Revision 0:03bd0f0136f8, committed 2021-05-05

Comitter:

sprasann

Date:

Wed May 05 14:36:02 2021 +0000

Commit message:

final project

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.gitignore	Wed May 05 14:36:02 2021 +0000
@@ -0,0 +1,4 @@
+.build
+.mbed
+projectfiles
+*.py*

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CONTRIBUTING.md	Wed May 05 14:36:02 2021 +0000
@@ -0,0 +1,5 @@
+# Contributing to Mbed OS
+
+Mbed OS is an open-source, device software platform for the Internet of Things. Contributions are an important part of the platform, and our goal is to make it as simple as possible to become a contributor.
+
+To encourage productive collaboration, as well as robust, consistent and maintainable code, we have a set of guidelines for [contributing to Mbed OS](https://os.mbed.com/docs/mbed-os/latest/contributing/index.html).

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/README.md	Wed May 05 14:36:02 2021 +0000
@@ -0,0 +1,64 @@
+![](./resources/official_armmbed_example_badge.png)
+# Blinky Mbed OS example
+
+The example project is part of the [Arm Mbed OS Official Examples](https://os.mbed.com/code/) and is the [getting started example for Mbed OS](https://os.mbed.com/docs/mbed-os/v5.14/quick-start/index.html). It contains an application that repeatedly blinks an LED on supported [Mbed boards](https://os.mbed.com/platforms/).
+
+You can build the project with all supported [Mbed OS build tools](https://os.mbed.com/docs/mbed-os/latest/tools/index.html). However, this example project specifically refers to the command-line interface tool [Arm Mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli).
+(Note: To see a rendered example you can import into the Arm Online Compiler, please see our [import quick start](https://os.mbed.com/docs/mbed-os/latest/quick-start/online-with-the-online-compiler.html#importing-the-code).)
+
+1. [Install Mbed CLI](https://os.mbed.com/docs/mbed-os/latest/quick-start/offline-with-mbed-cli.html).
+
+1. Clone this repository on your system, and change the current directory to where the project was cloned:
+
+    ```bash
+    $ git clone git@github.com:armmbed/mbed-os-example-blinky && cd mbed-os-example-blinky
+    ```
+
+    Alternatively, you can download the example project with Arm Mbed CLI using the `import` subcommand:
+
+    ```bash
+    $ mbed import mbed-os-example-blinky && cd mbed-os-example-blinky
+    ```
+
+
+## Application functionality
+
+The `main()` function is the single thread in the application. It toggles the state of a digital output connected to an LED on the board.
+
+## Building and running
+
+1. Connect a USB cable between the USB port on the board and the host computer.
+2. <a name="build_cmd"></a> Run the following command to build the example project and program the microcontroller flash memory:
+    ```bash
+    $ mbed compile -m <TARGET> -t <TOOLCHAIN> --flash
+    ```
+The binary is located at `./BUILD/<TARGET>/<TOOLCHAIN>/mbed-os-example-blinky.bin`.
+
+Alternatively, you can manually copy the binary to the board, which you mount on the host computer over USB.
+
+Depending on the target, you can build the example project with the `GCC_ARM`, `ARM` or `IAR` toolchain. After installing Arm Mbed CLI, run the command below to determine which toolchain supports your target:
+
+```bash
+$ mbed compile -S
+```
+
+## Expected output
+The LED on your target turns on and off every 500 milliseconds.
+
+
+## Troubleshooting
+If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it.
+
+## Related Links
+
+* [Mbed OS Stats API](https://os.mbed.com/docs/latest/apis/mbed-statistics.html).
+* [Mbed OS Configuration](https://os.mbed.com/docs/latest/reference/configuration.html).
+* [Mbed OS Serial Communication](https://os.mbed.com/docs/latest/tutorials/serial-communication.html).
+* [Mbed OS bare metal](https://os.mbed.com/docs/mbed-os/latest/reference/mbed-os-bare-metal.html).
+* [Mbed boards](https://os.mbed.com/platforms/).
+
+### License and contributions
+
+The software is provided under Apache-2.0 license. Contributions to this project are accepted under the same license. Please see contributing.md for more info.
+
+This project contains code from other projects. The original license text is included in those source files. They must comply with our license guide.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Servo.lib	Wed May 05 14:36:02 2021 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/simon/code/Servo/#36b69a7ced07

