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101 lines
3 KiB
Python
101 lines
3 KiB
Python
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# Copyright 2024 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from serial_port_wrapper import SerialPortWrapper
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import sys
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import stm32_crc
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import time
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def go_to_prompt(s):
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s.clear()
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s.write_fast('\x03') # CTRL-C
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read_line = s.read(0.05)
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if not read_line.endswith('>'):
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time.sleep(0.6) # give the microcontroller time to wake from stop mode
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s.write_fast('\x03') # CTRL-C
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read_line = s.read()
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if not read_line.endswith('>'):
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print "ctrl-c response 1: " + read_line
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sys.stderr.write("Couldn't get to a prompt for some reason\n");
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sys.exit(2)
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def finish_session(s, reset=False, verbose=False):
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try:
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go_to_prompt(s)
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if reset:
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if verbose:
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print "Resetting..."
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s.write('reset\x0d')
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while s.readline().find('Launcher') < 0:
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if verbose:
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sys.stdout.write(".")
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sys.stdout.flush()
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finally:
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s.close()
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if verbose:
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print 'done'
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return True
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def show_log(s):
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s.write("\x04")
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def boot_bit_set(s, bit, value):
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if value != 0 and value != 1:
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raise Exception("Value can only be 1 or 0.")
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if bit > 31 or bit < 0:
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raise Exception("Bit needs to be between 0 and 31.")
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go_to_prompt(s)
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s.write("boot bit set %u %u\x0d" % (bit, value))
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response = s.readline(1) # echo line
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response = s.readline(1)
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words = response.split(' ')
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if words[0] != 'OK':
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raise Exception("non-OK response for set bits: {}".format(response))
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def resource_bank_info(s, bank_num, verbose=False):
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if verbose:
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print "Getting bank locations..."
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go_to_prompt(s)
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s.write('resource bank info %d\x0d' % bank_num)
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response = s.readline(1) # echo line
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response = s.readline(1)
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words = response.split(' ')
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if words[0] != 'OK':
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raise Exception("non-OK response for bank info: {}".format(response))
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start = int(words[1])
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length = int(words[2])
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return (start, length)
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def issue_command(s, cmd):
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""" Write a command to the prompt of the SerialPortWrapper
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cmd: Command to execute with parameters, should not include a trailing newline
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"""
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s.clear()
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s.write(cmd + '\r\n')
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s.readline() # Consume the echo
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def issue_command_and_tail(s, cmd):
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issue_command(s, '!' + cmd)
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try:
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while True:
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line = s.readline().strip()
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if len(line):
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print line
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except KeyboardInterrupt:
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pass
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