/* Tell the host that the device is ready to start communication */
static void
usbs_at91_set_pullup (bool set)
{
#ifndef CYGDAT_DEVS_USB_AT91_GPIO_SET_PULLUP_PIN_NONE
if (
#ifdef CYGNUM_DEVS_USB_AT91_GPIO_SET_PULLUP_INVERTED
!set
#else
set
#endif
) {
HAL_ARM_AT91_GPIO_SET(CYGDAT_DEVS_USB_AT91_GPIO_SET_PULLUP_PIN);
} else {
HAL_ARM_AT91_GPIO_RESET(CYGDAT_DEVS_USB_AT91_GPIO_SET_PULLUP_PIN);
}
#endif
}
static void spi_at91_init_bus(cyg_spi_at91_bus_t * spi_bus)
{
cyg_uint32 ctr;
// Create and attach SPI interrupt object
cyg_drv_interrupt_create(spi_bus->interrupt_number,
4,
(cyg_addrword_t)spi_bus,
spi_at91_ISR,
spi_at91_DSR,
&spi_bus->spi_interrupt_handle,
&spi_bus->spi_interrupt);
cyg_drv_interrupt_attach(spi_bus->spi_interrupt_handle);
// Init transfer mutex and condition
cyg_drv_mutex_init(&spi_bus->transfer_mx);
cyg_drv_cond_init(&spi_bus->transfer_cond,
&spi_bus->transfer_mx);
// Init flags
spi_bus->transfer_end = true;
spi_bus->cs_up = false;
// Soft reset the SPI controller
HAL_WRITE_UINT32(spi_bus->base+AT91_SPI_CR, AT91_SPI_CR_SWRST);
// Configure SPI pins
// Put SPI chip select pins in IO output mode
for(ctr = 0;ctr<4;ctr++)
{
if(spi_bus->cs_en[ctr])
{
HAL_ARM_AT91_GPIO_CFG_DIRECTION(spi_bus->cs_gpio[ctr],AT91_PIN_OUT);
HAL_ARM_AT91_GPIO_SET(spi_bus->cs_gpio[ctr]);
}
}
// Call upper layer bus init
CYG_SPI_BUS_COMMON_INIT(&spi_bus->spi_bus);
}
