flashing problem with some nrf52832 shields using the DK-nrf52

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sun, 29 Jul 2018 05:46:47 GMT

Oh thanks again for this information.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Nguyen Hoan Hoang — Sun, 29 Jul 2018 04:41:12 GMT

The CTS/RTS are for flow control. It only actives when there are too much traffic on the line and either end could not keep up with the data rate. It will ask the other to stop transmitting and wait for it. Without CTS/RTS it will just drop the data any data that it could not handle.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sun, 29 Jul 2018 02:47:46 GMT

Oh thanks a lot for your help. Your first solution worked right away. i connected the TX and RX to an FTDI board and i got the data working right away. In fact we dont need the connection of the CTS and RTS in such a case? i connected them too to the FTDI but it doesnt make any difference. the Module communicate perfectly with the terminal, with or without CTS, and RTS connected.

I will investigate your second solution. this looks convenient to use the same connection to both flash and communicate.

thank you so much. this is the answer i needed to move on. Very useful

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Nguyen Hoan Hoang — Sat, 28 Jul 2018 11:42:16 GMT

Connecting the external module to the DK uart is a no go. There are 2 solutions for you.

- First solution : use the FTDI breakout board for the uart to usb bridge. Part number UMFT234XF. With this you still need the DK for flashing and the UMFT234XF for uart to PC.

- Second solution use the IDAP-Link CMSIS-DAP Debug JTag. You can do both flashing and uart to usb bridge all in one. This option, does not work with Segger Studio but you can use it with any other IDE Eclipse, Keil, CrossWork... including Arduino IDE. There is a setup procedure here https://github.com/sandeepmistry/arduino-nRF5 for Arduino.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sat, 28 Jul 2018 11:20:07 GMT

Hi Martin.

I think I need help on your first point . I am not sure i know how to connect a module to the board nfr52-DK. to play with the example ble_UART i flashed on the external module. Here is what i need to know to move on:

My Question is really pragmatic: how to connect my external module to send and receive text it Using Termite

The documentation of the DK is not mentionning that how to play with the ble_UART but how to flash it ( i did that already). I am reading all kind of post related to that

such as https://devzone.nordicsemi.com/f/nordic-q-a/17706/uart-communication

honnestly i have been spending more than one month on trying to use your technology and after purchasing: the DK-nrf52, Keil, I really dont intend to buy a scope just to play with a simple module connected to your board and see if the text i send from my app is read by the module flashed with your own example from your sdk v15?

Thanks for your understanding.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Martin Lesund — Mon, 23 Jul 2018 13:39:12 GMT

Hi Philippe,

- Please confirm that you have connected the correct pins to each-other like described in the manual.

- Check that there is actually communication between the boards by checking with a scope.

- Flash a simple UART example to test that you can echo the messages to the custom board.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Fri, 20 Jul 2018 07:55:50 GMT

Dear Martin, I am still connected to the external module the way i connected it for flashing it. It is not on P19 but P20 (which should be the same i guess). I did set Termite the way that is said into the documentation here, since it works perfectly with the module on board but not the external one

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Martin Lesund — Thu, 19 Jul 2018 08:39:01 GMT

Hi Philippe,

How are you connected to the external nrf52832 module with the nRF52 DK?

If you are you using the "debug out" (p19) on the DK, you should be able to communicate with the module with CDC-UART.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Tue, 17 Jul 2018 15:56:40 GMT

Hi Martin. Thanks again for your help. I made the UART properly thanks to your link.

What still doesnt work is to communicate with an external nrf52832 connected to the DK-nrf52. Doest Termite communicate to the external nrf52 module that way?

The connection is working fine between the module and the phone. i can see the app sending text. but Termite receives nothing. Is it possible actually to communicate through the DK-nrf52 and an external nrf52832 connected to it ?

Thanks also for the Nordic document regarding the Guide to develope with Segger embedded studio. I really like this IDE.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Martin Lesund — Tue, 17 Jul 2018 08:56:26 GMT

You should be able to send and receive messages if you follow what is described here:
- Testing with a mobile device

I would also recommend you to check out this updated Getting Started Guide for developing with SEGGER embedded studio

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sun, 08 Jul 2018 01:33:38 GMT

Dear Martin, I found out that the UART from the nRF Toolbox can also send command when you slide the first panel on the right. but unfortunately it works also one way only like the nRFUARTv2.0 i tried earlier

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sat, 07 Jul 2018 16:45:14 GMT

oh sorry i forgot to comment your advise :"You have the UART app in the nRF Toolbox app which you can use instead of the deprecated "nRF UARTv2.0"."

actually i do have the UART app in the nRF Toolbox app, but it really doesnt look like a terminal

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sat, 07 Jul 2018 16:39:28 GMT

Dear Martin

Thanks again for your help.

I am glad if my questions have been helpful to point out something to correct into the documentation.

Regarding the two ways communication. Unfortunately it doesnt look like working on my side . please find three pictures here:

1/ the termite's terminal showing the type of message send from the phone and message sent from my computer

2/ 2 screenshots regarding the information available on my phone.

Thanks for the links regarding the code from the app. this will be very useful.

Warm regards

Philippe

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Martin Lesund — Tue, 03 Jul 2018 12:59:35 GMT

Hi Philippe,

Your experience is expected. The nRF Connect app has been updated after the "testing" text in the documentation.

Before you could send hex, but now if you send "01234" you would get "01234" on the other side. So the documentation is outdated.

