/****************************************************************************

Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.

This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
be copied by any method or incorporated into another program without
the express written consent of Aerospace C.Power. This Information or any portion
thereof remains the property of Aerospace C.Power. The Information contained herein
is believed to be accurate and Aerospace C.Power assumes no responsibility or
liability for its use in any way and conveys no license or title under
any patent or copyright and makes no representation or warranty that this
Information is free from patent or copyright infringement.

****************************************************************************/
#include "iot_sg.h"
#include "iot_io_api.h"
#include "iot_gpio_api.h"
#include "iot_board_api.h"
#include "iot_sg_sta_ext_mf.h"

#if IOT_SMART_GRID_EXT_MF_ENABLE

/* define power meter multi function signal input GPIO port */
#define IOT_SG_STA_EXT_MF_GPIO                  (GPIO_MULTI_PULSE)
/* define MF interrupt input pin pulse effective time */
#define IOT_SG_STA_EXT_MF_VALID_PULSE_TIME_US   (500)
/* define unsigned int max value for improve exec efficiency */
#define IOT_SG_STA_EXT_MF_UINT32_MAX            (~((unsigned int)0))
/* define second pulse cycle 10 min */
#define IOT_SG_STA_EXT_MF_SECOND_PULSE_COUNT    (10 * 60)

#define IOT_SG_STA_EXT_MF_TIME_INTERVAL(start, end) \
    ((end) > (start) ? \
    (end) - (start) : \
    IOT_SG_STA_EXT_MF_UINT32_MAX - (start) + (end))

static void iot_sg_sta_ext_mf_gpio_interrupt_handle(int arg)
{
    uint8_t gpio_value = 0;
    uint32_t ticks = 0, interval = 0;
    iot_sg_sta_ext_mf_glb_t *mf_glb = p_sg_glb->desc.sta->mf;

    (void)arg;
    if (!mf_glb) {
        return;
    }
    gpio_value = (uint8_t)iot_gpio_value_get(mf_glb->gpio_num);
    if (gpio_value == ERR_FAIL) {
        return;
    }
    ticks = iot_gpio_get_trigger_ticks(mf_glb->gpio_num);

    if (gpio_value) {
        mf_glb->rising_ticks = ticks;
        mf_glb->tick_valid = 1;
        return;
    } else {
        if (!mf_glb->tick_valid) {
            return;
        }
        /* step: calc high-level duration, check if pulse valid */
        interval = IOT_SG_STA_EXT_MF_TIME_INTERVAL(mf_glb->rising_ticks, ticks);
        if (interval < IOT_SG_STA_EXT_MF_VALID_PULSE_TIME_US) {
            return;
        }
    }

    mf_glb->pulse_count++;
    mf_glb->last_ticks = mf_glb->rising_ticks;
    if (mf_glb->mode == IOT_SG_STA_EXT_MF_MODE_PPS_CYCLE) {
        if (!mf_glb->info.sec_pulse.valid) {
            mf_glb->info.sec_pulse.valid = 1;
            mf_glb->info.sec_pulse.start_tick = mf_glb->rising_ticks;
        }
        if (mf_glb->pulse_count >= IOT_SG_STA_EXT_MF_SECOND_PULSE_COUNT) {
            mf_glb->info.sec_pulse.complete = 1;
            iot_gpio_interrupt_enable(mf_glb->gpio_num, 0);
        }
    } else {
        if (mf_glb->info.pulse.index < mf_glb->info.pulse.buffer_cnt) {
            mf_glb->info.pulse.buffer[mf_glb->info.pulse.index] =
                mf_glb->rising_ticks;
            mf_glb->info.pulse.index += 1;
        }
    }
}

void iot_sg_sta_ext_mf_refresh()
{
    uint32_t total = 0, cycle = 0;
    iot_sg_sta_ext_mf_glb_t *mf_glb = p_sg_glb->desc.sta->mf;
    iot_sg_sta_ext_pulse_info_t *pulse = &mf_glb->info.pulse;
    iot_sg_sta_ext_sec_pulse_info_t *sec_pulse = &mf_glb->info.sec_pulse;

