/*
 * Copyright (c) 2019-2023 Beijing Hanwei Innovation Technology Ltd. Co. and
 * its subsidiaries and affiliates (collectly called MKSEMI).
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into an MKSEMI
 *    integrated circuit in a product or a software update for such product,
 *    must reproduce the above copyright notice, this list of conditions and
 *    the following disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * 3. Neither the name of MKSEMI nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    MKSEMI integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be
 *    reverse engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY MKSEMI "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL MKSEMI OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "mk_acmp.h"
#include "mk_power.h"
#include "mk_trace.h"
#include "mk_reset.h"
#include "mk_calib.h"
#include "mk_wdt.h"
#include "libc_rom.h"
#include "board.h"

volatile static uint8_t acmp_done = 0;
static void acmp_callback(void *dev, uint32_t level)
{
    acmp_done = 1;
}

static struct ACMP_CFG_T usr_acmp_cfg = {
    .channel_p = ACMP_EXTPIN5, // positive: acomp0-->GPIO3, acomp1-->GPIO0
    .channel_n = ACMP_EXTPIN6, // negative: acomp0-->GPIO4, acomp1-->GPIO1
    .int_en = true,
    .edge_int = ACMP_BOTHEDGE_INT,
    .hyst_en = true,
    .callback = acmp_callback,
};

/*
 * Connect GND to analog comparator's positive pin first, and then negative pin, you can see compare result in log.
 * Repeat the operation above, you can see the chip being waken up from deep power down by comparator in log.
 * Tips:
 *     When you download new firmware, if your jlink could not attach to mcu, please make sure you have connected
 *     Reset pin of the jtag interface.
 */
int main(void)
{
    board_clock_run();
    board_pins_config();
    board_debug_console_open(TRACE_PORT_UART0);
    // Reset reason
    reset_cause_get();
    reset_cause_clear();

    // Chip calibration
    calib_chip();

    // Disable watchdog timer
    wdt_close(WDT_ID0);
    LOG_INFO(TRACE_MODULE_APP, "ACMP example\r\n");

    gpio_open();
    board_configure();

    acmp_open(ACMP_ID0, &usr_acmp_cfg);

    power_init();
    power_wakeup_enable(POWER_WAKEUP_BY_ACMP0, POWER_WAKEUP_LEVEL_NONE);
    power_mode_request(POWER_UNIT_APP, POWER_MODE_DEEP_POWER_DOWN);

    while (1)
    {
        if (acmp_done == 1)
        {
            acmp_done = 0;
            LOG_INFO(TRACE_MODULE_APP, "ACMP%d , Compare the results %d\r\n", ACMP_ID0, acmp_get(ACMP_ID0));
        }
        power_manage();
    }

    // acmp_close(ACMP_ID0);
}