Raspberry Pi Forums

Hi all,

I want to enable Bluetooth Low Energy feature on my Raspberry Pi A which only has one USB port. I have been happy with CSR4.0 BLE USB adapter (such as this one http://www.amazon.com/BATTOP%C2%AE-Blue ... rds=csr4.0) on my Linux. However, the only USB port is occupied by a wifi adapter, and I don't want to attach a USB hub. So there are basically two ways of doing this:

1. Build a USB to GPIO interface so that Rapsberry Pi can talk to a BLE USB dongle via SPI or UART.
2. Build a central role BLE module which talks to Raspberry Pi with SPI or UART.

I want to do things quickly, but I am not sure if I can do either easily. Can anyone shine some light on this problem?

Two ideas come to mind:

Someone on this forum at some time mentioned wifi devices that are attached via some oof the ther interfaces than usb. I recall that the device mentioned in that context was relatively cheap (I think the price quoted was 7€). They were considering using it on an A+. I can't remember who or where, but if you search you could find the post. If you were to use such a device, then the USB-port would remain free for a CSR usb-bluetooth dongle.

EDIT: found it:
http://www.raspberrypi.org/forums/viewt ... 39#p673539


Another way might be to use one of these things:

http://www.raspberrypi.org/forums/viewt ... 45&t=51924