45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
|
/**************************************************************************//**
|
||
|
|
*
|
||
|
|
* @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
|