Russell Shomberg / Mbed 2 deprecated shomberg_hw_7

Implement a SD card into HW6

Dependencies:   SDFileSystem mbed

Fork of shomberg_hw_6 by Russell Shomberg

main.cpp@19:1f4dd59bbe6b, 2018-10-31 (annotated)

Committer:
rshomberg
Date:
Wed Oct 31 23:32:01 2018 +0000
Revision:
19:1f4dd59bbe6b
Parent:
18:699b41309be7
Child:
20:fc1690076f87
Untested code that compiles

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rshomberg 0:82635173a413 1 /**
rshomberg 19:1f4dd59bbe6b 2 Temperature Sensor and Logging for hw7
rshomberg 0:82635173a413 3 main.cpp
rshomberg 0:82635173a413 4
rshomberg 6:8cfa0216554f 5 Purpose: Read signal from TMP36 connected to pin20
rshomberg 18:699b41309be7 6 Toggle switch connected to pin07 activates SD logging
rshomberg 18:699b41309be7 7 Log: Time Elasped, Current Voltage, Current Temp, Delta Temp
rshomberg 18:699b41309be7 8 Finish log -> save file and send to USB serial port
rshomberg 18:699b41309be7 9
rshomberg 8:d6560caeda9a 10 @author Russell Shomberg
rshomberg 18:699b41309be7 11 @created 2018-10-31
rshomberg 18:699b41309be7 12 @revised 2018-10-31
rshomberg 8:d6560caeda9a 13 @version 0.0
rshomberg 18:699b41309be7 14
rshomberg 18:699b41309be7 15 Issues:
rshomberg 18:699b41309be7 16
rshomberg 18:699b41309be7 17 */
rshomberg 0:82635173a413 18
rshomberg 0:82635173a413 19 // INCLUDES
rshomberg 0:82635173a413 20 #include "mbed.h"
rshomberg 9:da0b72918880 21 #include "OCE360Input.h"
rshomberg 18:699b41309be7 22 #include "SDFileSystem.h"
rshomberg 0:82635173a413 23
rshomberg 0:82635173a413 24 // OUTPUTS
rshomberg 2:312a0a9c4485 25 Serial pc(USBTX, USBRX); // for debugging
rshomberg 6:8cfa0216554f 26
rshomberg 0:82635173a413 27 // VARIABLES
rshomberg 6:8cfa0216554f 28 int outputT= 0;
rshomberg 18:699b41309be7 29 float starting_voltage;
rshomberg 18:699b41309be7 30 float starting_temp;
rshomberg 18:699b41309be7 31
rshomberg 18:699b41309be7 32 float current_time;
rshomberg 18:699b41309be7 33 float current_voltage;
rshomberg 18:699b41309be7 34 float current_temp;
rshomberg 19:1f4dd59bbe6b 35 int file_counter=0;
rshomberg 19:1f4dd59bbe6b 36 char file_name [20];
rshomberg 19:1f4dd59bbe6b 37 Timer t;
rshomberg 19:1f4dd59bbe6b 38 FILE *fp;
rshomberg 19:1f4dd59bbe6b 39
rshomberg 19:1f4dd59bbe6b 40 // Initialize SDFileSystem
rshomberg 19:1f4dd59bbe6b 41 SDFileSystem sd(p12,p13,p14,p15,"sd");
rshomberg 18:699b41309be7 42
rshomberg 6:8cfa0216554f 43
rshomberg 0:82635173a413 44
rshomberg 18:699b41309be7 45 int main()
rshomberg 18:699b41309be7 46 {
rshomberg 19:1f4dd59bbe6b 47 //Initialize Timer
rshomberg 19:1f4dd59bbe6b 48 t.start();
rshomberg 19:1f4dd59bbe6b 49
rshomberg 19:1f4dd59bbe6b 50 // Mount the sd and
rshomberg 19:1f4dd59bbe6b 51 printf("Mounting SD Card\n\r");
rshomberg 19:1f4dd59bbe6b 52 sd.mount();
rshomberg 18:699b41309be7 53
rshomberg 0:82635173a413 54 while(1) {
rshomberg 18:699b41309be7 55 while(read_switch()) { // skip everything if switch is off
rshomberg 18:699b41309be7 56
