134 lines
4.5 KiB
Python
Executable File
134 lines
4.5 KiB
Python
Executable File
#!/usr/bin/env python2
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# Script to implement a test console with firmware over serial port
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#
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# Copyright (C) 2016,2017 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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import sys, optparse, os, re, logging
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import reactor, serialhdl, pins, util, msgproto
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re_eval = re.compile(r'\{(?P<eval>[^}]*)\}')
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class KeyboardReader:
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def __init__(self, ser, reactor):
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self.ser = ser
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self.reactor = reactor
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self.fd = sys.stdin.fileno()
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util.set_nonblock(self.fd)
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self.mcu_freq = 0
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self.pins = None
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self.data = ""
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reactor.register_fd(self.fd, self.process_kbd)
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self.connect_timer = reactor.register_timer(self.connect, reactor.NOW)
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self.local_commands = {
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"PINS": self.set_pin_map, "SET": self.set_var, "DELAY": self.delay
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}
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self.eval_globals = {}
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def connect(self, eventtime):
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self.ser.connect()
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self.ser.handle_default = self.handle_default
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self.mcu_freq = self.ser.msgparser.get_constant_float('CLOCK_FREQ')
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mcu = self.ser.msgparser.get_constant('MCU')
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self.pins = pins.get_pin_map(mcu)
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self.reactor.unregister_timer(self.connect_timer)
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return self.reactor.NEVER
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def output(self, msg):
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sys.stdout.write("%s\n" % (msg,))
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sys.stdout.flush()
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def handle_default(self, params):
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self.output(self.ser.msgparser.format_params(params))
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def update_evals(self, eventtime):
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self.eval_globals['freq'] = self.mcu_freq
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self.eval_globals['clock'] = self.ser.get_clock(eventtime)
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def set_pin_map(self, parts):
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mcu = self.ser.msgparser.get_constant('MCU')
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self.pins = pins.get_pin_map(mcu, parts[1])
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def set_var(self, parts):
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val = parts[2]
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try:
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val = float(val)
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except ValueError:
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pass
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self.eval_globals[parts[1]] = val
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def delay(self, parts):
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try:
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val = int(parts[1])
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except ValueError as e:
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self.output("Error: %s" % (str(e),))
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return
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try:
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msg = self.ser.msgparser.create_command(' '.join(parts[2:]))
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except msgproto.error as e:
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self.output("Error: %s" % (str(e),))
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return
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self.ser.send(msg, minclock=val)
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def translate(self, line, eventtime):
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evalparts = re_eval.split(line)
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if len(evalparts) > 1:
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self.update_evals(eventtime)
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try:
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for i in range(1, len(evalparts), 2):
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e = eval(evalparts[i], self.eval_globals)
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if type(e) == type(0.):
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e = int(e)
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evalparts[i] = str(e)
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except:
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self.output("Unable to evaluate: %s" % (line,))
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return None
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line = ''.join(evalparts)
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self.output("Eval: %s" % (line,))
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if self.pins is not None:
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try:
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line = pins.update_command(
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line, self.mcu_freq, self.pins).strip()
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except:
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self.output("Unable to map pin: %s" % (line,))
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return None
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if line:
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parts = line.split()
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if parts[0] in self.local_commands:
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self.local_commands[parts[0]](parts)
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return None
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try:
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msg = self.ser.msgparser.create_command(line)
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except msgproto.error as e:
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self.output("Error: %s" % (str(e),))
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return None
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return msg
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def process_kbd(self, eventtime):
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self.data += os.read(self.fd, 4096)
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kbdlines = self.data.split('\n')
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for line in kbdlines[:-1]:
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line = line.strip()
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cpos = line.find('#')
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if cpos >= 0:
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line = line[:cpos]
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if not line:
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continue
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msg = self.translate(line.strip(), eventtime)
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if msg is None:
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continue
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self.ser.send(msg)
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self.data = kbdlines[-1]
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def main():
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usage = "%prog [options] <serialdevice> <baud>"
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opts = optparse.OptionParser(usage)
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options, args = opts.parse_args()
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serialport, baud = args
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baud = int(baud)
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logging.basicConfig(level=logging.DEBUG)
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r = reactor.Reactor()
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ser = serialhdl.SerialReader(r, serialport, baud)
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kbd = KeyboardReader(ser, r)
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try:
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r.run()
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except KeyboardInterrupt:
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sys.stdout.write("\n")
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if __name__ == '__main__':
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main()
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