DTR-based PC to SX flow control is now enabled and working, thanks to jd2xx. It has been tested, and SX responds appropriately to a STOP request. Strangely, with the new jd2xx code, it doesn’t appear that flow...
Archive - October 2007
changed from rxtx to jd2xx
Okey dokey. I’ve changed from rxtx to jd2xx. rxtx didn’t support DTR/DSR flow control, which really is an absolute must for my application. There would have to be hardware changes that I’d be...
Flow control
I’ve gotten away thus far without any flow control. I just started noticing that my software was locking up occasionally when reading a disk. It was locking up in the “read” portion of the code because...
basic schematic
I put up a rough schematic of my design. It’s not perfect, and will be updated in the near future, but if you are interested.
Click the image below for a full size image.
heat problems
As I alluded in an earlier post(s), my SX28 has been pretty warm. After doing a number of different tests, I’ve now ordered an infrared thermometer from amazon for $29.99. I want to find out exactly how hot this...
data rate vs throughput
Although I’m transmitting from the Parallax SX microcontroller to the PC via USB at a data rate of 2mbps, the actual throughput is much less. First, there is some overhead, namely start and stop bits, which is...
RXTX and Java
As I mentioned before, I’m using RXTX to do serial communication in Java since Sun has dropped support for serial communication under the Windows platform. I want to revamp my read routines on the java side...
java software updated
Tonight I’ve finally got around to adding a config file option so that you don’t have to keep selecting a comport to open. It also remembers your “number of retries” before skip options. Simply...
