Flash Size and Application Offset Configuration

the flash size and application offset can be configured using the upload.maximum_size and upload.offset_address options.

Option	Default	Description
`upload.maximum_size`	`262144`	the size of the flash
`upload.offset_address`	`0`	application start offset address

Setting the Flash size and Application offset

platformio.ini:

[env:myenv]
# ...
board_upload.maximum_size = 262144
board_upload.offset_address = 0xC000