Sergeh Vartanian
WSN Coordinator
Fork of
I2C_HelloWorld_Mbed
by 
mbed official
Diff: main.cpp
- Revision:
- 1:f9ead8ebc68b
- Parent:
- 0:f76c26307f9a
--- a/main.cpp Thu Feb 14 17:24:48 2013 +0000
+++ b/main.cpp Mon Jun 16 18:17:19 2014 +0000
@@ -1,25 +1,253 @@
#include "mbed.h"
+#include "PowerControl.h"
+#include "EthernetPowerControl.h"
// Read temperature from LM75BD
+#define USR_POWERDOWN (0x104)
I2C i2c(p28, p27);
+Serial pc(USBTX, USBRX); // tx, rx
+InterruptIn PIR_in(p5);
+Serial xbee1(p9,p10);
+DigitalOut rst1(p11);
+AnalogIn light(p20);
-const int addr = 0x90;
+Timer cal_temp_time;
+Timer cal_temp_time_c;
+
+Timer PIR_c;
+//Ticker flipper;
+
+const int tx_addr = 0x14;
+const int rx_addr = 0x15;
+char readbuff [35];
+char rb [35];
+char tx_cmd[1];
+int y[18];
+ int x[16];
+ int occupancy_count = 0;
+ char c = 'y';
+ int flag = 0;
+ int room_temp = 0;
+ int cal_temp[16];
+ int flag_c = 0;
+ int room_temp_c = 0;
+ int cal_temp_c[16];
+ int temp_occupancy_count_c = 0;
+ int PIR_tag = 0;
+ int initial_flag = 0;
+ int after_cond_high = 0;
+ int after_cond_low = 0;
+ int temp_occupancy_count_ed = 0;
+ int low_duration = 0;
+ int high_duration = 0;
+ int fluc_counter = 0;
+ int human_temp_c = 0;
+ int human_temp = 0;
+
+void flip() {
+ // pc.printf("kos kesh");
+ if (PIR_tag == 1)
+ {
+ if (PIR_c.read() >= 30) //check to see if the PIR sensor has been low for 30 seconds or more, if so, then most likely someone new just entered
+ temp_occupancy_count_c = 1;
+ else if (PIR_c.read() <= 10)
+ temp_occupancy_count_c = temp_occupancy_count_ed;
+ PIR_c.reset();
+ PIR_tag = 0;
+ }
+
+
+ tx_cmd[0] = 0x4C;
+ //tx_cmd[1] = 0x4C;
+ //i2c.write(tx_addr,
+ i2c.write(tx_addr, tx_cmd , 1);
+
+ wait(0.25);
+
+ //i2c.write(rx_addr, cmd, 1);
+ i2c.read(rx_addr, readbuff, 35);
+
+ //float tmp = (float((cmd[0]<<8)|cmd[1]) / 256.0);
+ for (int count = 0; count < 17; count++)
+ y[count] = 256*readbuff[(count*2)+1] + readbuff [(count*2)];
+
+ y[17] = readbuff[34];
+
+
+ //calibrating
+
+ for (int temp_comp_c = 0; temp_comp_c < 16; temp_comp_c++)
+ {
+ if (( x[temp_comp_c] >= 240) && (x[temp_comp_c] <= 300))
+ room_temp_c = room_temp_c + 1;
+ if (( x[temp_comp_c] >= 300) && (x[temp_comp_c] <= 400))
+ human_temp_c = human_temp_c + 1;}
+ if (flag_c == 0) {
+ if (room_temp_c >= 12){
+ for (int cal_c = 0; cal_c < 16; cal_c++)
+ cal_temp_c[cal_c] = x[cal_c];
+ }
+ flag_c = 1;
+ cal_temp_time_c.start();
+ }
+
+ if (cal_temp_time_c.read_ms() == 900000){
+ flag_c = 0;
+ cal_temp_time_c.reset();}
+
+
+ if (after_cond_high == 1){
+ if ((PIR_c.read() <= 10) && (room_temp_c + room_temp <= 28) && (fluc_counter == 5)) //check to see if the PIR sensor has been high for 10 or less seconds if so, someone just passed by and probably left
+ { temp_occupancy_count_c = temp_occupancy_count_c;}
+ high_duration = PIR_c.read(); //how long did the PIR signal stay high (busy)
+ PIR_c.reset(); //reset timer
+ if ((high_duration > low_duration) && (room_temp_c + room_temp <= 10) && (fluc_counter == 5))
+ temp_occupancy_count_c++;
+ after_cond_low = 1;
+ after_cond_high = 0;
+ }
+
+ if (after_cond_low == 1){
+ if ((PIR_c.read() >= 120) && (room_temp_c + room_temp >= 24) && (fluc_counter == 5))
+ temp_occupancy_count_c--;
+ else if ((PIR_c.read() >= 600) && (room_temp_c+room_temp >= 24) && (fluc_counter == 5))
+ temp_occupancy_count_c = 1;
+ low_duration = PIR_c.read(); //how long did the PIR signal stay low
+ PIR_c.reset(); //reset timer
+ if (low_duration > high_duration) //comparing low and high duration
+ temp_occupancy_count_c--;
+ after_cond_low = 0;
+ after_cond_high = 1;
+ }
+
+ if (initial_flag == 0){
+ if (PIR_in == 1){ //first raising edge of Coord PIR Sensor (someone has entered the room)
