nRF UART App

RE: nRF UART App

Christopher — Mon, 21 Mar 2016 21:28:22 GMT

@hungbui this is a quite old answer and the "Bluetooth Accessory Design Guidelines for Apple Products" document is from 2013. Are these connection interval requirements still valid ?

RE: nRF UART App

Ole Morten — Wed, 02 Apr 2014 07:21:25 GMT

This application is now included in the regular SDK releases, in nrf51822/Board/pca10001/s110/experimental/ble_app_uart. Please use the one there instead of the zips attached here, since neither of these have been updated to work with anything later than SDK 4.4.2.

RE: nRF UART App

Gili Elias — Fri, 01 Nov 2013 10:53:18 GMT

Hi Powen,

FWIW, I'm using iOS7.0.3 on an iPhone 5 with the latest SDK and nRF UART without any issues for a few weeks now and it's quite stable. only issue with it is it only connects to one BLE device and doesn't present a menu to select if you have a few (anyone sees differently?).

try the ble_app_uart.zip I posted above, it used SDK4.4.

Gili

RE: nRF UART App

Powen Ko — Thu, 31 Oct 2013 17:50:26 GMT

How come RX is not working again..... I use below to testing the Code, #. iOS 7.0.3 #. iPad Mini #. nRF UART version 1.0.1 from apple store, #. SDK is nRF51 SDK_v4.4.1.31827 #. ble_app_uart_sdk4.3_DevZoneFix.zip (Hung Bul release on July 19 2013)

Have any one has been working to send and receiver data between?

RE: nRF UART App

Gili Elias — Thu, 17 Oct 2013 10:27:51 GMT

yes, /r would work good I think. \n indeed doesn't work on all terminals b/c most terminal translate the keyboard enter to /r

RE: nRF UART App

aaronxu — Thu, 17 Oct 2013 10:19:24 GMT

Why I used '\r' to match the end of the strings is worked? '\n' not work.

I have tested SecureCRT and Putty console.

RE: nRF UART App

Rich — Wed, 16 Oct 2013 21:49:50 GMT

Just to clarify, are you saying the the upgrade to iOS 7.0.2 resolved your issue?

RE: nRF UART App

Bastiaan — Mon, 14 Oct 2013 23:56:21 GMT

Hi! Gili Dear Gili

Thank you, it is working great on iOS 7.0.2 with your ble_app_uart source code and "nRF UART ver 1.0.1" app from apple store, RX/TX both are working good on iPad, you totally save my product, my company, and also save my job and life...... thank you very much, appreciation. Powen

RE: nRF UART App

Guest — Mon, 14 Oct 2013 23:56:21 GMT

Hi! Gili Dear Gili

RE: nRF UART App

Kent Johansen — Mon, 14 Oct 2013 13:07:45 GMT

Yes, I noticed a fix came through on the iPad last night. That works .. Kent

RE: nRF UART App

Gili Elias — Mon, 14 Oct 2013 12:41:52 GMT

Hi, sorry yes the iOS app version is 1.0.1.

I attach the ble_app_uart_code I'm using. it was built using SDK 4.4 and has two changes: 1) use the connection timeout (MAX/MIN_CONN_INTERVAL) recommended for iOS on this or a similar thread and 2) added some code enabled by LOOPBACK define during build to echo the message received from the normal UART back to the ble_UART. this enables an easy quick check that all is working, the normal UART to/from ble_UART also works fine for me.

hope it helps

Gili

ble_app_uart.zip

RE: nRF UART App

Guest — Mon, 14 Oct 2013 12:27:59 GMT

sorry typo, iOS code is running "nRF UART ver 1.0.1" app from apple store, which ble_app_uart code is running on nRF51822 ?

RE: nRF UART App

Bastiaan — Mon, 14 Oct 2013 12:27:59 GMT

sorry typo, iOS code is running "nRF UART ver 1.0.1" app from apple store, which ble_app_uart code is running on nRF51822 ?

RE: nRF UART App

Guest — Mon, 14 Oct 2013 12:05:35 GMT

Hi! Gili Elias, thank you so much, I just download "nRF UART ver 1.1" app from apple store, unfortunately, my iPad mini (7.0.2) still cannot get RX data, Where did you get the "ble_app_uart code"? maybe my nRF51822 code is not correct, by the way , SDK is nRF51 SDK_v4.4.1.31827.. thank you again.

RE: nRF UART App

Bastiaan — Mon, 14 Oct 2013 12:05:35 GMT

RE: nRF UART App

Gili Elias — Mon, 14 Oct 2013 11:48:11 GMT

I'm using the ble_app_uart code with the nRF UART 2.0 just made available on app store yesterday for iOS7 (I'm using iOS 7.0.2) and both RX/TX are working great. try the app store...

