Problem with getting started with software development on nRF52805

RE: Problem with getting started with software development on nRF52805

Kenneth — Mon, 07 Jun 2021 09:34:57 GMT

I suggest to check out the youtube tutorial:
https://www.youtube.com/watch?v=t-kh1EbesvI&list=PLx_tBuQ_KSqGHmzdEL2GWEOeix-S5rgTV&index=6

And documentation:
https://infocenter.nordicsemi.com/topic/ug_gsg_ses/UG/gsg/intro.html

If you want wireless UART I suggest to check out this example:

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/ble_sdk_app_nus_eval.html

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/ble_sdk_app_nus_c.html

Kenneth

RE: Problem with getting started with software development on nRF52805

Lorenzo — Mon, 07 Jun 2021 06:49:24 GMT

So I suppose commenting the PPI channels declaration will solve that issue.

What about the problem with the source files and the easiest way to create a wireless uart link?

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Tue, 01 Jun 2021 20:08:49 GMT

You can find a high level comparison of nRF52805 and nRF52832 here:
https://infocenter.nordicsemi.com/topic/struct_nrf52/struct/nrf52.html

For instance nRF52805 only have 10 PPI channels, while nRF52832 have 20. This may explain some of your problems.

Also check out:
https://devzone.nordicsemi.com/nordic/short-range-guides/b/getting-started/posts/developing-for-the-nrf52805-with-nrf5-sdk

RE: Problem with getting started with software development on nRF52805

Lorenzo — Tue, 01 Jun 2021 11:33:09 GMT

Please let me know if there is any news about my questions

Lorenzo

RE: Problem with getting started with software development on nRF52805

Lorenzo — Mon, 31 May 2021 09:44:16 GMT

I have more information regarding the source files issue

Here's what I've tried:

I added the libuarte source (.c) files inside the nRF_Libraries folder

And created a folder named "nRF_Proprietary_RF" for the ESB source files

I can compile the nrf_esb.c file, but if I try building the project the compiler says nrf_esb.h doesn't exist

I can't compile nrf_libuarte_async.c nor nrf_libuarte_drv.c alone, I get the following errors:

Same happens when I try building the complete project

Do I need to change/add parameters inside sdk_config.h (?)

I added

#define NRF_LIBUARTE_ASYNC_WITH_APP_TIMER 1

Since the compiler said it was required

Lorenzo

RE: Problem with getting started with software development on nRF52805

Lorenzo — Fri, 28 May 2021 09:10:55 GMT

Thanks

I'm using the ble_app_uart project as a starting point since I was able to build it and flash it onto my external board, by replacing the main.c file with the one from the uart example and I was able to test serial communication without any issues.
I can't seem to be able to include the libuarte files, SES says "nrf_libuarte_async.h: No such file or directory"
I tried importing it into the nRF_Drivers and nRF_Libraries with no success
The same happens with the source files for ESB

Also, I was wondering if using ESB was the best and easiest way to connect two nRF52805 modules

What I'm currently trying to achieve is

STM8 <-- UART --> nRF52805 <-- ESB? --> nRF52805 <-- UART --> STM8

Basically UART over ESB

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Thu, 27 May 2021 11:52:09 GMT

Yes.

Kenneth

RE: Problem with getting started with software development on nRF52805

Lorenzo — Wed, 26 May 2021 14:08:25 GMT

I had initially excluded libuarte because of EasyDMA since in my case reliability isn't a priority, but I see now the nrf_libuarte_async functions which seem to be what I'm looking for, correct?

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Wed, 26 May 2021 13:25:11 GMT

[quote user="LTEC"]Since the uart functions let me send or receive one byte at a time I suppose that if I need to receive a string (e.g. "<2350>") I should then write a function that takes the single bytes and puts them in a char array so I can use it as a string, right?[/quote]

For app_uart_put() that is the case yes, though there should be other UART libraries that can be more efficient in this regard, e.g. libuarte:
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/lib_libuarte.html

RE: Problem with getting started with software development on nRF52805

Lorenzo — Tue, 25 May 2021 14:26:40 GMT

We don't have a logic analyzer, but luckily it wasn't necessary.
I tried using pin 14 (16) as the TX pin and I was able to receive the data I sent using the app_uart_put function, also printfs seem to work.
I will investigate the reason why the other pin wasn't working.

Since the uart functions let me send or receive one byte at a time I suppose that if I need to receive a string (e.g. "<2350>") I should then write a function that takes the single bytes and puts them in a char array so I can use it as a string, right?

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Tue, 25 May 2021 13:38:05 GMT

[quote user="LTEC"]What I tried doing was sending a character by using "app_uart_put('A');", but I wasn't completely sure about it as it seemed too easy[/quote]

That should work, have you tried a different pin for test? Looked at the pin on a logic analyzer?

