No SPI clocks

[JerryR]

Hi Group, thanks for your help on this-

I am using PCWH v5.093 to compile code for a PIC18F86J60. I am posting a small snippet of code below. I am using the hardware SPI1 to talk to two external SPI devices

The problem is that using either of the use_spi setups, results in no clocks being issue when attempting to write to a SPI device. The Data Out looks reasonable, however, but no clock pulses.

If I comment out both spi_setup statements, I can generate clock pulses on the clock pin (PIN_C3), so there's nothing in the hardware blocking the clock pin.

This is probably something very simple, but I just can't see it. Here's the code:

[Ttelmah]

Key thing. With #use SPI, you have to use spy_xfer, not spi_write.
You are mixing commands from setup_spi, with those from #use SPI.
You should also specify a clock rate. The default is as fast as possible.
If you look in the manual, under #use spi, you will have listed at the
bottom of the page, the commands that work with this.

[JerryR]

Hello Ttelmah:

Thank you so much for your interest!

Yes, the current version of my code uses the correct method and calls, thanks for your clairification. I see from research you have been kind to mention this to quite a few in the group.

Should have posted this yesterday, but my problem with no clocks was solved. BAD LOGIC ANALYSER PROBE! I actually did have clocks using a scope.

Sorry to have raised the question to the group. Lessons here is don't always trust your equipment.

Best regards!