Posted on January 22, 2014 at 18:50
Hi guys,
I have SPI1 set up on my STM32F4 Discovery board to communicate with a Wiznet W5500io ethernet board. I'm sending it commands which I expect responses to, but I'm getting no answer. I know the module is working because I can see it doing other things on other pins. It's an SPI slave device though, and so I'm a bit confused as to how it will respond when it doesn't have control over the clock. Is there a setting somewhere to enable the clock permanently or am I misunderstanding SPI in some way. This is a picture of what I see on my SPI lines at the moment:
