Question about Assertion 'VERIFY_PTR(ptr)' failed, at file ../../py/gc.c:882

[jandriea]

Hello everyone,

I am using the Nucleo-L476RG in micropython v1.19.1 board and want to add an SPI Flash device. I am aware that I can change the NUCLEO-L476RG port and add the SPI block device using the example from ADAFRUIT_F405_EXPRESS board. However, I want to use the release version of the micropython firmware and add everything on top of it.

I've already created the SPIBlockDevice implementation in mpy and I am able to run the os.VfsFat.mkfs command using the module.

However, the os.mount command is always failed and shows this error message

>>> os.mount(bdev, '/data')
readblocks(self, block_num=0, len(buf)=44, offset=8)
_readblock(self, block_num=0, len(buf)=512)
_readbytes(self, addr=0, len(buf)=512)
_await(self)
Assertion 'VERIFY_PTR(ptr)' failed, at file ../../py/gc.c:882

FATAL ERROR:

I am not quite sure what is the real reason for this error and it is quite hard to debug it.

Can anyone give me some help with this issue?
Thanks in advance

This is my SPIBlockDev implementation

CMD_READ = 0x03
CMD_WRITE = 0x02
CMD_RDSR = 0x05
CMD_WREN = 0x06
CMD_SE = 0x20
CMD_BE32K = 0x52
CMD_BE64K = 0xD8
CMD_CE = 0x60

SECTOR_SIZE = 4096
PAGE_SIZE = 256
SECTOR_ADDR_MASK = 0xFFF

CACHE_SIZE = 8 # Max 8 sector in the cache (32KB)

class SPIBlockDev:
    def __init__(self, spi, cs, block_size, num_blocks):
        print(f"__init__(self, {spi=}, {cs=}, {block_size=}, {num_blocks=})")
        self._spi = spi
        self._cs = cs
        self._block_size = block_size
        self._num_blocks = num_blocks
        self._cache = dict() # [sector_num: data]
        self._tmp = bytearray(SECTOR_SIZE)

    def ioctl(self, op, arg):
        print(f"ioctl(self, {op=}, {arg=})")
        if op == 1:  # init
            return 0
        if op == 3:  # sync
            return self._sync()
        if op == 4:  # block count
            return self._num_blocks
        if op == 5:  # block size
            return self._block_size
        if op == 6:  # block erase
            return self._eraseblock(arg)

    def readblocks(self, block_num, buf, offset=0):
        print(f"readblocks(self, {block_num=}, {len(buf)=}, {offset=})")
        buflen = len(buf)
        if buflen == self._block_size:
            self._readblock(block_num, buf)
            return
        start = 0
        self._tmp = bytearray(self._block_size)
        while buflen - start > 0:
            self._readblock(block_num, self._tmp)
            buf[start: start + self._block_size] = bytearray(self._tmp)
            start += self._block_size
            block_num += 1

    def writeblocks(self, block_num, buf, offset=None):
        print(f"writeblocks(self, {block_num=}, {len(buf)=}, {offset=})")
        buflen = len(buf)
        start = 0
        while buflen - start > 0:
            self._writeblock(block_num, buf[start: start + self._block_size])
            start += self._block_size
            block_num += 1

    def _sendcmd(self, cmd, add_data=None):
        print(f"_sendcmd(self, {cmd=}, {add_data=})")
        self._cs.off()
        self._spi.send(cmd)
        if add_data is not None:
            self._spi.send(add_data)
        self._cs.on()
    
    def _readbytes(self, addr, buf):
        print(f"_readbytes(self, {addr=}, {len(buf)=})")
        self._await()

        cmd = bytearray(4)
        cmd[0] = CMD_READ
        cmd[1] = (addr >> 16) & 0xFF
        cmd[2] = (addr >> 8) & 0xFF
        cmd[3] = (addr >> 0) & 0xFF

        self._cs.off()
        self._spi.send(cmd)
        self._spi.recv(buf)
        self._cs.on()

    def _writeenable(self):
        print(f"_writeenable(self)")
        self._sendcmd(CMD_WREN)

