rt-thread/bsp/cypress/psoc6-pioneerkit_modus/libs/TARGET_CY8CKIT-062-BLE/cybsp.c

/***************************************************************************//**
* \file cybsp.c
*
* Description:
* Provides initialization code for starting up the hardware contained on the 
* Cypress board.
*
********************************************************************************
* \copyright
* Copyright 2018-2019 Cypress Semiconductor Corporation
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/

#include <stdlib.h>
#include "cybsp.h"
#if defined(CY_USING_HAL)
#include "cyhal_hwmgr.h"
#endif

#if defined(__cplusplus)
extern "C" {
#endif

/* The sysclk deep sleep callback is recommended to be the last callback that
* is executed before entry into deep sleep mode and the first one upon 
* exit the deep sleep mode.
* Doing so minimizes the time spent on low power mode entry and exit.
*/
#ifndef CYBSP_SYSCLK_PM_CALLBACK_ORDER
    #define CYBSP_SYSCLK_PM_CALLBACK_ORDER  (255u)
#endif

#if defined(CYBSP_WIFI_CAPABLE) && defined(CY_USING_HAL)
static cyhal_sdio_t sdio_obj;

cyhal_sdio_t* cybsp_get_wifi_sdio_obj(void)
{
    return &sdio_obj;
}
#endif

/**
 * Registers a power management callback that prepares the clock system
 * for entering deep sleep mode and restore the clocks upon wakeup from deep sleep.
 * NOTE: This is called automatically as part of \ref cybsp_init
 */
static cy_rslt_t cybsp_register_sysclk_pm_callback(void)
{
    cy_rslt_t result = CY_RSLT_SUCCESS;
    static cy_stc_syspm_callback_params_t cybsp_sysclk_pm_callback_param = {NULL, NULL};
    static cy_stc_syspm_callback_t cybsp_sysclk_pm_callback = {
        .callback = &Cy_SysClk_DeepSleepCallback,
        .type = CY_SYSPM_DEEPSLEEP,
        .callbackParams = &cybsp_sysclk_pm_callback_param,
        .order = CYBSP_SYSCLK_PM_CALLBACK_ORDER
    };

    if (!Cy_SysPm_RegisterCallback(&cybsp_sysclk_pm_callback))
    {
        result = CYBSP_RSLT_ERR_SYSCLK_PM_CALLBACK;
    }
    return result;
}

cy_rslt_t cybsp_init(void)
{
    /* Setup hardware manager to track resource usage then initialize all system (clock/power) board configuration */
#if defined(CY_USING_HAL)
    cy_rslt_t result = cyhal_hwmgr_init();
#else
    cy_rslt_t result = CY_RSLT_SUCCESS;
#endif

    init_cycfg_all();

    if (CY_RSLT_SUCCESS == result)
    {
        result = cybsp_register_sysclk_pm_callback();
    }

#if defined(CYBSP_WIFI_CAPABLE) && defined(CY_USING_HAL)
    /* Initialize SDIO interface. This must be done before other HAL API calls as some SDIO implementations require
     * specific peripheral instances.
     * NOTE: The full WiFi interface still needs to be initialized via cybsp_wifi_init_primary(). This is typically 
     * done when starting up WiFi. 
     */
    if (CY_RSLT_SUCCESS == result)
    {
        /* Reserves: CYBSP_WIFI_SDIO, CYBSP_WIFI_SDIO_D0, CYBSP_WIFI_SDIO_D1, CYBSP_WIFI_SDIO_D2, CYBSP_WIFI_SDIO_D3
         * CYBSP_WIFI_SDIO_CMD and CYBSP_WIFI_SDIO_CLK.
         */
        result = cyhal_sdio_init(
                &sdio_obj,
                CYBSP_WIFI_SDIO_CMD,
                CYBSP_WIFI_SDIO_CLK,
                CYBSP_WIFI_SDIO_D0,
                CYBSP_WIFI_SDIO_D1,
                CYBSP_WIFI_SDIO_D2,
                CYBSP_WIFI_SDIO_D3);
    }
#endif /* defined(CYBSP_WIFI_CAPABLE) */

    /* CYHAL_HWMGR_RSLT_ERR_INUSE error code could be returned if any needed for BSP resource was reserved by
     * user previously. Please review the Device Configurator (design.modus) and the BSP reservation list
     * (cyreservedresources.list) to make sure no resources are reserved by both.
     */
    return result;
}

#if defined(__cplusplus)
}
#endif