Sharp PC-G850VS

[silven]

(06-07-2021 09:30 PM)robve Wrote:  

(06-07-2021 05:00 PM)silven Wrote:  Do you have a solution for getting data in and out?

SIO with FTDI. I assume you've read section "USB PC Adapter Cable with Hardware Handshake" with DIY instructions. Watch the UART-TTL signal levels of the PC-G850V. DIY SIO/PIO is best.

So I got an FTDI cable and was able to reflash it to use the inverted signals that the 850 uses. I can send information to the 850 just fine, but when I want to send from the 850 to my PC it blocks and sends nothing.

I'm guessing that it has something to do with flow control. My ftdi cables doesn't break out lines for CTS/RTS, so I just disabled flow control, but it looks like its waiting for something. I'm betting it's something as simple as applying 5v to CD or something like that, but I don't want to start tossing 5V randomly at those pins for fear of breaking something. Any input would be much appreciated.

zmc