19.6.4.5.7 Function spi_select_slave()
Selects slave device.
enum status_code spi_select_slave( struct spi_module *const module, struct spi_slave_inst *const slave, bool select)
This function will drive the slave select pin of the selected device low or high depending on the select Boolean. If slave address recognition is enabled, the address will be sent to the slave when selecting it.
| Data direction | Parameter name | Description |
|---|---|---|
|
[in] |
module |
Pointer to the software module struct |
|
[in] |
slave |
Pointer to the attached slave |
|
[in] |
select |
Boolean stating if the slave should be selected or deselected |
Returns
Status of the operation.
| Return value | Description |
|---|---|
|
STATUS_OK |
If the slave device was selected |
|
STATUS_ERR_UNSUPPORTED_DEV |
If the SPI module is operating in slave mode |
|
STATUS_BUSY |
If the SPI module is not ready to write the slave address |