From: ian <ian>
Date: Sun, 29 May 2005 22:30:02 +0000 (+0000)
Subject: wip for protocol
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=a2d0796fcacff922315f7d7b79d230cd196ce432;p=trains.git

wip for protocol
---

diff --git a/hostside/README b/hostside/README
index c13a43a..8f8e7f8 100644
--- a/hostside/README
+++ b/hostside/README
@@ -21,10 +21,52 @@ to tell decoder 3 to go speed 13 backwards every 10ms for 1000 times, ie 10s
  7f       7f       00       64       41       97         output bytes
  01111111 01111111 00000000 01100100 01000001 10010111   as bits
  >1111111 >1111111 >0000000 >1100100 >1000001 $0010111   top bit: >/$ for pic
- 
+
  1111111 1111111  0 00000011 0 01001000 0 01001011 1     reorg bits for nmra:
   preamble (14)   S 0AAAAAAA P 01DCSSSS 0 EEEEEEEE 1
                     03    (+)  48       = 4b ok
 
 To test:
  >t; ./hostside t 0348 n && binview t
+
+
+
+
+Protocol over new hostside stdin:
+
+ P> nmra-x <nmra-command> [<nmra-args>...]
+ P> nmra-1 <nmra-command> [<nmra-args>...]
+ P> nmra-raw-x <nmra-data-hex>...
+ P> nmra-raw-1 <nmra-data-hex>...
+	*-1 means transmit it once
+	*-x means put it in the transmission cycle; to cancel,
+            ask for   nmra-x idle
+
+ P> raw <pic-command-data-hex>...
+ P> pic <pic-command> [<pic-args>...]
+       eg  pic point 3  ==  raw a003
+       for commands with no `...' in README.protocol only
+ P> polarity <bit-string-in-hex>....
+       where, eg, with 14 segments,
+	                 [      1]    [111 1111]    reversible
+	       [123]     [56 7890]    [123 4567]     segment number
+	 1 0010 000    1 000 1000    0 111 1010     example POLARITY
+	 1 0010 RRR    1 RRR RRRR    0 RRR R---      from README.protocol
+		RRR      RRR RRRR      RRR R        actual R bits
+		\__        ___/\__      ___/         ... which map ...
+		   RRRRRRRR       RRRRRR             ... into data ...
+		   RRRRRRRR       RRRRRR--           ... like this.
+		   00000010       00111100
+                                 [ 1111111]         reversible
+                  [12345678]     [90123456]          segment number
+		     0x02           0x3c            hex values
+                       023c                         hex data string
+
+ U< count <type> <number-in-decimal>
+      eg  count polarity 14
+ U< pic detect 1|0 <S>
+ U< pic point <P>
+ U< pic pointed <P>
+ U< pic charged <P>
+ U< polarity <bit-string-in-hex>....
+ U< polarised <bit-string-in-hex>....