qi-hardware/ben-blinkenlights
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91bc5eacdd
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2 Commits

Author SHA1 Message Date
Werner Almesberger
d3ab4abe5c uart: the AVR requires nSS for slave mode 
- components/atmega48-mmu.lib: added nSS function to pin 12
- components/atmega48-mmu.lib (RESET): renamed to nRESET
- uart.sch: removed INT and used it for nSS instead
- uart.brd: redid layout for above change
 2011-01-31 21:35:45 -03:00
Werner Almesberger
e7ec5c8ad4 Added simple UART 8:10 card. 
- BOOKSHELF: ATmega48 data sheet
- Makefile (dsv): added target to populate the book shelf
- components/atmega48-mmu.lib, components/atmega48-mmu.dcm: ATmega48-MMU
  schematics symbol
- usrt.pro, uart.sch, uart.cmp, uart.brd: ATmega48-based UART board
 2011-01-31 19:02:50 -03:00