Hello,
I’m develop hw with Q2686 with GPS module linked via UART2, and I would link bluthoot chip(with RS232) via UART3(Q2686 USB), because is necessary use UART1 on Q2686 for debug with OpenAT. Is present a electric schematic to link bluthoot chip via USB to Q2686 ?, is possibile use a FTDI chip to interface bluthoot with Q2686 via USB port ?
the Bluthoot module with SPI is diffucult to find, instead the MAXIC 3100 is a product to interface Bluthoot chip with RS232 and Q2686 with SPI communication.
Should I try the solution with MAXIM IC and I shall know. Thank you
Are you referring to the FTDI Vinculum VNC1L? In that case it´s possible, the Vinculum is a USB HOST, not like the FTDI FT232BM (for example) as Awneil said. But the VNC1L it´s ready by default for reading USB Mass Storage Devices, if you want to use it as a “clean USB-UART converter” you have to set it up… nothing easy. I think an easier solution is to implement your Bluetooth device on SPI with a Maxim IC, as Dave said.
The VNC1 uses a pretty strange SPI format - it’s not really SPI as we know it. I interfaced one to a PIC micro earlier this year, and ended up having to bit-bang the SPI interface as I couldn’t get the VNC1 to talk to the hardware SPI master in the PIC.
The Q26xx doesn’t give you fine enough timing control to bit-bang a SPI interface at any reasonable speed…
All that said, if you do get the VNC1 interfaced to the Q26 via SPI, I’d be interested in knowing how you did it!