        # Check the WEL bit
        buf = bytearray(1)

        self._cs.off()
        self._spi.send(CMD_RDSR)
        busy = True
        while busy:
            self._spi.recv(buf)
            # WEL is bit 1
            busy = buf[0] & 0x02 == 0
        self._cs.on()

    def _writepage(self, addr, buf):
        print(f"_writepage(self, {addr=}, {len(buf)=})")
        # Send the write enable command
        self._writeenable()

        cmd = bytearray(4)
        cmd[0] = CMD_WRITE
        cmd[1] = (addr >> 16) & 0xFF
        cmd[2] = (addr >> 8) & 0xFF
        cmd[3] = (addr >> 0) & 0xFF

        if len(buf) < PAGE_SIZE:
            buf += '\xff' * (PAGE_SIZE - len(buf))

        self._cs.off()
        self._spi.send(cmd)
        self._spi.send(buf)
        self._cs.on()
        # Wait until finished
        self._await()

    def _writesector(self, sector_num, buf):
        print(f"_writesector(self, {sector_num=}, {len(buf)=})")
        # erase before write
        self._erasesector(sector_num)
        addr = (sector_num & SECTOR_ADDR_MASK) << 12
        # write using page program command
        for i in range(0, len(buf), PAGE_SIZE):
            self._writepage(addr + i, buf[i:i+PAGE_SIZE])
        # Wait until finished
        self._await()

    def _erasesector(self, sector_num):
        print(f"_erasesector(self, {sector_num=})")
        # Send the write enable command
        self._writeenable()

        long_addr = (sector_num & SECTOR_ADDR_MASK) << 12
        addr = bytearray(3)
        addr[0] = (long_addr >> 16) & 0xFF
        addr[1] = (long_addr >> 8) & 0xFF
        addr[2] = (long_addr >> 0) & 0xFF

        self._sendcmd(CMD_SE, addr)
        # Wait until finished
        self._await()

    def _readblock(self, block_num, buf):
        print(f"_readblock(self, {block_num=}, {len(buf)=})")
        # Set the starting sector
        if (self._block_size > SECTOR_SIZE):
            # not implemented yet
            ...
        else:
            div = SECTOR_SIZE // self._block_size
            sector = block_num // div
            # check cache
            if sector in self._cache:
                # get index
                idx = (block_num % div) * self._block_size
                # set data
                buf = bytearray(self._cache[sector][idx:idx + self._block_size])
            else:
                # read from the device
                self._readbytes(block_num * self._block_size, buf)

    def _writeblock(self, block_num, buf):
        print(f"_writeblock(self, {block_num=}, {len(buf)=})")
        # Set the starting sector
        if (self._block_size > SECTOR_SIZE):
            # not implemented yet
            ...
        else:
            div = SECTOR_SIZE // self._block_size
            sector = block_num // div
            idx = (block_num % div) * self._block_size
            if sector in self._cache:
                self._cache[sector][idx: idx+self._block_size] = bytearray(buf)
                return
            # check cache size before creating a new one
            if len(self._cache) >= CACHE_SIZE:
                self._sync()
            # read sector from device
            self._tmp = bytearray(SECTOR_SIZE)
            self._readbytes((sector & SECTOR_ADDR_MASK) << 12, self._tmp)
            # update cache
            self._tmp[idx:idx + self._block_size] = bytearray(buf)
            self._cache[sector] = bytearray(self._tmp)

    def _eraseblock(self, block_num):
        print(f"_eraseblock(self, {block_num=})")
        self._writeblock(block_num, bytearray(b"\xff" * self._block_size))

    def _erasechip(self):
        print(f"_erasechip(self)")
        self._writeenable()
        self._sendcmd(CMD_CE)
        self._await()

    def _await(self):
        print(f"_await(self)")
        buf = bytearray(1)
        self._cs.off()
        self._spi.send(CMD_RDSR)
        busy = True
        while busy:
            self._spi.recv(buf)
            # WIP is bit 0
            busy = buf[0] & 0x01 == 1
        self._cs.on()

    def _sync(self):
        print(f"_sync(self)")
        # Write all cache
        for sector in self._cache:
            self._writesector(sector, self._cache[sector])
        # Clean up afterward
        del self._cache
        self._cache = dict()

