I don't know anything about MS-Windows, but Aaron Jones sent me this informationĪbout loading EZ-USB firmware under Windows.Įnough talk, let's see some blinking lights! This information out here where it might do someone some good. The fact that this dongle can probably be made into a simple andĮffective USB prototyping platform is really cool, and I want to get Should be trivial, but remember they use 3.3v logic levels. Hackability, the spare I/O pins (most of port B) are brought out toĮxtra solder pads on the board. Theīoot EEPROM is attached to SCL and SDA, as you would expect. The RS232 lines go through the RS232 driver/receiver andĬonnect to UART and general-purpose IO pins on the EZ-USB chip. The USB linesĬome in, go past a SN75240 transient suppressor, and connect to theĮZ-USB chip. The design of the adaptor is very straightforward.
#Keyspan for mac driver serial
But what I'm interested in is not using this as a serial adaptor, but as using it as a relatively cheap ($40) USB experimentation platform. Mailing list (instead of procmailing it all into a file I never read), I'd haveĬustom firmware for the dongle to talk to the Linux kernel. Of course, if I'd actually been paying attention to the linux-usb The 8051 has 8K of RAM and runs at 24 MHz. USB port, and a 16-byte EEPROM to store Keyspan's USB The other ICs on the board are a transient suppressor for the USB-enabled 8051-compatible microcontroller, plus a level shifter for RS232 TI 75LV4737A! A few minutes with an ohmmeter and I'd traced out all the interesting connections (see below).īasically, the Keyspan USB adaptor is a general-purpose reprogrammable I popped the plastic case, what to my startled eyes should appear but Hacker's desire to take things apart and see how they work. Not for any particular reason I simply succumbed to the Linux with only brief adventures into MacOS, the dongle has been sittingĪ little while ago, however, I became curious about the contents of
Include a Linux driver, the bastards, and since my Powerbook runs Presumably to speak some special protocol to it.
#Keyspan for mac driver driver
Standard USB serial profile it requires a driver to initialize it and Much to my annoyance, this dongle doesn't implement any sort of Keyspan USB-to-DB9-serial adaptor dongle. Wallstreet), but there are plenty of peripherals out there that still
Is a good thing (which is why I bought a Lombard instead of a Serial port for a couple of shiny new USB ports. I own a Mac Powerbook G3 Lombard, which forsakes the decades-old async Hacking the Keyspan USB Serial Adaptor Those annoying nonportable USB devices.
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