Windows driver sample for SPI device

NTDEV
1

I am looking for a sample code in WDK (8.1 and 10) for an SPI device. I see the samples on I2C and on GPIO. Somehow, I do not see anything on SPI. I would appreciate any pointer. Thanks

2

The SPB client driver model is such that you don’t really care if the device
is connected via I2C or SPI, they’re both just presented as a serial
connection resource (though you can know the specific bus if necessary).

Follow the I2C example and you should be all good. SpbTest is also a great
place to start for educational purposes, it’s a generic SPB client driver
that will communicate with any serial device connected via I2C or SPI. As
you’ll see from the code it’s all done in a generic way, the underlying bus
doesn’t actually matter.

-scott
OSR
@OSRDrivers

wrote in message news:xxxxx@ntdev…

I am looking for a sample code in WDK (8.1 and 10) for an SPI device. I see
the samples on I2C and on GPIO. Somehow, I do not see anything on SPI. I
would appreciate any pointer. Thanks

3

Scott,

Thanks so much for the information. I will look at spbtest very carefully. I compiled spbtest example, and it is a kernel mode driver. I see a few I2C examples in user-mode. Since I just start it, I would like to ask another question. As you said, SPB client driver model is generic and modification may be need to connection resource (I2C or SPI), can I write a user-mode SPI driver that is similar to user-mode accelerometer sample? Thanks so much for your help.

Dali

4

There should be no problem doing this in user mode. I briefly looked at the
sample and it is choosing to restrict itself I2C when parsing its resources.
I don’t see any other processing though that would be specific to an I2C
attached device versus SPI, it’s all abstracted through the SPB I/O
interface:

https://msdn.microsoft.com/en-us/library/windows/hardware/hh698227(v=vs.85).aspx

-scott
OSR
@OSRDrivers

wrote in message news:xxxxx@ntdev…

Scott,

Thanks so much for the information. I will look at spbtest very carefully. I
compiled spbtest example, and it is a kernel mode driver. I see a few I2C
examples in user-mode. Since I just start it, I would like to ask another
question. As you said, SPB client driver model is generic and modification
may be need to connection resource (I2C or SPI), can I write a user-mode SPI
driver that is similar to user-mode accelerometer sample? Thanks so much for
your help.

Dali