And this is my console output

>>> import os, pyb
>>> from spibdev import SPIBlockDev
>>> nss = pyb.Pin("PA4", pyb.Pin.OUT)
>>> spi = pyb.SPI(1, pyb.SPI.MASTER, baudrate=20000000, polarity=0, phase=0, bits=8, firstbit=pyb.SPI.MSB)
>>> bdev = SPIBlockDev(spi, nss, 512, 32768)
__init__(self, spi=SPI(1, SPI.CONTROLLER, baudrate=20000000, prescaler=4, polarity=0, phase=0, bits=8), cs=Pin(Pin.cpu.A4, mode=Pin.OUT), block_size=512, num_blocks=32768)
>>> os.VfsFat.mkfs(bdev)
ioctl(self, op=1, arg=0)
readblocks(self, block_num=0, len(buf)=512, offset=0)
_readblock(self, block_num=0, len(buf)=512)
_readbytes(self, addr=0, len(buf)=512)
_await(self)
ioctl(self, op=1, arg=0)
ioctl(self, op=4, arg=0)
writeblocks(self, block_num=0, len(buf)=512, offset=None)
_writeblock(self, block_num=0, len(buf)=512)
_readbytes(self, addr=0, len(buf)=4096)
_await(self)
writeblocks(self, block_num=1, len(buf)=512, offset=None)
_writeblock(self, block_num=1, len(buf)=512)
writeblocks(self, block_num=2, len(buf)=512, offset=None)
_writeblock(self, block_num=2, len(buf)=512)
writeblocks(self, block_num=3, len(buf)=512, offset=None)
_writeblock(self, block_num=3, len(buf)=512)
writeblocks(self, block_num=4, len(buf)=512, offset=None)
_writeblock(self, block_num=4, len(buf)=512)
writeblocks(self, block_num=5, len(buf)=512, offset=None)
_writeblock(self, block_num=5, len(buf)=512)
writeblocks(self, block_num=6, len(buf)=512, offset=None)
_writeblock(self, block_num=6, len(buf)=512)
writeblocks(self, block_num=7, len(buf)=512, offset=None)
_writeblock(self, block_num=7, len(buf)=512)
writeblocks(self, block_num=8, len(buf)=512, offset=None)
_writeblock(self, block_num=8, len(buf)=512)
_readbytes(self, addr=4096, len(buf)=4096)
_await(self)
writeblocks(self, block_num=9, len(buf)=512, offset=None)
_writeblock(self, block_num=9, len(buf)=512)
writeblocks(self, block_num=10, len(buf)=512, offset=None)
_writeblock(self, block_num=10, len(buf)=512)
writeblocks(self, block_num=11, len(buf)=512, offset=None)
_writeblock(self, block_num=11, len(buf)=512)
writeblocks(self, block_num=12, len(buf)=512, offset=None)
_writeblock(self, block_num=12, len(buf)=512)
writeblocks(self, block_num=13, len(buf)=512, offset=None)
_writeblock(self, block_num=13, len(buf)=512)
writeblocks(self, block_num=14, len(buf)=512, offset=None)
_writeblock(self, block_num=14, len(buf)=512)
writeblocks(self, block_num=15, len(buf)=512, offset=None)
_writeblock(self, block_num=15, len(buf)=512)
writeblocks(self, block_num=16, len(buf)=512, offset=None)
_writeblock(self, block_num=16, len(buf)=512)
_readbytes(self, addr=8192, len(buf)=4096)
_await(self)
writeblocks(self, block_num=17, len(buf)=512, offset=None)
_writeblock(self, block_num=17, len(buf)=512)
writeblocks(self, block_num=18, len(buf)=512, offset=None)
_writeblock(self, block_num=18, len(buf)=512)
writeblocks(self, block_num=19, len(buf)=512, offset=None)
_writeblock(self, block_num=19, len(buf)=512)
writeblocks(self, block_num=20, len(buf)=512, offset=None)
_writeblock(self, block_num=20, len(buf)=512)
writeblocks(self, block_num=21, len(buf)=512, offset=None)
_writeblock(self, block_num=21, len(buf)=512)
writeblocks(self, block_num=22, len(buf)=512, offset=None)
_writeblock(self, block_num=22, len(buf)=512)
writeblocks(self, block_num=23, len(buf)=512, offset=None)
_writeblock(self, block_num=23, len(buf)=512)
writeblocks(self, block_num=24, len(buf)=512, offset=None)
_writeblock(self, block_num=24, len(buf)=512)
_readbytes(self, addr=12288, len(buf)=4096)
_await(self)
writeblocks(self, block_num=25, len(buf)=512, offset=None)
_writeblock(self, block_num=25, len(buf)=512)
writeblocks(self, block_num=26, len(buf)=512, offset=None)
_writeblock(self, block_num=26, len(buf)=512)
writeblocks(self, block_num=27, len(buf)=512, offset=None)
_writeblock(self, block_num=27, len(buf)=512)
writeblocks(self, block_num=28, len(buf)=512, offset=None)
_writeblock(self, block_num=28, len(buf)=512)
writeblocks(self, block_num=29, len(buf)=512, offset=None)
_writeblock(self, block_num=29, len(buf)=512)
writeblocks(self, block_num=30, len(buf)=512, offset=None)
_writeblock(self, block_num=30, len(buf)=512)
writeblocks(self, block_num=31, len(buf)=512, offset=None)
_writeblock(self, block_num=31, len(buf)=512)
writeblocks(self, block_num=32, len(buf)=512, offset=None)
_writeblock(self, block_num=32, len(buf)=512)
_readbytes(self, addr=16384, len(buf)=4096)
_await(self)
writeblocks(self, block_num=33, len(buf)=512, offset=None)
_writeblock(self, block_num=33, len(buf)=512)
writeblocks(self, block_num=34, len(buf)=512, offset=None)
_writeblock(self, block_num=34, len(buf)=512)
writeblocks(self, block_num=35, len(buf)=512, offset=None)
_writeblock(self, block_num=35, len(buf)=512)
writeblocks(self, block_num=36, len(buf)=512, offset=None)
_writeblock(self, block_num=36, len(buf)=512)
writeblocks(self, block_num=37, len(buf)=512, offset=None)
_writeblock(self, block_num=37, len(buf)=512)
writeblocks(self, block_num=38, len(buf)=512, offset=None)
_writeblock(self, block_num=38, len(buf)=512)
writeblocks(self, block_num=39, len(buf)=512, offset=None)
_writeblock(self, block_num=39, len(buf)=512)
writeblocks(self, block_num=40, len(buf)=512, offset=None)
_writeblock(self, block_num=40, len(buf)=512)
_readbytes(self, addr=20480, len(buf)=4096)
_await(self)
writeblocks(self, block_num=41, len(buf)=512, offset=None)
_writeblock(self, block_num=41, len(buf)=512)
writeblocks(self, block_num=42, len(buf)=512, offset=None)
_writeblock(self, block_num=42, len(buf)=512)
writeblocks(self, block_num=43, len(buf)=512, offset=None)
_writeblock(self, block_num=43, len(buf)=512)
writeblocks(self, block_num=44, len(buf)=512, offset=None)
_writeblock(self, block_num=44, len(buf)=512)
writeblocks(self, block_num=45, len(buf)=512, offset=None)
_writeblock(self, block_num=45, len(buf)=512)
writeblocks(self, block_num=46, len(buf)=512, offset=None)
_writeblock(self, block_num=46, len(buf)=512)
writeblocks(self, block_num=47, len(buf)=512, offset=None)
_writeblock(self, block_num=47, len(buf)=512)
writeblocks(self, block_num=48, len(buf)=512, offset=None)
_writeblock(self, block_num=48, len(buf)=512)
_readbytes(self, addr=24576, len(buf)=4096)
_await(self)
writeblocks(self, block_num=49, len(buf)=512, offset=None)
_writeblock(self, block_num=49, len(buf)=512)
