UART SDK migration 8.1.0 -> 10.0.0

RE: UART SDK migration 8.1.0 -> 10.0.0

MartinBL — Tue, 08 Dec 2015 08:42:20 GMT

Hi,

The app_uart library was changed between SDK 9 and 10. The uart libraries are now using the nrf_drv_uart drivers. The update introduced a bug in app_uart_fifo.c which prohibits the library to recover from an error state. Please try the attached patched app_uart_fifo.c file. The issue is reported and will be fixed in the next SDK release.

app_uart_fifo-patched.c

RE: UART SDK migration 8.1.0 -> 10.0.0

Nguyen Hoan Hoang — Sat, 05 Dec 2015 14:38:43 GMT

I also observed similar issue. Switching to SDK10, UART no longer works. I haven't have time to investigate. I went back to SDK9 everything is fine.

RE: UART SDK migration 8.1.0 -> 10.0.0

Eliot Stock — Fri, 04 Dec 2015 17:34:33 GMT

Correct. Not using hardware flow control (params.flow_control = APP_UART_FLOW_CONTROL_DISABLED). I'll create a case. Thanks.

RE: UART SDK migration 8.1.0 -> 10.0.0

MartinBL — Fri, 04 Dec 2015 15:54:04 GMT

Ah, ok, so you have one board, with one nRF51 and two peer devices mounted on it? And you lost com to only one of them?

Then I guess you have routed the UART traces from the peer devices to two separate set of pins on the nRF51, and then you are dynamically reconfiguring the UART to talk to one or the other? Are you using flow control? Do you mind uploading the code? You can submit a support ticket on myPage if your prefer some confidentiality.

RE: UART SDK migration 8.1.0 -> 10.0.0

Eliot Stock — Fri, 04 Dec 2015 15:29:49 GMT

No, just one board. Well, actually, a bunch of them, but I've tested on two of them and have the same result. Everything works if I revert back to SDK 8.1.0. Sending strings over UART. Using S110 v 8.0.0 in both cases. I'm using the FIFO library for both UART connections.

RE: UART SDK migration 8.1.0 -> 10.0.0

MartinBL — Fri, 04 Dec 2015 15:19:17 GMT

So if understand this correctly:

You have two custom boards
Both boards have one external device and an nRF51 mounted on them and they communicate through UART. No communication between the two boards?
They both worked fine with SDK 8, but only one of them works with SDK 10?

So just for the record:

Are you using the exact same components on the boards?
Does the faulty board work if you revert back to SDK 8? I.e. you are sure it's not broken?
What kind of data are you sending over UART? Single bytes or strings?
Are you using a softdevice? If so what version? Are the boards using the same softdevice? I experienced the other day that in SDK 10 certain examples seemed to use the uart_fifo library when using S130, but the regular uart library for S110 (Or the other way around. I don't remember).
What nRF51 revision are you using?