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<p>I agree with what Brian said.</p>
<p>You need to look at the all the devices on the bus and figure the
load and drive of each to determine how many devices you can have.
Throw in a fudge factor for the wiring and protoboard also.</p>
<p>Another thing to pay attention to is the clock rate. Not all
devices have the same max clock rate so make sure there is not
something going on with that too.<br>
</p>
<p>If you have a digital scope do a bus capture and check out the
bus in the analog domain. See what the select lines and bus timing
look like.</p>
<p>Jay S.<br>
</p>
<div class="moz-cite-prefix">On 3/1/2021 4:55 PM, Jean-Pierre
Desrochers wrote:<br>
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cite="mid:000001d70efe$cb0b0ca0$612125e0$@oricom.ca">
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif""
lang="EN-CA">Did anybody used in the past as much as 6 x SPI
slaves devices<br>
driven by the same micro master bus (MISO, MOSI, SCK)?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif""
lang="EN-CA">Obviously one at the time and each of them
having their own separate Chip select pulse ? <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif""
lang="EN-CA">I cannot see anywhere if there is a limit for
SPI slaves sharing<br>
the same bus (loading, fan out..)<o:p></o:p></span></p>
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<br>
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