Compiling an app to download via the bootloader

There are two main approaches to compiling an app to download via this bootloader.

the GUI approach (Microchip MPLAB X)

Set the Codeoffset as shown: Set the ROM ranges as shown:

the Makefile approach

Write your Makefile to incorporate the "--rom" and "--codeoffset" settings as shown:

CC = xc8
LIB_INC_PATH = "./include"

CHIP = 16F1454

CFLAGS = --chip=$(CHIP) -Q -G  --double=24 --float=24
CFLAGS += --rom=default,-0-1FF,-1F7F-1F7F
CFLAGS += --codeoffset=0x200
CFLAGS += --opt=default,+asm,-asmfile,+speed,-space,-debug --addrqual=ignore
CFLAGS += --mode=pro -N64 -I. -I$(LIB_INC_PATH) --warn=0 --asmlist --summary=default,-psect,-class,+mem,-hex,-file --output=default,-inhx032 
CFLAGS += --runtime=default,+clear,+init,-keep,-no_startup,+osccal,-resetbits,-download,-stackcall,+clib

MOUSEPLAY_OBJS = usb.p1 usb_hid.p1 usb_descriptors.p1 main.p1

MOUSEPLAY_HDRS = usb_config.h

all: mouseplay.hex

mouseplay.hex: $(MOUSEPLAY_OBJS)
	$(CC) $(CFLAGS) -o./$@ $(MOUSEPLAY_OBJS)

%.p1: %.c $(MOUSEPLAY_HDRS) Makefile
	$(CC) --pass1 $(CFLAGS) -o./$@ $<

clean:
	rm -f *.p1 *.d *.pre *.sym *.cmf *.cof *.hxl *.lst *.obj *.rlf *.sdb
	rm -f funclist

after either of the above approaches, one should have a .hex file that one can convert to a DFU binary using the provided 454hex2bin utility

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