On Friday 09 December 2005 07:02, Mukund Deshmukh wrote:
The max232 will generate 5 volt signal (transmit) and could damage serial pins of DSL502 CPU. Use a resistance divider to reduce 5 volt transmit of MAX232 to 3.3 volt. For receive MAX232 'understands' 3.3 signal also.
I already did that but forgot to say so (i have small pcbs with max232 and resistors mounted). Also the TD7300 i/o is 5v tolerant. Nonetheless your suggestion is very correct.
BTW I have already loaded my own file system, with 1MB of free space and thinking what to do next with...
How did u manage the LZMA compression. I have spent the last 20min trying to loop mount the compressed fs. Although it is supposed to be squashfs, it does not seem so. Also changes to the kernel will require recompression in LZMA (well maybe not but that is reeskeey).
Its an excellent embedded Linux platform. The only hitch is that no data sheet is available for CPU.
There is here http://www.mips.com/content/Products/Cores/32-BitCores/ MIPS324KEFamily/ProductCatalog/P_MIPS324KEFamily/productBrief
But that is only the MIPS core the ADAM DSP core is not available.
rgds jtd