+ PIR_c.start(); // start timer for PIR sensor processing
+ // temp_occupancy_count_c = temp_occupancy_count_c + 1
+ initial_flag = 1 ;
+ after_cond_high = 1;} //initial condition met, neg to pos edge
+ // initial_flag = 1;
+ else {
+ PIR_c.start();
+ PIR_tag = 1;
+ }
+ }
+
+ room_temp_c = 0;
+ room_temp = 0;
+ human_temp_c = 0;
+ human_temp = 0;
+ pc.printf("Coordinator:\n\r%d\t%d\t%d\t%d\n\r%d\t%d\t%d\t%d\n\r%d\t%d\t%d\t%d\n\r%d\t%d\t%d\t%d\n\r\n\r",y[1],y[2],y[3],
+ y[4],y[5],y[6],y[7],y[8],y[9],y[10],y[11],y[12],y[13],y[14],y[15],y[16]);
+ pc.printf("Occupany Count: %d\n\r", temp_occupancy_count_c);
+ if (temp_occupancy_count_c <= 3)
+ pc.printf("Low Occupancy\n\r");
+ if ((temp_occupancy_count_c <= 6) && (temp_occupancy_count_c > 3))
+ pc.printf("Mid Occupancy\n\r");
+ if (temp_occupancy_count_c > 6)
+ pc.printf("High Occupancy\n\r");
+}
int main() {
- char cmd[2];
+
+
+ i2c.frequency(50000);
+ xbee1.baud(115200);
+
+ PHY_PowerDown();
+
+ PIR_in.rise(&flip);
+ PIR_in.fall(&flip);
+
+ rst1 = 0; //Set reset pin to 0
+ wait_ms(1);//Wait at least one millisecond
+ rst1 = 1;//Set reset pin to 1
+ wait_ms(1);
+
+ // pc.printf("not this");
+ wait_ms(75000); //wait one minute for initial start up
+
while (1) {
- cmd[0] = 0x01;
- cmd[1] = 0x00;
- i2c.write(addr, cmd, 2);
+
+
+ // xbee1.putc(c);
+ if (xbee1.readable()){
+ // pc.printf("receiving\n\r");
+ // pc.putc(xbee1.getc());
+
+ if (fluc_counter < 6)
+ fluc_counter++;
+
+ for (int j = 2; j < 34; j++)
+ rb[j] = xbee1.getc();
+
+ for (int z = 0; z < 16; z++)
+ x[z] = 256*rb[(2*z)+3]+rb[(2*z)+2];
+
+ //calibrating
+
+ for (int temp_comp = 0; temp_comp < 16; temp_comp++)
+ {
+ if (( x[temp_comp] >= 240) && (x[temp_comp] <= 300))
+ room_temp = room_temp + 1;
+ if (( x[temp_comp] >= 300) && (x[temp_comp] <= 400))
+ human_temp = human_temp + 1;}
+ if (flag == 0) {
+ if (room_temp >= 12){ //good place to set the initial flag to begin duration timing
+ for (int cal = 0; cal < 16; cal++)
+ cal_temp[cal] = x[cal];
+ }
+ flag = 1;
+ cal_temp_time.start();
+ }
+
+ if (cal_temp_time.read_ms() == 900000){
+ flag = 0;
+ cal_temp_time.reset();}
+
+ // pc.printf("x = %d\n\r", x);
+
+ pc.printf("End Device\n\r%d\t%d\t%d\t%d\n\r%d\t%d\t%d\t%d\n\r%d\t%d\t%d\t%d\n\r%d\t%d\t%d\t%d\n\r\n\r",x[0],x[1],x[2],x[3],
+ x[4],x[5],x[6],x[7],x[8],x[9],x[10],x[11],x[12],x[13],x[14],x[15]);
+ pc.printf("Occupany Count: %d\n\r", temp_occupancy_count_c);}
+
+ if ((PIR_c.read() >= 600) && (PIR_in == 0)) { //if the signal has been low for 5 or more minutes, and the PIR_in is low, check the temp, if room, occupancy zero
+ tx_cmd[0] = 0x4C;
+ i2c.write(tx_addr, tx_cmd , 1);
+
+ wait(0.25);
- wait(0.5);
+ i2c.read(rx_addr, readbuff, 35);
- cmd[0] = 0x00;
- i2c.write(addr, cmd, 1);
- i2c.read(addr, cmd, 2);
-
- float tmp = (float((cmd[0]<<8)|cmd[1]) / 256.0);
- printf("Temp = %.2f\n", tmp);
+ for (int count = 0; count < 17; count++)
+ y[count] = 256*readbuff[(count*2)+1] + readbuff [(count*2)];
+
+ y[17] = readbuff[34];
+
+ for (int temp_comp_c = 0; temp_comp_c < 16; temp_comp_c++)
+ {
+ if (( x[temp_comp_c] >= 240) && (x[temp_comp_c] <= 300))
+ room_temp_c = room_temp_c + 1;
+ if (( x[temp_comp_c] >= 300) && (x[temp_comp_c] <= 400))
+ human_temp_c = human_temp_c + 1;}
+
+ }
+
+ if (room_temp_c >= 12)
+ temp_occupancy_count_c = 0;
+ if (human_temp_c >= 6)
+ temp_occupancy_count_c = 1;
+ if (human_temp_c >= 8)
+ temp_occupancy_count_c = 2;
+
+
+ if (light < 0.5){ //and thermal temp readings are low, need to think about this a little more
+ occupancy_count = 0;
+ }
+
+ // sleep();
+ // pc.printf("system on idle\n\r");
+ //pc.printf("x1 = %d\n",x1);
}
}
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