hm2_bspi_write_chan − write data to a Hostmot2 Buffered SPI channel
|
hm2_bspi_write_chan(char* name, int chan, u32 val) |
hm2_bspi_write_chan write one-time data to the bspi channel "chan" on the bspi instance "name". "name" is a unique string given to each bspi channel during hostmot2 setup. The names of the available channels are printed to standard output during the driver loading process and take the form: hm2_<board name>.<board index>.bspi.<index> For example hm2_5i23.0.bspi.0
This function performs a one-time write of data to the specified channel. It is typically used for setup and chip enabling purposes. It should not be used in the main loop for regular data transfers (but is appropriate to use for on-the- fly setup changes).
Returns 0 on success and -1 on failure.
man hm2_bspi_setup_chan, man hm2_bspi_write_chan, man hm2_tram_add_bspi_frame man hm2_allocate_bspi_tram. See src/hal/drivers mesa_7i65.comp for an example usage.