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Merge pull request #3 from tari/hardware-spi 

Document the requirement for hardware SPI
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Sean Cross 2019-02-25 17:11:10 +08:00 committed by GitHub
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README.md
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@ -16,7 +16,10 @@ The EVT boards can be attached directly to the Raspberry Pi as a "hat". When bu
The only pins that are required are 5V, GND, CRESET, SPI_MOSI, SPI_MISO, SPI_CLK, and SPI_CS. The only pins that are required are 5V, GND, CRESET, SPI_MOSI, SPI_MISO, SPI_CLK, and SPI_CS.
You can improve performance by attaching SPI_IO2 and SPI_IO3 and running `fomu-flash` in quad/qpi mode by specifying `-t 4` or `-t q`. The Pi's hardware SPI interface must be enabled in the kernel- use
`raspi-config` or add `dtparam=spi=on` to `/boot/config.txt` and reboot before
using. You can improve performance by attaching SPI_IO2 and SPI_IO3 and running
`fomu-flash` in quad/qpi mode by specifying `-t 4` or `-t q`.
You can get serial interaction by connecting the UART pins, but they are not necessary for flashing. You can get serial interaction by connecting the UART pins, but they are not necessary for flashing.