rshomberg 18:699b41309be7 57 // Initialize a file
rshomberg 19:1f4dd59bbe6b 58 printf("Opening a new file: temp_log%d.csv\n\r",file_counter);
rshomberg 19:1f4dd59bbe6b 59 sprintf(file_name,"/sd/temp_log%d.csv",file_counter);
rshomberg 19:1f4dd59bbe6b 60 fp = fopen(file_name,"w");
rshomberg 18:699b41309be7 61
rshomberg 19:1f4dd59bbe6b 62 if (fp!=NULL) { // Don't procede if there is an issue
rshomberg 18:699b41309be7 63
rshomberg 19:1f4dd59bbe6b 64 // Write header to file
rshomberg 19:1f4dd59bbe6b 65 fprintf(fp,"Time (s), Voltage (mv), Temperature (C), Delta T (C)\n\r");
rshomberg 19:1f4dd59bbe6b 66
rshomberg 19:1f4dd59bbe6b 67 // Take initial readings
rshomberg 19:1f4dd59bbe6b 68 starting_voltage = read_sensor();
rshomberg 19:1f4dd59bbe6b 69 starting_temp = convert_mV_to_temp(starting_voltage);
rshomberg 18:699b41309be7 70
rshomberg 19:1f4dd59bbe6b 71 // start a loop that logging
rshomberg 19:1f4dd59bbe6b 72 // exiting this loop will initialize data save procedures
rshomberg 19:1f4dd59bbe6b 73 while(read_switch()) { // Main loop for logging
rshomberg 19:1f4dd59bbe6b 74 printf("Logging data....\n\r");
rshomberg 19:1f4dd59bbe6b 75 // Get data for logging
rshomberg 19:1f4dd59bbe6b 76 current_time = t.read();
rshomberg 19:1f4dd59bbe6b 77 current_voltage = read_sensor();
rshomberg 19:1f4dd59bbe6b 78 current_temp = convert_mV_to_temp(current_voltage);
rshomberg 18:699b41309be7 79
rshomberg 19:1f4dd59bbe6b 80 fprintf(fp,"%1.2f, %1.2f, %1.2f, %1.2f \n\r", current_time, current_voltage, current_temp, current_temp-starting_temp);
rshomberg 19:1f4dd59bbe6b 81
rshomberg 19:1f4dd59bbe6b 82 wait(1);
rshomberg 19:1f4dd59bbe6b 83 }
rshomberg 19:1f4dd59bbe6b 84 } else { // runs if there was a issue opening the file
rshomberg 19:1f4dd59bbe6b 85 printf("Issue with opening file\n\r");
rshomberg 18:699b41309be7 86 }
rshomberg 19:1f4dd59bbe6b 87
rshomberg 18:699b41309be7 88 // This code runs when the switch is toggled off
rshomberg 18:699b41309be7 89 // Close out file
rshomberg 19:1f4dd59bbe6b 90 printf("Logging complete! \n\r Saving file \n\r");
rshomberg 19:1f4dd59bbe6b 91 fclose(fp);
rshomberg 19:1f4dd59bbe6b 92
rshomberg 18:699b41309be7 93 // Print to USB serial
rshomberg 19:1f4dd59bbe6b 94 printf("Uploading data to USB");
rshomberg 19:1f4dd59bbe6b 95 //
rshomberg 19:1f4dd59bbe6b 96 fp = fopen(file_name,"r");
rshomberg 19:1f4dd59bbe6b 97 if (fp!=NULL) { // Don't procede if there is an issue
rshomberg 19:1f4dd59bbe6b 98 printf("I don't know how to do this");
rshomberg 19:1f4dd59bbe6b 99 } else { // runs if there was a issue opening the file
rshomberg 19:1f4dd59bbe6b 100 printf("Issue with opening file\n\r");
rshomberg 19:1f4dd59bbe6b 101 fclose(fp);
rshomberg 19:1f4dd59bbe6b 102 file_counter++;
rshomberg 19:1f4dd59bbe6b 103 }
rshomberg 6:8cfa0216554f 104 }
rshomberg 18:699b41309be7 105 // Re-enter main while loop
rshomberg 18:699b41309be7 106 //continuously check for switch to turn on again
rshomberg 0:82635173a413 107 }
rshomberg 18:699b41309be7 108 }