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9ad96bd5f9
- 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
13 lines
574 B
Plaintext
13 lines
574 B
Plaintext
- changed C7 to 1 nF to debug a signal attenuation problem. Turned out to be
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a bad trace. According to simulations, 22 pF should be more than enough.
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- added wire connecting uSD-side ground plane to ground plane at outer edge,
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to improve CLK signal return. (Probably unnecessary, too.)
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- the footprint of the transistor (Q1) is reversed :-( It works after
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converting the chip from SOT to PLCC.
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- not an erratum, but with experiments showing power-on reset to be
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reliable, we can consider removing the hardware reset circuit. This will
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also simplify the layout.
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