serial connection between nrf52 & arduino

RE: serial connection between nrf52 & arduino

achraf — Tue, 14 Jan 2020 14:46:03 GMT

[quote userid="75734" url="~/f/nordic-q-a/56341/serial-connection-between-nrf52-arduino/228987"]Do you see what is written by the Arduino as well?[/quote]

no i guess i cant because the nrf connected by jlink as i understand from you i should do an usbtouart chip with nrf side and the arduino to the other side, in this case i'll be to see the communcation from both sides.

RE: serial connection between nrf52 & arduino

Simonr — Tue, 14 Jan 2020 10:03:47 GMT

You are able to see the "UART example started" message on the Arduino side. That means that whatever you write from the Arduino, should also appear on that same screen because that is what the UART example does. Do you see what is written by the Arduino as well? The UART example only communicates with the one device it is connected to (the Arduino in your case) and is not connected by UART to the computer in the setup you're describing.

Best regards,

Simon

RE: serial connection between nrf52 & arduino

achraf — Mon, 13 Jan 2020 19:07:50 GMT

[quote userid="75734" url="~/f/nordic-q-a/56341/serial-connection-between-nrf52-arduino/228719"]How is your custom board connected to the computer in your instance? [/quote]

I'm doing it only by jlink and the pins of debuging and downloading the programme .

so please can u guid me to the right point cause it works with arduino . it works for me for the moment the example of the uart send the "UART example started" and im able to see it on the arduino side but when im writing some thing in the serial of arduino how i can see it in the nrf side with SES (any tricks or i should do the usb peripheral )(cause i need communcation full duplex )

RE: serial connection between nrf52 & arduino

Simonr — Mon, 13 Jan 2020 07:44:12 GMT

Sorry, a little mix-up there. Using pins 8 and 6 are what is connected to the COM-port on the DK, but seeing as you're using a custom board, that's likely not the case for you. How is your custom board connected to the computer in your instance? The nRF52832 does not have a USB peripheral, so if you want it to work as a USB device you will have to use a USB-to-UART chip or cable.

Best regards,

Simon

RE: serial connection between nrf52 & arduino

achraf — Fri, 10 Jan 2020 11:22:49 GMT

Hello,
yes that the purpose c send the AT command to the serial By the Nrf . Am not yet able to do that i dont know where is the example or the probleme .

[quote userid="75734" url="~/f/nordic-q-a/56341/serial-connection-between-nrf52-arduino/228476"]The reason you're not seeing anything when using the laptop and PuTTY I'm guessing is because you've set the UART pins to 15 and 17, and these must be set to 8 and 6 in order to print to the COM port.[/quote]

I just changed 8 and 6 , but nothing happend of course , because whats the relation between 8and 6 pin to the usb serial (COM port). Im seeing a blank page on the putty as my previous reply.

RE: serial connection between nrf52 & arduino

Simonr — Fri, 10 Jan 2020 07:08:30 GMT

Sorry about the confusion, it seems like I misunderstood your initial question. So, what you're asking is why you can't see an output on the nRF side of the UART connection when it's connected to an Arduino, correct? The only thing you're able to see is "UART example started" printed to the Arduino console, correct? That is what's supposed to happen, now you should be able to type stuff on your keyboard and it should be printed to the serial device.

If the receiving device is able to process the AT commands written, you should be able to use the UART for this purpose.

The reason you're not seeing anything when using the laptop and PuTTY I'm guessing is because you've set the UART pins to 15 and 17, and these must be set to 8 and 6 in order to print to the COM port.

Best regards,

Simon

RE: serial connection between nrf52 & arduino

achraf — Thu, 09 Jan 2020 10:15:14 GMT

[quote userid="75734" url="~/f/nordic-q-a/56341/serial-connection-between-nrf52-arduino/228304"]Do you not get anything at all printed on your UART terminal? [/quote]

Im talking about arduino console (moniteur serie), putty it dosnet work for me i have a mac

[quote userid="75734" url="~/f/nordic-q-a/56341/serial-connection-between-nrf52-arduino/228304"]Are you using a development kit or a custom board for testing (nRF side)? [/quote]

I'm using custom board
.
btw the answer is little bit far from my question : how it works (am i in the good example for my application[controle the gsm/gps sim868 by serial ])

I just tried putty in my friends laptops nothings happend i cliked on open nothing happend just a blank page
even if im pressing any letter or digit key on the PC keyboard

RE: serial connection between nrf52 & arduino

Simonr — Thu, 09 Jan 2020 09:45:25 GMT

Do you not get anything at all printed on your UART terminal? Are you using a development kit or a custom board for testing (nRF side)? Please check that the UART settings in PuTTY are set correctly, that is:

Baud rate: 115.200
8 data bits
1 stop bit
No parity
HW flow control: None

Best regards,

Simon