    if (!mf_glb) {
        return;
    }
    if (!mf_glb->running) {
        return;
    }
    if (mf_glb->mode == IOT_SG_STA_EXT_MF_MODE_PPS_CYCLE) {
        if (sec_pulse->complete) {
            total = IOT_SG_STA_EXT_MF_TIME_INTERVAL(
                mf_glb->info.sec_pulse.start_tick, mf_glb->last_ticks);
            cycle = total / (IOT_SG_STA_EXT_MF_SECOND_PULSE_COUNT - 1);
            if (sec_pulse->callback) {
                sec_pulse->complete = 0;
                mf_glb->running = 0;
                sec_pulse->callback(cycle);
            }
        }
    } else if (mf_glb->mode == IOT_SG_STA_EXT_MF_MODE_PULSE_COUNT) {
        if (pulse->pending) {
            pulse->pending = 0;
            iot_gpio_interrupt_enable(mf_glb->gpio_num, 1);
        } else if (pulse->remain_time) {
            pulse->remain_time--;
            if (!pulse->remain_time) {
                iot_sg_sta_ext_mf_stop();
            }
        }
    }
    iot_sg_printf("%s count %lu\n", __FUNCTION__, mf_glb->pulse_count);
}

uint32_t iot_sg_sta_ext_mf_init()
{
    uint8_t reason = 0;
    uint32_t ret = ERR_OK;
    iot_sg_sta_global_t *sta_glb = p_sg_glb->desc.sta;
    iot_sg_sta_ext_mf_glb_t *mf_glb = NULL;

    if (!sta_glb) {
        ret = ERR_NOT_READY;
        goto out;
    }
    mf_glb = sta_glb->mf;
    if (mf_glb) {
        goto out;
    }
    sta_glb->mf = os_mem_malloc(IOT_SMART_GRID_MID, sizeof(*mf_glb));
    if (!sta_glb->mf) {
        ret = ERR_NOMEM;
        goto out;
    }
    mf_glb = sta_glb->mf;
    os_mem_set(mf_glb, 0, sizeof(*mf_glb));
    mf_glb->gpio_num = iot_board_get_gpio(IOT_SG_STA_EXT_MF_GPIO);
    if (mf_glb->gpio_num == GPIO_NO_VALID) {
        reason = 1;
        goto out;
    }
    ret = iot_gpio_open_as_interrupt(mf_glb->gpio_num);
    if (ret) {
        reason = 2;
        goto out;
    }
    ret = iot_gpio_interrupt_config(mf_glb->gpio_num, GPIO_INT_EDGE_BOTH,
        iot_sg_sta_ext_mf_gpio_interrupt_handle, 0, GPIO_INT_FUNC_GET_TICKS);
    if (ret) {
        reason = 3;
        goto out;
    }
    iot_sg_printf("%s gpio %lu\n", __FUNCTION__, mf_glb->gpio_num);

out:
    if (reason) {
        iot_sg_printf("%s failed %lu\n", __FUNCTION__, reason);
        iot_gpio_close(mf_glb->gpio_num);
        mf_glb->gpio_num = GPIO_NO_VALID;
        os_mem_free(p_sg_glb->desc.sta->mf);
        p_sg_glb->desc.sta->mf = NULL;
    }
    return ret;
}

void iot_sg_sta_ext_mf_deinit()
{
    iot_sg_sta_ext_mf_glb_t *mf_glb = p_sg_glb->desc.sta->mf;

    iot_sg_printf("%s\n", __FUNCTION__);
    if (mf_glb) {
        if (mf_glb->gpio_num != GPIO_NO_VALID) {
            iot_gpio_close(mf_glb->gpio_num);
        }
        os_mem_free(mf_glb);
        p_sg_glb->desc.sta->mf = NULL;
    }
}

uint32_t iot_sg_sta_ext_mf_start_second_pulse_monitor(
    iot_sg_sta_ext_mf_sec_pulse_finish_handle callback)
{
    uint32_t ret = ERR_OK;
    iot_sg_sta_ext_mf_glb_t *mf_glb = p_sg_glb->desc.sta->mf;

    if (!mf_glb) {
        ret = ERR_NOT_READY;
        goto out;
    }
    if (mf_glb->running) {
        ret = ERR_BUSY;
        goto out;
    }

