nrf51822 serial communication using cable

[sachin.singh]

Hi All,

I am working on the NRF51822 development board, using KEIL-IDE for the code development using SDK version 10.

I was trying to develop the serial communication with NRF-51822 development kit using Putty for normal serial communication via cable(not using wireless blue-tooth).

Please guide me for the above. And if possible than share some of the details or document if available for the same.

Looking forward for the replies.

Thanks in advance

[awneil]

So what have you tried so far?

Where are you stuck?

Have you looked at the SDK examples?

See: devzone.nordicsemi.com/.../162070

[sachin.singh]

I have tried the FTDI-232 pin connections for serial communication with the available SDK-V10 example ble_app_uart. 

I am using BLE400 with NRF51822 and flash program using J-Link debugger. After that I connected the board with FTDI-232(TX - P0.06 & RX - P0.05) and I have didn't connected the CTS and RTS for the communication.

#define RX_PIN_NUMBER  5
#define TX_PIN_NUMBER  6
#define CTS_PIN_NUMBER 7
#define RTS_PIN_NUMBER 12
#define HWFC           true

And I have also gone through your link and change configuration but still its not working.

I am connecting the BLE400 Board with USB cable and as well as with FTDI-232 to PC, So, is have connect only one module at a time ... like say we have to give power from the FTDI-232 on 3.3V pin only ? Am I right. 

If any possible solution is their share and guide through it.

Many Thanks

[awneil]

sachin.singh said:

I have tried the FTDI-232 pin connections for serial communication

sachin.singh said:

I am working on the NRF51822 development board

Doesn't that board have a built-in USB-to-UART converter?

EDIT

https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF51-DK

[sachin.singh]

Hi,

First of all I am, using this (BLE400), not mentioned in the above link of yours. And Board was connected with NRF-51822 BLE module.

Right Now I have/After changing the Pin numbers in "pca10028.h" file and also in the "nrf_drv_uart.h" file with RX and TX pin which are sourced from the BLE400 schematic pdf file. And I have changed the baudrate from 38200 to 115200 for my case.

Now after making all the changes and connecting it to the FTDI-232 to the BLE400 board(using TX, RX and GND) and firing the Putty I was able to open the serial connection of it but unable to print any data or character to the terminal. Actually I need to develop the UART to PC communication.

So can you share me the possible solution.

Thanks

[awneil]

sachin.singh said:

First of all I am, using this (BLE400)

And how was anyone supposed to know that? We are not ind readers!

I would strongly suggest that you do get the Nordic kit - because then the examples come ready-to-use. and Nordic are able to support you.

It also comes with an on-board J-Link debugger.

Once you have gained sufficient experience & familiarity on the Nordic kit, you will be in a position to know how to set up this other kit.

sachin.singh said:

using TX, RX and GND

Your earlier post shows that you have enabled hardware flow control - so you will also need to connect the handshaking lines, and ensure that you have PuTTY correctly configured 

[bjorn-spockeli]

Try setting HWFC  to false and see if that helps. 

[sachin.singh]

Hi,

I have successfully completed it ... 

I had made changes into the macros as per the Rx, Tx and Disabled the Hardware flow control.

Then I was able run serial communication using putty. 

Thanks Very Much Nordic & Support Team ...