add M10_config_gui

source/CRC16_CCITT.py

@@ -0,0 +1,71 @@
+#! python3
+###############################################################################
+# Copyright (c) 2016, PulseRain Technology LLC 
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+###############################################################################
+
+
+
+###############################################################################
+# References:
+# http://stackoverflow.com/questions/25239423/crc-ccitt-16-bit-python-manual-calculation
+###############################################################################
+
+class CRC16_CCITT:
+
+    _POLYNOMIAL = 0x1021
+    _PRESET = 0xFFFF
+
+    def _initial(self, c):
+        crc = 0
+        c = c << 8
+        for j in range(8):
+            if (crc ^ c) & 0x8000:
+                crc = (crc << 1) ^ self._POLYNOMIAL
+            else:
+                crc = crc << 1
+            c = c << 1
+
+        return crc
+
+    def _update_crc(self, crc, c):
+        cc = 0xff & c
+
+        tmp = (crc >> 8) ^ cc
+        crc = (crc << 8) ^ self._tab[tmp & 0xff]
+        crc = crc & 0xffff
+
+        return crc
+
+    def __init__ (self):
+        self._tab = [ self._initial(i) for i in range(256) ]
+
+    def get_crc (self, data_list):
+        crc = self._PRESET
+        for c in data_list:
+            crc = self._update_crc(crc, c)
+        return [(crc >> 8) & 0xFF, crc & 0xFF]     
+
+
+def main():
+
+    crc = CRC16_CCITT ()
+
+    for i in range(256):
+        print ("0x{0:08x},".format(crc._tab[i]))
+
+if __name__ == "__main__":
+    main()
+

