Thingy 53 does not enumerate serial port for Dev Academy Lesson 6 exercise 2

Question

Currenty I am on version 2.1 and was able to get the Thingy 53 to enumerate serial port(s) but using the old version 1.x thingy53.c file and the include files and functions that are in that file.

Fullscreen thingy53.c Download

/*
 * Copyright (c) 2021 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */

#include <zephyr/init.h>

#include <img_mgmt/img_mgmt.h>
#include <os_mgmt/os_mgmt.h>
#include <zephyr/mgmt/mcumgr/smp_bt.h>

#include <zephyr/usb/usb_device.h>

#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(thingy53_setup);


static int bt_smp_init(const struct device *dev)
{
	ARG_UNUSED(dev);
	int err = 0;

	img_mgmt_register_group();
	os_mgmt_register_group();

	err = smp_bt_register();

	if (err) {
		LOG_ERR("SMP BT register failed (err: %d)", err);
	}

	return err;
}

static int usb_cdc_init(const struct device *dev)
{
	int err = usb_enable(NULL);

	if (err) {
		LOG_ERR("Failed to enable USB");
	}

	return err;
}

SYS_INIT(bt_smp_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY);
SYS_INIT(usb_cdc_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY);

In order to get thingy53.c to compile I had to select Use build system default under configuration in the edit build configuration instead of prj.conf. The prj.conf file is present anyway.

I then uplevelled to version 2.4 and just flat out tried the solution directly from the Nordic Git Hub server and was not able to get the serial port to enumerate. I tried using parts of the old 1.x solution specifically the thingy53.c file once again but no luck. Did some reading and looks like the thingy53.c file is no longer necessary anyway. What is the solution to get the Thingy53 to enumerate and what's the difference between picking build system default or prj.conf in the edit build configuration. I tried to attach ncs-fund-main/v2.x.x/lesson6 https://github.com/NordicDeveloperAcademy/ncs-fund here that doesn't enumerate a serial port so that console functions will work like printk, the logger and so on.

I'm using Visual Studio Code and any other sugestions that I can find.

Ramulous · Accepted Answer

Thank you I got both the lesson project and your project to work (enumerate serial port(s) ) by using the thingy53_nrf5340_cpuapp instead of thingy53_nrf5340_cpuapp_ns like I always have. That is Cortex M security extensions (CMSE) is disabled to work and enabled it does not. Some initial examples from Nordic unless I recall wrong the examples did use CMSE so I have been using the tool that way all the time. 
 
 I still need to point out that when we were using thingy53.c using thingy53_nrf5340_cpuapp_ns, CMSE enabled, the serial ports did enumerate. So in essence, you may not have completely fixed the SDK by no longer needing thingy53.c I think the serial ports should enumerate either way. So in my opinion someone at Nordic should take a look at that. Or explain to me the situation. 
 
 I also wonder in the Configuration pull down the difference between Use build system default and prj.conf is? Because that would make a difference when we were still using the thingy53.c file. 
 
 Is there a document somewhere that guides us to upgrading to 2.4? 
 
 Thanks for your help.

Thingy 53 does not enumerate serial port for Dev Academy Lesson 6 exercise 2

Top Replies