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Mon, 14 Aug 2006
more camera code tweaks, also a baud rate issue
We've made some additional camera code changes, in part thanks to suggestions by Per Dalgas Jakobsen of the Danish Technological Institute. In particular, some small changes in timing have increased the stability of the connection between the camera and processor, plus when resets occur, they don't clobber the colors. We've also fixed an old bug that caused the camera resolution to always return to 160x128 after a reset, even if it was at a different resolution.
We've posted an updated version at
http://www.surveyor.com/srvdownload/srv1.hex.081406
Just download and save as srv1.hex, and follow the instructions on the SRV-1 setup page for uploading new versions of firmware. Please let us know if you have any problems with this version.
Also, we've posted a new firmware source code snapshot which was used to build this latest version at http://www.surveyor.com/srvdownload/srv-081406.zip
One additional note - we just found out from the XBee radio module manufacturer that the serial interface baud rate of the module is 112400 instead of 115200. Apparently, the ARM7 UART doesn't care about the difference, except when it comes to using the LPC21ISP.EXE firmware loader. Next time you try updating the SRV-1 robot firmware via radio, try
lpc21isp -hex srv1.hex com4 112400 14746
instead of
lpc21isp -hex srv1.hex com4 115200 14746
assuming com4 is the location of your USB radio dongle. Let us know if this makes any difference on the performance of the LPC21ISP firmware transfers.
Posted Mon, 14 Aug 2006 14:20 | HTML Link | see additional stories ...