Running examples on nrf52840 dongle

RE: Running examples on nrf52840 dongle

FrankBau — Tue, 04 Dec 2018 20:19:19 GMT

Yes, the UART lines were floating. If I do an external loopback by connecting RX and TX lines, or pull RX high, it works. Thanks alot.

RE: Running examples on nrf52840 dongle

Jørgen Holmefjord — Tue, 04 Dec 2018 08:00:34 GMT

Please make sure you follow all steps described in the nRF52840 Dongle Programming Tutorial. Did you connect the UART lines to anything? If you leave them floating, there might be an error detected on the lines, putting the device into the error handler. By default, most examples in our SDK that use app_uart pass the errors to APP_ERROR_CHECK in the UART event handler. If you are using app_uart, you can try to remove this macro, to see if the rest of your code continue executing.

RE: Running examples on nrf52840 dongle

FrankBau — Tue, 04 Dec 2018 06:56:13 GMT

I run into the same issue.

Copied SDK 15.2 example examples\ble_peripheral\ble_app_uart\pca10056 into new pca10059 subfolder, changed board definition to BOARD_PCA10059 (tried both, armgcc and SES) and added pin definitions near the end of components\boards\pca10059.h:

#define RX_PIN_NUMBER NRF_GPIO_PIN_MAP(0,10)
#define TX_PIN_NUMBER NRF_GPIO_PIN_MAP(0, 9)
#define CTS_PIN_NUMBER NRF_GPIO_PIN_MAP(0,24)
#define RTS_PIN_NUMBER NRF_GPIO_PIN_MAP(0,22)

(Tried several pin assignments like 20,17,15,13 too).

Flashing with nRF Connect (Win10) succeeds, but the Dongle seems to crash immediately: no LEDs, no BLE advertising.

Really like the Dongle for prototyping and would like to understand how to get the peripherals used.

RE: Running examples on nrf52840 dongle

WirelessCharging — Mon, 15 Oct 2018 14:44:17 GMT

I'm in the same situation, where I'd like to use the nrf52 dongle with uart configured to GPIOs instead of the USB pins.

RE: Running examples on nrf52840 dongle

Jørgen Holmefjord — Mon, 15 Oct 2018 10:23:54 GMT

Can you elaborate on this statement:

[quote user=""]programming the resulting hex and the softdevice using nrfconnect, it did not work.[/quote]

Does it not work to program the application? Is the application not advertising? Is the data not coming over UART?

Which pins did you configure for UART peripheral? How did you connect UART to PC? Note that there is no Segger Debugger chip on the Dongle, meaning that there is no "automatic" UART to USB interface. If you want to use the USB interface for UART, you need to incorportae something like the USB CDC ACM Example into the application.

RE: Running examples on nrf52840 dongle

NickBle — Sun, 14 Oct 2018 21:01:06 GMT

I need this as well! If I understand correctly the HW UART can't be used on the pca10059 because it's wired to the LED or something? But we should be able to assign other pins to UART, aren't we?

I want to interface the UART to another microcontroller and want to route the UART communication over BLE (and maybe USB). Basically a UART-BLE gateway.