mirror of
https://github.com/licsber/micropython.git
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bc1488a05f
Improvements are: 2 ctrl-C's are now needed to truly kill running script on pyboard, so make CDC interface allow multiple ctrl-C's through at once (ie sending b'\x03\x03' to pyboard now counts as 2 ctrl-C's). ctrl-C in friendly-repl can now stop multi-line input. In raw-repl mode, use ctrl-D to indicate end of running script, and also end of any error message. Thus, output of raw-repl is always at least 2 ctrl-D's and it's much easier to parse. pyboard.py is now a bit faster, handles exceptions from pyboard better (prints them and exits with exit code 1), prints out the pyboard output while the script is running (instead of waiting till the end), and allows to follow the output of a previous script when run with no arguments.
248 lines
7.4 KiB
Python
Executable File
248 lines
7.4 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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pyboard interface
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This module provides the Pyboard class, used to communicate with and
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control the pyboard over a serial USB connection.
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Example usage:
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import pyboard
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pyb = pyboard.Pyboard('/dev/ttyACM0')
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pyb.enter_raw_repl()
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pyb.exec('pyb.LED(1).on()')
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pyb.exit_raw_repl()
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To run a script from the local machine on the board and print out the results:
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import pyboard
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pyboard.execfile('test.py', device='/dev/ttyACM0')
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This script can also be run directly. To execute a local script, use:
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./pyboard.py test.py
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Or:
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python pyboard.py test.py
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"""
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import sys
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import time
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import serial
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class PyboardError(BaseException):
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pass
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class Pyboard:
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def __init__(self, serial_device):
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self.serial = serial.Serial(serial_device, baudrate=115200, interCharTimeout=1)
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def close(self):
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self.serial.close()
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def read_until(self, min_num_bytes, ending, timeout=10, data_consumer=None):
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data = self.serial.read(min_num_bytes)
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if data_consumer:
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data_consumer(data)
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timeout_count = 0
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while True:
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if data.endswith(ending):
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break
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elif self.serial.inWaiting() > 0:
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new_data = self.serial.read(1)
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data = data + new_data
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if data_consumer:
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data_consumer(new_data)
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#time.sleep(0.01)
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timeout_count = 0
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else:
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timeout_count += 1
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if timeout_count >= 10 * timeout:
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break
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time.sleep(0.1)
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return data
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def enter_raw_repl(self):
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self.serial.write(b'\r\x03\x03') # ctrl-C twice: interrupt any running program
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self.serial.write(b'\r\x01') # ctrl-A: enter raw REPL
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data = self.read_until(1, b'to exit\r\n>')
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if not data.endswith(b'raw REPL; CTRL-B to exit\r\n>'):
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print(data)
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raise PyboardError('could not enter raw repl')
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self.serial.write(b'\x04') # ctrl-D: soft reset
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data = self.read_until(1, b'to exit\r\n>')
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if not data.endswith(b'raw REPL; CTRL-B to exit\r\n>'):
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print(data)
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raise PyboardError('could not enter raw repl')
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def exit_raw_repl(self):
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self.serial.write(b'\r\x02') # ctrl-B: enter friendly REPL
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def follow(self, data_consumer=False):
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# wait for normal output
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data = self.read_until(1, b'\x04', data_consumer=data_consumer)
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if not data.endswith(b'\x04'):
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raise PyboardError('timeout waiting for first EOF reception')
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data = data[:-1]
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# wait for error output
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data_err = self.read_until(2, b'\x04>')
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if not data_err.endswith(b'\x04>'):
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raise PyboardError('timeout waiting for second EOF reception')
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data_err = data_err[:-2]
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# return normal and error output
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return data, data_err
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def exec_raw(self, command, data_consumer=False):
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if isinstance(command, bytes):
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command_bytes = command
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else:
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command_bytes = bytes(command, encoding='ascii')
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# write command
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for i in range(0, len(command_bytes), 32):
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self.serial.write(command_bytes[i:min(i+32, len(command_bytes))])
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time.sleep(0.01)
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self.serial.write(b'\x04')
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# check if we could exec command
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data = self.serial.read(2)
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if data != b'OK':
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raise PyboardError('could not exec command')
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return self.follow(data_consumer)
