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PYOCD_CONNECT_TIMEOUT_SECONDS ?= "30"
PYOCD_FLASH_IDS ?= "all"
python do_flash_usb() {
try:
from pyocd.core.helpers import ConnectHelper
from pyocd.flash.file_programmer import FileProgrammer
except ImportError:
bb.fatal("Flashing with pyocd needs the relevant python package. Make sure your host provides it or consult your distribution packages for how to install this prerequisite.")
try:
timeout = int(d.getVar('PYOCD_CONNECT_TIMEOUT_SECONDS'))
except ValueError:
bb.fatal(f"PYOCD_CONNECT_TIMEOUT_SECONDS was set to an invalid value: {d.getVar('PYOCD_CONNECT_TIMEOUT_SECONDS')}.")
image = f"{d.getVar('DEPLOY_DIR_IMAGE')}/{d.getVar('PN')}.elf"
ids = d.getVar('PYOCD_FLASH_IDS')
# Compute the list of IDs to program
if ids == 'all':
ids = []
for probe in ConnectHelper.get_all_connected_probes(blocking=False):
ids.append(probe.unique_id)
if not ids:
bb.fatal("No probe detected. Make sure your target is connected.")
else:
ids = ids.split()
if not ids:
bb.fatal("No probe requested for programming. Make sure PYOCD_FLASH_IDS is set.")
# Fetch target type to pass to the ConnectHelper
target = d.getVar('PYOCD_TARGET')
# Program each ID
for id in ids:
bb.plain(f"Attempting to flash {os.path.basename(image)} to board {d.getVar('BOARD')} [{id}]")
# Try to connect to a probe with a timeout
now = 0
step = 3
while True:
if target is not None:
session = ConnectHelper.session_with_chosen_probe(blocking=False, return_first=True, unique_id=id, target_override=target)
else:
bb.warn(f"Target type not provided. Flashing may fail or result in an undefined behavior.")
session = ConnectHelper.session_with_chosen_probe(blocking=False, return_first=True, unique_id=id)
if session:
break
if now >= timeout:
bb.fatal(f"Timeout while trying to connect to probe ID: {id}. Make sure the target device is connected and the udev is configured accordingly. See <https://github.com/mbedmicro/pyOCD/tree/master/udev> for help.")
bb.warn(f"Can't connect to the probe ID: {id}. Retrying in {step} seconds...")
time.sleep(step)
now += step
# Program the selected probe
with session:
FileProgrammer(session).program(image)
session.board.target.reset()
}
addtask do_flash_usb after do_deploy
do_flash_usb[nostamp] = "1"
do_flash_usb[vardepsexclude] = "BB_ORIGENV"
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