Matt Shaver <[email protected]> wrote:
>Is anyone else working on hostmot2 over spi? If not, does anyone have >any advise or pointers on how to go about this? > >My best guess is to look at the difference between hm2_pci and hm2_7i43 >and then insert some SPI related code to change the physical interface. You're on exactly the right track. In one way all AnyIO FPGAs look the same to LinuxCNC: they all present a 16-bit register file for talking to the firmware. In another way AnyIO FPGAs look different: the way they connect this register file to LinuxCNC. The hostmot2 driver system has a layer for connecting the FPGA's register file to LinuxCNC (without caring what gets read and written to the FPGA registers) and another layer for having intelligent conversations with the FPGA (without caring how the communication happens). The interface between these two layers is the hostmot2_lowlevel_io_t structure. hm2_7i43 and hm2_pci both create a hostmot2_lowlevel_io_t structure for each FPGA they find, and pass it up to the higher layer via hm2_register(). The fields of the struct should hopefully be well commented, ask if something is unclear. -- Sebastian Kuzminsky ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
