7 Commits

Author	SHA1	Message	Date
Werner Almesberger	b390b28364	atusd/ERRATA: started errata section for 100912. Nothing major so far.	2010-09-14 13:44:16 -03:00
Werner Almesberger	0a0a50d73d	Performance comparison of atusb vs. atusd. ... - atusd/tests/send-20100909: conducted performance comparison of atusb vs. atusd - atusd/ERRATA: changed also first board to capacitative divider	2010-09-09 20:38:50 -03:00
Werner Almesberger	6e726d1fb9	Improved clock stability by using a capacitative divider and found more minor ... issues. - atusd/ERRATA: work around the clock instability by replacing the resistive divider with a capacitative divider - atusd/ERRATA: a ground plane under the clock circuit would also be good to have - atusd/ERRATA: via near pin 1 is too close to the chip if we need to cut wires (in DIY boards) - atusd/sim/cdiv.sch: simulation of the capacitative divider	2010-09-09 12:35:47 -03:00
Werner Almesberger	93f0f403a7	New atusd errata and a few small CAM updates. ... - atusd/ERRATA: added errata section for version 20100908 - atusd/cam/doit: increase tool clearance from 1.5 mm to 2 mm - atusd/cam/pcb.pl (cut): cutting counter-clockwise did not reduce burr. Removed reversal of cutting direction. - atusd/cam/pcb.pl: made area selection formulas easier to understand	2010-09-09 09:23:18 -03:00
Werner Almesberger	9ad96bd5f9	Board bringup: talk to the chip and read IDs. ... - atusd/ERRATA: mention that the reset circuit can go, as expected - atusd/tools/Makefile: add include path to at86rf230.h - atusd/tools/lib/atusd.c: include atusd.h, for consistency checking - atusd/tools/lib/atusd.c (spi_begin, spi_end, spi_data_in, spi_data_out, spi_send_partial, spi_recv, spi_finish, spi_send): low-level functions to access our modified SPI - atusd/tools/lib/atusd.h, atusd/tools/lib/atusd.c (atusd_reg_write, atusd_reg_read): register read and write access - atusd/tools/try.c: read and print chip IDs	2010-09-05 16:59:59 -03:00
Werner Almesberger	a18d5969bd	Next part of board bringup: reset and power cycling. ... - atusd/ERRATA: one more problem: the transistor footprint is wrong - atusd/tools/lib/atusd.c (atusd_cycle, atusd_reset): added power cycling and hardware reset - atusd/tools/lib/atusd.h: be nice and make a header file - atusd/tools/try.c: be nice and use header files (caught a bug as well)	2010-09-05 14:07:01 -03:00
Werner Almesberger	86e556ce92	First part of the board bringup: power and clock. ... - atusd/ERRATA: variations of the circuit being debugged from the design - tools/Makefile, tools/try.c, tools/lib/atusd.c: user-space tool to enable the board and (in the future) establish communication - atusd/sim/clk.sch: simulation of CLK attenuation circuit with capacitative load from scope probe	2010-09-04 23:14:57 -03:00