Revision 12:2c3550f16e6d, committed 2022-03-26

Comitter:

sekefors

Date:

Sat Mar 26 22:30:25 2022 +0000

Parent:

11:756321f0b0cd

Commit message:

ultrasonic works with sw2 and rgb;

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RGBLED.cpp	Sat Mar 26 22:30:25 2022 +0000
@@ -0,0 +1,18 @@
+#include "RGBLED.h"
+
+RGBLed::RGBLed (PinName redpin, PinName greenpin, PinName bluepin)
+    : _redpin(redpin), _greenpin(greenpin), _bluepin(bluepin)
+{
+    //50Hz PWM clock default a bit too low, go to 2000Hz (less flicker)
+    _redpin.period(0.0005);
+}
+ 
+void RGBLed::write(float red,float green, float blue)
+{
+    _redpin = red;
+    _greenpin = green;
+    _bluepin = blue;
+}
+//class could be moved to include file
+ 
+ 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RGBLED.h	Sat Mar 26 22:30:25 2022 +0000
@@ -0,0 +1,21 @@
+#ifndef MBED_RGBLED_H
+#define MBED_RGBLED_H
+
+#include "mbed.h"
+
+//Class to control an RGB LED using three PWM pins
+
+class RGBLed
+{
+public:
+    RGBLed(PinName redpin, PinName greenpin, PinName bluepin);
+    void write(float red,float green, float blue);
+private:
+    PwmOut _redpin;
+    PwmOut _greenpin;
+    PwmOut _bluepin;
+};
+ 
+
+
+#endif
\ No newline at end of file

--- a/main.cpp	Sat Aug 28 22:17:23 2021 +0000
+++ b/main.cpp	Sat Mar 26 22:30:25 2022 +0000
@@ -5,17 +5,19 @@
 
 #include "mbed.h"
 #include "hcsr04.h"
-#include "ESP8266.h"
 #include "math.h"
-#define CloudIP "184.106.153.149"           //Raw IP Address of ThingSpeak Cloud Server
+#include "RGBLED.h"
 
+//Setup RGB led using PWM pins and class
+RGBLed myRGBled(D6,D5,D3); //RGB PWM pins
+
+DigitalIn sw2(SW2);
 DigitalOut RLed(LED1);                      //Onboard Red LED = Shelf Out of Stock
 DigitalOut GLed(LED2);                      //Onboard Green LED = All OK
 DigitalOut BLed(LED3);                      //Onboard Blue LED for Wifi Tx Indication
 HCSR04 usensor1(D8,D9);                     //ECHO Pin=D9, TRIG Pin=D8
-HCSR04 usensor2(D7,D6);                     //ECHO Pin=D7, TRIG Pin=D6
 Serial pc(USBTX,USBRX);                     //Serial Communication with PC
-ESP8266 wifi(PTC17, PTC16, 115200);         //Tx Pin:PTC17; Rx Pin:PTC17; Baud rate:115200
+
 
 void wifi_send(void);;                      //Connect and Push Data Channel to Cloud Server
 
