/*
 *  Routines to access hardware
 *
 *  Copyright (c) 2015 Realtek Semiconductor Corp.
 *
 *  This module is a confidential and proprietary property of RealTek and
 *  possession or use of this module requires written permission of RealTek.
 */

#include "device.h"
#include "gpio_api.h"   // mbed
#include "sleep_ex_api.h"
#include "diag.h"
#include "main.h"

#define GPIO_LED_PIN        PC_5
#define GPIO_PUSHBT_PIN     PA_5

// NOTICE: The pull condition may differnet on your board
PinName pull_down_list[] = {
    PA_0, PA_1, PA_2, PA_3, PA_4, PA_5, PA_6, PA_7,
    PB_0, PB_1,       PB_3, PB_4, PB_5, PB_6, PB_7,
    PC_0, PC_1, PC_2, PC_3, PC_4, PC_5, PC_6, PC_7, PC_8, PC_9,
    PD_0, PD_1, PD_2, PD_3, PD_4, PD_5, PD_6, PD_7, PD_8, PD_9,
    PE_0, PE_1, PE_2, PE_3, PE_4, PE_5, PE_6, PE_7, PE_8, PE_9, PE_A,
          PF_1, PF_2, PF_3, PF_4, PF_5
};

// NOTICE: The pull condition may differnet on your board
PinName pull_up_list[] = {
                PB_2,
    PF_0,
    PG_0, PG_1, PG_2, PG_3, PG_4, PG_5, PG_6, PG_7,
    PH_0, PH_1, PH_2, PH_3, PH_4, PH_5, PH_6, PH_7,
    PI_0, PI_1, PI_2, PI_3, PI_4, PI_5, PI_6, PI_7,
    PJ_0, PJ_1, PJ_2, PJ_3, PJ_4, PJ_5, PJ_6,
    PK_0, PK_1, PK_2, PK_3, PK_4, PK_5, PK_6
};

void gpio_pull_control()
{
    int i;
    gpio_t gpio_obj;

    for (i=0; i < sizeof(pull_down_list) / sizeof(pull_down_list[0]); i++) {
        gpio_init(&gpio_obj, pull_down_list[i]);
        gpio_dir(&gpio_obj, PIN_INPUT);
        gpio_mode(&gpio_obj, PullDown);
    }

    for (i=0; i < sizeof(pull_up_list) / sizeof(pull_up_list[0]); i++) {
        gpio_init(&gpio_obj, pull_up_list[i]);
        gpio_dir(&gpio_obj, PIN_INPUT);
        gpio_mode(&gpio_obj, PullUp);
    }
}

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
void main(void)
{
    gpio_t gpio_led, gpio_btn;
    int old_btn_state, new_btn_state;

    DBG_INFO_MSG_OFF(_DBG_GPIO_);

    // Init LED control pin
    gpio_init(&gpio_led, GPIO_LED_PIN);
    gpio_dir(&gpio_led, PIN_OUTPUT);    // Direction: Output
    gpio_mode(&gpio_led, PullNone);     // No pull

    // Initial Push Button pin
    gpio_init(&gpio_btn, GPIO_PUSHBT_PIN);
    gpio_dir(&gpio_btn, PIN_INPUT);     // Direction: Input
    gpio_mode(&gpio_btn, PullDown);

    old_btn_state = new_btn_state = 0;
    gpio_write(&gpio_led, 1);

    DiagPrintf("Push button to sleep...\r\n");
    while(1){
        new_btn_state = gpio_read(&gpio_btn);

        if (old_btn_state == 1 && new_btn_state == 0) {
            gpio_write(&gpio_led, 0);

            DiagPrintf("Sleep 8s... (Or wakeup by pushing button)\r\n");
            //turn off log uart to avoid warning in gpio_pull_control()
            sys_log_uart_off();
            // Please note that the pull control is different in different board
            // This example is a sample code for RTL Ameba Dev Board
            gpio_pull_control();
            standby_wakeup_event_add(STANDBY_WAKEUP_BY_STIMER, 8000, 0);
            standby_wakeup_event_add(STANDBY_WAKEUP_BY_PA5, 0, 1);
            deepstandby_ex();

            DiagPrintf("This line should not be printed\r\n");
        }
        old_btn_state = new_btn_state;
    }
}