Dongle USB Errors

[jon]

I have the following setup:

• nRF51 dongle
• connectivity_115k2_with_s130_1.0.0.hex firmware
• Windows 7 PC
• nrf51-ble-driver_win_0.5.0

My app is written in python. Occasionally I will get the following log message:

Error writing to UART, error code: 0x03.

The only wait I've found to recover is to restart the app. I have found this occurs much more frequently when the dongle is connected via an extension cable or a hub.

Any suggestions to prevent this from occurring?

[Øyvind Karlsen]

Hi,

I've had some of the same issues you've faced. Are you using pyserial directly to talk to the device, or are you getting this error from the driver?

Best regards,

Øyvind

[jon]

I'm getting this error from the driver.

[Carles]

Unfortunately there are some issues with the older nRF51 ble driver. My suggestion to you would be to upgrade to the most recent version, which includes certain API changes (since it only works with SoftDevice 2.0.0). It can however be installed with pip.

github.com/.../pc-ble-driver-py

[Carles]

One additional note: make sure to update to the latest J-Link driver version, which will also update the firmware on the J-Link IC