Diff: main.cpp

Revision:

2:bbc3e860fa3d

Parent:

0:bdbd3d6fc5d5

--- a/main.cpp	Tue May 16 05:18:55 2017 +0000
+++ b/main.cpp	Tue Feb 13 08:22:23 2018 +0000
@@ -1,19 +1,297 @@
 #include "mbed.h"
 #include "SDFileSystem.h"
- 
-SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
+#include "ST7565_LCD.h"
+#include "QEI.h"
+
+#define BAT_GAIN    6.80
+#define BAT_OFFS    0.0
+
+PwmOut      BEEP        (D2);      // Buzzer/speaker (PWM output)
+PwmOut      BKL         (D3);      // LCD backlight control (PMW output)
+DigitalOut  KAL         (D0);      // Keep-Alive/turn-off
+DigitalOut  BTC         (D2);      // Aux BT module control
+DigitalIn   Button      (D4);      // Pushbutton (digital input)
+AnalogIn    BATT        (A0);      // Battery monitor
+AnalogIn    ALS         (A1);      // Ambient Light sensor
  
-int main() {
-    printf("Hello World!\n");   
- 
-    mkdir("/sd/mydir", 0777);
+SDFileSystem sd(PB_15, PB_14, PB_13, PB_1, "sd"); // MOSI, MISO, SCK, CS
+
+// Quadrature encoder
+QEI Wheel(D5, D6, NC, 16);
+
+// Tickers
+Ticker Sec_Beat;            // Timer ticker
+Ticker Display_Refresh;     // Display refresh ticker
+
+//Serial ports
+Serial PC(USBTX, USBRX);    // Virtual COM via USB
+//Serial BT_module(D1, D0);    // BlueTooth module 
+
+
+extern unsigned int buffer[128*64/8];   // RAM buffer used by LCD
+time_t seconds;     // timestamp
+char Text[40]="";   // Text string used by LCD 
+float Vbatt, ALLevel;   // battery votage and ambient light level
+
+// ------------------- Prototypes ----------------------- 
+void Timer_tick(void);
+void Update_Display(void);
+void Set_Time(void);
+void Read_Voltages(void);
+void PowerOff(void);
+
+int main() 
+{
+
+    KAL = 1;      // ensure self-sustained power
+    //Button.mode(PullUp);      // enable pushbutton pull-up
+    BKL.period_ms(3);         // set LCD backlight PWM
+    BKL.write(1.0);  
+    BEEP.period_us(2300);      // set initial buzzer period and duty-cycle
+    BEEP.write(0.2);
+    Wheel.reset();        // clear encoder
+    LCD_reset();   
+
+    // splash screen with date and time
+    sprintf(Text,__DATE__);
+    LCD_drawstring(buffer, 60, 5, Text);
+    sprintf(Text,__TIME__);
+    LCD_drawstring(buffer, 78, 6, Text);  
+    LCD_write_buffer(buffer);
+
+
+    // enable LCD refresh ticker        
+    Display_Refresh.attach(&Update_Display, 0.3);
+
+    if(Button)   // if pushbutton is pressed
+        Set_Time();  // set RTC time and date  
+
+    wait(2);
+    Clear_buffer(buffer);
+    BKL.write(0.5);
     
