NI USB 8452 2xSPI+I2C

[Dimsasko]

Hi,

I have USB-8452 controller and want to controller one chip with two CS line and one external ic working on I2C bus.

How can I configure both CS line at the start + I2C bus and acquire one SPI line together with I2C bus on same time.

Example is nice.

S

[santo_13]

Unfortunately, there is no way to synchronize both SPI and I2C, though you can use them independently but you cannot say/guarantee that both occurred at the same time.

Could you please provide more information on the devices and application requirements to see if there are any alternatives?

[Dimsasko]

Hi,

Thank you for reply.

Ok, I do not need "true" synchronisation.  It is enough that they are configured at beginning and started one by one in a while loop. I would like to avoid closing task completely and making new with SPI and again new with I2C.

I'm making a test setup to read two chips with SPI and one with I2C interface (ADC for T[°]) so that I can characterize my DUT.

S

[santo_13 · Accepted solution]

Yeah, that is possible. You can create the configuration once and use it in the loop without closing.