Casey Lively
Night light example program utilizing Grove Seed Light Sensor
main.cpp@0:176019ee8c91, 2016-03-16 (annotated)
- Committer:
- clively6
- Date:
- Wed Mar 16 16:28:40 2016 +0000
- Revision:
- 0:176019ee8c91
test;
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| clively6 | 0:176019ee8c91 | 1 | /*Graduated Night light with Seed Grove Ambient Light sensor |
| clively6 | 0:176019ee8c91 | 2 | Casey Lively |
| clively6 | 0:176019ee8c91 | 3 | March 2016*/ |
| clively6 | 0:176019ee8c91 | 4 | |
| clively6 | 0:176019ee8c91 | 5 | //Read in ambient light sensor with mbed LPC1768 |
| clively6 | 0:176019ee8c91 | 6 | #include "mbed.h" |
| clively6 | 0:176019ee8c91 | 7 | |
| clively6 | 0:176019ee8c91 | 8 | AnalogIn sensor(p20);// |
| clively6 | 0:176019ee8c91 | 9 | BusOut lights(LED1, LED2, LED3, LED4); |
| clively6 | 0:176019ee8c91 | 10 | |
| clively6 | 0:176019ee8c91 | 11 | int main() { |
| clively6 | 0:176019ee8c91 | 12 | float val; |
| clively6 | 0:176019ee8c91 | 13 | float threshold = .03; //User specified for night-light mode. Set to .03 for light measurement mode |
| clively6 | 0:176019ee8c91 | 14 | while(1) { |
| clively6 | 0:176019ee8c91 | 15 | val = sensor.read(); |
| clively6 | 0:176019ee8c91 | 16 | |
| clively6 | 0:176019ee8c91 | 17 | //Uncomment the line below for debugging. |
| clively6 | 0:176019ee8c91 | 18 | // printf("Sensor reading: %2.2f - %2.2f\r\n", val, (float)(1023-val)*10/val); //print through debug serial connection |
| clively6 | 0:176019ee8c91 | 19 | |
| clively6 | 0:176019ee8c91 | 20 | if(val <= threshold) |
| clively6 | 0:176019ee8c91 | 21 | lights = 15; //set all bus lines to 1 |
| clively6 | 0:176019ee8c91 | 22 | else |
| clively6 | 0:176019ee8c91 | 23 | lights = 0; //set all bus lines to 0 |
| clively6 | 0:176019ee8c91 | 24 | |
| clively6 | 0:176019ee8c91 | 25 | |
| clively6 | 0:176019ee8c91 | 26 | wait(0.1); |
| clively6 | 0:176019ee8c91 | 27 | }//end while(1) |
| clively6 | 0:176019ee8c91 | 28 | }//end Main |