(DA) Internet of Things and Smart Electronics- ELE3006M2122
Final tidy of code following installation of new sensor, more comments added prior to submission
Dependencies: mbed
Diff: main.cpp
- Revision:
- 14:3e9991fe64e5
- Parent:
- 13:5ad65a688f3f
- Child:
- 15:0cd78b44ea83
diff -r 5ad65a688f3f -r 3e9991fe64e5 main.cpp
--- a/main.cpp Fri Jan 21 14:26:56 2022 +0000
+++ b/main.cpp Fri Jan 21 22:33:32 2022 +0000
@@ -8,8 +8,8 @@
* @ Date - January 2022
*
* Acknowledgements
-* Craig A. Evans, University of Leeds, TMP102 Library ,Feb 2016
-* Dr Edmond Nurellari, University of Lincoln, Joystick & N5110 Libraries
+* Craig A. Evans, University of Leeds, TMP102 Library, Feb 2016
+* Dr Edmond Nurellari, University of Lincoln, Joystick, N5110 Libraries & SD Card Libraries
* Paul Staron, Piezo Buzzer utility, April 2019
*/
@@ -18,6 +18,7 @@
#include "N5110.h"
#include "Joystick.h"
#include "Bitmap.h"
+#include "SDFileSystem.h"
TMP102 tmp102(I2C_SDA,I2C_SCL); // Create TMP102 object
@@ -27,6 +28,8 @@
// y x button
Joystick joystick(PTB10,PTB11,PTC16); // Define Joystick Object
+SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); // MOSI, MISO, SCK, CS - Connections to SD card holder on K64F (SPI interface)
+
Serial pc(USBTX,USBRX); // UART connection for PC
struct State { // Struct for state
@@ -91,6 +94,8 @@
void OnStartup(); //
void Run(); //
void StartTemp(); //
+void delete_file(char filename[]); //
+void WriteToFile(); // Function to attempt to write temperature to file
int main()
{
@@ -185,7 +190,7 @@
lcd.printString(" Smart Cold",0,1); // Just a welcome message before auto moving to main menu
lcd.printString(" Storage",0,2); //
lcd.printString(" Monitoring",0,3); //
- lcd.printString("V13 - Jan 2022",0,4); //
+ lcd.printString("V15 - Jan 2022",0,4); //
lcd.printString("--------------",0,5); //
lcd.refresh(); // Need to refresh display after setting pixels or writing strings
wait(5.0); // Leave welcome screen on for designated amount of time
@@ -209,6 +214,7 @@
MENUSTATE_Main, // Defining each menu state to be called upon later
MENUSTATE_Monitor, // Defining each menu state to be called upon later
MENUSTATE_OneOff, // Defining each menu state to be called upon later
+ MENUSTATE_Results, // Defining each menu state to be called upon later
MENUSTATE_About, // Defining each menu state to be called upon later
MENUSTATE_Author, // Defining each menu state to be called upon later
@@ -273,7 +279,7 @@
break; //
case MENUSTATE_Main: //
{
- NumMenuItems = 4; // Dont for get to set this when changing number of items in the menu. We need this to wrap the selection around properly etc.
+ NumMenuItems = 5; // Dont for get to set this when changing number of items in the menu. We need this to wrap the selection around properly etc.
if(SelectedItem >= NumMenuItems) //
{
SelectedItem = 0; // Something has gone wrong, reset selected item.
@@ -281,8 +287,9 @@
lcd.printString("---- MENU ----",0,0); // Menu title and selectable options
lcd.printString("M1 - Monitor",0,1); // Printed to the LCD screen
lcd.printString("M2 - One-off",0,2); //
- lcd.printString("About",0,3); //
- lcd.printString("Author",0,4); //
+ lcd.printString("Results",0,3); //
+ lcd.printString("About",0,4); //
+ lcd.printString("Author",0,5); //
if(bAButtonWasPressed) // If A was pressed then we transition to the selected screen.
{
@@ -296,9 +303,13 @@
}
else if(SelectedItem == 2) // If 2 line is selected, move to detailed menu
{ // Actually 2 line + 1, see circle draw and selection below
+ NewMenuState = MENUSTATE_Results; //
+ }
+ else if(SelectedItem == 3) // If 2 line is selected, move to detailed menu
+ { // Actually 2 line + 1, see circle draw and selection below
NewMenuState = MENUSTATE_About; //
}
- else if(SelectedItem == 3) // If 3 line is selected, move to detailed menu
+ else if(SelectedItem == 4) // If 3 line is selected, move to detailed menu
{ // Actually 3 line + 1, see circle draw and selection below
NewMenuState = MENUSTATE_Author; //
}
@@ -343,9 +354,9 @@
}
if (T <= g_StartTemp - 2) { // High temp alarm condition - in real world would be lot lower!!
