Comments (1)
terjeio
commented on September 27, 2024
1
Before I start writing any HAL interface for the SPI bus of the Due, I just wanted to make sure this is not already implemented.
It is not.
Looking through the different Trinamic configuration options, I see that there is an I2C->SPI bridge which is a bit confusing.
I made it for my CNC Boosterpack BOB for TI LaunchPads - it has an I2C interface but no free pins for SPI. So making a I2C <> SPI bridge was the only option for me.
If anyone could point me in the right direction as to how to go about implementing this SPI functionality; that would be greatly appreciated.
What's currently getting me stumped is how to implement the chip-select (CSN) SPI specific functionality.
Take a look at one of the existing implementations. There are two modes for commuinicationg via SPI, a dedicated chip select for each driver or a single for all. The latter is by chaining all the drivers to create a single long register - all drivers are written to in a single transaction.
from sam3x8e.
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