source/Console_Input.py

@@ -0,0 +1,288 @@
+#! python3
+###############################################################################
+# Copyright (c) 2016, PulseRain Technology LLC 
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+###############################################################################
+
+
+
+#############################################################################
+# Console_Input : Input class for Config Console
+#
+# References:
+# [1] http://code.activestate.com/recipes/134892/
+# [2] http://stackoverflow.com/questions/6179537/python-wait-x-secs-for-a-key-and-continue-execution-if-not-pressed
+# [3] rlcompleter — Completion function for GNU readline, https://docs.python.org/2/library/rlcompleter.html
+#############################################################################
+
+
+#############################################################################
+# Getch() Implementation
+#
+# See Ref[1] for more infomation
+#############################################################################
+
+class _GetchUnix:
+    def __init__(self):
+        import tty, sys
+
+    def __call__(self):
+        import sys, tty, termios
+        fd = sys.stdin.fileno()
+        old_settings = termios.tcgetattr(fd)
+        try:
+            tty.setraw(sys.stdin.fileno())
+            ch = sys.stdin.read(1)
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+        return ch
+
+class _GetchWindows:
+    def __init__(self):
+        import msvcrt
+
+    def __call__(self):
+        import msvcrt
+        return msvcrt.getch()
+
+class _Getch:
+    """Gets a single character from standard input.  Does not echo to the
+    screen."""
+    def __init__(self):
+        try:
+            self.impl = _GetchWindows()
+        except ImportError:
+            self.impl = _GetchUnix()
+
+    def __call__(self): return self.impl()        
+
+
+#############################################################################
+# check keyboard hit (non-blocking fashion)
+#
+# See Ref[2] for more infomation
+#############################################################################
+
+class _KeyboardHitUnix:
+    def __init__(self):
+        pass
+
+    def __call__(self):
+        rlist, wlist, xlist = select([sys.stdin], [], [], 0)
+
+        if rlist:
+            return True
+        else:
+            return False
+
+class _KeyboardHitWindows:
+    def __init__(self):
+        import msvcrt
+
+    def __call__(self):
+        import msvcrt
+        return msvcrt.kbhit()
+
+class _KBHit:
+
+    def __init__(self):
+        try:
+            self.impl = _KeyboardHitWindows()
+        except ImportError:
+            self.impl = _KeyboardHitUnix()
+
+    def __call__(self): return self.impl()        
+
+
+
+#############################################################################
+# Console_Input : input for Config Console
+# 
+# Remarks:
+#  Originally, tab completion can be done through readline package,
+#  as illustrated in Ref[3]. But readline package becomes obsolete after
+#  Python 3. As an alternative, this class is intended to provide a solution
+#  for tab completion in Python 3
+#      In addition, to achieve full duplex for serial port while avoiding
+#  multi-threading, the input can be handled in a non-blocking fashion by
+#  checking the keyboard hit.  
+#      Although this class is written as a support class for OCD console,
+#  It can be used more generally.
+#############################################################################
+
+class Console_Input:
+
+    _CONSOLE_INPUT_MAX_LENGTH = 80
+
+    #========================================================================
+    # __init__
+    #
+    # Parameter:
+    #    prompt: Input prompt, such as ">> "
+    #    commands: list of valid commands. This is used by tab completion
+    #========================================================================
+
+    def __init__ (self, prompt, commands):
+        self._getch = _Getch()
+        self._kbhit = _KBHit()
+
+        self._commands = commands
+        self._line = ""
+        self._history = []
+        self._prompt = prompt
+        self.uart_raw_mode_enable = 0
+
+    #========================================================================
+    # only letter/number and some symbols are allowed
+    #========================================================================
+
+    def _input_valid (self, ord_c):
+        if ( ((ord_c >= ord('0')) and ((ord_c <= ord('9')))) or \
+             ((ord_c >= ord('a')) and ((ord_c <= ord('z')))) or \
+             ((ord_c >= ord('A')) and ((ord_c <= ord('Z')))) or \
+             (ord_c == ord('_')) or \
+             (ord_c == ord(':')) or \
+             (ord_c == ord('\\')) or \
+             (ord_c == ord('.')) or \
+             (ord_c == ord('/')) or \
+             (ord_c == ord(' ')) ):
+             return 1
+        else:
+             return 0
+
+    #========================================================================
+    # tab completion based on _commands 
+    #========================================================================
+
+    def _tab_completion (self):
+        match_cmds = [i for i in self._commands if i.startswith (self._line)]
+        match_cmds_trimmed = [i[len(self._line):] for i in match_cmds]
+
+        greatest_common_len = 0
+        if (len(match_cmds_trimmed)):
+            min_len = min([len(i) for i in match_cmds_trimmed])
+        else:
+            min_len = 0
+
+        for i in range(min_len):
+            count = 0
+            for cmd in match_cmds_trimmed:
+                if (cmd[i] == match_cmds_trimmed[0][i]):
+                    count = count + 1
+
+            if (count == len(match_cmds_trimmed)):
+                greatest_common_len = greatest_common_len + 1
+            else:
+                break
+
+        if (greatest_common_len):
+            print (match_cmds_trimmed[0][0:greatest_common_len], end="", flush=True)
+            return (match_cmds_trimmed[0][0:greatest_common_len])
+        else:
+            return ("")
+
+    #========================================================================
+    # use backspace to clear line
+    #========================================================================
+
+    def _clear_line (self):
+        for i in range (Console_Input._CONSOLE_INPUT_MAX_LENGTH):
+            print ("\b \b", end="", flush=True)
+
+        print (self._prompt, end="", flush=True)
+
+    #========================================================================
+    # command input history
+    #========================================================================
+
+    def _get_history (self, index):
+        if ((index >= 0) and (index < len (self._history))):
+            self._clear_line()
+            self._line = self._history [index]
+            print (self._line, end="", flush=True)
+
+
+    def input (self):
+        self._line = ""
+        history_index = len (self._history)
+
+        if (self.uart_raw_mode_enable == 0):
+            print (self._prompt, end="", flush=True)
+
+        while(1):
+            if (self.uart_raw_mode_enable):
+                if self._kbhit():
+                    c = self._getch()
+                else:
+                    c = chr(0)
+            else:
+                c = self._getch()
+
+            if (self.uart_raw_mode_enable):
+                if (ord(c) == 0):
+                    self._line = ""
+                else:
+                    self._line = c.decode()
+                break
+
+            if (ord(c) > 127):
+                c = self._getch()
+                if (ord(c) == ord('H')): # up arrow
+                    if (history_index >= 0):
+                        history_index = history_index - 1
+                    self._get_history(history_index)
+                elif (ord(c) == ord('P')): # down arrow    
+                    if (history_index < (len(self._history) - 1)):
+                        history_index = history_index + 1
+                    self._get_history(history_index)
+
+            elif (self._input_valid(ord(c))):
+                print (c.decode(), end="", flush=True)
+                self._line = self._line + c.decode()
+            elif (ord(c) == ord('\r')):
+                print ("");
+                break
+            elif (ord(c) == ord('\t')):
+                self._line = self._line + self._tab_completion()
+            elif (ord(c) == 8): # backspace
+                if (len (self._line)):
+                    print ("\b \b", end="", flush=True)
+                    self._line = self._line[:-1]
+
+        if (len(self._line)):
+            if (len(self._history)):
+                if (self._history[len(self._history) - 1] == self._line):
+                    pass
+                elif (self.uart_raw_mode_enable == 0):
+                    self._history.append (self._line)
+            elif (self.uart_raw_mode_enable == 0):        
+                self._history.append (self._line)
+
+        return self._line
+
+
+#############################################################################
+# Main
+#############################################################################
+
+def main():
+
+    console_stdin = Console_Input(">> ", ["help", "cpu_reset", "cpu_resume", "cpu_pause"])
+    for i in range (5):
+        console_stdin.input()
+
+if __name__ == "__main__":
+    main()        
+