skywalker-1/firmware/Makefile

FX2LIBDIR=fx2lib/
BASENAME=skywalker1
SOURCES=skywalker1.c
A51_SOURCES=dscr.a51
VID=0x09C0
PID=0x0203
CODE_SIZE=--code-size 0x3c00

include $(FX2LIBDIR)lib/fx2.mk

load: $(BUILDDIR)/$(BASENAME).bix
	../tools/fw_load.py load $(BUILDDIR)/$(BASENAME).ihx

eeprom: $(BUILDDIR)/$(BASENAME).ihx
	python3 ../tools/eeprom_write.py convert $(BUILDDIR)/$(BASENAME).ihx \
		-o $(BUILDDIR)/$(BASENAME)_eeprom.bin
Add EEPROM boot firmware (exp 0xDB) and supporting tools Firmware: Rewrite skywalker1.c for EEPROM boot experiment — tests whether I2C hardware controller works after FX2 boot ROM completes EEPROM load (bypassing the CPUCS restart that triggers BERR). Tools: - fw_load.py: Add I2C cleanup stub, pre-halt register flush, improved error handling and segment loading - eeprom_write.py: Add IHX→C2 EEPROM image converter (16KB format with length-prefixed segments, checksum) - eeprom_dump.py: Refactor for cleaner output, better hex display - skywalker_lib.py: Minor I2C register constant updates Docs: - EEPROM-RECOVERY.md: Four recovery options for soft-bricked device (SOIC clip, SDA pull-up, desolder, wait-for-timeout) - Master reference: Updated with EEPROM boot findings Status: EEPROM flash blocked — stock firmware I2C proxy returns pipe errors, host-side 0xA0 writes proven unable to drive peripheral bus. Device boot ROM intermittently hangs on EEPROM I2C read (~3-6% success). 2026-02-20 10:56:21 -07:00			`FX2LIBDIR=fx2lib/`
			`BASENAME=skywalker1`
			`SOURCES=skywalker1.c`
			`A51_SOURCES=dscr.a51`
			`VID=0x09C0`
			`PID=0x0203`
			`CODE_SIZE=--code-size 0x3c00`

			`include $(FX2LIBDIR)lib/fx2.mk`

			`load: $(BUILDDIR)/$(BASENAME).bix`
			`../tools/fw_load.py load $(BUILDDIR)/$(BASENAME).ihx`

			`eeprom: $(BUILDDIR)/$(BASENAME).ihx`
			`python3 ../tools/eeprom_write.py convert $(BUILDDIR)/$(BASENAME).ihx \`
			`-o $(BUILDDIR)/$(BASENAME)_eeprom.bin`