
10
12
14
-20
-30
dBm
-40
Signal level
-50
Noise level
-60
-70
-80
-90
-100
Trial number
€
€
€
12 trials
No 3SD outliers
Signal quality (Mean, SD)
y
y
Signal - (-62.75, 3.934116512)
Noise - (-89.16666667, 1.114640858)
10
Initial Results
100
-50
90
-60
80
-70
70
-80
Min
60
-90
Avg
50
-100
40
-110
Signal level
30
-120
Noise level
20
-130
10
-140
0
dBm
Time (ms)
ping ___.res.cmu.edu of ten 1KB packets
Max
-150
0
2
4
6
8
10
12
14
Trial number
€
€
€
12 trials
No 3SD outliers
ping ___.res.cmu.edu (Mean, SD)
y
y
y
Min - (10.00833333, 0.079296146)
Avg - (15.45, 3.337255269)
Max - (29.45833333, 20.19394411)
€
€
€
12 trials
No 3SD outliers
Signal quality (Mean, SD)
y
y
Signal - (-62.75, 3.934116512)
Noise - (-89.16666667,
1.114640858)
11