hm2_bspi_write_chan

NAME
SYNTAX
DESCRIPTION
REALTIME CONSIDERATIONS
RETURN VALUE
SEE ALSO

NAME

hm2_bspi_write_chan − write data to a Hostmot2 Buffered SPI channel

SYNTAX

#include <hostmot2-serial.h>

hm2_bspi_write_chan(char* name, int chan, u32 val)

DESCRIPTION

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).

REALTIME CONSIDERATIONS

May be called from init/cleanup code and from within realtime tasks. Not available in userspace components.

RETURN VALUE

Returns 0 on success and −1 on failure.

SEE ALSO

hm2_allocate_bspi_tram(3hm2), hm2_bspi_set_read_function(3hm2), hm2_bspi_setup_chan(3hm2), hm2_bspi_set_write_function(3hm2), hm2_tram_add_bspi_frame(3hm2), See src/hal/drivers mesa_7i65.comp for an example usage.