Kenneth

RE: Problem with getting started with software development on nRF52805

Lorenzo — Tue, 25 May 2021 13:32:36 GMT

I have used pins 8 (21) and 9 (18) following the pinout from Minew

I set the baud rate to 2400 (but also tried leaving it to 115200 like the original code)

While debugging I can see the exact characters I send to the module through HTerm, by stopping the code when app_uart_get gets executed

Did you mean adding a pull-up on the TX on the custom board? (Or on the RX on the USB/UART board?) Minew's module can receive the data just fine, I can't seem to be able to send anything from it

What I tried doing was sending a character by using "app_uart_put('A');", but I wasn't completely sure about it as it seemed too easy

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Tue, 25 May 2021 13:02:10 GMT

Which pins have you used for TX and RX?

Have you tried adding a pull-up on the RX?

A logic analyzer trace could be helpful, in case it's a mismatch in the the voltage or baud rate.

Kenneth

RE: Problem with getting started with software development on nRF52805

Lorenzo — Mon, 24 May 2021 14:04:39 GMT

Thanks, I was finally able to build the project and flash my external board.

I proceeded to try building the uart example from the SDK again by replacing the main.c file in the working project I had just built.
Debugging now works as intended, but I can't see any of the characters that I try to send using the app_uart_put function on the serial monitor.

The USB/UART board I'm using has 2 LEDs that light up when something is transmitted or received, only the TX one lights up which should mean nothing gets written on the TX pin.

I checked the wiring and if I had followed the pinout correctly, but I can't see any issues.

Am I using the put function the wrong way?

Lorenzo

RE: Problem with getting started with software development on nRF52805

Vidar Berg — Fri, 21 May 2021 15:52:39 GMT

Hello,

It's attempting to load Softdevice version v.7.0.1, but nRF5 SDK 17.0.2 does not include this Softdevice version, so maybe that explains why it's not found?

It should look like this if you are using SDK 17.0.2:

RE: Problem with getting started with software development on nRF52805

Lorenzo — Thu, 20 May 2021 09:16:30 GMT

I tried applying the same fix mentioned by AGarcia and got the same error message:

Seems like SES is looking for the softdevice in the wrong directory, but it's not possible to see the complete path.

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Wed, 19 May 2021 17:34:55 GMT

Kenneth

RE: Problem with getting started with software development on nRF52805

AGarcia — Wed, 19 May 2021 16:11:07 GMT

Hi there, I had the same problem that you had, I change it in the code: "__RAM1_segment_end__" to "__RAM_segment_end__" in the

"ses_startup_nrf_common.s" file and it compiled correctly, however when I tried to download it to the target I get an error "Additional Load File [0]"

RE: Problem with getting started with software development on nRF52805

Lorenzo — Wed, 19 May 2021 14:28:42 GMT

Yes, I tried the UART over BLE example (ble_app_uart), but I get the following errors while building

Output/Release/Obj/ble_app_uart_pca10040e_nrf52805_s112/ses_startup_nrf_common.o: in function `InitializeUserMemorySections':

undefined reference to `__RAM1_segment_end__'

So I changed "RAM" to "RAM1" under Code > Build > Memory Segments
But now I get this:

cannot find run section .cli_sorted_cmd_ptrs_run referenced in cli_sorted_cmd_ptrs

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Wed, 19 May 2021 14:05:45 GMT

Have you tried any of the preconfigured projects for the nRF52805 in the blog post?

Kenneth

RE: Problem with getting started with software development on nRF52805

Lorenzo — Wed, 19 May 2021 06:55:54 GMT

I have downloaded the latest nRF Command line tools as well as the latest version of the nRF Connect suite.

There are no voltage issues on the module.

I suppose that what's preventing me from debugging externally is that the project I'm using was initially intended to be executed on the nRF52832 and I wasn't able to properly edit it in order to make it work on the nRF52805.

I was able to find the blog post I mentioned in my previous reply only yesterday morning so I discovered I had missed quite a few steps such as patching SDK files and editing preprocessor directives.
Unfortunately the steps described in the post don't work with the latest version of the SDK (17.0.2), the compiler throws a bunch of errors I'm currently not able to solve.

So before I try debugging again, I need help on how to create a SES project that can work on the nRF52805.

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Tue, 18 May 2021 14:37:11 GMT

Have you downloaded the latest nRF Command line tools?

Can you try to run an 'nrfjprog --eraseall' on the nRF5-DK itself, in case it's programmed with something that prevent external debugging to work as intended?

I can't understand why you are not able to debug externally, have you checked the voltage on the module?

Kenneth

RE: Problem with getting started with software development on nRF52805

Lorenzo — Tue, 18 May 2021 13:51:03 GMT

Hello,

I tried running the command, but I'm afraid the thing is bigger than that.

I was able to find this guide Developing for the nRF52805 with nRF5 SDK and tried following it, but it looks like there are issues with the 17.0.2 version of the SDK.

As user timuser said it would be great if it was possible to have just a simple working blinky/Hello World example natively made for nRF52805 that we can use as a starting point to build on.

Lorenzo

RE: Problem with getting started with software development on nRF52805

Kenneth — Tue, 18 May 2021 12:07:42 GMT

Hi,

Can you try to run 'nrfjprog --eraseall' from command line tool? I am suspecting there is some data that is not erased.

Also, make sure that you add a pull-up on the RXD line to avoid floating input, framing error and assert. However I do not see how this should affect your code from not running.

Kenneth