About hardware flow control

RE: About hardware flow control

Kaito — Wed, 20 Dec 2017 09:05:38 GMT

thank you for your reply! ok! i send the question to the closed sopport portal! thank you !!

RE: About hardware flow control

MartinBL — Mon, 18 Dec 2017 12:57:07 GMT

If you want confidentiality you can open a support ticket in our closed support portal MyPage. Note that it is holiday season here in Norway, so the response time might be slow.

RE: About hardware flow control

Kaito — Mon, 18 Dec 2017 12:33:44 GMT

thank you for your reply.

Yes!Is it okay with handwriting? 2.i am using MSP430f5438 of Texas Instruments 3.Yes,but i wanna send Martin Børs-Lind only. so I want to send mail to you. Can I publish your email address?

thank you in advanced!!

RE: About hardware flow control

MartinBL — Thu, 14 Dec 2017 15:22:47 GMT

DTR is not used with the nRF5 family you need RTD and CTS. The RTS on your nRF52 should be connected to CTS on your peer device and vice versa.

Can you post a schematic or image of your current setup?
What MPU are you using?
And can you post your code as @Matt suggests? Preferably as text and not an image. I know the code formatting here is bad, but text is still better than an image.

RE: About hardware flow control

Matt — Wed, 13 Dec 2017 12:43:38 GMT

Can you share your test code with us here?

RE: About hardware flow control

Kaito — Wed, 13 Dec 2017 09:32:53 GMT

Yes,i have connected the CTS and RTS pin. but the rts signal couldn't be output from nRF52832 to external MPU. now i have used the DK of nRF52832. i researched the HWFC,i understood to need the DTR signal. Does it need to send DTR signal from PC to DK of nRF52832? how to send DTR signal to DK of nRF52832? Also,Is it possible to use CTS and RTS pin without using DTR signal? thank you in advanced!

RE: About hardware flow control

MartinBL — Fri, 08 Dec 2017 09:58:46 GMT

Have you connected the CTS and RTS pins correctly?

RE: About hardware flow control

Kaito — Fri, 08 Dec 2017 05:22:32 GMT

thank you for your reply! i modified the uart_init()! but i could not do the hardware flow control. the picture is shown in this below. gyazo.com/973c7ea19887c208cf37ad6833d00d20 gyazo.com/e60dbc0ee0aeaefc279ea24535d21a30

In the second picture, the purple waveform is the RTS signal and the green is the CTS signal. The RTS signal is output from the external MPU, but the green CTS signal can not be received by the external MPU. I do not understand this cause. regards!

RE: About hardware flow control

Matt — Thu, 07 Dec 2017 13:59:27 GMT

Don't understand your question here. Have you enabled uart flow control in your firmware application in the MPU side? Have you enabled uart flow control in the nRF52 application when you call the uart_ini() code in the nRF52832 side?