Please tell me about SPI

Hi I'm Suyo.

I want to use SPI of 16bit.

It writes 8Bit in 11-11 of SPI Core with Avalon interface(NiosII document).

Don't 16 bits correspond?

I think that only 8Bit supports because the type of the variable, too, is the char type of alt_u8.

SOPC Builder can set with 16 bits.

Because it is, it thinks that 16 bits can support.

How when wanting to write software at 16 bits, should it be?

I rewrote the driver of SPI.

It rewrote alt_u8 to alt_u16.

The error occurs when doing a rewritten header file include in the program.

There is a change point of the program contents hardly.

Why will the error occur?

Also, it confirmed whether or not to make a sample program actually and whether or not data was written.

Data isn't together written by 8 bits, 16 bits.

If using IOWR_ALTERA_AVALON_SPI_TXDATA(base, data), in case of 8 bits, the data should be written.

I confirmed Signal TapII but data isn't written.

Also,I attempted to access using the index but data wasn't written.

Is there a person who rewrote the driver of SPI to 16 bits?

Tell to me.

Please help me.

Best Regards,

Suyo