nrf51822 uart question

RE: nrf51822 uart question

Jørgen Holmefjord — Tue, 23 Apr 2019 07:43:04 GMT

Are the pins connected to anything or left floating? If the pins float, they might generate error conditions on the UART lines.

RE: nrf51822 uart question

Siddharth rana — Wed, 17 Apr 2019 19:53:22 GMT

Does directly changing pin number of tx-rx in ble_uart example affect my program.

Since I have tried changing Rx-pin 8 to Rx-pin 24

And tx-pi 6 to tx-pin 25.the previous pin number are for virtual com port.

I run into break condition.can u suggest me some way to over come it.

RE: nrf51822 uart question

DragonAnger — Thu, 06 Jul 2017 00:54:25 GMT

I solve this problem!

I changed pin number in "pca10028.h" in "ble_app_uart"

#define RX_PIN_NUMBER 11 #define TX_PIN_NUMBER 9

#define RX_PIN_NUMBER 5 #define TX_PIN_NUMBER 6

nrf51822 uses different pin USB to UART and wired UART.

Thanks for the comments all of you!

RE: nrf51822 uart question

Jørgen Holmefjord — Wed, 05 Jul 2017 11:13:51 GMT

Which pins are you using for the UART interface? Do I understand you correctly that you are able to send UART messages to/from the nRF51822 device using the USB to UART interface on the BLE400 board?

RE: nrf51822 uart question

DragonAnger — Wed, 05 Jul 2017 00:22:32 GMT

In addition, I tested hardware, and data comes perfectly. I think it's software problem as you said.

RE: nrf51822 uart question

DragonAnger — Wed, 05 Jul 2017 00:01:33 GMT

Thank you for your answer!! Can you give me some information about customizing ble_app_uart? I'm not sure but I think Data receiving is a problem. Is there any difference between UART comunication using usb and UART pin on mother board(BLE400)?

RE: nrf51822 uart question

endnode — Mon, 03 Jul 2017 08:56:27 GMT

It looks like you need to customize .\examples\ble_peripheral\ble_app_uart\ example project from Nordic nRF5 SDK in order to receive data over physical (wired) UART and push them over BLE link running Nordic BLE UART Service (NUS).