Function spi_probe

components/drivers/spi/dev_spi_bus.c:128–167

}

static rt_err_t spi_probe(rt_device_t dev)
{
    rt_err_t err;
    struct rt_spi_bus *bus;
    struct rt_spi_driver *driver = rt_container_of(dev->drv, struct rt_spi_driver, parent);
    struct rt_spi_device *device = rt_container_of(dev, struct rt_spi_device, parent);

    if (!device->bus)
    {
        return -RT_EINVAL;
    }

    err = driver->probe(device);

    if (err)
    {
        return err;
    }

    bus = device->bus;

    if (bus->cs_pins[0] >= 0)
    {
        device->cs_pin = bus->cs_pins[device->chip_select[0]];

        rt_pin_mode(device->cs_pin, PIN_MODE_OUTPUT);
    }
    else
    {
        device->cs_pin = PIN_NONE;
    }

    /* Driver not register SPI device to system */
    if (device->parent.type == RT_Device_Class_Unknown)
    {
        rt_spidev_device_init(device, rt_dm_dev_get_name(&device->parent));
    }

    return err;
}

static rt_err_t spi_remove(rt_device_t dev)
{