-    FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
+    //PowerOff();   // Power-off test
+
+
+    // enable sec-beat ticker  
+    Sec_Beat.attach(&Timer_tick, 1);
+      
+
+
+    printf("Hello World!\n");    
+    mkdir("/sd/system", 0777);
+    FILE *fp = fopen("/sd/system/sdlog.txt", "w");
     if(fp == NULL) {
         error("Could not open file for write\n");
     }
     fprintf(fp, "Hello fun SD Card World!");
     fclose(fp); 
- 
     printf("Goodbye World!\n");
+    
+    while(1) 
+    {
+       // dance 
+    }    
+    
+    
 }
+
+
+//===========================================================================
+
+// ------------- Called every second ----------------------
+
+void Timer_tick() 
+{ 
+    seconds = time(NULL); 
+    strftime(Text, 50, "%d-%b-%Y  %H:%M:%S", localtime(&seconds));
+    LCD_drawstring(buffer, 0, 0, Text);
+
+    // read voltages 
+    Read_Voltages();
+    
+    // write values to buffer
+    sprintf(Text,"VBATT= %4.2f", Vbatt);
+    LCD_drawstring(buffer, 0, 2, Text);    
+    sprintf(Text,"ALL= %4.2f", ALLevel);
+    LCD_drawstring(buffer, 0, 3, Text); 
+                              
+    // Send data to COM port
+    //PC.printf("Tset= %3.0f, Tpit= %3.0f, Tmeat= %3.0f, PWM= %3.0f\n",Tset, Tpit, Tmeat, FanSpeed); 
+
+    //LCD_write_buffer(buffer);   // LCD update
+                         
+    return;
+}
+
+
+//---------------------------------------------------------------------------
+void Update_Display(void)
+{
+    LCD_write_buffer(buffer);   // LCD update 
+    return;  
+}
+
+//---------------------------------------------------------------------------
+void Set_Time(void)
+{
+    uint8_t Year=0, Month=0, Day=0, Hours=0, Mins=0, Secs=0;
+    time_t seconds;
+    struct tm t;
+
+    sprintf(Text,"TIME & DATE SETTING");
+    LCD_drawstring(buffer, 0, 0, Text); 
+    
+    // Set year
+    while(Button);
+    wait_ms(50);  
+
+    while(!Button)
+    { 
+        if(int(Wheel.getPulses())<0)
+            Wheel.reset();
+        Year = (uint8_t)(Wheel.getPulses());
+        
+        if(Year>99) 
+            Wheel.reset();
+             
+        sprintf(Text, "Year: %2d", Year);
+        LCD_drawstring(buffer, 0, 2, Text);
+   
+    }
+
+    // Set month
+    while(Button);
+    wait_ms(50);  
+    Wheel.reset();
+    while(!Button)
+    { 
+        if(int(Wheel.getPulses())<0)
+            Wheel.reset();
+        Month = (uint8_t)(Wheel.getPulses()/2);
+        
+        if(Month>11) 
+            Wheel.reset();
+            
+        sprintf(Text, "Month: %2d", Month+1);
+        LCD_drawstring(buffer, 0, 3, Text);
+   
+    }
+
+
+    // Set day
+    while(Button);
+    wait_ms(50);  
+    Wheel.reset();
+    while(!Button)
+    { 
+        if(int(Wheel.getPulses())<0)
+            Wheel.reset();
+        Day = (uint8_t)(Wheel.getPulses()/2);
+        
+        if(Day>30) 
+            Wheel.reset();
+            
+        sprintf(Text, "Day: %2d", Day+1);
+        LCD_drawstring(buffer, 0, 4, Text);
+   
+    }
+
+    // Set hours
+    while(Button);
+    wait_ms(50);  
+    Wheel.reset();
+    while(!Button)
+    { 
+        if(int(Wheel.getPulses())<0)
+            Wheel.reset();
+        Hours = (uint8_t)(Wheel.getPulses()/2);
+        
+        if(Hours>22) 
+            Wheel.reset();
+            
+        sprintf(Text, "Hours: %2d", Hours+1);
+        LCD_drawstring(buffer, 0, 5, Text);
+   
+    }
+    Hours++;
+
+    // Set minutes
+    while(Button);
+    wait_ms(50);  
+    Wheel.reset();
+    while(!Button)
+    { 
+        if(int(Wheel.getPulses())<0)
+            Wheel.reset();
+        Mins = (uint8_t)(Wheel.getPulses()/2);
+        
+        if(Mins>59) 
+            Wheel.reset();
+            
+        sprintf(Text, "Minutes: %2d", Mins);
+        LCD_drawstring(buffer, 0, 6, Text);
+   
+    }
+
+    t.tm_year = Year + 100;
+    t.tm_mon  = Month;
+    t.tm_mday = Day + 1;
+    t.tm_hour = Hours;
+    t.tm_min  = Mins;
+    t.tm_sec  = Secs;
+
+    seconds = mktime(&t);
+    set_time(seconds);
+    
+    return;
+}    
+
+
+//---------------------------------------------------------------------------
+void Read_Voltages(void)
+{
+
+    double ADC_value;
+    uint8_t smooth = 10; // Number of samples to smooth
+    uint8_t i;
+    
+    // Read battery voltage
+    
+    ADC_value = BATT.read();    // cleanup
+    wait_ms(50);
+    ADC_value = 0;    
+    for(i=0;i<smooth;i++) 
+        ADC_value += BATT.read();       
+
+    ADC_value = ADC_value/smooth;
+    Vbatt = (float)(ADC_value*BAT_GAIN)+BAT_OFFS;
+    
+    
+    // Read Ambient Light Level
+    
+    ADC_value = ALS.read();    // cleanup
+    wait_ms(50);
+    ADC_value = 0;    
+    for(i=0;i<smooth;i++) 
+        ADC_value += ALS.read();       
+
+    ADC_value = ADC_value/smooth;
+    ALLevel = (float)(ADC_value);      
+   
+return;
+}
+
+
+//--------------------------------------------------------------------------- 
+void PowerOff(void) 
+{
+    BKL.write(1);
+    Clear_buffer(buffer);
+    sprintf(Text,"POWERING OFF");
+    LCD_drawstring(buffer, 20, 3, Text); 
+    LCD_write_buffer(buffer);
+    wait(2);
+    
+    KAL = 0;
+}
\ No newline at end of file