Question about the bootloader

RE: Question about the bootloader

Ukoolele — Tue, 21 May 2019 15:23:24 GMT

Thanks you !

Hm this is possible, I will follow your advice ! Have a good day !

RE: Question about the bootloader

Andy — Tue, 21 May 2019 15:14:25 GMT

If you have any questions about the SPI manager just shoot and I'll try to help.

It's pretty straight forward though (if you read the API documentation). You shouldn't run into any problems. I think people run into problems when they try to write their own HALs from scratch, or use lower level APIs.

RE: Question about the bootloader

Ukoolele — Tue, 21 May 2019 15:11:58 GMT

I know how to read documentation ahah, I don't want youtube videos too, but the only tutoria I found is outdatted (2016 by mind) ahah.

Thanks for that, I will try to work with !
Thanks for your help !

RE: Question about the bootloader

Andy — Tue, 21 May 2019 15:04:33 GMT

I agree that there aren't many "tutorials". There are some "examples" though.

In my experience, it is easiest to just import the SDK library you want to work with, and take a look at the API. Eventually you'll learn the thought process of the SDK development team and it'll get easier to use new libraries. Of course, you have to learn how to read documentation. If you want a YouTube tutorial for every possible component of the NRF52 SoCs you'll have a hard time developing your application.

For SPI, the nrf_spi_mngr library worked quite well for me. There's an example that you can use for reference.

RE: Question about the bootloader

Ukoolele — Tue, 21 May 2019 14:55:05 GMT

The problem is there is no real tutotrial or courses to learn how to wrok with Nordic's SDK. In total, I passed 1 month to search how to understand Nordic's SDK Example. I understood the basics, but when I wanted to work with SPI, or other, there is no explanations and I don't understand how that's work. So if you have a good tutorial or any explication about how to use SPI with the nRF52832, can you send it to me ? Thanks

RE: Question about the bootloader

Andy — Tue, 21 May 2019 14:42:00 GMT

Well, I guess then you should evaluate the trade-off between the time that it takes learning how to work with Nordic's SDK, and the time it takes to get support for questions like this.

RE: Question about the bootloader

Ukoolele — Tue, 21 May 2019 14:35:01 GMT

I choosed to use Arduino because this is simpler than the Nordic SDK ! Before the Sparkfun's Breakout Board, I bought the nRF52DK and I didn't understand nothing about this card. I have a good level in programmation (I worked on PIC16F for example). To change the chip select pins with the GPIOs for each SPI slaves, with Arduino that tooks only 3 lines, with Nordic SDK, I searched during one week to do the same thing and that not works.

This is why I choosed that, I wanted to use BLE and Nordic Chip's are the best for that.

RE: Question about the bootloader

Andy — Tue, 21 May 2019 13:51:57 GMT

If I were you, I would drop all that Arduino bloatware and work directly with Nordic's SDK.

If you use third-party libraries you will have to rely on the third-parties for support. The Arduino "core" has about one commit/month, and the bootloader you posted was last updated over two years ago. From my perspective, your support needs won't be met.

If you use standard Nordic resources, you can get all the help you need straight from this community and Nordic's technical support.

I see no reason why you should go use Arduino's IDE to develop anything.

RE: Question about the bootloader

Andy — Tue, 21 May 2019 13:35:54 GMT

According to the readme, that's just the UART bootloader from SDK 11 slightly modified to enter bootloader using specific pins. There's absolutely no mention about Arduino whatsoever.

RE: Question about the bootloader

Ukoolele — Tue, 21 May 2019 13:29:54 GMT

Hum I don't really know, ahah, but in the Sparkfun board, they put their hown bootloader, and with this bootloader I can make my program as an arduino board. I found this bootloader here : https://github.com/sparkfun/nRF52832_Breakout/tree/master/Firmware/bootloader-custom, but I don't know how I can put it in the nrf52832. Could you help me ?

RE: Question about the bootloader

Andy — Tue, 21 May 2019 11:55:56 GMT

What's an Arduino-compatible bootloader?