RE: nRF UART App

Powen Ko — Mon, 14 Oct 2013 09:38:36 GMT

I use below code to test iOS 7.0.2 #. ble_app_uart_sdk4.3_DevZoneFix.zip (Hung Bul release on July 19 2013) #. nRF UART App v1.0.1
so far only working, iOS device send UART data to nRF51822 Evaluation Kit, but iOS cannot get any UART data from nRF51822 Evaluation Kit,

Have any idea to fix this problem?

RE: nRF UART App

Kent Johansen — Thu, 10 Oct 2013 19:36:00 GMT

Reinstalling the nRF UART 2.0 app somehow worked and I am now going forward again. The app may have gotten confused by my attempt to combine UART with BLE and HRM. It is likely it recognized the device and loaded some data which was not good. I will post if I get any wiser. Kent

RE: nRF UART App

Kent Johansen — Thu, 10 Oct 2013 19:19:50 GMT

That all worked well .. and THEN

I don't recollect changing anything, but suddenly I have no hole through any of this. Thanks for the dev zone fix version of the UART firmware .. it worked well for a little while - except the iOS7 could not transmit to it.

My firmware based on the UART (on my own nRF51822 design board) worked until this morning, two ways, then "something happened". I have gone back to earlier working versions, I have reinstalled latest nRF51 SDK etc. No go. I then reinstalled nRF UART 2.0 on my Nexus 4, which has worked brilliantly so far. That caused nRF UART (on Android) to report that the device does not support UART, disconnecting. I flashed the app into 15 boards two days ago, they can't connect to the Android app either, now. The iOS7 can as usual receive from them, but not transmit.

This is madmaking... any experience, fixes, anything???!?!?!

Kent

RE: nRF UART App

Ole Morten — Tue, 08 Oct 2013 06:26:12 GMT

Please see this question: https://devzone.nordicsemi.com/index.php/ios7-ipad2-nrf-uart-app-can-t-send#reply-1738

RE: nRF UART App

Gili Elias — Mon, 07 Oct 2013 11:51:33 GMT

Hi, I tried this today and I see the code is still using 6130 leds/buttons etc' changed that and working with nRF UART app on iOS7 I see advertising and connection LEDs OK, but as soon as I try to send something from the app, the app crashes... any idea? using MCP I see the UART services for RX/TX are up so looks like an app issue or conn params issue?

Thx

Gili

RE: nRF UART App

Bastiaan — Fri, 02 Aug 2013 18:11:41 GMT

Hi Alec.

The project was designed for the nRF6310. I had to remove the BOARD_NRF6310 preprocessor symbol and added the following symbols: NRF51 NRF51822_QFAA_C0 BOARD_PCA10001.

I also needed to change the target memory area values on the chip. I changed the Start and Size of IROM1 to 0x14000 and 0x2C000 respectively, as well as the same properties on IRAM1 with 0x20002000 and 0x2000 respectively.

You may want to change line #50 in main.c to #define WAKEUP_BUTTON_PIN BUTTON0

Cheers. Alex

RE: nRF UART App

Guest — Fri, 02 Aug 2013 18:11:41 GMT

Hi Alec.

The project was designed for the nRF6310. I had to remove the BOARD_NRF6310 preprocessor symbol and added the following symbols: NRF51 NRF51822_QFAA_C0 BOARD_PCA10001.

You may want to change line #50 in main.c to #define WAKEUP_BUTTON_PIN BUTTON0

Cheers. Alex

RE: nRF UART App

Hung Bui — Fri, 19 Jul 2013 06:54:36 GMT

Please see the updated version of this example to use with iOS devices to avoid the disconnection after 30s.

RE: nRF UART App

Hung Bui — Fri, 19 Jul 2013 06:53:12 GMT

The ble_app_uart-sdk4.3 example that Ole Morten gave may not be compatible to use with iOS device since the MIN_CONN_INTERVAL and MAX_CONN_INTERVAL were not match with the requirement from Apple as described here

The iPhone will be disconnected with the device after 30 second when the connection parameter request sent from the device is not being accepted by the phone.

You would need to increase MIN_CONN_INTERVAL to at least 16, and MAX_CONN_INTERVAL to at least 32.

If you use the device with any other host that has different requirement, you would need to modify the connection parameter accordingly.

Here is the modified version to use with iOS devices:

ble_app_uart_sdk4.3_DevZoneFix.zip