Victor Szultka
Data logger program, using threads for individual components
Dependencies: C12832 mbed-os LM75B
Revision 0:5ee010a27b27, committed 2020-12-05
- Comitter:
- saltire78
- Date:
- Sat Dec 05 16:40:22 2020 +0000
- Commit message:
- .
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832.lib Sat Dec 05 16:40:22 2020 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/chris/code/C12832/#7de323fa46fe
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LM75B.lib Sat Dec 05 16:40:22 2020 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/neilt6/code/LM75B/#fc27dc535ea9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Dec 05 16:40:22 2020 +0000
@@ -0,0 +1,80 @@
+#include "mbed.h" // mbed header
+#include "LM75B.h" // temp sensor header
+#include "C12832.h" // lcd screen header
+
+C12832 lcd(p5, p7, p6, p8, p11); // define lcd
+LM75B sensor(p28,p27); // define tem sensor
+Serial pc(USBTX,USBRX); // define serial port
+LocalFileSystem local("local"); // create local file system location
+
+int seconds = 60; // define timespan variable
+int i=0; // define iteration variable
+float accum = 0.0; // define temporary accumulator float
+int timeDelay = 5; // define sample time range
+
+Thread thread1, thread2, thread3;
+
+void LM758_ok()
+{
+ while (1){
+ if (sensor.open()) { // test if temp sensor functioning (quickly eliminated if functional)
+ lcd.printf("Device detected!\n");
+ }
+ else { // if temp sensor not functioning throw an error
+ error("Device not detected!\n");
+ }
+
+ ThisThread::sleep_for(2000);
+
+ }
+}
+
+void display_data()
+{
+ while(1){
+ lcd.cls(); // clear lcd screen
+ lcd.locate(0,0); // create lcd home location
+ lcd.printf("Temp = %.3f\n\r", (float)sensor.temp()); // print sensor reading to lcd
+ pc.printf("Temp = %.3f degrees C\n\r", (float)sensor.temp()); // print sensor reading to pc
+
+ float value = (float)sensor.temp(); // store sensor reading as usable variable
+ accum = accum + value; // begin accumulating sum of values detected
+ i = i+1;
+
+ ThisThread::sleep_for(5000);
+
+ }
+}
+
+void log_data()
+{
+ // This logging component still doesn't work, same as lab4
+ while(1){
+ if (i==(seconds/timeDelay)) { // define max number of iterations allowed
+ float avgTemp = accum/i; // create an average value for the sensor readings
+ pc.printf("Average Temp for last %d seconds = %.3f degrees C\n\r", seconds, avgTemp); // print text of average temp reading to the pc
+
+ // attempt to record an average temperature over a defined period to local memory - in this case every minute.
+ lcd.printf("Data logging\n\r");
+ FILE *fp = fopen("/local/avgTemp.txt", "a"); // direct to txt file in local memory
+ fprintf(fp,"%.5f\n", avgTemp); // write average temp to local flash
+ fclose(fp); // close the file
+ ThisThread::sleep_for(6000);
+ //
+ }
+
+ }
+}
+
+
+int main() // start main program
+{
+
+ while (1) { // constant loop
+ thread1.start(LM758_ok);
+ thread2.start(display_data);
+// thread3.start(log_data);
+
+// wait(timeDelay); // wait for desired time between readings
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Sat Dec 05 16:40:22 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/bLandais/code/mbed-os/#4c0e0edd4545