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hcsr04.cpp	Wed May 05 14:36:02 2021 +0000
@@ -0,0 +1,98 @@
+/* Copyright (c) 2013 Prabhu Desai
+ * pdtechworld@gmail.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "hcsr04.h"
+
+
+HCSR04::HCSR04(PinName TrigPin,PinName EchoPin):
+    trigger(TrigPin), echo(EchoPin)
+{
+    pulsetime.stop();
+    pulsetime.reset();
+    echo.rise(this,&HCSR04::isr_rise);
+    echo.fall(this,&HCSR04::isr_fall);
+    trigger=0;
+}
+
+HCSR04::~HCSR04()
+{
+}
+
+void HCSR04::isr_rise(void)
+{
+    pulsetime.start();
+}
+void HCSR04::start(void)
+{
+    trigger=1;
+    wait_us(10);
+    trigger=0;
+}
+
+void HCSR04::isr_fall(void)
+{
+    pulsetime.stop();
+    pulsedur = pulsetime.read_us();
+    distance= (pulsedur*343)/20000;
+    pulsetime.reset();
+}
+
+void HCSR04::rise (void (*fptr)(void))
+{
+    echo.rise(fptr);
+}
+void HCSR04::fall (void (*fptr)(void))
+{
+    echo.fall(fptr);
+}
+
+unsigned int HCSR04::get_dist_cm()
+{
+    return distance;
+}
+unsigned int HCSR04::get_pulse_us()
+{
+    return pulsedur;
+}
+
+
+
+/*******************************************************
+   Here is a sample code usage
+********************************************************* 
+#include "hcsr04.h"
+HCSR04  usensor(p25,p6);
+int main()
+{
+    unsigned char count=0;
+    while(1) {
+        usensor.start();
+        wait_ms(500); 
+        dist=usensor.get_dist_cm();
+        lcd.cls();
+        lcd.locate(0,0);
+        lcd.printf("cm:%ld",dist );
+ 
+        count++;
+        lcd.locate(0,1);
+        lcd.printf("Distance =%d",count);
+        
+    }
+*/
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hcsr04.h	Wed May 05 14:36:02 2021 +0000
@@ -0,0 +1,68 @@
+/* Copyright (c) 2013 Prabhu Desai
+ * pdtechworld@gmail.com
+ *
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * For more details on the sensor :
+ * http://www.elecfreaks.com/store/hcsr04-ultrasonic-sensor-distance-measuring-module-p-91.html?zenid=pgm8pgnvaodbe36dibq5s1soi3
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef MBED_HCSR04_H
+#define MBED_HCSR04_H
+
+#include "mbed.h"
+
+/** HCSR04 Class(es)
+ */
+
+class HCSR04
+{
+public:
+    /** Create a HCSR04 object connected to the specified pin
+    * @param pin i/o pin to connect to
+    */
+    HCSR04(PinName TrigPin,PinName EchoPin);
+    ~HCSR04();
+
+    /** Return the distance from obstacle in cm
+    * @param distance in cms and returns -1, in case of failure
+    */
+    unsigned int get_dist_cm(void);
+    /** Return the pulse duration equal to sonic waves travelling to obstacle and back to receiver.
+    * @param pulse duration in microseconds.
+    */
+    unsigned int get_pulse_us(void);
+    /** Generates the trigger pulse of 10us on the trigger PIN.
+    */
+    void start(void );
+    void isr_rise(void);
+    void isr_fall(void);
+    void fall (void (*fptr)(void));
+    void rise (void (*fptr)(void));
+
+
+
+private:
+
+    Timer pulsetime;
+    DigitalOut  trigger;
+    InterruptIn echo;
+    unsigned int pulsedur;
+    unsigned int distance;
+};
+
+#endif
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 05 14:36:02 2021 +0000
@@ -0,0 +1,130 @@
+#include "mbed.h"
+#include "Servo.h"
+#include "hcsr04.h"
+#include "Thread.h"
+
+//pin connections
+Serial pc(USBTX, USBRX);
+Servo myservo(PTA1);
+AnalogIn force(A0);
+HCSR04 usensor(D8,D9);                     //ECHO Pin=D9, TRIG Pin=D8
+DigitalOut red(LED1);
+Serial HC06(PTC15, PTC14); //BT TX, RX
+
+Thread t1;
+Thread t2;
+Thread t3;
+
+Mutex open; //mutex for door
+
+//force sensor thread
+void force_open() {
+    float weight;
+    int door = 0;
+    
+    while(1) {  
+        //read analog pin
+        weight = force.read();
+        printf("force = %f\r\n", weight * 1000);
+    
+        //if object detected or user asks for serving and door closed, then open
+        if((weight*1000) >= 200 && door == 0) { 
+            open.lock();    //lock
+            
+            myservo.write(0.0);
+            door = 1;
+    
+            wait(0.25);
+            //if open for .25 seconds, close - portion control
+            myservo.write(0.75);
+            
+            open.unlock();  //unlock
+            door = 0;
+        }
+        
+        wait(5); //look for bowl every 5 seconds 
+    }
+}
+
+//bluetooth control thread
+void bt_open() {
+    
+    char bt;
+    int door = 0;
+    
+    while(1) {
+        
+        //data from BT
+        if(HC06.readable())
+        {
+            //read
+            bt = HC06.getc();
+            printf("BT=%c\n\r", bt);
+            //open
+            if(bt == '3' && door == 0) {
+                open.lock();    //lock
+                
+                myservo.write(0.0);
+                door = 1;
+                printf("BT START\n\r");
+            }
+            //close - no timer!
+            else if(bt == '4' && door == 1) {
+                myservo.write(0.75); 
+                door = 0;
+                open.unlock(); //unlock
+                
+                printf("BT STOP\n\r");
+            }   
+        }
+    }
+}
+
+//ultrasonic thread
+void empty_detect() {
+    int dist;
+    int count = 0;
+    
+    while(1) {
+        usensor.start();
+    
+        wait_ms(500);
+        dist = usensor.get_dist_cm();   //read
+        printf("distance = %d\n\r", dist);
+        
+        //food is there
+        if(dist > 0 && dist < 28) {
+            red = 1;
+            HC06.printf("0");
+        }
+        else {  //empty
+            red = 0;    //turn on red light
+            
+            if(count % 10 == 0)
+            {
+                //bluetooth message
+                HC06.printf("1");
+                printf("----------------------------------------------\n\r");
+                printf("Notifying user that refill is needed\n\r");
+                printf("----------------------------------------------\n\r");
+            }
+            count++;    //for frequent notification
+        }
+    }
+}
+
+int main()
+{
+    printf("Welcome to Cereal Dispenser\n\r");
+    usensor.start();
+    
+    red = 1;    //LED off
+    
+    while(1) {
+    
+        //start threads
+        t1.start(force_open);
+        t2.start(bt_open);
+        t3.start(empty_detect);
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Wed May 05 14:36:02 2021 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#c9e63f14085f5751ff5ead79a7c0382d50a813a2

Binary file resources/official_armmbed_example_badge.png has changed