Bootloader offering 'time' based selection on boot.

[Ttelmah]

Alternative bootloader.

This is a modified version of bootloader, to give a time based selection,
rather than needing a button.
Posted by 'pgvt' from the forum here.

[url]
https://gitlab.com/vitapg/flash-tool
[/url]

[pgvt]

Added a --term (terminal mode flag to the flasher for convenience)

If you are using newer PIC18 chips w/ PPS module, note that software reset command when going "between" bootloader and application or vice-versa does not un-map your HW associated pins by #pin_select including UART ones.

Also note that the fuses are only taken from your bootloader code so you can review carefully for example

#FUSES RSTOSC_HFINTRC_64MHZ // Internal clock
#FUSES WDT_SW // Use SW by wdt_setup() or NOWDT
#FUSES NOMCLR // MCLR to Vcc internally
#FUSES PUT_64MS // Power_up Timer
#FUSES PROTECT // Code and EEPROM protect from reading
// Confirm protected size >= to LOADER_END 0x7FF "bootloader.h"
#FUSES BBSIZ1K // Boot sector size 1K = 0 to 7FF,
#FUSES BOOTBLOCK // Boot sector enable - to not erase itself
#FUSES WRTB // Boot sector write protected
#FUSES NOPPS1WAY // Allow PPS multiple lock-unlock pins

And all other stuff - I/O pins, periphery - they may be dependent between bootloader and the application (bootloader is not so generic)