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import shutil
import time
import os
import signal
import usb.core
from qmk.constants import BOOTLOADER_VIDS_PIDS
from milc import cli
# yapf: disable
_PID_TO_MCU = {
'2fef': 'atmega16u2',
'2ff0': 'atmega32u2',
'2ff3': 'atmega16u4',
'2ff4': 'atmega32u4',
'2ff9': 'at90usb64',
'2ffa': 'at90usb162',
'2ffb': 'at90usb128'
}
AVRDUDE_MCU = {
'atmega32a': 'm32',
'atmega328p': 'm328p',
'atmega328': 'm328',
}
# yapf: enable
class DelayedKeyboardInterrupt:
# Custom interrupt handler to delay the processing of Ctrl-C
# https://stackoverflow.com/a/21919644
def __enter__(self):
self.signal_received = False
self.old_handler = signal.signal(signal.SIGINT, self.handler)
def handler(self, sig, frame):
self.signal_received = (sig, frame)
def __exit__(self, type, value, traceback):
signal.signal(signal.SIGINT, self.old_handler)
if self.signal_received:
self.old_handler(*self.signal_received)
# TODO: Make this more generic, so cli/doctor/check.py and flashers.py can share the code
def _check_dfu_programmer_version():
# Return True if version is higher than 0.7.0: supports '--force'
check = cli.run(['dfu-programmer', '--version'], combined_output=True, timeout=5)
first_line = check.stdout.split('\n')[0]
version_number = first_line.split()[1]
maj, min_, bug = version_number.split('.')
if int(maj) >= 0 and int(min_) >= 7:
return True
else:
return False
def _find_bootloader():
# To avoid running forever in the background, only look for bootloaders for 10min
start_time = time.time()
while time.time() - start_time < 600:
for bl in BOOTLOADER_VIDS_PIDS:
for vid, pid in BOOTLOADER_VIDS_PIDS[bl]:
vid_hex = int(f'0x{vid}', 0)
pid_hex = int(f'0x{pid}', 0)
with DelayedKeyboardInterrupt():
# PyUSB does not like to be interrupted by Ctrl-C
# therefore we catch the interrupt with a custom handler
# and only process it once pyusb finished
dev = usb.core.find(idVendor=vid_hex, idProduct=pid_hex)
if dev:
if bl == 'atmel-dfu':
details = _PID_TO_MCU[pid]
elif bl == 'caterina':
details = (vid_hex, pid_hex)
elif bl == 'hid-bootloader':
if vid == '16c0' and pid == '0478':
details = 'halfkay'
else:
details = 'qmk-hid'
elif bl == 'stm32-dfu' or bl == 'apm32-dfu' or bl == 'gd32v-dfu' or bl == 'kiibohd':
details = (vid, pid)
else:
details = None
return (bl, details)
time.sleep(0.1)
return (None, None)
def _find_serial_port(vid, pid):
if 'windows' in cli.platform.lower():
from serial.tools.list_ports_windows import comports
platform = 'windows'
else:
from serial.tools.list_ports_posix import comports
platform = 'posix'
start_time = time.time()
# Caterina times out after 8 seconds
while time.time() - start_time < 8:
for port in comports():
port, desc, hwid = port
if f'{vid:04x}:{pid:04x}' in hwid.casefold():
if platform == 'windows':
time.sleep(1)
return port
else:
start_time = time.time()
# Wait until the port becomes writable before returning
while time.time() - start_time < 8:
if os.access(port, os.W_OK):
return port
else:
time.sleep(0.5)
return None
return None
def _flash_caterina(details, file):
port = _find_serial_port(details[0], details[1])
if port:
cli.run(['avrdude', '-p', 'atmega32u4', '-c', 'avr109', '-U', f'flash:w:{file}:i', '-P', port], capture_output=False)
return False
else:
return True
def _flash_atmel_dfu(mcu, file):
force = '--force' if _check_dfu_programmer_version() else ''
cli.run(['dfu-programmer', mcu, 'erase', force], capture_output=False)
cli.run(['dfu-programmer', mcu, 'flash', force, file], capture_output=False)
cli.run(['dfu-programmer', mcu, 'reset'], capture_output=False)
def _flash_hid_bootloader(mcu, details, file):
if details == 'halfkay':
if shutil.which('teensy-loader-cli'):
cmd = 'teensy-loader-cli'
elif shutil.which('teensy_loader_cli'):
cmd = 'teensy_loader_cli'
# Use 'hid_bootloader_cli' for QMK HID and as a fallback for HalfKay
if not cmd:
if shutil.which('hid_bootloader_cli'):
cmd = 'hid_bootloader_cli'
else:
return True
cli.run([cmd, f'-mmcu={mcu}', '-w', '-v', file], capture_output=False)
def _flash_dfu_util(details, file):
# STM32duino
if details[0] == '1eaf' and details[1] == '0003':
cli.run(['dfu-util', '-a', '2', '-d', f'{details[0]}:{details[1]}', '-R', '-D', file], capture_output=False)
# kiibohd
elif details[0] == '1c11' and details[1] == 'b007':
cli.run(['dfu-util', '-a', '0', '-d', f'{details[0]}:{details[1]}', '-D', file], capture_output=False)
# STM32, APM32, or GD32V DFU
else:
cli.run(['dfu-util', '-a', '0', '-d', f'{details[0]}:{details[1]}', '-s', '0x08000000:leave', '-D', file], capture_output=False)
def _flash_isp(mcu, programmer, file):
programmer = 'usbasp' if programmer == 'usbasploader' else 'usbtiny'
# Check if the provide mcu has an avrdude-specific name, otherwise pass on what the user provided
mcu = AVRDUDE_MCU.get(mcu, mcu)
cli.run(['avrdude', '-p', mcu, '-c', programmer, '-U', f'flash:w:{file}:i'], capture_output=False)
def _flash_mdloader(file):
cli.run(['mdloader', '--first', '--download', file, '--restart'], capture_output=False)
def flasher(mcu, file):
bl, details = _find_bootloader()
# Add a small sleep to avoid race conditions
time.sleep(1)
if bl == 'atmel-dfu':
_flash_atmel_dfu(details, file.name)
elif bl == 'caterina':
if _flash_caterina(details, file.name):
return (True, "The Caterina bootloader was found but is not writable. Check 'qmk doctor' output for advice.")
elif bl == 'hid-bootloader':
if mcu:
if _flash_hid_bootloader(mcu, details, file.name):
return (True, "Please make sure 'teensy_loader_cli' or 'hid_bootloader_cli' is available on your system.")
else:
return (True, "Specifying the MCU with '-m' is necessary for HalfKay/HID bootloaders!")
elif bl == 'stm32-dfu' or bl == 'apm32-dfu' or bl == 'gd32v-dfu' or bl == 'kiibohd':
_flash_dfu_util(details, file.name)
elif bl == 'usbasploader' or bl == 'usbtinyisp':
if mcu:
_flash_isp(mcu, bl, file.name)
else:
return (True, "Specifying the MCU with '-m' is necessary for ISP flashing!")
elif bl == 'md-boot':
_flash_mdloader(file.name)
else:
return (True, "Known bootloader found but flashing not currently supported!")
return (False, None)
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