mirror of
https://github.com/infiniteCable2/panda.git
synced 2026-02-19 09:43:51 +08:00
18230831f3
* wip * revert that * split list + connect * some more * mypy fix * add clear status back * rename * cleanup * cleaner mypy fix --------- Co-authored-by: Comma Device <device@comma.ai>
103 lines
3.3 KiB
Python
103 lines
3.3 KiB
Python
import usb1
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import struct
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import binascii
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from typing import List, Tuple, Optional
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from .base import BaseSTBootloaderHandle
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from .usb import STBootloaderUSBHandle
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from .constants import McuType
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class PandaDFU:
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def __init__(self, dfu_serial: Optional[str]):
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# try USB, then SPI
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handle, mcu_type = PandaDFU.usb_connect(dfu_serial)
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if None in (handle, mcu_type):
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handle, mcu_type = PandaDFU.spi_connect(dfu_serial)
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if handle is None or mcu_type is None:
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raise Exception(f"failed to open DFU device {dfu_serial}")
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self._handle: BaseSTBootloaderHandle = handle
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self._mcu_type: McuType = mcu_type
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@staticmethod
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def usb_connect(dfu_serial: Optional[str]) -> Tuple[Optional[BaseSTBootloaderHandle], Optional[McuType]]:
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handle, mcu_type = None, None
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context = usb1.USBContext()
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for device in context.getDeviceList(skip_on_error=True):
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if device.getVendorID() == 0x0483 and device.getProductID() == 0xdf11:
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try:
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this_dfu_serial = device.open().getASCIIStringDescriptor(3)
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except Exception:
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continue
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if this_dfu_serial == dfu_serial or dfu_serial is None:
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handle = STBootloaderUSBHandle(device.open())
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# TODO: Find a way to detect F4 vs F2
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# TODO: also check F4 BCD, don't assume in else
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mcu_type = McuType.H7 if device.getbcdDevice() == 512 else McuType.F4
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break
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return handle, mcu_type
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@staticmethod
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def spi_connect(dfu_serial: Optional[str]) -> Tuple[Optional[BaseSTBootloaderHandle], Optional[McuType]]:
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return None, None
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@staticmethod
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def list() -> List[str]:
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ret = PandaDFU.usb_list()
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ret += PandaDFU.spi_list()
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return list(set(ret))
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@staticmethod
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def usb_list() -> List[str]:
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context = usb1.USBContext()
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dfu_serials = []
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try:
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for device in context.getDeviceList(skip_on_error=True):
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if device.getVendorID() == 0x0483 and device.getProductID() == 0xdf11:
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try:
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dfu_serials.append(device.open().getASCIIStringDescriptor(3))
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except Exception:
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pass
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except Exception:
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pass
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return dfu_serials
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@staticmethod
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def spi_list() -> List[str]:
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return []
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@staticmethod
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def st_serial_to_dfu_serial(st: str, mcu_type: McuType = McuType.F4):
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if st is None or st == "none":
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return None
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uid_base = struct.unpack("H" * 6, bytes.fromhex(st))
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if mcu_type == McuType.H7:
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return binascii.hexlify(struct.pack("!HHH", uid_base[1] + uid_base[5], uid_base[0] + uid_base[4], uid_base[3])).upper().decode("utf-8")
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else:
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return binascii.hexlify(struct.pack("!HHH", uid_base[1] + uid_base[5], uid_base[0] + uid_base[4] + 0xA, uid_base[3])).upper().decode("utf-8")
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def get_mcu_type(self) -> McuType:
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return self._mcu_type
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def erase(self, address: int) -> None:
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self._handle.erase(address)
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def reset(self):
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self._handle.jump(self._mcu_type.config.bootstub_address)
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def program_bootstub(self, code_bootstub):
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self._handle.clear_status()
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self.erase(self._mcu_type.config.bootstub_address)
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self.erase(self._mcu_type.config.app_address)
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self._handle.program(self._mcu_type.config.bootstub_address, code_bootstub, self._mcu_type.config.block_size)
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self.reset()
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def recover(self):
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with open(self._mcu_type.config.bootstub_path, "rb") as f:
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code = f.read()
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self.program_bootstub(code)
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