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hardware: evt1a: work-in-progress charactarization

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2018-11-23 11:40:31 +08:00
parent d61d45f516
commit fbd26383f8
1 changed files with 12 additions and 10 deletions
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22
hardware/EVT1a.md
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@ -10,21 +10,23 @@ USB Pullup
USB Pad Polarity
Captouch Pads
Capacitance
Reset Button
User buttons
Reset Button | Pass |
User buttons | Pass | Partially pressing on the button gives a partial response. Why is that?
For Raspberry Pi as clock source, use PLLD with I=28,F=1675 or PLLC with I=56,F=3351.
GPIO pinouts:
17 (11): C_DONE
27 (13): C_RESET
24 (18): SPI_IO2/WP
-- (19): SPI_MOSI
-- (21): SPI_MISO
25 (22): SPI_IO3/HOLD
(23): SPI_CLK
(24): SPI_CS
BCM | Header | Signal
====+========+=========
17 | 11 | C_DONE
27 | 13 | C_RESET
24 | 18 | SPI_IO2/WP
10 | 19 | SPI_MOSI
9 | 21 | SPI_MISO
25 | 22 | SPI_IO3/HOLD
11 | 23 | SPI_CLK
8 | 24 | SPI_CS
# Put the SPI flash in "HOLD" mode, so it ignores us.
gpio -g mode 25 out