writeblocks(self, block_num=50, len(buf)=512, offset=None)
_writeblock(self, block_num=50, len(buf)=512)
writeblocks(self, block_num=51, len(buf)=512, offset=None)
_writeblock(self, block_num=51, len(buf)=512)
writeblocks(self, block_num=52, len(buf)=512, offset=None)
_writeblock(self, block_num=52, len(buf)=512)
writeblocks(self, block_num=53, len(buf)=512, offset=None)
_writeblock(self, block_num=53, len(buf)=512)
writeblocks(self, block_num=54, len(buf)=512, offset=None)
_writeblock(self, block_num=54, len(buf)=512)
writeblocks(self, block_num=55, len(buf)=512, offset=None)
_writeblock(self, block_num=55, len(buf)=512)
writeblocks(self, block_num=56, len(buf)=512, offset=None)
_writeblock(self, block_num=56, len(buf)=512)
_readbytes(self, addr=28672, len(buf)=4096)
_await(self)
writeblocks(self, block_num=57, len(buf)=512, offset=None)
_writeblock(self, block_num=57, len(buf)=512)
writeblocks(self, block_num=58, len(buf)=512, offset=None)
_writeblock(self, block_num=58, len(buf)=512)
writeblocks(self, block_num=59, len(buf)=512, offset=None)
_writeblock(self, block_num=59, len(buf)=512)
writeblocks(self, block_num=60, len(buf)=512, offset=None)
_writeblock(self, block_num=60, len(buf)=512)
writeblocks(self, block_num=61, len(buf)=512, offset=None)
_writeblock(self, block_num=61, len(buf)=512)
writeblocks(self, block_num=62, len(buf)=512, offset=None)
_writeblock(self, block_num=62, len(buf)=512)
writeblocks(self, block_num=63, len(buf)=512, offset=None)
_writeblock(self, block_num=63, len(buf)=512)
writeblocks(self, block_num=64, len(buf)=512, offset=None)
_writeblock(self, block_num=64, len(buf)=512)
_sync(self)
_writesector(self, sector_num=0, len(buf)=4096)
_erasesector(self, sector_num=0)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x00\x00\x00'))
_await(self)
_writepage(self, addr=0, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=256, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=512, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=768, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=1024, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=1280, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=1536, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=1792, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=2048, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=2304, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=2560, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=2816, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=3072, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=3328, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=3584, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=3840, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
_writesector(self, sector_num=1, len(buf)=4096)
_erasesector(self, sector_num=1)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x00\x10\x00'))
_await(self)
_writepage(self, addr=4096, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=4352, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=4608, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=4864, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=5120, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=5376, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=5632, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=5888, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=6144, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=6400, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=6656, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=6912, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=7168, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=7424, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=7680, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=7936, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
_writesector(self, sector_num=2, len(buf)=4096)
_erasesector(self, sector_num=2)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x00 \x00'))
_await(self)
_writepage(self, addr=8192, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=8448, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=8704, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=8960, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=9216, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=9472, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=9728, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=9984, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=10240, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=10496, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=10752, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=11008, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=11264, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=11520, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=11776, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=12032, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
_writesector(self, sector_num=3, len(buf)=4096)
_erasesector(self, sector_num=3)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x000\x00'))
_await(self)
_writepage(self, addr=12288, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=12544, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=12800, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=13056, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=13312, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=13568, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=13824, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=14080, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=14336, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=14592, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=14848, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=15104, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=15360, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=15616, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=15872, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=16128, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
_writesector(self, sector_num=4, len(buf)=4096)
_erasesector(self, sector_num=4)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x00@\x00'))