@@ -28,104 +30,40 @@
 int main()
 {
     pc.baud(115200);                        //Baud Rate of 115200 for Tera Term
-    
-    pc.printf("########  ######  ####  ######      ######  ##    ##  ######  ######## ######## ##     ##\n\r");
-    pc.printf("##       ##    ##  ##  ##    ##    ##    ##  ##  ##  ##    ##    ##    ##       ###   ###\n\r");
-    pc.printf("##       ##        ##  ##          ##         ####   ##          ##    ##       #### ####\n\r");
-    pc.printf("######   ##        ##   ######      ######     ##     ######     ##    ######   ## ### ##\n\r");
-    pc.printf("##       ##        ##        ##          ##    ##          ##    ##    ##       ##     ##\n\r");
-    pc.printf("##       ##    ##  ##  ##    ##    ##    ##    ##    ##    ##    ##    ##       ##     ##\n\r");
-    pc.printf("########  ######  ####  ######      ######     ##     ######     ##    ######## ##     ##\n\r");
-    pc.printf("-----------------------------------------------------------------------------------------\n\r");
-    pc.printf("Developed By: Priyank Kalgaonkar\n\r");
-    pc.printf("-----------------------------------------------------------------------------------------\n\r\n\r");
-    
+
     pc.printf("Initial Setup\r\n");
-    wifi.SetMode(1);                        //Set ESP mode to 1
-    wifi.RcvReply(rcv, 1000);               //Receive a response from ESP
-    pc.printf("%s\r", rcv);
-
-    pc.printf("Connecting to WiFi\r\n");    //AP Setup Initialization
-    wifi.Join("Z", "12345678");//Put your Wifi SSID followed by Password WiFi_SSID WiFi_Password
-    wifi.RcvReply(rcv, 1000);
-    pc.printf("%s\n", rcv);
-    wait(8);
-    
-    wifi.GetIP(rcv);                        //Obtains an IP address from the AP
-    
-    while (1) 
-    {
-        wifi_send();
-        
-        RLed = 1;
-        GLed = 1;
-        BLed = 0;
-        wait(2.0f);
-    }
-}
-
-void wifi_send(void)
-{
+ 
     while(num<1000000000000)
     {
         num=num+1;
-        pc.printf("\nCloud Sync Instance #: %d\n\r", num);
-        pc.printf("Syncing Data with Cloud, Please Wait.\n\r");
+    //checking for switch value to detect traffic light 
+        if(sw2 == 0) {
+        myRGBled.write(1.0,0.0,0.0); //red
+        printf("Red light detected; applying breaks\n\r");
+        wait(1.0);
+        }else{
+     myRGBled.write(0.0,1.0,0.0); //green
         
     //Ultrasound Sensor (HC-SR04) #1 Initialization
-        int a = 30;
         usensor1.start();
         wait_ms(500);
         
-    //Calculating Distance Percentage Remaining for Sensor # 1
+    //Calculating Distance for Sensor # 1
         distance1 = usensor1.get_dist_cm();
-        dist_remaining1 = a-distance1;
-        dist_percent1 = (dist_remaining1/30)*100;
-        
+
     //LED and Tera Term Output
-        if (distance1<30 && distance2<30) {
-            RLed = 1;
-            BLed = 1;
-            GLed = 0;
-            //printf("Percent remaining: %f\r", dist_percent1 && dist_percent2);
-        } else {
-            GLed = 1;
-            BLed = 1;
-            RLed = 0;
-            printf("Shelves Empty! Replenish Stock.\n\r");
-        }    
-        
-    //Sending Data to the Cloud Server via ESP8266 WiFi Module
-        strcpy(snd,"AT+CIPMUX=0\n\r");        //AT+CIPMUX: Enabling Single Channel Mode
-        wifi.SendCMD(snd);
-        wait(1);
-        wifi.RcvReply(rcv, 1000);
-        wait(1);
-        
-    //Establish TCP connection w/ Cloud Server
-        sprintf(snd,"AT+CIPSTART=4,\"TCP\",\"%s\",80\n",CloudIP);
-        wait(1);
-        wifi.RcvReply(rcv, 1000);
-        wait(1);
-        
-    //Set length of the data that will be sent
-        strcpy(snd,"AT+CIPSEND=100\n\r");
-        wifi.SendCMD(snd);
-        pc.printf("%s\r", rcv);
-        wait(1);
-        wifi.RcvReply(rcv, 1000);
-        pc.printf("%s\r", rcv);
-        wait(1);
-        
-    //Pushing the data acquired from HC-SR04 Ultrasonic Sensor to Cloud Server via API
-    //Replace with your own API Request - Write a Channel Feed below
-        pc.printf("Product X - Sensor 1: \n\r");
-        sprintf(snd,"\r ***Replace with your own API Request - Write a Channel Feed below*** \r", dist_percent1);
-        printf("Percent Stock X Remaining: %f\n\r", dist_percent1);
-        wifi.SendCMD(snd);
-        pc.printf("%s\r",snd);
-        wait(0.5);
-        wifi.RcvReply(rcv, 1000);
-        pc.printf("%s\r", rcv);     
-    }
-}
\ No newline at end of file
+            if (distance1<10) {
+                RLed = 1;
+                BLed = 0;
+                GLed = 0;
+                printf("Emergency Brakes Engaged %u\n\r", distance1);
+                wait(1.0);
+            } else {
+                GLed = 1;
+                BLed = 0;
+                RLed = 0;
+                printf("Distance: %u\n\r", distance1); 
+            }    //end nested-if
+        }   //end if
+    }   //end while
+}   //end main
\ No newline at end of file