Author: quozl Date: Wed Nov 30 05:49:14 2011 New Revision: 2716 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2716
Log: OLPC XO-1.75 - new accelerometer rate setting, not used in build, we leave it at chip default
Modified: cpu/arm/olpc/1.75/accelerometer.txt
Modified: cpu/arm/olpc/1.75/accelerometer.txt ============================================================================== --- cpu/arm/olpc/1.75/accelerometer.txt Tue Nov 29 22:06:43 2011 (r2715) +++ cpu/arm/olpc/1.75/accelerometer.txt Wed Nov 30 05:49:14 2011 (r2716) @@ -15,17 +15,25 @@ : bdu ( -- ) h# 23 acc-reg@ h# 80 or h# 23 acc-reg! ;
\ sample rate setting -: odr! ( n -- ) 4 lshift h# 20 acc-reg@ h# 0f and or h# 20 acc-reg! ; +0 value ctl1 +ctl1@ to ctl1 +: ctl1! ( b -- ) dup to ctl1 h# 20 acc-reg! ; +: ctl1( ( -- n ) ctl1 ; +: )ctl1 ( n -- ) dup to ctl1 ctl1! ; +: nm ( n -- n ) h# 08 invert and ; +: lpm ( n -- n ) h# 08 or ; +: odr! ( n odr -- n ) 4 lshift swap h# 0f and or ;
-: 1hz ( -- ) 1 odr! ; -: 10hz ( -- ) 2 odr! ; -: 25hz ( -- ) 3 odr! ; -: 50hz ( -- ) 4 odr! ; \ power up default -: 100hz ( -- ) 5 odr! ; -: 200hz ( -- ) 6 odr! ; -: 400hz ( -- ) 7 odr! ; -: 1.6khz ( -- ) 8 odr! ; -: 5khz ( -- ) 9 odr! ; +: 1hz ( -- ) ctl1( nm 1 odr! )ctl1 ; +: 10hz ( -- ) ctl1( nm 2 odr! )ctl1 ; +: 25hz ( -- ) ctl1( nm 3 odr! )ctl1 ; +: 50hz ( -- ) ctl1( nm 4 odr! )ctl1 ; \ power up default +: 100hz ( -- ) ctl1( nm 5 odr! )ctl1 ; +: 200hz ( -- ) ctl1( nm 6 odr! )ctl1 ; +: 400hz ( -- ) ctl1( nm 7 odr! )ctl1 ; +: 1.25khz ( -- ) ctl1( nm 8 odr! )ctl1 ; +: 1.6khz ( -- ) ctl1( lpm 8 odr! )ctl1 ; +: 5khz ( -- ) ctl1( lpm 9 odr! )ctl1 ;
\ sign extend a byte : bext ( b -- n ) dup h# 80 and if h# ffffff00 or then ;