Part 2: Cleaning up the template

Now that you have a base app and know how to install your app, we will start the last bit of preparation before app creation: removing useless things from the template (I will add them back during the tutorial if needed)

The template contains lots of unnecessary code (at least for now), so I recommend you to back up the original main.c file and create a new one with the following content:

#include <eadk.h>

const char eadk_app_name[] __attribute__((section(".rodata.eadk_app_name"))) = "Snake";
const uint32_t eadk_api_level  __attribute__((section(".rodata.eadk_api_level"))) = 0;

int main(int argc, char * argv[]) {
  eadk_display_draw_string("Hello, world!", (eadk_point_t){0, 0}, true, eadk_color_black, eadk_color_white);
  eadk_timing_msleep(3000);
}

Notice I've changed the app name from "App" to "Snake" in the process.

We won't need the external data for now, so remove the input.txt file and its references in the Makefile (be careful to not replace the tabulations by spaces)

.PHONY: run
run: $(BUILD_DIR)/app.nwa
	@echo "INSTALL $<"
	$(Q) $(NWLINK) install-nwa $<

$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.nwa
	@echo "BIN     $@"
	$(Q) $(NWLINK) nwa-bin $< $@

$(BUILD_DIR)/%.elf: $(BUILD_DIR)/%.nwa
	@echo "ELF     $@"
	$(Q) $(NWLINK) nwa-elf $< $@

We now have a "blank" project which we can use for creation.

In the next section we will create a snake controlled by the arrow keys.