Basic IoT demo of sensor data going to one phone and data push is controlled by another phone.
Dependencies: HTU21D SCP1000 TMP36 mbed
Diff: main.cpp
- Revision:
- 0:8ed55ae36c54
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue Mar 08 14:17:14 2016 +0000 @@ -0,0 +1,170 @@ +//Joel Shearon and Van Mang ECE 4180 Mini Project +#include "mbed.h" +#include "HTU21D.h" +#include "TMP36.h" +#include "string" +#include "SCP1000.h" +SCP1000 scp1000(p5,p6,p7,p8); +TMP36 tmp36(p20); +Ticker flipper; +AnalogIn photocell(p15); +string sun; +PwmOut myled(LED1); +RawSerial dev(p28,p27); +RawSerial ble(p13,p14); +DigitalOut led1(LED3); +DigitalOut led4(LED4); +Serial pc(USBTX, USBRX); +HTU21D temphumid(p9, p10); // Temp Module || sda, SCL +string options[7] = {"moonless cloudy night \n\r" +,"moonlit night \n\r" +,"dark room\n\r" +,"dark overcast day \n\r" +,"overcast day \n\r" +,"full day \n\r" +,"full sun \n\r"}; + +void dev_recv() +{ + led1 = !led1; + while(dev.readable()) { + pc.putc(dev.getc()); + } +} + +void pc_recv() +{ + led4 = !led4; + while(pc.readable()) { + dev.putc(pc.getc()); + } +} + +void flip() { + float readPhoto = photocell.read()*3.3; + if (readPhoto < 0.15f) + { sun = options[0]; + } + else if (readPhoto < 0.412f) + { sun = options[1]; + } + else if (readPhoto < 1.65f) + { sun = options[2]; + } + else if (readPhoto < 1.34f){ + sun = options[3]; + } + else if (readPhoto < 3.2f) + { sun = options[4]; + } + else if (readPhoto < 3.26f) + { sun = options[5]; + } + else if (readPhoto >= 3.26f) + { sun = options[6]; + } +} +//start of main + +int main() +{ + char bnum=0; + char bhit=0; + pc.baud(9600); + dev.baud(9600); + float tempC, tempF; + pc.attach(&pc_recv, Serial::RxIrq); + dev.attach(&dev_recv, Serial::RxIrq); + flipper.attach(&flip, 1); + while(1) { + wait(1); + //conversion to degrees C - from sensor output voltage per LM61 data sheet + tempC = tmp36.read(); + //printf("percentage: %3.3f%%\n", tmp36.read()); + //wait(0.5); + //convert to degrees F + tempF = tmp36.readFah(); + + if (ble.getc()=='!') { + if (ble.getc()=='B') { //button data packet + bnum = ble.getc(); //button number + bhit = ble.getc(); //1=hit, 0=release + if (ble.getc()==char(~('!' + 'B' + bnum + bhit))) { //checksum OK? + myled = bnum - '0'; //current button number will appear on LEDs + switch (bnum) { + case '1': //number button 1 + if (bhit=='1') { + //add hit code here + } else { + //dev.printf("1"); + tempC = tmp36.read(); + tempF = tmp36.readFah(); + dev.printf("%5.2F C %5.2F F \n\r", tempC, tempF); + } + break; + case '2': //number button 2 + if (bhit=='1') { + //add hit code here + } else { + //dev.printf("2"); + dev.printf("Humidity Is: %i %%\n\r", temphumid.sample_humid()); + } + break; + case '3': //number button 3 + if (bhit=='1') { + //add hit code here + } else { + //dev.printf("3"); + dev.printf("the sun level is: %s", sun); + } + break; + case '4': //number button 4 + if (bhit=='1') { + //add hit code here + } else { + //dev.printf("4"); + dev.printf("The pressure is %d Pa", scp1000.readPressure()); + } + break; + case '5': //button 5 up arrow + if (bhit=='1') { + //add hit code here + } else { + //dev.printf("5"); + tempC = tmp36.read(); + tempF = tmp36.readFah(); + dev.printf("%5.2F C %5.2F F \n\r", tempC, tempF); + } + break; + case '6': //button 6 down arrow + if (bhit=='1') { + //add hit code here + } else { + //dev.printf("6"); + dev.printf("Humidity Is: %i %%\n\r", temphumid.sample_humid()); + } + break; + case '7': //button 7 left arrow + if (bhit=='1') { + //add hit code here + } else { + //dev.printf("7"); + dev.printf("the sun level is: %s", sun); + } + break; + case '8': //button 8 right arrow + if (bhit=='1') { + //add hit code here + } else { + //dev.printf("8"); + dev.printf("The pressure is %d Pa", scp1000.readPressure()); + } + break; + default: + break; + } + } + } + } + } +} \ No newline at end of file