From 979dfd8e68f01e7d2b827588ae1c3b779ef72801 Mon Sep 17 00:00:00 2001 From: Francis Rowe Date: Sat, 16 May 2015 08:30:04 -0400 Subject: External flashing guides: don't refer to red. Colour blindness is real, and quite common. What's worse, 3.3V on an ATX PSU is an orange wire, not a red wire. Someone looking at "red" in the documentation might not think that you mean 3.3V live/hot (red is the standard colour), but instead they might connect the red wire from the ATX PSU which is 5V; this will destroy the flash chip. Also, red and orange look the same to most colour blind people. --- (limited to 'docs/install/bbb_setup.html') diff --git a/docs/install/bbb_setup.html b/docs/install/bbb_setup.html index e6b99a2..ebcc7d2 100644 --- a/docs/install/bbb_setup.html +++ b/docs/install/bbb_setup.html @@ -294,7 +294,7 @@ Note: flashrom can never write if the flash chip isn't found automatically. NC - - NC NC - - NC NC - - NC - 18 - - 3.3V PSU RED + 18 - - 3.3V (PSU) 22 - - NC - this is pin 1 on the flash chip This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack. @@ -320,7 +320,7 @@ MISO 8-9 WP 18 - - 1 22 - - NC NC - - 21 - 3.3V PSU RED - - 17 - this is pin 1 on the flash chip + 3.3V (PSU) - - 17 - this is pin 1 on the flash chip This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack. You may also need to connect pins 3 and 7 (tie to 3.3V supply). These are HOLD# and WP#. @@ -338,11 +338,12 @@ GND 4-5 MOSI NC = no connection

- DO NOT connect 3.3V PSU RED yet. ONLY connect this once the pomona is connected to the flash chip. + DO NOT connect 3.3V (PSU) yet. ONLY connect this once the pomona is connected to the flash chip.

- You also need to connect the BLACK wire from the 3.3V PSU to pin 2 on the BBB (P9 header). It is safe to install this now - (that is, before you connect the pomona to the flash chip). + You also need to connect the BLACK wire (ground/earth) from the 3.3V PSU to pin 2 on the BBB (P9 header). + It is safe to install this now + (that is, before you connect the pomona to the flash chip); in fact, you should.

if you need to extend the 3.3v psu leads, just use the same colour M-F leads, but keep all other -- cgit v0.9.1