If you swipe right, you should get up the "terminal" log window in 'nrf Connect' app, so you can see what you send from your computer to the device.

(so it works both ways)

similar to this:

For your last question:

You have the UART app in the nRF Toolbox app which you can use instead of the deprecated "nRF UARTv2.0".

The source code and documentation can be found here:

Android (uses Android studio IDE)
iOS

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Mon, 02 Jul 2018 15:06:26 GMT

Hi Martin, this is the kind of information that are very helpful for a beginner. thanks. I use termite and configure as mentionned on the example documentation. i connected with nRF Connect or nRF Toolbox on my android phone. It connects perfectly. I have differencies with the documentation though. if write 30 31 32 33 ... either in nRF Connect or nRF Toolbox, i see the same text appearing in Termite (running on my PC). it is said i should read 123 ...

Then, the text i wrote into termite never appeared on my nRFconnect or nRF Toolbox. is there a specific set up to get the communication bi-directional? thank you

One more question: (on the top of all above working perfectly: bi-directional text), the only thing i would need to do is a similar app to the nRF UARTv2.0 for Android and IOS.. Does it exist a documentation on this app? What IDE is used to write such an app? is there a source code somewhere or information?

Sorry for so many questions. I wish there was low level video tutorial for people like me. ;-(

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Martin Lesund — Mon, 02 Jul 2018 07:53:51 GMT

Hi Philippe,

Please use the app referred to in the example documentation.

On the Android side you can either use "nRF Connect" or "nRF Toolbox".

On the PC side you can use your prefered serial terminal. (I like to use "termite")

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sun, 01 Jul 2018 19:37:28 GMT

Dear Martin

I compiled and flashed ble_app_uart on the DK-nrf52 but i cannot connect using any terminal. i am using the "bluetooth terminal" for Android. i am using a Huawei Y7. What UART terminal would you advise me to use. I am getting really lost with so many troubles just to use your examples.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sat, 30 Jun 2018 05:46:42 GMT

that would be the idea solution finally. I need to check what i need to buy for that though. thank you

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Toyman — Thu, 28 Jun 2018 13:41:59 GMT

You might consider Arduino core for nrf52832. Best of both worlds

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Thu, 28 Jun 2018 09:07:26 GMT

Hi Martin, thanks a lot for this detailed answer. Sorry for my late response. I have bought a nrf52 DK it works perfectly with the chip on board. but there are some issues with the Holyiot 17095 . it flashes it ok, the blinky or any simple peripheral programms are working great on it. but no ble examples works. the devices is shown as a proximity, blinky ble etc... but my phone cannot connect to the Holyiot.

Thanks for the uart, this is exactly what i would need but working on an external module flashed with my nrf52 DK. any ideas of incompatibilities with some modules (since you mentionned holyiot in yout list of provider of nrf52832 modules?)

Ok thanks for you warning regarding the sdk v10, i am using the v15.

the purpose of the module is to controle a small motor with various speed using an app in ble on my phone.

the next step is to programm an app that can controle a ble module. what would be your best suggestion for me to start programming such an app (IOS and Android)

thanks a lot

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Martin Lesund — Tue, 19 Jun 2018 07:32:00 GMT

Hi Philippe,

If you are looking at a pcb with the nRF52832 for prototyping, I would recommend you look at the nRF52 Development Kit which already has a "programming chip" on-board so you can easily flash and debug the chip. (For purchase: buy now)

If you however would like to use nRF52832 modules (as nguyen suggests) you should look at this list for several options and where to buy.

As for your former post, I am sorry but I missed that one.

As a beginner (I agree, do not start out with the proximity example) I would recommend you to instead play with the UART example. Since it is the same as what you requested: "much easier tutorial (like for arduino), where you just connect to the device, and send message to it with a terminal. "

If you want to play with BLE you can look at the "ble_app_uart" example.

Do not use SDK v10 if you are starting out. It is an old SDK. Please use the latest version (SDK v15).

And what are the purpose of those shields you are describing?

(here are some older tutorials, which can be useful)

(but I recommend the ones made by bjorn, especially this one and also this)

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Sun, 17 Jun 2018 05:29:37 GMT

thanks, i will try to make my module work first because i bought a bunch of them. I will buy one of yours if i can not find a solution with mine. Some works, some dont.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Nguyen Hoan Hoang — Fri, 15 Jun 2018 12:09:20 GMT

There are nRF52832 modules here with full software support.

RE: flashing problem with some nrf52832 shields using the DK-nrf52

PhilippeG — Fri, 15 Jun 2018 09:08:40 GMT

Hi Martin, thank you so much. the compiling is indeed really easy with Segger Embedded Studio. I will see if the flashing is working ok. I hope the flashing of the components i bought in China will also work. I am worried about that because i dont know where else i can buy ready made pcb using the nrf52832? i am not ready to create my own pcb before i am familiar with the prototyping workflow.

Have your read my former post? do you have any idea why the flashing of the components is working but the second component is rejecting the pairing?

thanks

RE: flashing problem with some nrf52832 shields using the DK-nrf52

Martin Lesund — Wed, 13 Jun 2018 11:17:13 GMT

I would recommend you to get Segger Embedded Studio (Nordic provides free licence)

It is a great IDE and all of our examples in the SDK has SES support "out-of-the-box".

We also have a tutorial series with SES

(This is also mentioned in the link in my first post)