Hi @Ivan
Unfortunately, this is not possible with the Arduino IDE. The reason is that when you create the firmware (.spk) for a new core, it overwrites the build of the previous core. This means that there is one .spk file for only one core at a time. Otherwise you could use the following command to upload multiple binaries for all cores at once:
$ ./flash_writer -s -d -n <main spk file name>.spk <sub1 spk file name>.spk ...
Best Regards,
Kamil Tomaszewski
@JK122 we can't really help you with the TV API since we are not supporting it. And I can't say if it will work or not using this written permission, the permission is for the Audio Control API.
(but I would give it a try, fill in the form, read it and decide if you think it is worth a try. You never know until you try)
@Arco Another thing I noticed in your example is incorrect code in Make.defs:
ifneq ($(CONFIG_EXAMPLES_HLASOVE_POVELY),y)
CONFIGURED_APPS += hlasove_povely
endif
It should be:
ifeq ($(CONFIG_EXAMPLES_HLASOVE_POVELY),y)
CONFIGURED_APPS += hlasove_povely
endif
ifneq -> ifeq
Delete or move your old example out of sdk and create a new one using this command.
Hi @Arco
Could you try to create a new example using this command:
sdk$ ./tools/mkcmd.py hlasove_povely
Hi @Arco
I'm glad to hear that. 
Hi @Arco
Do you include in your Makefile: include $(APPDIR)/Application.mk
The error could be because it is missing.
Hi @Arco
Could you execute binary mkspk under nuttx/tools/cxd56 and tell me what output did you get?
spresense/nuttx/tools/cxd56$ ./mkspk
We had what same result in earlier versions of the firmware for STR-DN1080 also, but I believe that is fixed for that receiver (don't have the possibility to test right now). Looks like the firmware for STR-DN860 is not updated since then (I don't know if the firmware will be updated for STR-DN860).