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def eval(self, expression):
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ret = self.exec('print({})'.format(expression))
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ret = ret.strip()
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return ret
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def exec(self, command):
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ret, ret_err = self.exec_raw(command)
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if ret_err:
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raise PyboardError('exception', ret, ret_err)
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return ret
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def execfile(self, filename):
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with open(filename) as f:
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pyfile = f.read()
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return self.exec(pyfile)
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def get_time(self):
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t = str(self.eval('pyb.RTC().datetime()'), encoding='ascii')[1:-1].split(', ')
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return int(t[4]) * 3600 + int(t[5]) * 60 + int(t[6])
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def execfile(filename, device='/dev/ttyACM0'):
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pyb = Pyboard(device)
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pyb.enter_raw_repl()
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output = pyb.execfile(filename)
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print(str(output, encoding='ascii'), end='')
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pyb.exit_raw_repl()
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pyb.close()
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def run_test(device):
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pyb = Pyboard(device)
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pyb.enter_raw_repl()
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print('opened device {}'.format(device))
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pyb.exec('import pyb') # module pyb no longer imported by default, required for pyboard tests
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print('seconds since boot:', pyb.get_time())
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pyb.exec('def apply(l, f):\r\n for item in l:\r\n f(item)\r\n')
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pyb.exec('leds=[pyb.LED(l) for l in range(1, 5)]')
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pyb.exec('apply(leds, lambda l:l.off())')
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## USR switch test
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pyb.exec('switch = pyb.Switch()')
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for i in range(2):
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print("press USR button")
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pyb.exec('while switch(): pyb.delay(10)')
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pyb.exec('while not switch(): pyb.delay(10)')
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print('USR switch passed')
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## accel test
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if True:
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print("hold level")
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pyb.exec('accel = pyb.Accel()')
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pyb.exec('while abs(accel.x()) > 10 or abs(accel.y()) > 10: pyb.delay(10)')
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print("tilt left")
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pyb.exec('while accel.x() > -10: pyb.delay(10)')
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pyb.exec('leds[0].on()')
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print("tilt forward")
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pyb.exec('while accel.y() < 10: pyb.delay(10)')
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pyb.exec('leds[1].on()')
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print("tilt right")
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pyb.exec('while accel.x() < 10: pyb.delay(10)')
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pyb.exec('leds[2].on()')
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print("tilt backward")
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pyb.exec('while accel.y() > -10: pyb.delay(10)')
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pyb.exec('leds[3].on()')
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print('accel passed')
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print('seconds since boot:', pyb.get_time())
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pyb.exec('apply(leds, lambda l:l.off())')
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pyb.exit_raw_repl()
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pyb.close()
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def main():
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import argparse
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cmd_parser = argparse.ArgumentParser(description='Run scripts on the pyboard.')
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cmd_parser.add_argument('--device', default='/dev/ttyACM0', help='the serial device of the pyboard')
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cmd_parser.add_argument('--test', action='store_true', help='run a small test suite on the pyboard')
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cmd_parser.add_argument('files', nargs='*', help='input files')
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args = cmd_parser.parse_args()
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if args.test:
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run_test(device=args.device)
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if len(args.files) == 0:
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try:
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pyb = Pyboard(args.device)
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ret, ret_err = pyb.follow(data_consumer=lambda d:print(str(d, encoding='ascii'), end=''))
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pyb.close()
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except PyboardError as er:
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print(er)
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sys.exit(1)
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except KeyboardInterrupt:
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sys.exit(1)
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if ret_err:
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print(str(ret_err, encoding='ascii'), end='')
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sys.exit(1)
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for filename in args.files:
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try:
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pyb = Pyboard(args.device)
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pyb.enter_raw_repl()
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with open(filename) as f:
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pyfile = f.read()
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ret, ret_err = pyb.exec_raw(pyfile, data_consumer=lambda d:print(str(d, encoding='ascii'), end=''))
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pyb.exit_raw_repl()
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pyb.close()
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except PyboardError as er:
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print(er)
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sys.exit(1)
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except KeyboardInterrupt:
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sys.exit(1)
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if ret_err:
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print(str(ret_err, encoding='ascii'), end='')
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sys.exit(1)
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if __name__ == "__main__":
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main()
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