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# updi-reset makefile
# date : 15/02/2023
# Support building from outside of directory (via e.g. `make -C <path>`
# taken from <https://stackoverflow.com/a/23324703>
MAKE_PATH = $(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
CROSS_COMPILE ?=
CC = $(CROSS_COMPILE)gcc
CFLAGS ?= -Wall -Werror
# Executable
EXEC = $(MAKE_PATH)/updi_reset
# For testing purposes
ifeq ($(findstring reset,${MAKECMDGOALS}), reset)
ifndef RST_GPIOCHIP_IDX
$(error RST_GPIOCHIP_IDX is not set)
endif
ifndef RST_GPIO_IDX
$(error RST_GPIO_IDX is not set)
endif
endif
.PHONY: reset build clean
build: $(EXEC)
$(EXEC): *.c *.h Makefile
$(CC) serial_emu.c updi_emu.c updi_reset.c -lgpiod $(CFLAGS) -o $(EXEC)
# For testing purposes
reset: $(EXEC)
# Give this script the highest scheduling priority (-20) To avoid extra intra-packet sampling delays.
nice --20 $(EXEC) $(RST_GPIOCHIP_IDX) $(RST_GPIO_IDX)
clean:
rm -f $(EXEC)
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