Diff: main.cpp

Revision:

0:399e24bbd6c2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Nov 07 05:00:41 2015 +0000
@@ -0,0 +1,110 @@
+#include "mbed.h"   // Basic Library required for onchip peripherals
+#include "LM75B.h"  // Library for LM75B I2C based Temperature sensor 
+#include "C12832.h"   // Library for SPI based LCD
+#include <cstdlib>
+//#include "USBSerial.h"
+ 
+/* Create Objects */ 
+LM75B tmp(p28,p27);         // Initialize I2C pins for Temperature Sensor
+Serial serial(USBTX,USBRX);
+//USBSerial serial; //use this for a virtual com port on D+ & D-
+AnalogIn Pot1(p19);                 // Initialize Pot1 object with Analog input
+C12832 lcd(p5, p7, p6, p8, p11);    // Initialize lcd object with SPI pins
+DigitalOut myled(LED1);
+DigitalOut myled1(LED2);
+PwmOut r (p23);  // Create PWM object r for Red LED pin p23
+PwmOut g (p24);  // Create PWM object g for Green LED pin p24
+PwmOut b (p25);  // Create PWM object b for Blue LED pin p25
+ 
+char ser_buf[50],i,data_OK;
+ 
+void Serial_parser();
+void Serial_get_data();
+ 
+/* Main Program */ 
+int main() {
+    float board_temp,cpot,fpot;
+
+    r.period(0.001);  // Periods in seconds which is 1KHz PWM freq
+    r = 1;
+    g = 1;
+    b = 1;
+    
+    lcd.cls();                 // Clear LCD Screen
+    lcd.locate(0,3);           // Start from x=0 and y=3 pixels
+    lcd.printf("mbed application board!"); // print string on LCD
+    
+    serial.attach(&Serial_get_data);
+    /**
+    * Configure Terminal at 9600 8N1 configuration
+    * In linux COM port would be /dev/ttyACM0 
+    * or to find out use "dmesg" command
+    */
+    while (1) {
+        board_temp = tmp; // read temperature
+        fpot = (float)Pot1.read_u16();
+        cpot = 3300*(fpot/65535);
+        serial.printf("pot1:%.2fmV_temperature:%.2fC;",cpot,board_temp); // Display temperature on Terminal          
+        wait(1.0);        // 1 sec delay
+    }
+}
+
+void Serial_parser()                           // Parser function for Data in the Serial buffer
+{
+    float Rcnv,Gcnv,Bcnv;
+    
+    if(data_OK) { //if everything is ok, data are available
+        switch (ser_buf[0]) {
+            case 'L':
+                if((ser_buf[1]=='O') && (ser_buf[2]=='N')) { //The command for turning led on is "LON
+                    myled = 1;
+                }
+                if((ser_buf[1]=='O') && (ser_buf[2]=='F') && (ser_buf[3]=='F')) { //the command for turning led off is "LOFF"
+                    myled = 0;
+                }
+                break;
+                
+            case 'R':
+                Rcnv = atof(&ser_buf[1]);
+                r = 1.0 - (Rcnv/100);
+                break;
+                
+            case 'G':
+                Gcnv = atof(&ser_buf[1]);
+                g = 1.0 - (Gcnv/100);                
+                break;
+                
+            case 'B':
+                Bcnv = atof(&ser_buf[1]);
+                b = 1.0 - (Bcnv/100);                
+                break;                                
+                
+            default:
+            serial.printf("Command unkonwn \r\n");
+        }
+        data_OK = 0; // we did what we have to do
+        for(int x=0; x<50; x++) ser_buf[x] = 0; //clear buffer
+    }
+}
+ 
+ 
+void Serial_get_data()                   // Aquiring serial data
+{
+    if(serial.readable()) {  //if data are available - uncomment this for mini usb MBED
+//      if(serial.available()) { //use this for virtual com port on D+ & D-
+      
+        ser_buf[i]=serial.getc();
+ 
+        if (ser_buf[i] == '\r') { //if CR is recieved, we ended the sentence
+            data_OK = 1; //we have something to parse
+            i=0; //reset the counter
+ 
+            Serial_parser(); //call the parser function
+        } else {
+            serial.putc(ser_buf[i]);
+            i++;
+            if(i>50) i=0; //we need only a few characters to turn a led on or off
+        }
+    }
+}
+