Revision 1:589beced7ccc, committed 2017-07-30

Comitter:

Thom_cass

Date:

Sun Jul 30 12:06:24 2017 +0000

Parent:

0:fcc2576568f1

Commit message:

With this code you will be able to link a mbed variable to a python variable.

Changed in this revision

diff -r fcc2576568f1 -r 589beced7ccc GUI.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GUI.py	Sun Jul 30 12:06:24 2017 +0000
@@ -0,0 +1,50 @@
+# coding: utf8
+
+#linux command to execute the script : python 'path'/RPC_test_code/GUI.py
+
+
+from Tkinter import *   #GUI Librairie              
+from mbedrpc import *   #Libraire to link serial communication mbed <=> PC, (serial or http)
+
+mbed = SerialRPC('/dev/ttyACM0', 9600)      #setup on the serial port ACM0.
+#You can check what port you are using with a linux shell command : ls /dev/ttyACM*
+#9600 : default baudrate
+
+
+
+#------------RPCvariable
+
+Blink = RPCVariable(mbed,"Blink_RPC")   #Create a new variable : name= Blink_RPC, on the mbed setup before, link to the mbed variable Blink
+
+
+#--------------GUI display
+root = Tk()                                     #creation a new window
+root.title('Blinking led')              #display title
+root.geometry('150x50+200+200')                 #Set geometry of root window
+
+
+Area = LabelFrame(root,text = "Blinking mode : ")   #area creation
+Area.pack(fill="x",expand="yes")
+
+
+#--update function
+def update():                   
+
+    if(var.get() == 0):
+        Blink.write(1)      #change Blink_RPC value on mbed
+        print 'Blinking'    #Linux terminal output
+        var.set(1)          #change var value for the next clic
+
+    else:
+        Blink.write(0)      #change Blink_RPc value
+        print 'No blink'     
+        var.set(0)
+    
+
+#---------------------------create a simple button
+var = DoubleVar()
+var.set(0)
+Blink_button = Button(Area, text="Blink", command = update) #command = update => call function update() when you clic button
+Blink_button.pack()
+
+root.mainloop()
\ No newline at end of file

