Problem printing on UART console

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ykovachev
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Problem printing on UART console

Hello,

我am using DA14531 SmartBond TINY™ Development Kit Pro, Keil v5.30.0.0 and SDK6.0.14.

我reference the blinky projec. I am able to build & run it on the board, D5 is blinking in orange, so the code seems to execute on the Development Kit Pro.

However, on the UART console I cannot see any messages, and as I see from the code, I have to see *LED ON* & *LED OFF*

我connect to the UART Console via putty with the following settings (tried both COM3 & COM4): 115200 baud rate, data bits -> 8, stop bits -> 1, NO flow control, parity -> None.

Hardware connections are as described in Figure 27 here:http://lpccs-docs.dialog-semiconductor.com/UM-B-117-DA14531-Getting-Star....

Could you share how to get the uart working?

Thanks,
Yordan

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ykovachev
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Hi,

Hi,

Nevermind, you can disregard this. I managed to get this working using P0_5 configuration, not P0_6 as described in Figure 27 above.

我t seems that Development Kit Pro does not support single wire uart. Is this correct?

Thanks,
Yordan

PM_Dialog
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Hi Yordan,

Hi Yordan,

Thanks for your question and for you interest in our TINY module solution. Please refer toUM-B-139: DA14531 Module getting started Guide (HTML)and Figure 6 : The DA14531 module connected to the DA14531 mother Board. I am using the same jumper configuration and I am able to run the Blink example. The “LED ON” / “LED OFF” message are appeared in my serial terminal.

The Pro-DK supports 1-wire UART. Please see section 9 Programming and debugging interface setup in嗯- b - 141:哒14531 SMARTBOND TINY™ MODULE Development Kit Pro Hardware User Manual.

Thanks, PM_Dialog

ykovachev
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Hi,

Hi,

With the single-wire uart settings J1:19-20; J10:1-J1:15; J10:2-J1:17 I am NOT able to get anything on the UART. However, when I connect J1.17 - J2.27, I see the prints on my UART Console.

Something gets wrong when I connect J1:19-20; J10:1-J1:15; J10:2-J1:17. Any ideas? Perhaps additional pinmuxing in the code?

Thanks, Yordan

PM_Dialog
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Hi Yordan,

Hi Yordan,

Sorry for my late response. Would it be possible to take photo and share it, so that I can check jumpers /wires setup and replicate it in my side?

Did you change anything in the FW side?

Thanks, PM_Dialog

ykovachev
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Hi,

Hi,

Sorry I was OoO.
Attached is the jumper setup I use. Basically I follow the setup described inhttp://lpccs-docs.dialog-semiconductor.com/UM-B-117-DA14531-Getting-Star...

"

P0_5
UART2 TX (Single Wire)

Connect J1.19 – J1.20 Connect J10.1 – J1.15 Connect J10.2 – J1.17

Note On the FCGQFN24 package, P0_5 is assigned to a single wire UART signal RxTx. To enable this on DA14531 PRO-Development kit, three additional jumpers need to be added. SeeFigure 27."

But I cannot see anything on the console.

Thanks,
Yordan

PM_Dialog
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Hi Yordan,

Hi Yordan,

Apologies again for the delay. If you need to use the P0% as UTX, please use a fry wire from J2.26 to J1.17.

Thanks, PM_Dialog

ykovachev
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谢谢你的回复。我

谢谢你的回复。我managed to get through this. User needs to remap the pinmux of the SDK examples to use UART TX on P0_5. Currently it is mapped to a different pin.

We can close this discussion.

Again thanks for the support.

Best Regards,
Yordan

PM_Dialog
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Hi Yordan,

Hi Yordan,

Thanks for let us know - i'll mark the thread a "completed". If you have any follow up question, please raise a new forum thread.

Regards, PM_Dialog