Benjamin Amundson / Mbed 2 deprecated Amundson_hw_7

Amundson OCE 360 homework 7, write and store temperature and time data to an SD card

Dependencies:   SDFileSystem mbed

main.cpp@0:4145a0dc56d8, 2018-11-03 (annotated)

Committer:
bamundson
Date:
Sat Nov 03 19:12:06 2018 +0000
Revision:
0:4145a0dc56d8
Amundson OCE 360 Homework 7, log temperature and time data to be written and stored to an SD card.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bamundson 0:4145a0dc56d8 1 // Benjamin Amundson OCE Homework 6 10/23/2018
bamundson 0:4145a0dc56d8 2 //
bamundson 0:4145a0dc56d8 3 //last revision 11/1/2018
bamundson 0:4145a0dc56d8 4
bamundson 0:4145a0dc56d8 5 #include "mbed.h"
bamundson 0:4145a0dc56d8 6 #include "SDFileSystem.h"
bamundson 0:4145a0dc56d8 7 #include "temperatureValues.h"
bamundson 0:4145a0dc56d8 8 #include "inputOutput.h"
bamundson 0:4145a0dc56d8 9
bamundson 0:4145a0dc56d8 10 int main (){
bamundson 0:4145a0dc56d8 11 FILE *file;
bamundson 0:4145a0dc56d8 12 float outputVoltage;
bamundson 0:4145a0dc56d8 13 float temperature;
bamundson 0:4145a0dc56d8 14 float initialTemperature = ((SOURCE_VOLTAGE_MV-(SOURCE_VOLTAGE_MV-Ain)));
bamundson 0:4145a0dc56d8 15 float temperatureChange;
bamundson 0:4145a0dc56d8 16 int c;
bamundson 0:4145a0dc56d8 17
bamundson 0:4145a0dc56d8 18
bamundson 0:4145a0dc56d8 19 timer.start();
bamundson 0:4145a0dc56d8 20 file = fopen("/sd/temp_data.txt", "w");
bamundson 0:4145a0dc56d8 21
bamundson 0:4145a0dc56d8 22 while (1) {
bamundson 0:4145a0dc56d8 23
bamundson 0:4145a0dc56d8 24 if(switchValue == 1) {
bamundson 0:4145a0dc56d8 25 file = fopen("/sd/temp_data.txt", "a+");
bamundson 0:4145a0dc56d8 26 if ( file == NULL ) {
bamundson 0:4145a0dc56d8 27 error("ERROR: Could not open file for writing!\n\r");
bamundson 0:4145a0dc56d8 28 return -1;
bamundson 0:4145a0dc56d8 29 }
bamundson 0:4145a0dc56d8 30 pc.printf("\nCollecting data (Do not remove SD Card!) ...\n\r");
bamundson 0:4145a0dc56d8 31
bamundson 0:4145a0dc56d8 32 outputVoltage = (SOURCE_VOLTAGE_MV*Ain);
bamundson 0:4145a0dc56d8 33 temperature = ((SOURCE_VOLTAGE_MV-(SOURCE_VOLTAGE_MV*Ain)) * MV_TO_VOLTAGE_CONV);
bamundson 0:4145a0dc56d8 34 temperatureChange = initialTemperature - temperature;
bamundson 0:4145a0dc56d8 35 fprintf(file, "%2.2fs: %3.2f mV %3.2f deg %3.2f degree change from initial C\n\r", timer.read(), outputVoltage, temperature, temperatureChange);
bamundson 0:4145a0dc56d8 36
bamundson 0:4145a0dc56d8 37 pc.printf("Output Voltage (mV): %3.2f \r\n", outputVoltage);
bamundson 0:4145a0dc56d8 38 pc.printf("Current Temperature degrees C: %3.1f \r\n", temperature);
bamundson 0:4145a0dc56d8 39 pc.printf("Current Time since powered on: %2.2f \r\n", timer.read());
bamundson 0:4145a0dc56d8 40 fclose(file);
bamundson 0:4145a0dc56d8 41 wait(2.0);
bamundson 0:4145a0dc56d8 42
bamundson 0:4145a0dc56d8 43
bamundson 0:4145a0dc56d8 44 }
bamundson 0:4145a0dc56d8 45
bamundson 0:4145a0dc56d8 46 else {
bamundson 0:4145a0dc56d8 47 if ( file == NULL ) {
bamundson 0:4145a0dc56d8 48 error("ERROR: Could not open file for writing!\n\r");
bamundson 0:4145a0dc56d8 49 return -1;
bamundson 0:4145a0dc56d8 50 }
bamundson 0:4145a0dc56d8 51
bamundson 0:4145a0dc56d8 52 fclose(file);
bamundson 0:4145a0dc56d8 53 file = fopen("/sd/temp_data.txt", "r");
bamundson 0:4145a0dc56d8 54 pc.printf("Temperature data:\n\r");
bamundson 0:4145a0dc56d8 55 while(1) {
bamundson 0:4145a0dc56d8 56 c = fgetc(file);
bamundson 0:4145a0dc56d8 57 if ( c == EOF ) {
bamundson 0:4145a0dc56d8 58 break;
bamundson 0:4145a0dc56d8 59 }
bamundson 0:4145a0dc56d8 60 pc.putc(c);
bamundson 0:4145a0dc56d8 61
bamundson 0:4145a0dc56d8 62 }
bamundson 0:4145a0dc56d8 63
bamundson 0:4145a0dc56d8 64 // Close the file and finish
bamundson 0:4145a0dc56d8 65 fclose(file);
bamundson 0:4145a0dc56d8 66 pc.printf("Done! Safe to remove SD card\n\r");
bamundson 0:4145a0dc56d8 67 wait(2);
bamundson 0:4145a0dc56d8 68
bamundson 0:4145a0dc56d8 69
bamundson 0:4145a0dc56d8 70 }
bamundson 0:4145a0dc56d8 71
bamundson 0:4145a0dc56d8 72
bamundson 0:4145a0dc56d8 73
bamundson 0:4145a0dc56d8 74
bamundson 0:4145a0dc56d8 75 }
bamundson 0:4145a0dc56d8 76 }