Diff: mmPython/mmUSBserial.txt

Revision:

4:92539904a4ad

Child:

8:db29cce17a33

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmPython/mmUSBserial.txt	Sun Sep 01 02:58:57 2013 +0000
@@ -0,0 +1,61 @@
+#!/usr/bin/python -tt                       # tt: detect mixed space/tab.
+#---copyright-----------------------------------#-------------------------------
+#   licensed for personal and academic use.
+#   commercial use must be approved by the account-holder of
+#   gated.clock@gmail.com
+#-------imports---------------------------------#-------------------------------
+import serial                   # serial over USB.
+#=======class===================================#===============================
+if (1):
+    class mmUSBserial():            # USB class.
+#-----------------------------------------------#-------------------------------
+                        # constructor.
+      def __init__(self, idVendor, idProduct):      
+
+        self.__idVendor  = idVendor     # promote to object scope.
+        self.__idProduct = idProduct    # promote to object scope.
+
+        openSuccess = 1
+        self.__serialPort = serial.Serial()
+        self.__serialPort.baudrate = 9600
+
+        for portIndex in range(7, -1, -1):
+          portString = "/dev/ttyACM" + "{}".format(portIndex)
+          self.__serialPort.port = portString
+          try:
+            self.__serialPort.open()
+          except:
+            print("failed to open port {}.").format(portString)
+            openSuccess = 0
+
+          if (openSuccess): break
+          openSuccess = 1
+
+        if (openSuccess): print("successfully opened port {}.").format(portString)
+        else:             print("could not open any port.")
+#-----------------------------------------------#-------------------------------  
+      def __del__(self):                    # destructor.
+        self.__serialPort.close()
+        print "object destroyed."
+#-----------------------------------------------#-------------------------------
+      def write(self,toWrite):      # write a string.
+            nowWrite = toWrite[:7]
+        nowWrite = nowWrite + "$"
+        self.__serialPort.write(nowWrite)
+        return(nowWrite)
+#-----------------------------------------------#-------------------------------
+      def read(self):           # read a string.
+        gotRead = self.__serialPort.read(8)
+        return(gotRead)
+#-----------------------------------------------#-------------------------------
+#===============================================#===============================
+
+
+
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+