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Full Discussion: Writing to a Serial Port
Top Forums Web Development Writing to a Serial Port Post 302922143 by wisecracker on Wednesday 22nd of October 2014 04:49:34 PM
Old 10-22-2014
Right, you have in theory __proven__ your serial port is working; now give us a detailed description of what you intend/or_have connected to it, (e.g. modem, Arduino, etc)...

Turn off all flow control FTTB as this will rspond as a 3 wire, (possibly 2 wire with mods), system.

I am not sure if you require 8 bit data but if so set (E) to 9600 8N1, 9600bps, 8 bits, No parity and 1 stop bit. Remember RS232 by default is an NRZ device so 9600 is about the limit of reliable _error_free_ speed without some form of flow control.

Note:- HW I can help with remote networking is more the domain of the professionals on here.
 

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HCIATTACH(8)						    Linux System Administration 					      HCIATTACH(8)

NAME
hciattach - attach serial devices via UART HCI to BlueZ stack SYNOPSIS
hciattach < tty > < type | id > [ speed ] [ flow ] DESCRIPTION
Hciattach is used to attach a serial UART to the Bluetooth stack as HCI transport interface. OPTIONS
<tty> This specifies the serial device to attach. A leading /dev can be omitted. Examples: /dev/ttyS1 ttyS2 <type | id> The type or id of the Bluetooth device that is to be attached, i.e. vendor or other device specific identifier. Currently supported types are type description any Unspecified HCI_UART interface, no vendor specific options ericsson Ericsson based modules digi Digianswer based cards xircom Xircom PCMCIA cards: Credit Card Adapter and Real Port Adapter csr CSR Casira serial adapter or BrainBoxes serial dongle (BL642) bboxes BrainBoxes PCMCIA card (BL620) swave Silicon Wave kits bcsp Serial adapters using CSR chips with BCSP serial protocol Supported IDs are (manufacturer id, product id) 0x0105, 0x080a Xircom PCMCIA cards: Credit Card Adapter and Real Port Adapter 0x0160, 0x0002 BrainBoxes PCMCIA card (BL620) <speed> The speed specifies the UART speed to use. Baudrates higher than 115.200bps require vendor specific initializations that are not implemented for all types of devices. In general the following speeds are supported: 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 Supported vendor devices are automatically initialised to their respective best settings. <flow> If the keyword flow is appended to the list of options then hardware flow control is forced on the serial link ( CRTSCTS ). All above mentioned device types have flow set by default. To force no flow control use noflow instead. AUTHORS
Written by Maxim Krasnyansky <maxk@qualcomm.com> man page by Nils Faerber <nils@kernelconcepts.de> BlueZ Jan 22 2002 HCIATTACH(8)
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