Siegfried Jackstien 2020/10/03 14:58
so the real answer is ... adding a bt module is possible if you use pb10
and pb11 ... rewire the button s1 to pb9 ... and do a complete firmware
change so that the soft knows where the button now (after rewire) is
connected to and you have to activate the usart2 ...
if the firmware could "check" the usart2 (is there a bt module present)
and would then "automagicalli" use pb9 for s1 ... that would be perfect
if a user has added a bt module and did the rewiring of s1 ... then use
pb9 as s1 input (and activate usart2) .. if the check of the usart2
fails (no bt module added) then let the soft use the "normal" usage of
s1 input ...
problem may be that the bt module may add some noise in the 13cm area
... means if you measure in that area then you should switch off the bt
module ... but then the "usart check" would fail and your s1 button does
not work ... hmmmm ... something to think about?!?!?
so ... to sum it up ... adding bt to v2 should be possible ... but its
tricky and may need a bigger firmware change plus a rewire of s1 (not to
mention the maybe added noise in 13cm that may influence your performance)
i have TWO ... and one is my "test bed" for such things ... and i would
like to add a bt module if possible
just for testing and if that works fine then add it permanently?!? ...
so dislord ... i am no programmer (but a clever hardware modder) ... if
YOU could do the fw change (and maybe send me a test fw in direct mail)
then i would try the modding here :-)
if results are good (and if we can make the above usart check to make
the s1 rewire find out by the fw) ... then we could add that to the fw
for all users ...
i have a bt module in my sark100 ... and to measure "wireless" ... or
besides the pc use the smartphone to display a sweep is superb for
outdoor usage fieldday etc ... so if a similar thingy would be possible
for the v2 ... why not try it?!?
think about you wanna measure somethink on your workbench ... but the
shack pc is on the other end of the room
on the sark 100 the bt module and the usb chip share the same pins ...
means i had to switch off bt modue when usb is connected ... but that
could be easy solved with a p channel fet (IF USB 5V IS PRESENT SWITCH
OFF BT) ... but here we have a second usart ... should be not "tooo
difficult" to add a bt module then ... NOT?!?
just some things to have a bit to discuss ... what do other think?? ...
("hey who writes a smartphone app like the one i have for the sark?")
greetz sigi dg9bfc
Am 03.10.2020 um 14:33 schrieb DiSlord:
> It not possibly on V2, only if made hardware and software mod
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> on V2 no free pins for serial port:
> PB10 and PB11 can be use as serial pins (hardware usart2 on CPU can be connected to it) PB11 used for S1 button, and need move it to for example free PB9)
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> PS i can mistake
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