SPI2 on PB2,PB3,PB10

[adw]

Hello.

There are SPI2_MOSI, SPI2_MISO, SPI2_CS1 on the PB2, PB3, PB10 respectively. There are described at http://linux-sunxi.org/A13/PIO and at Olinuxino's schematic.
But there are no at A13 datasheet.
Also, it's very strange, that there is no SPI2_CLK pin at port B.
Does anybody know, does these pins actually exist?

[BJFreeman]

The connect to the UETX connector.
the A13 User Manual - v1.2 (2013-08-08).pdf
shows SPI2_SCLK_CFG_REG  as offset 0xA8 figure 6.4.28. pg73
the interupts pg 111

in the A13-OLINUXINO.pdf
it says that the clock is on pin 115 for the A13 which is the PE0

[JohnS]

I think the datasheet is a little confusing, incomplete or even wrong.

To use SPI2 I think I'd try port E:
port pin what
PE0 114 SPI2_CS0
PE1 115 SPI2_CLK
PE2 116 SPI2_MOSI
PE3 117 SPI2_MISO
but maybe
PB10 10 SPI2_CS1
PB2 103 SPI2_MOSI
PB3 150 SPI2_MISO

I didn't see the CLK on PB and the CS1 looks like a typo.

You may have to try a test program or two!  Please report back as I expect others will wonder sooner or later.

Oh - you might check the Linux driver(s) in case they cover this.

John

[adw]

It's obviously, that SPI2 is on port E, my question is about multiplexing it to port B.
A13 User Manual and Data Sheet both contain description SPI2_CS1 on PB10 only, while linux-sunxi.org has a description of SPI2 MOSI and MISO pins.

Where is the error?

[vinifr]

As said BJFreeman, SPI2 is in UEXT connector.

https://dl.dropboxusercontent.com/u/22273442/A13/uext.png