Merge branch 'trunk' into emisar-d3aa

* trunk:
  enabled eeprom read/write stabilization by default on recent MCUs, to prevent corrupt data
  thefreeman-avr32dd20-devkit: enable boost bypass at boot, so AA/NiMH can boot
  avr32dd20-devkit: use unimplemented "CH" pin as a boost bypass control
  added "emisar-2ch-fet-joined" build, for D4S w/ lighted switch
  documented FW3X swapped pins better
  documented Wurkkos TS25/TS11/FC13 distinctions
  build.sh: don't require DFPs, newer avr-libc doesn't need them
  use BLIP_LEVEL instead of 0 for "blip"s
  clarified which-hex-file.md a bit; make sure the model number matches
  fw3x: reduced pulsing on low modes

1 files changed, 25 insertions, 0 deletions

diff --git a/hw/hank/emisar-2ch/fet/joined/README.md b/hw/hank/emisar-2ch/fet/joined/README.md
new file mode 100644
index 0000000..a8b0456
--- /dev/null
+++ b/hw/hank/emisar-2ch/fet/joined/README.md
@@ -0,0 +1,25 @@
+# Emisar 2-channel driver connected to only 1 set of LEDs
+
+The default Emisar D4S driver doesn't support a lighted switch, so for lights
+built with one of those, Hank puts in a 2-channel driver instead... but he only
+connects 1 set of LEDs.
+
+This is an odd hardware configuration used only for special orders, I think.
+
+The driver itself has 3 power channels:
+
+  1. Linear regulator 1
+  2. Linear regulator 2
+  3. Direct-drive FET
+
+Channels 1 and 3 are connected to the main LEDs, while channel 2 is not
+physically wired up to anything.
+
+Two channel modes are included:
+
+  1. Linear only
+  2. Linear + DD FET
+
+Channel mode 2 is default, and the only mode enabled after a factory reset.
+Channel mode 1 is included in case anyone wants to turn off the DD FET.
+