How does one access an FTDI USB to serial adaptor, as a serial port in the RPi port of RISC OS?
I know there is supposed to be FTDI serial support in the USB stack, though I do not know how to access it from a program.
I am redoing my 3D printer firmware, which uses a RPi running RISC OS as the controller, and is written 100% in BBC BASIC V. This update is to take advantage of the fact that the newer Raspberry Pi systems have more GPIO pins available (thanks to the larger 40 pin header), so less support HW is needed. I intend to make a public release once I have the update done, and tested.
The trouble is that I need a way to read the thermistor to gauge the tempurature of the print head, for this I am using a Sigma Delta ADC by way of a Parallax P8X32A (Propeller) MCU, and sending the data over serial, though I would prefer to be able to keep the serial port on the RPi header open for other uses if possible. It is to bad that there is no good way to implement a sigma Delta ADC on the RPi header directly, and the RPi does not have an analog input for the job .
Thank you in advance.