SHELL := /bin/sh
MAKEFLAGS += --no-print-directory
export CARGO_BUILD_JOBS ?= 2

.DEFAULT_GOAL := help
.DELETE_ON_ERROR:

override EMBEDDED_TARGET := thumbv7em-none-eabihf
override PACKAGE := kaptan-$(BOARD)
CARGO_TARGET_DIR ?= ../../target
override ELF := $(CARGO_TARGET_DIR)/$(EMBEDDED_TARGET)/release/$(PACKAGE)

.NOTPARALLEL:
.PHONY: help build flash

help:
	@printf '%s\n' 'Usage: make -C firmware/boards/$(BOARD) build|flash' '' \
		'  build  Build and package $(PACKAGE) in release mode' \
		'  flash  Build, package, and write $(PACKAGE) over DFU' '' \
		'CARGO_TARGET_DIR defaults to firmware/target; relative overrides are relative to this board directory.' \
		'For custom Cargo or DFU options, invoke cargo or dfu-util directly.'

build:
	cargo build --release --locked --offline -p $(PACKAGE) --bin $(PACKAGE) \
		--target $(EMBEDDED_TARGET) --target-dir "$(CARGO_TARGET_DIR)"
	../../scripts/create-dfu-image.sh "$(ELF)"

flash: build
	dfu-util --device 0483:df11 --alt 0 --dfuse-address 0x08000000:leave \
		--download "$(ELF).bin"