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/**************************************************************************//**
*
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-12-12 Wayne First version
*
******************************************************************************/
#include <drv_ebi.h>
#include <drv_sys.h>
#if defined(BSP_USING_EBI)
/* Private variables ------------------------------------------------------------*/
static uint8_t nu_ebi_bank_mask = 0;
/* Public functions -------------------------------------------------------------*/
rt_err_t nu_ebi_init(uint32_t u32Bank, uint32_t u32DataWidth, uint32_t u32TimingClass, uint32_t u32BusMode, uint32_t u32CSActiveLevel)
{
if (u32Bank > MAX_BANK)
return -(RT_ERROR);
/* Check this bank is not used */
if ((1 << u32Bank) & nu_ebi_bank_mask)
return -(RT_ERROR);
if (!nu_ebi_bank_mask)
{
nu_sys_ipclk_enable(EBICKEN);
nu_sys_ip_reset(EBIRST);
}
/* Initialize EBI */
EBI_Open(u32Bank, u32DataWidth, u32TimingClass, u32BusMode, u32CSActiveLevel);
nu_ebi_bank_mask |= (1 << u32Bank);
return RT_EOK;
}
#endif //BSP_USING_EBI
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