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Would that still work with USB → Parallel convertors?
by notRobot 4y ago
Would that still work with USB → Parallel convertors?
- 0xcde4c3db 4y agoI believe there are some rare adapters that will work with custom drivers, but almost all of them I've seen are programmed specifically to provide a printer device.
- RobotToaster 4y agoMost seem to very specifically be IEEE 1284 adapters, rather than actual hardware parallel ports.
- 0xcde4c3db 4y agoIEEE 1284 is the relevant standard for "modern" (ECP/EPP) parallel ports, but most adapters only provide that interface on the printer side, not a general-purpose host-side interface to control an IEEE 1284 port.
- mikepavone 4y agoECP and EPP are not really useful for GPIO-style use and even the simpler modes are not really desirable if the adapter is implementing the handshaking in hardware. You really just want to be able to manually control all the bits. The original parallel port (and later integrated ones when set to an appropriate mode in the BIOS) allowed this because it was a very simple device and relied on software to handle things like toggling the data strobe line when a byte was written to the data lines.
- sobkas 4y ago> Would that still work with USB → Parallel convertors? I use FTDI 232h based devices to drive 433Mhz transmitters, using gpio/bitbang functionality. There are multiple pins that can be used for that so theoretical parallel port like functionality can be achieved.
- bsder 4y agoAs much as FTDI annoys me, simply buying something like a 232H development board was my first thought, too.