user7807: I am working on a project where Arduino is communicating with two devices using SPI. Unfortunately, these two devices has no ss(slave select) pin to communicate with each one separately.
How Can I solve this issue?
Sensor example
Thanks

user30005: Ss or cs pin ISS not mandatory for SPI.
A few solutions.

Power on or off the devices. A group pin can do that.
Cut off mclk.
Have a separate sclk pins for individual chips. You will need to share the serial data pins, ored with some diodes or pull up.
Software SPI.

...
I'm sure others will come up with more solutions.

7807: <p>I am working on a project where Arduino is communicating with two devices using SPI. Unfortunately, these two devices has no ss(slave select) pin to communicate with each one separately.</p>

<p>How Can I solve this issue?</p>

<p><a href="https://www.alibaba.com/product-detail/MS5540C-miniature-barometer-module_60522099649.html" rel="nofollow noreferrer">Sensor example</a></p>

<p>Thanks</p>
 30005: <p>Ss or cs pin ISS not mandatory for SPI.</p>

<p>A few solutions.</p>

<ol>
<li><p>Power on or off the devices. A group pin can do that.</p></li>
<li><p>Cut off mclk.</p></li>
<li><p>Have a separate sclk pins for individual chips. You will need to share the serial data pins, ored with some diodes or pull up.</p></li>
<li><p>Software SPI.</p></li>
</ol>

<p>...</p>

<p>I'm sure others will come up with more solutions.</p>
