Dinesh R
PM and CO sensor log data
Dependencies: Pulse SDFileSystem mbed
Revision 0:5564c47f0add, committed 2014-12-27
- Comitter:
- dinesh4619
- Date:
- Sat Dec 27 20:34:34 2014 +0000
- Commit message:
- test code ARM IoT contest-accs
Changed in this revision
diff -r 000000000000 -r 5564c47f0add Pulse.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Pulse.lib Sat Dec 27 20:34:34 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/NickRyder/code/Pulse/#fb79a4637a64
diff -r 000000000000 -r 5564c47f0add SDFileSystem.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Sat Dec 27 20:34:34 2014 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/mbed_official/code/SDFileSystem/#7b35d1709458
diff -r 000000000000 -r 5564c47f0add main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Dec 27 20:34:34 2014 +0000
@@ -0,0 +1,67 @@
+#include "mbed.h"
+#include "Pulse.h"
+#include "SDFileSystem.h"
+
+//SDFileSystem sd(PTD2, PTD3, PTD1, PTD0, "sd"); // the pinout on the mbed Cool Components workshop board
+SDFileSystem sd(p5, p6, p7, p26, "sd");
+
+AnalogIn sense(p15);
+PulseInOut pulse1(p8);
+DigitalOut output1(LED1);
+Serial pc(USBTX, USBRX);
+
+
+//pc.baud(9600);
+//Serial async_port(PTA2,PTA1);
+
+unsigned long duration;
+unsigned long starttime;
+unsigned long sampletime_ms = 30000;//sampe 30s ;
+unsigned long lowpulseoccupancy = 0;
+float ratio = 0;
+float concentration = 0;
+
+Timer t1; // define timer object
+void task1(void); // task function prototype
+
+int main()
+ {
+ mkdir("/sd/mydir", 0777);
+ t1.start(); // start timer counting
+ starttime=t1.read_ms();
+ while(1) {
+ duration=pulse1.read_low_us();
+ lowpulseoccupancy = lowpulseoccupancy+duration;
+if ((t1.read_ms()-starttime) > sampletime_ms) // read time in ms
+ {
+ pc.printf("Sensor value: %f \n\r", sense.read());
+ pc.printf("Before Task\n\r");
+ pc.printf("\n Duration=%lu,Low Pulse Occupancy=%lu,starttime=%lu\n\r",duration,lowpulseoccupancy,starttime);
+ task1(); // call task function
+ FILE *fp = fopen("/sd/mydir/sdtest.txt", "a+");
+ if(fp == NULL) {
+ error("Could not open file for write\n");
+ }
+ fprintf(fp, "Sensor value:%f,Low Pulse Occupancy=%lu,Time: %lu",sense.read(),lowpulseoccupancy,starttime);
+ //pc.printf("\n Sensor value:%f",sense.read());
+ fclose(fp);
+ lowpulseoccupancy = 0;
+
+ }
+ }
+}
+void task1(void)
+{
+ ratio = lowpulseoccupancy/(sampletime_ms*10.0); // Integer percentage 0=>100
+ concentration = 1.1*pow(ratio,3)-3.8*pow(ratio,2)+520*ratio+0.62; // using spec sheet curve
+ pc.printf("After Task\n\r");
+ pc.printf("\n Low pulse occupancy=%lu",lowpulseoccupancy);
+ pc.printf(",");
+ pc.printf("Ratio=%f",ratio);
+ pc.printf(",");
+ pc.printf("Concentration=%f\n\r",concentration);
+
+ starttime = t1.read_ms();
+ output1=!output1; // toggle output
+
+}
\ No newline at end of file
diff -r 000000000000 -r 5564c47f0add mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sat Dec 27 20:34:34 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5 \ No newline at end of file