NRF52832 bit band uart problem 19200 baudrate

RE: NRF52832 bit band uart problem 19200 baudrate

rbelli — Thu, 21 Oct 2021 18:54:28 GMT

Hello

Have you updated this for the new SDK?

Thanks

BoB

RE: NRF52832 bit band uart problem 19200 baudrate

David Edwin — Wed, 09 Jan 2019 13:49:31 GMT

Finally released with sample code and test results, apologies for the delay we had some bugs and the holidays that prevented the release.

(See attachment in the suggested answer)

RE: NRF52832 bit band uart problem 19200 baudrate

Prajapati — Tue, 27 Nov 2018 15:38:21 GMT

Thanks for your quick response.

Please consider as a gentle reminder. Did you complete the process that you mentioned in previous reply? It would be great if you can share the sample code. Appreciated for your response.

Thanks,

Hasmukh

RE: NRF52832 bit band uart problem 19200 baudrate

David Edwin — Wed, 21 Nov 2018 14:39:11 GMT

We are in the process of documenting and getting this out to you. We are hoping it should be out this week. We will keep you informed.

Edit: Added the first release with basic test data for 19200 baud , appears to be stable after a 14 hour loopback test

Edit: Deleted v0_1.1 and added v0_2.1, v0_2.1 has additional documentation and test reports

devzone.nordicsemi.com/.../nrf_5F00_vt_5F00_0.2.1.zip

RE: NRF52832 bit band uart problem 19200 baudrate

Prajapati — Wed, 14 Nov 2018 09:30:28 GMT

Thanks again,

Our connection interval is from 0.5 sec(min) to 1 sec(max) . Our advertising interval is 40 msec.

Yes its sufficient for example without hardware flow control. It would be nice if you can send the basic example with 19200 baudrate.

RE: NRF52832 bit band uart problem 19200 baudrate

David Edwin — Tue, 13 Nov 2018 10:25:03 GMT

We can provide a basic example to use the PWM for UART TX (no hardware flow control), is that sufficient ?

Can you mention the advertising interval that you are using and the connection interval you are using ?

RE: NRF52832 bit band uart problem 19200 baudrate

Prajapati — Tue, 13 Nov 2018 06:50:59 GMT

Thank you for your quick reply,

Our SDK version is 15.0 and soft device version is s132_nrf52_6.0.0 .

Our BLE is connected to mobile application and we are sending and receiving the data continuously.

In our application we just need to send the the data using software uart.

Can you tell me how to use PWM with ezDMA for UART transmission?

RE: NRF52832 bit band uart problem 19200 baudrate

David Edwin — Mon, 12 Nov 2018 09:57:02 GMT

Can you mention the SDK being used and the softdevice version in use.

What kind of radio activity are you doing when running the UART ?

19200 is about the max possible with a bit banged UART when the RADIO is running, a better way could be to use the SAADC for UART RX and PWM for UART TX.

Using the SAADC and PWM with ezDMA will reduce real time needs on the CPU.