diff -r fcc2576568f1 -r 589beced7ccc mbedrpc.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbedrpc.py	Sun Jul 30 12:06:24 2017 +0000
@@ -0,0 +1,225 @@
+# mbedRPC.py - mbed RPC interface for Python
+#
+##Copyright (c) 2010 ARM Ltd
+##
+##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.
+#
+# Example:
+# >from mbedRPC import*
+# >mbed = SerialRPC("COM5",9600)
+# >myled = DigitalOut(mbed,"myled") <--- Where the text in quotations matches your RPC pin definition's second parameter, in this case it could be RpcDigitalOut myled(LED1,"myled");
+# >myled.write(1)
+# >
+
+import serial, urllib2, time
+
+# mbed super class
+class mbed:
+    def __init__(self):
+        print("This will work as a demo but no transport mechanism has been selected")
+
+    def rpc(self, name, method, args):
+        print("Superclass method not overridden")
+
+
+# Transport mechanisms, derived from mbed
+class SerialRPC(mbed):
+    def __init__(self, port, baud):
+        self.ser = serial.Serial(port)
+        self.ser.setBaudrate(baud)
+
+    def rpc(self, name, method, args):
+        # creates the command to be sent serially - /name/method arg1 arg2 arg3 ... argN
+        str = "/" + name + "/" + method + " " + " ".join(args) + "\n"
+        # prints the command being executed
+        print str
+        # writes the command to serial
+        self.ser.write(str)
+        # strips trailing characters from the line just written
+        ret_val = self.ser.readline().strip()
+        return ret_val
+
+
+class HTTPRPC(mbed):
+    def __init__(self, ip):
+        self.host = "http://" + ip
+
+    def rpc(self, name, method, args):
+        response = urllib2.urlopen(self.host + "/rpc/" + name + "/" + method + "%20" + "%20".join(args))
+        return response.read().strip()
+
+
+# generic mbed interface super class
+class mbed_interface():
+    # initialize an mbed interface with a transport mechanism and pin name
+    def __init__(self, this_mbed, mpin):
+        self.mbed = this_mbed
+        if isinstance(mpin, str):
+            self.name = mpin
+
+    def __del__(self):
+        r = self.mbed.rpc(self.name, "delete", [])
+
+    def new(self, class_name, name, pin1, pin2 = "", pin3 = ""):
+        args = [arg for arg in [pin1,pin2,pin3,name] if arg != ""]
+        r = self.mbed.rpc(class_name, "new", args)
+
+    # generic read
+    def read(self):
+        r = self.mbed.rpc(self.name, "read", [])
+        return int(r)
+
+
+# for classes that need write functionality - inherits from the generic reading interface
+class mbed_interface_write(mbed_interface):
+    def __init__(self, this_mbed, mpin):
+        mbed_interface.__init__(self, this_mbed, mpin)
+
+    # generic write
+    def write(self, value):
+        r = self.mbed.rpc(self.name, "write", [str(value)])
+
+
+# mbed interfaces
+class DigitalOut(mbed_interface_write):
+    def __init__(self, this_mbed, mpin):
+        mbed_interface_write.__init__(self, this_mbed, mpin)
+
+
+class AnalogIn(mbed_interface):
+    def __init__(self, this_mbed, mpin):
+        mbed_interface.__init__(self, this_mbed, mpin)
+
+    def read_u16(self):
+        r = self.mbed.rpc(self.name, "read_u16", [])
+        return int(r)
+
+
+class AnalogOut(mbed_interface_write):
+    def __init__(self, this_mbed, mpin):
+        mbed_interface_write.__init__(self, this_mbed, mpin)
+
+    def write_u16(self, value):
+        self.mbed.rpc(self.name, "write_u16", [str(value)])
+
+    def read(self):
+        r = self.mbed.rpc(self.name, "read", [])
+        return float(r)
+
+
+class DigitalIn(mbed_interface):
+    def __init__(self, this_mbed, mpin):
+        mbed_interface.__init__(self, this_mbed, mpin)
+
+
+class PwmOut(mbed_interface_write):
+    def __init__(self, this_mbed, mpin):
+        mbed_interface_write.__init__(self, this_mbed, mpin)
+
+    def read(self):
+        r = self.mbed.rpc(self.name, "read", [])
+        return r
+
+    def period(self, value):
+        self.mbed.rpc(self.name, "period", [str(value)])
+
+    def period_ms(self, value):
+        self.mbed.rpc(self.name, "period_ms", [str(value)])
+
+    def period_us(self, value):
+        self.mbed.rpc(self.name, "period_us", [str(value)])
+
+    def pulsewidth(self, value):
+        self.mbed.rpc(self.name, "pulsewidth", [str(value)])
+
+    def pulsewidth_ms(self, value):
+        self.mbed.rpc(self.name, "pulsewidth_ms", [str(value)])
+
+    def pulsewidth_us(self, value):
+        self.mbed.rpc(self.name, "pulsewidth_us", [str(value)])
+
+
+class RPCFunction(mbed_interface):
+    def __init__(self, this_mbed, name):
+        mbed_interface.__init__(self, this_mbed, name)
+
+    def run(self, input):
+        r = self.mbed.rpc(self.name, "run", [input])
+        return r
+
+
+class RPCVariable(mbed_interface_write):
+    def __init__(self, this_mbed, name):
+        mbed_interface_write.__init__(self, this_mbed, name)
+
+    def read(self):
+        r = self.mbed.rpc(self.name, "read", [])
+        return r
+
+class Timer(mbed_interface):
+    def __init__(self, this_mbed, name):
+        mbed_interface.__init__(self, this_mbed, name)
+
+    def start(self):
+        r = self.mbed.rpc(self.name, "start", [])
+
+    def stop(self):
+        r = self.mbed.rpc(self.name, "stop", [])
+
+    def reset(self):
+        r = self.mbed.rpc(self.name, "reset", [])
+
+    def read(self):
+        r = self.mbed.rpc(self.name, "read", [])
+        return float(re.search('\d+\.*\d*', r).group(0))
+
+    def read_ms(self):
+        r = self.mbed.rpc(self.name, "read_ms", [])
+        return float(re.search('\d+\.*\d*', r).group(0))
+
+    def read_us(self):
+        r = self.mbed.rpc(self.name, "read_us", [])
+        return float(re.search('\d+\.*\d*', r).group(0))
+
+# Serial
+class Serial():
+    def __init__(self, this_mbed, tx, rx=""):
+        self.mbed = this_mbed
+        if isinstance(tx, str):
+            self.name = tx
+
+    def __del__(self):
+        r = self.mbed.rpc(self.name, "delete", [])
+
+    def baud(self, value):
+        r = self.mbed.rpc(self.name, "baud", [str(value)])
+
+    def putc(self, value):
+        r = self.mbed.rpc(self.name, "putc", [str(value)])
+
+    def puts(self, value):
+        r = self.mbed.rpc(self.name, "puts", ["\"" + str(value) + "\""])
+
+    def getc(self):
+        r = self.mbed.rpc(self.name, "getc", [])
+        return int(r)
+
+
+def wait(s):
+    time.sleep(s)
\ No newline at end of file

diff -r fcc2576568f1 -r 589beced7ccc read-me.txt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/read-me.txt	Sun Jul 30 12:06:24 2017 +0000
@@ -0,0 +1,9 @@
+to execute the python script with linux :
+
+create a folder with GUI.py , mbedrpc.py on it.
+
+and execute : python 'path'/'folder'/GUI.py
+
+If you have an error with the serialPort, check where is connect the controller : ls /dev/ttyACM*
+
+If permission is denied, add it with : sudo chmod a+rw,u+rw,o+rw /dev/ttyACM'X'    with 'X'=> name of serialport 
\ No newline at end of file