/*
 * Copyright (C) 2017 C-SKY Microsystems Co., Ltd. All rights reserved.
 *
 * 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.
 */

/******************************************************************************
 * @file     minilibc_port.c
 * @brief    minilibc port
 * @version  V1.0
 * @date     26. Dec 2017
 ******************************************************************************/

#include <stdio.h>
#include <csi_config.h>
#ifndef CONFIG_KERNEL_NONE
#include <csi_kernel.h>
#endif

#ifdef CONFIG_CHIP_YUNVOICE
#include <drv_usi_usart.h>
#else
//#include <drv_usart.h>
#endif

#ifdef CONFIG_CHIP_YUNVOICE
#define csi_usart_putchar     drv_usi_usart_putchar
#define csi_usart_getchar     drv_usi_usart_getchar
#endif

extern void *console_handle;
int32_t csi_usart_getchar(void* handle, uint8_t *ch);
int32_t csi_usart_putchar(void*      handle, uint8_t ch);

int fputc(int ch, FILE *stream)
{
    (void)stream;

    if (console_handle == NULL) {
        return -1;
    }

    if (ch == '\n') {
        csi_usart_putchar(console_handle, '\r');
    }

    csi_usart_putchar(console_handle, ch);

    return 0;
}

int fgetc(FILE *stream)
{
    uint8_t ch;
    (void)stream;

    if (console_handle == NULL) {
        return -1;
    }

    csi_usart_getchar(console_handle, &ch);

    return ch;
}

/* For printf functions only, do not modify.
 */
int os_critical_enter(unsigned int *lock)
{
//    (void)lock;
//#ifndef CONFIG_KERNEL_NONE
//    csi_kernel_sched_suspend();
//#endif

    return 0;
}

/* For printf functions only, do not modify.
 */
int os_critical_exit(unsigned int *lock)
{
//    (void)lock;
//#ifndef CONFIG_KERNEL_NONE
//    csi_kernel_sched_resume(0);
//#endif

    return 0;
}