Difference between the various projects within an example in the nRF51 SDKs

[brianreinhold]

There are the following projects under the Health Thermometer example for Keil

What is the difference between them when trying to install on the nRF51 DK? I could not find any documentation or read me describing what these are for.

Which should I use when I desperately want to get something to work on the DK? So far I have had no luck with the s110 project. Should I be using the UART?

s110
ser_s110_hci
ser_s110_spi
ser_s110_uart

[Vidar Berg]

Hi,

You should use  "s110" configuration. The other ones pre-fixed with "ser_" are configured for serialization (i.e. 2 chip solution - one host processor + one connectivity process. See Running a serialized application).

Which SDK/Softdevice combination are you testing with (comp. matrix SDKs and SoftDevices )?

[brianreinhold]

Okay, that was my guess. So I am choosing the correct one. One day I might get rid of that damn Cortex-M0 error on flashing. 

[Vidar Berg]

brianreinhold said:

Or are all the SDK projects simply configured wrong memory layout wise?

No, the default layout is correct. But note that Keil resets to the default layout if you change device variant (i.e. default layout for the device variant), could that be the reason?

Default layout for ble_app_hrs_s130 in SDK 12.3.0

[brianreinhold]

Well that would be a critical piece of information. I did switch to nrf51822 as that is the chip I have to work with. But resetting the values to the ones you provided did not solve the issue. Do I also need to do something in the flash config (the programming and algorithm starts)? Or are the values different for the nRF51822?

Since I am using the hts (thermometer) would that be different?

[Vidar Berg]

No, it should have worked, we use the same flash algorithm for all 51 variants.

Is this the board you're using: https://www.nordicsemi.com/Software-and-tools/Development-Kits/nRF51-DK ?

[brianreinhold]

Yes it is. I bought it a few months ago. I have been using it as a debugger for an nrf51822 chip in a production device (pin 20) but that is not connected now. I had to cut SB9 (advice from you guys) but have jumpered the current measurement pins to give power back to the main chip.

SoftDevice loads, the HTS hex does not.

[Vidar Berg]

brianreinhold said:

Yes it is. I bought it a few months ago. I have been using it as a debugger for an nrf51822 chip in a production device (pin 20) but that is not connected now. I had to cut SB9 (advice from you guys) but have jumpered the current measurement pins to give power back to the main chip.

 That's ok as long as you remember to short the connection with a jumper when you want to program the nRF51 chip on the DK.

I tried to program the hts example as well and took some screenshots if you want to compare settings:

[brianreinhold]

I just tried installing backwards. I installed hts first, and then SoftDevice. And it worked.

I have NO idea why.

It installs, but it does not work. Cant set break points either. But its been two days to get it to install.

[Vidar Berg]

I'm afraid I can't explain that either, the programming order should not matter. Could you quickly try another example such as the ble_app_hrs to see if you get the same result?

[brianreinhold]

Okay,

I did. Took a while to copy the information and set it all up. Same result. Installs when done in reverse, Cortex-M0 error if I install SoftDevice first. However, like the HTS, when successfully installed, it does not work.

Used nrfConnect to erase all content on the DK by the way.

[Vidar Berg]

brianreinhold said:

Took a while to copy the information and set it all up.

Did you have to make any changes to the project? It should compile out-of-the-box.

brianreinhold said:

when successfully installed, it does not work.

Please pause the debugger and take a screenshot showing the CPU registers and editor view.

[brianreinhold]

It compiled out of the box. But I did change it to nrf51822 and then reset the parameters you had in your dialogs.

I have been unable to debug - set breakpoints in any case. Never makes it to main.

I am sorry, I dont know how to atrtach a png. Tried insert, no luck. But I have one,

Got it.