esp8266: Add Python modules for initial configuration.
Main entry point is _boot.py which checks whether FAT FS in flash mountable,
and if so, mounts it. Otherwise, it checks if flash is empty, and if so,
performs initial module setup: makes FAT FS, configures default AP name,
etc. As a last option, if flash is not empty, and could not be mounted,
it means filesystem corruption, and warning message with instructions is
printed in an infinite loop.
2016-04-11 21:37:04 +00:00
|
|
|
import esp
|
|
|
|
|
|
|
|
|
|
class FlashBdev:
|
|
|
|
|
|
|
|
|
|
SEC_SIZE = 4096
|
2016-04-17 22:23:04 +00:00
|
|
|
START_SEC = 0x89000 // SEC_SIZE
|
|
|
|
|
NUM_BLK = 0x73
|
esp8266: Add Python modules for initial configuration.
Main entry point is _boot.py which checks whether FAT FS in flash mountable,
and if so, mounts it. Otherwise, it checks if flash is empty, and if so,
performs initial module setup: makes FAT FS, configures default AP name,
etc. As a last option, if flash is not empty, and could not be mounted,
it means filesystem corruption, and warning message with instructions is
printed in an infinite loop.
2016-04-11 21:37:04 +00:00
|
|
|
|
|
|
|
|
def __init__(self, blocks=NUM_BLK):
|
|
|
|
|
self.blocks = blocks
|
|
|
|
|
|
|
|
|
|
def readblocks(self, n, buf):
|
|
|
|
|
print("readblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
|
|
|
|
|
esp.flash_read((n + self.START_SEC) * self.SEC_SIZE, buf)
|
|
|
|
|
|
|
|
|
|
def writeblocks(self, n, buf):
|
|
|
|
|
print("writeblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
|
|
|
|
|
assert len(buf) <= self.SEC_SIZE, len(buf)
|
|
|
|
|
esp.flash_erase(n + self.START_SEC)
|
|
|
|
|
esp.flash_write((n + self.START_SEC) * self.SEC_SIZE, buf)
|
|
|
|
|
|
|
|
|
|
def ioctl(self, op, arg):
|
|
|
|
|
print("ioctl(%d, %r)" % (op, arg))
|
|
|
|
|
if op == 4: # BP_IOCTL_SEC_COUNT
|
|
|
|
|
return self.blocks
|
|
|
|
|
if op == 5: # BP_IOCTL_SEC_SIZE
|
|
|
|
|
return self.SEC_SIZE
|
|
|
|
|
|
|
|
|
|
bdev = FlashBdev()
|