_await(self)
_writepage(self, addr=16384, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=16640, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=16896, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=17152, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=17408, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=17664, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=17920, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=18176, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=18432, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=18688, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=18944, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=19200, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=19456, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=19712, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=19968, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=20224, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
_writesector(self, sector_num=5, len(buf)=4096)
_erasesector(self, sector_num=5)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x00P\x00'))
_await(self)
_writepage(self, addr=20480, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=20736, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=20992, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=21248, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=21504, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=21760, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=22016, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=22272, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=22528, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=22784, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=23040, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=23296, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=23552, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=23808, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=24064, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=24320, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
_writesector(self, sector_num=6, len(buf)=4096)
_erasesector(self, sector_num=6)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x00`\x00'))
_await(self)
_writepage(self, addr=24576, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=24832, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=25088, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=25344, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=25600, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=25856, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=26112, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=26368, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=26624, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=26880, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=27136, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=27392, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=27648, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=27904, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=28160, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=28416, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
_writesector(self, sector_num=7, len(buf)=4096)
_erasesector(self, sector_num=7)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x00p\x00'))
_await(self)
_writepage(self, addr=28672, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=28928, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=29184, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=29440, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=29696, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=29952, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=30208, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=30464, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=30720, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=30976, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=31232, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=31488, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=31744, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=32000, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=32256, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=32512, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
_readbytes(self, addr=32768, len(buf)=4096)
_await(self)
writeblocks(self, block_num=65, len(buf)=512, offset=None)
_writeblock(self, block_num=65, len(buf)=512)
ioctl(self, op=3, arg=0)
_sync(self)
_writesector(self, sector_num=8, len(buf)=4096)
_erasesector(self, sector_num=8)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_sendcmd(self, cmd=32, add_data=bytearray(b'\x00\x80\x00'))
_await(self)
_writepage(self, addr=32768, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=33024, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=33280, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=33536, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=33792, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=34048, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=34304, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=34560, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=34816, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=35072, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=35328, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=35584, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=35840, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=36096, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=36352, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_writepage(self, addr=36608, len(buf)=256)
_writeenable(self)
_sendcmd(self, cmd=6, add_data=None)
_await(self)
_await(self)
>>> os.mount(bdev, '/data')
readblocks(self, block_num=0, len(buf)=44, offset=8)
_readblock(self, block_num=0, len(buf)=512)
_readbytes(self, addr=0, len(buf)=512)
_await(self)
Assertion 'VERIFY_PTR(ptr)' failed, at file ../../py/gc.c:882

FATAL ERROR:

[jandriea]

I found out that removing the offset argument from the readblocks and writeblocks methods resolve this issue and I can finally mount the flash device.