On Thu, 11 Aug 2011, Cliff Blackburn wrote:
> Date: Thu, 11 Aug 2011 09:53:57 -0700
> From: Cliff Blackburn <cblackb...@powertechrepairs.com>
> Reply-To: EMC developers <emc-developers@lists.sourceforge.net>
> To: EMC developers <emc-developers@lists.sourceforge.net>
> Subject: Re: [Emc-developers] Hostmot 2 7I65 Encoder Mux Patch
>
> On 8/11/2011 7:06 AM, Peter C. Wallace wrote:
>> On Thu, 11 Aug 2011, Cliff Blackburn wrote:
>>
>>> Date: Thu, 11 Aug 2011 01:40:30 -0700
>>> From: Cliff Blackburn<cblackb...@powertechrepairs.com>
>>> Reply-To: EMC developers<emc-developers@lists.sourceforge.net>
>>> To: EMC developers<emc-developers@lists.sourceforge.net>
>>> Subject: Re: [Emc-developers] Hostmot 2 7I65 Encoder Mux Patch
>>>
>>> I just realized I screwed up the previous patch. I forgot to include the
>>> change to set NumInstances to 2.
>>>
>>> I found another issue I am had with the hostmot2 driver while using the 7i65
>>> board with the way it determines how many encoder select pins to allocate.
>>> In
>>> pins.c the encoder select pins are determined by how many encoders there
>>> are,
>>>
>>> // muxed encoder gets the sel pins
>>> hm2_pins_allocate_all(hm2, HM2_GTAG_MUXED_ENCODER_SEL,
>>> hm2->encoder.num_instances);
>>>
>>> With this code if I set num_encoders to 8 emc for the 7I65 card it will
>>> allocate the select pins from both connectors if using a 2x7i65 firmware.
>>> Here is the output from dmesg with num_encoders set to 8.
>>
>> The way this is supposed to work is that the pin description for the first
>> connectors mux signal is assigned channel 0 (so enabling channels 0 through 7
>> will enable the first connectors enc mux signal) The pin descriptor for the
>> second connectors mux signal is assigned channel 8 so it will be activeated
>> if
>> encoders 8 though 15 are enabled
>>
>> this may be wrong in the 7I65 pinout
>
> Ok, I figured I might have missed something here. So I just needed to
> change line 149
>
> "IOPortTag & x"00" & MuxedQCountSelTag & MuxedQCountSel0Pin, -- I/O 37"
>
> from x"00" to x"08"?
Yep
Known to work on the 7I48/7I52 configs so should work here as well.
Peter Wallace
Mesa Electronics
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