nRF5 action!

[korttoma]

@nca78 :+1: no hurry ;)

[Toyman]

@gohan you mean programmer? Nothing beats DK with jlink.
Other options: jlink EDU, DIY BlackMagicProbe or STLink

[gohan]

ok, I bought 2 of the nrf52 at half the price, now what would be the cheap solution among the programmers? Jlink is on the pricy side.

[Nca78]

@gohan said in nRF5 Bluetooth action!:

ok, I bought 2 of the nrf52 at half the price, now what would be the cheap solution among the programmers? Jlink is on the pricy side.

Cheap jlink clones with 4 wires from AliExpress/Ebay seem to work. So does the ST-Link v2 which is probably the cheapest option.

[gohan]

I got kind of lost with all those jlink clones with so many different versions. The ST-Link V2 I found it on digikey and similar sites for around 18/19€, is it the right one?

[Omemanti]

@gohan I use both the ST-LinkV2 (2 dollars from eBay) and the NRF52832-DK both work like a charm.

[Omemanti]

@gohan LOL, i need to stop buying these things, got 12 just waiting to be used.. but at this price, its almost impossible to not buy them :)

[Toyman]

@gohan said in nRF5 Bluetooth action!:

The ST-Link V2 I found it on digikey and similar sites for around 18/19€, is it the right one?

Don't do that. Either buy $2 clones or invest into DK or:
https://www.adafruit.com/product/3571

[gohan]

Is this one ok? https://www.ebay.it/itm/ST-Link-V2-Programming-Unit-mini-STM8-STM32-Emulator-Downloader-M89/122178354704?hash=item1c7265be10:g:xx4AAOSwm7pZ2Kb-

NRF52832-DK is kind of way over budget :D

[Omemanti]

@gohan sure, I bought some of those. Works great. One crashed so now I bought a couple, just to be sure.. :)

[Nca78]

@nca78 said in nRF5 Bluetooth action!:

So I tried your code with a more recent version of the chip and I have a power consumption around 1mA.
This is not surprising because in fact issue 39 seems to not be completely fixed, if I believe this link:
https://devzone.nordicsemi.com/f/nordic-q-a/577/current-consumption-when-using-rtc-ppi-and-gpiote#post-id-18533

"The third revision hardware of the nRF51 has a solution for the GPIOTE OUT tasks, which has very low current consumption (<1uA). The third revision nRF51 hardware will be released in a few days. The third revision hardware still does not have a solution for the GPIOTE IN events, they still consume high current, so for low current applications, use the GPIOTE PORT event instead or the app_button libary."

From what I see it was never fixed.

Took time but after failure trying to make a version by myself I decided to include app_gpiote library from SDK in my script and it works, it's using around 1uA more than LPCOMP (I measure 5.5 uA with my multimeter) but it can use any pin and in theory any number of pins without increasing power consumption.
The behavior is similar to pin change interrupt on ATMega328, you have one interrupt for all the pins you are watching, so you have to check which pin generated the interrupt but app_gpiote is preparing the work for you.
I have this consumption with a similar script than @Neverdie for LPCOMP: using MySensors with MY_CORE_ONLY, preparing the interrupt then calling the sleep(ms) function from MySensors library, and it works as expected changing status of led immediately when I change status of pin, and waking up at the end of the interval if I don't.
I'll do more tests tomorrow including a full MySensors script, and post the info here. It needs a bunch of files from SDK and adding a (weak) attribute to GPIOTE_IRQHandler() in sandeepmistry's code so it can be overridden in the script.

[Yveaux]

@omemanti said in nRF5 Bluetooth action!:

I bought some of those. Works great

Do you use them with windows?
I tried to get them to program an nrf52832, but openocd in Arduino ide under windows doesn't detect them...
Both stlinks work in Linux.

[mfalkvidd]

@yveaux I have used a ST-Link v2 (clone) on Windows 7, didn't run into any problems.

[Yveaux]

@mfalkvidd from the arduino ide? Did you follow any guide or remember specific settings?

[mfalkvidd]

@yveaux yes from the Arduino IDE. I just followed this guide.

[mfalkvidd]

I did follow https://github.com/sandeepmistry/arduino-BLEPeripheral as well (for a non-MySensors use case). Not sure which one I did first.

[Yveaux]

@mfalkvidd hmmm... No specific mention of any st-link stuff to configure. Must be me then :scream:
I just wanted to try some ST-links I ordered.
Ah well, I'll give it another try and otherwise go back to my j-link, which works flawlessly.

Thanks anyway!

[Omemanti]

@yveaux jup, both work on Windows . I had to install the right drivers using zadig.

I only use the Arduino IDE for uploading, just select the st-link and it works.

[Yveaux]

@omemanti ok, thanks for the feedback. I'll give that a try then :+1:

[Yveaux]

@omemanti yup, installed WinUSB driver with Zadig and worked instantly! Thanks again!