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

[Ramulous]

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.

[Amanda Hsieh]

Hi, 

For NCS v2.4.0, you can use the thingy53_nrf5340_cpuapp.conf and thingy53_nrf5340_cpuapp.overlay under nrf\samples\bluetooth\peripheral_uart\boards.

Regards,
Amanda H. 

[Ramulous]

/Documents/Nordic/myapps/fund_less6_exer2_solutionNordic/prj.conf:33: warning: attempt to assign the value 'y' to the undefined symbol BT_NUS_UART_ASYNC_ADAPTER

This did not work as you can see the BT_NUS_UART_ASYNC_ADAPTER was undefined.  I need a super really small primitive project that can both transmit and receive uart data.  That's why Lesson 6 exercise 2 needs to work with 2.4 and in all future releases 2.5 and so on.  This project does not use Bluetooth.  Can you are someone take another stab.  Ideally you would test with that project (lesson 6 exerercise 2)   Thanks

[Amanda Hsieh]

Hi, 

Remove the CONFIG_BT_NUS_UART_ASYNC_ADAPTER=y. The USB CDC should work. 

Ramulous said:

That's why Lesson 6 exercise 2 needs to work with 2.4 and in all future releases 2.5 and so on.

Without modification, Lesson 6 Exercise 2 can work in v2.4.0. You can refer to https://github.com/NordicDeveloperAcademy/ncs-fund/tree/main/v2.x.x/lesson6/fund_less6_exer2_solution 

-Amanda H.

[Ramulous]

I had already tried removing the BT_NUS_UART_ASYNC_ADAPTER and the serial port still does not enumerate.  In addition the initial problem statement is that https://github.com/NordicDeveloperAcademy/ncs-fund/tree/main/v2.x.x/lesson6/fund_less6_exer2_solution 

does not enumerate the serial port so that I can use the logger printk and so on.  When you say it can work I asking then how can it work.  You should have said that it will enumerate.  I think you don't know what I mean by the serial port enumeration I will explain that next.

[Ramulous]

What the issue is and what I mean by serial port enumeration is that the serial ports show up in DeviceManager on a 64 bit Windows 10 machine.  Here is a good example from the nRF5340-DK (i.e. not the Thingy 53).  Here the nRF5340-DK is showing two serial ports COM 15 and COM 16.  This means that the nRF5340-DK has enumerated two serial ports COM 15 and COM 16.  Now I will power down the DK to show you that they are no longer enumerating.  

If the two figures came through and you can see them now you can see that the DK is no longer enumerating.  

That is what I mean that the THINGY 53 will not enumerate the serial port(s).  This is necessary to be able to use printk the logger and so on.  At the same time it would be nice to receive data through the port to the THINGY 53 as well but that is not part of the Lesson 6 exercise 2 unfortunately.