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stm32/boards/LEGO_HUB_NO6/appupdate: Detect filesystem size at runtime. 

This changes appupdate.py to get the filesystem size at runtime.  This will
allow the code to be shared with LEGO_HUB_NO7 which has a similar flash
chip with a different size.

Signed-off-by: David Lechner <david@pybricks.com>
This commit is contained in:
David Lechner 2022-07-29 15:25:10 -05:00 committed by Damien George
parent 7cc6df3303
commit 9a51273d96
1 changed files with 11 additions and 2 deletions
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13
ports/stm32/boards/LEGO_HUB_NO6/appupdate.py
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@ -2,13 +2,20 @@
# MIT license; Copyright (c) 2022 Damien P. George
from micropython import const
import struct, machine, fwupdate, spiflash
import struct, machine, fwupdate, spiflash, pyb
_IOCTL_BLOCK_COUNT = const(4)
_IOCTL_BLOCK_SIZE = const(5)
_SPIFLASH_UPDATE_KEY_ADDR = const(1020 * 1024)
_SPIFLASH_UPDATE_KEY_VALUE = const(0x12345678)
_FILESYSTEM_ADDR = const(0x8000_0000 + 1024 * 1024)
_FILESYSTEM_LEN = const(31 * 1024 * 1024)
# Roundabout way to get actual filesystem size from config.
# This takes into account the 1M "reserved" section of the flash memory.
flash = pyb.Flash(start=0)
_FILESYSTEM_LEN = flash.ioctl(_IOCTL_BLOCK_COUNT, None) * flash.ioctl(_IOCTL_BLOCK_SIZE, None)
def update_app(filename):
@ -30,6 +37,8 @@ def update_app(filename):
baudrate=50_000_000,
)
cs = machine.Pin(machine.Pin.board.FLASH_NSS, machine.Pin.OUT, value=1)
# We can't use pyb.Flash() because we need to write to the "reserved" 1M area.
flash = spiflash.SPIFlash(spi, cs)
# Write the update key and elements to the SPI flash.