Flashing an application using the Actinius I/O Serial Programmer

Question

Hi. I'm trying to flash the Cell Fund Lesson 4, Exercise 1 app – Reading buttons and controlling LEDs over MQTT, to an Icarus IoT Board v2 using the Actinius I/O Serial Programmer via usb. 
 I'm using SDK v2.8.0 and have flashed this successfully to the Thingy91. 
 I tried clean builds, and also tried including the following to prj.conf for the Icarus IoT Board v2 build with board target actinius_icarus/nrf9160/ns 
 
 CONFIG_BOOTLOADER_MCUBOOT =y 
 CONFIG_BUILD_OUTPUT_BIN =y 
 
 App builds fine, but I can't find the app_update.bin file. (or zephyr.signed.bin) and trying to flash any other *.bin file from the <path>MQTT_broker\IcarusBuild\MQTT_broker\zephyr folder gives an "Upload failed Firmware is not a valid device image." message. 
 What am I doing wrong?

dejans · Answer

Hi, Since you are using NCS v2.8.0, sysbuild is included in your build. There is a change related to MCUboot from previous NCS versions. If you do not already have it, you should create sysbuild.conf in your project root directory and add the line SB_CONFIG_BOOTLOADER_MCUBOOT=y there. You can get more information about this in Sample with MCUboot . Best regards, Dejan

dejans · Answer

Hi, I can see in your log that conflicting file names have been discovered by the build system. CMake Error at C:/ncs/v2.8.0/zephyr/cmake/modules/extensions.cmake:2842 (message):
 Conflicting file names discovered. Cannot use both
 actinius_icarus_nrf9160.conf and actinius_icarus.conf. Please choose one
 naming style, actinius_icarus_nrf9160.conf is recommended. You could try to resolve this naming issue. Best regards, Dejan

Flashing an application using the Actinius I/O Serial Programmer

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