    mf_glb->mode = IOT_SG_STA_EXT_MF_MODE_PPS_CYCLE;
    mf_glb->pulse_count = 0;
    mf_glb->tick_valid = 0;
    mf_glb->rising_ticks = 0;
    os_mem_set(&mf_glb->info, 0, sizeof(mf_glb->info));
    mf_glb->info.sec_pulse.callback = callback;
    iot_gpio_interrupt_enable(mf_glb->gpio_num, 1);
    mf_glb->running = 1;
    iot_sg_printf("%s\n", __FUNCTION__);
out:
    if (ret) {
        iot_sg_printf("%s failed %d\n", __FUNCTION__, ret);
    }
    return ret;
}

uint32_t iot_sg_sta_ext_mf_start_pulse_monitor(
    uint32_t *buffer, uint32_t buffer_count, uint32_t exec_time,
    iot_sg_sta_ext_mf_pulse_finish_handle callback)
{
    uint32_t ret = ERR_OK;
    iot_sg_sta_ext_mf_glb_t *mf_glb = p_sg_glb->desc.sta->mf;

    IOT_ASSERT(buffer || (buffer == NULL && buffer_count == 0));
    if (!mf_glb) {
        ret = ERR_NOT_READY;
        goto out;
    }
    if (mf_glb->running) {
        ret = ERR_BUSY;
        goto out;
    }

    mf_glb->mode = IOT_SG_STA_EXT_MF_MODE_PULSE_COUNT;
    mf_glb->pulse_count = 0;
    mf_glb->tick_valid = 0;
    mf_glb->rising_ticks = 0;
    os_mem_set(&mf_glb->info, 0, sizeof(mf_glb->info));
    mf_glb->info.pulse.buffer = buffer;
    mf_glb->info.pulse.buffer_cnt = buffer_count;
    mf_glb->info.pulse.callback = callback;
    mf_glb->info.pulse.remain_time = exec_time;
    if (!exec_time) {
        iot_gpio_interrupt_enable(mf_glb->gpio_num, 1);
    } else {
        mf_glb->info.pulse.pending = 1;
    }
    mf_glb->running = 1;
    iot_sg_printf("%s\n", __FUNCTION__);
out:
    if (ret) {
        iot_sg_printf("%s failed %d\n", __FUNCTION__, ret);
    }
    return ret;
}

void iot_sg_sta_ext_mf_stop()
{
    iot_sg_sta_ext_mf_glb_t *mf_glb = p_sg_glb->desc.sta->mf;

    if (!mf_glb) {
        return;
    }
    if (mf_glb->mode == IOT_SG_STA_EXT_MF_MODE_PULSE_COUNT) {
        mf_glb->info.pulse.pending = 0;
    }
    if (mf_glb->running) {
        iot_sg_printf("%s\n", __FUNCTION__);
        iot_gpio_interrupt_enable(mf_glb->gpio_num, 0);
        mf_glb->running = 0;
        if (mf_glb->mode == IOT_SG_STA_EXT_MF_MODE_PULSE_COUNT) {
            mf_glb->info.pulse.remain_time = 0;
            if (mf_glb->info.pulse.callback) {
                mf_glb->info.pulse.callback(mf_glb->pulse_count);
            }
        }
    }
}

uint8_t iot_sg_sta_ext_mf_is_running()
{
    uint8_t running = 0;
    iot_sg_sta_ext_mf_glb_t *mf_glb = p_sg_glb->desc.sta->mf;

    if (mf_glb) {
        running = mf_glb->running;
    }
    return running;
}

#else

void iot_sg_sta_ext_mf_refresh()
{
}

uint32_t iot_sg_sta_ext_mf_init()
{
    return ERR_NOSUPP;
}

void iot_sg_sta_ext_mf_deinit()
{
}

uint32_t iot_sg_sta_ext_mf_start_second_pulse_monitor(
    iot_sg_sta_ext_mf_sec_pulse_finish_handle callback)
{
    (void)callback;
    return ERR_NOSUPP;
}

uint32_t iot_sg_sta_ext_mf_start_pulse_monitor(
    uint32_t *buffer, uint32_t buffer_count, uint32_t exec_time,
    iot_sg_sta_ext_mf_pulse_finish_handle callback)
{
    (void)buffer;
    (void)buffer_count;
    (void)exec_time;
    (void)callback;
    return ERR_NOSUPP;
}

void iot_sg_sta_ext_mf_stop()
{
}

uint8_t iot_sg_sta_ext_mf_is_running()
{
    return 0;
}

#endif