- LED04 = !LED04; // Flash LED01 if temperature is over specified - Simulated starting of cold blowers
- LED05 = !LED05; // Flash LED02 if temperature is over specified - Simulated starting of cold blowers
- LED06 = !LED06; // Flash LED03 if temperature is over specified - Simulated starting of cold blowers
+ LED04 = !LED04; // Flash LED01 if temperature is over specified - Simulated starting of heaters
+ LED05 = !LED05; // Flash LED02 if temperature is over specified - Simulated starting of heaters
+ LED06 = !LED06; // Flash LED03 if temperature is over specified - Simulated starting of heaters
printf("WARNING - Low Temp!! \n"); //
Buzzer.period(1.0/554.0); // Warning Buzzer to extremely high
Buzzer = 0.5; //
@@ -353,10 +364,10 @@
Buzzer = 0; //
}
else {
- LED04 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers
- LED05 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers
- LED06 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers
- Buzzer = 0; // Buzzer off if temperature is below specified - Simulated stopping of cold blowers
+ LED04 = 1; // LED01 off if temperature is below specified - Simulated stopping of heaters
+ LED05 = 1; // LED01 off if temperature is below specified - Simulated stopping of heaters
+ LED06 = 1; // LED01 off if temperature is below specified - Simulated stopping of heaters
+ Buzzer = 0; // Buzzer off if temperature is below specified - Simulated stopping of heaters
}
if(bAButtonWasPressed) // Check if button was pressed
{
@@ -381,14 +392,14 @@
NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu.
}
- float T = tmp102.get_temperature(); // read temperature and print to lcd
+ T = tmp102.get_temperature(); // read temperature and print to lcd
pc.printf("T = %f K\n",T); // Print to serial - allows testing without device attached
int length = sprintf(buffer," T = %.2f C",T); // print formatted data to buffer - it is important the format specifier ensures the length will fit in the buffer
- if (length <= 14){ // if string will fit on display (assuming printing at x=0)
- lcd.printString("-- One-Off --",0,0); //
- lcd.printString("-- Measure --",0,1); //
- lcd.printString(buffer,0,3); // display on screen
- lcd.printString(" 'A' to Menu",0,5); //
+ if (length <= 14){ // if string will fit on display (assuming printing at x=0)
+ lcd.printString("-- One-Off --",0,0); //
+ lcd.printString("-- Measure --",0,1); //
+ lcd.printString(buffer,0,3); // display on screen
+ lcd.printString(" 'A' to Menu",0,5); //
}
if(bAButtonWasPressed) // Check if button was pressed
@@ -400,7 +411,34 @@
}
}
- break;
+ break;
+ case MENUSTATE_Results: // Call Author menu following top menu selection
+ {
+
+ NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc.
+ if(SelectedItem >= NumMenuItems) //
+ {
+ NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu.
+ }
+
+ WriteToFile(); //
+
+ lcd.printString("--- Results ---",0,0); //
+ lcd.printString(" ",0,1); //
+ lcd.printString(" ",0,2); //
+ lcd.printString(" ",0,3); //
+ lcd.printString(" ",0,4); //
+ lcd.printString(" 'A' to Menu",0,5); //
+
+ if(bAButtonWasPressed) // Check if button was pressed
+ {
+ if(SelectedItem == 0) //
+ {
+ NewMenuState = MENUSTATE_Main; // Take us back to top menu
+ }
+ }
+ }
+ break;
case MENUSTATE_About: // Call About menu following top menu selection
{
NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc.
@@ -516,4 +554,27 @@
g_state = fsm[g_state].nextState[d]; // read input and update curent state
}
-
+void WriteToFile() // Function to attempt to write temperature to file
+{
+ printf("#### SD Card Example #####\n");
+ FILE *fp; // this is our file pointer
+
+ float T = tmp102.get_temperature(); // read temperature and print to lcd
+ pc.printf("T = %f K\n",T); // Print to serial - allows testing without device attached
+
+ fp = fopen("OvernightTemps", "w");
+ int ONight_Temp = T; //
+
+ if (fp == NULL) { // if it can't open the file then print error message
+ printf("Error! Unable to open file!\n");
+ }
+ else { // opened file so can write
+ printf("Writing to file....");
+ for(int i = T; i <= 50; i++) {
+ float T = 1000.0F/i; // dummy variable
+ fprintf(fp, "%d,%f\n",i,T); // print formatted string to file (CSV)
+ }
+ printf("Done.\n");
+ fclose(fp); // ensure you close the file after writing
+ }
+}