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https://git.yoctoproject.org/meta-zephyr
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15c5eea4ca
By default, pyocd uses generic target type called "cortex_m" which should be able to connect and debug but not flash the memory. Normally pyocd would warn us of using default target instead of proper one but this message wasn't displayed. Despite not providing target type, flashing process succeeded but results were undefined. On Nitrogen, sometimes it worked (especially for small images) and sometimes the programmed device crashed miserably. Fix flashing operation by providing pyocd target type acquired from the conditional PYOCD_TARGET variable declared for each machine (chip family). Signed-off-by: Zbigniew Bodek <zbigniew.bodek@huawei.com> Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
65 lines
2.6 KiB
Plaintext
65 lines
2.6 KiB
Plaintext
PYOCD_CONNECT_TIMEOUT_SECONDS ?= "30"
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PYOCD_FLASH_IDS ?= "all"
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python do_flash_usb() {
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try:
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from pyocd.core.helpers import ConnectHelper
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from pyocd.flash.file_programmer import FileProgrammer
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except ImportError:
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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.")
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try:
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timeout = int(d.getVar('PYOCD_CONNECT_TIMEOUT_SECONDS'))
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except ValueError:
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bb.fatal(f"PYOCD_CONNECT_TIMEOUT_SECONDS was set to an invalid value: {d.getVar('PYOCD_CONNECT_TIMEOUT_SECONDS')}.")
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image = f"{d.getVar('DEPLOY_DIR_IMAGE')}/{d.getVar('PN')}.elf"
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ids = d.getVar('PYOCD_FLASH_IDS')
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# Compute the list of IDs to program
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if ids == 'all':
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ids = []
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for probe in ConnectHelper.get_all_connected_probes(blocking=False):
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ids.append(probe.unique_id)
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if not ids:
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bb.fatal("No probe detected. Make sure your target is connected.")
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else:
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ids = ids.split()
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if not ids:
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bb.fatal("No probe requested for programming. Make sure PYOCD_FLASH_IDS is set.")
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# Fetch target type to pass to the ConnectHelper
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target = d.getVar('PYOCD_TARGET')
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# Program each ID
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for id in ids:
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bb.plain(f"Attempting to flash {os.path.basename(image)} to board {d.getVar('BOARD')} [{id}]")
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# Try to connect to a probe with a timeout
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now = 0
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step = 3
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while True:
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if target is not None:
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session = ConnectHelper.session_with_chosen_probe(blocking=False, return_first=True, unique_id=id, target_override=target)
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else:
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bb.warn(f"Target type not provided. Flashing may fail or result in an undefined behavior.")
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session = ConnectHelper.session_with_chosen_probe(blocking=False, return_first=True, unique_id=id)
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if session:
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break
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if now >= timeout:
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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.")
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bb.warn(f"Can't connect to the probe ID: {id}. Retrying in {step} seconds...")
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time.sleep(step)
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now += step
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# Program the selected probe
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with session:
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FileProgrammer(session).program(image)
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session.board.target.reset()
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}
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addtask do_flash_usb after do_deploy
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do_flash_usb[nostamp] = "1"
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do_flash_usb[vardepsexclude] = "BB_ORIGENV"
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