/*****************************************************************************
 * Copyright (c) 2022, Nations Technologies Inc.
 *
 * All rights reserved.
 * ****************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Nations' name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL NATIONS 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.
 * ****************************************************************************/

/**
 * @file hw_config.c
 * @author Nations
 * @version V1.2.2
 *
 * @copyright Copyright (c) 2022, Nations Technologies Inc. All rights reserved.
 */
#include "hw_config.h"
#include "usb_lib.h"
#include "usb_desc.h"
#include "usb_pwr.h"
#include "n32l43x_rcc.h"

ErrorStatus HSEStartUpStatus;
uint32_t ADC_ConvertedValueX     = 0;
uint32_t ADC_ConvertedValueX_1   = 0;
__IO uint16_t ADC1ConvertedValue = 0, ADC1ConvertedVoltage = 0, calibration_value = 0;

/* Extern variables ----------------------------------------------------------*/
extern __IO uint8_t PrevXferComplete;

GPIO_Module* BUTTON_PORT[BUTTONn]  =  {WAKEUP_BUTTON_GPIO_PORT, TAMPER_BUTTON_GPIO_PORT, 
                                      KEY_BUTTON_GPIO_PORT, RIGHT_BUTTON_GPIO_PORT,
                                      LEFT_BUTTON_GPIO_PORT, UP_BUTTON_GPIO_PORT,
                                      DOWN_BUTTON_GPIO_PORT, SEL_BUTTON_GPIO_PORT}; 

const uint16_t BUTTON_PIN[BUTTONn] = {WAKEUP_BUTTON_PIN, TAMPER_BUTTON_PIN, 
                                      KEY_BUTTON_PIN, RIGHT_BUTTON_PIN,
                                      LEFT_BUTTON_PIN, UP_BUTTON_PIN,
                                      DOWN_BUTTON_PIN, SEL_BUTTON_PIN};

const uint32_t BUTTON_CLK[BUTTONn] = {WAKEUP_BUTTON_GPIO_CLK, TAMPER_BUTTON_GPIO_CLK,
                                      KEY_BUTTON_GPIO_CLK, RIGHT_BUTTON_GPIO_CLK,
                                      LEFT_BUTTON_GPIO_CLK, UP_BUTTON_GPIO_CLK,
                                      DOWN_BUTTON_GPIO_CLK, SEL_BUTTON_GPIO_CLK};

/**
 * @brief  IO configuration.
 */
void Cfg_KeyIO(void)
{
    GPIO_InitType  GPIO_InitStructure;

    /*Enable Joystick GPIOs clock*/
    RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);

    GPIO_InitStruct(&GPIO_InitStructure);
    
    /*Configure the JoyStick IOs as input floating*/
    GPIO_InitStructure.Pin = RIGHT_BUTTON_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Input;/*PullUp is mandatory for Joystick pins*/
    GPIO_InitStructure.GPIO_Pull = GPIO_Pull_Up;
    GPIO_InitStructure.GPIO_Slew_Rate = GPIO_Slew_Rate_High;
    GPIO_InitPeripheral(RIGHT_BUTTON_GPIO_PORT, &GPIO_InitStructure);

    GPIO_InitStructure.Pin = LEFT_BUTTON_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Input;/*PullUp is mandatory for Joystick pins*/
    GPIO_InitStructure.GPIO_Pull = GPIO_Pull_Up;
    GPIO_InitPeripheral(LEFT_BUTTON_GPIO_PORT, &GPIO_InitStructure);

    GPIO_InitStructure.Pin = UP_BUTTON_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Input;/*PullUp is mandatory for Joystick pins*/
    GPIO_InitStructure.GPIO_Pull = GPIO_Pull_Up;
    GPIO_InitPeripheral(UP_BUTTON_GPIO_PORT, &GPIO_InitStructure);

    GPIO_InitStructure.Pin = DOWN_BUTTON_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Input;/*PullUp is mandatory for Joystick pins*/
    GPIO_InitStructure.GPIO_Pull = GPIO_Pull_Up;
    GPIO_InitPeripheral(DOWN_BUTTON_GPIO_PORT, &GPIO_InitStructure);
}                                      

/**
 * @brief  Configures USB Clock input (48MHz).
 */
ErrorStatus Set_USBClock(uint32_t sysclk)
{
    ErrorStatus status = SUCCESS;
    switch(sysclk)
    {
        case SYSCLK_VALUE_48MHz: 
            RCC_ConfigUsbClk(RCC_USBCLK_SRC_PLLCLK_DIV1);
            break;
            
        case SYSCLK_VALUE_72MHz: 
            RCC_ConfigUsbClk(RCC_USBCLK_SRC_PLLCLK_DIV1_5);
            break;
            
        case SYSCLK_VALUE_96MHz: 
            RCC_ConfigUsbClk(RCC_USBCLK_SRC_PLLCLK_DIV2);
            break;
            
        default:
            status = ERROR;
            break;
    }
    return status;
}

/**
 * @brief  Power-off system clocks and power while entering suspend mode.
 */
void Enter_LowPowerMode(void)
{
    /* Set the device state to suspend */
    bDeviceState = SUSPENDED;
}

/**
 * @brief  Restores system clocks and power while exiting suspend mode.
 */
void Leave_LowPowerMode(void)
{
    USB_DeviceMess* pInfo = &Device_Info;

    /* Set the device state to the correct state */
    if (pInfo->CurrentConfiguration != 0)
    {
        /* Device configured */
        bDeviceState = CONFIGURED;
    }
    else
    {
        bDeviceState = ATTACHED;
    }

}

/**
 * @brief  Configures the USB interrupts.
 */
void USB_Interrupts_Config(void)
{
    NVIC_InitType NVIC_InitStructure;
    EXTI_InitType EXTI_InitStructure;

    /* 2 bit for pre-emption priority, 2 bits for subpriority */
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

    /* Enable the USB interrupt */
    NVIC_InitStructure.NVIC_IRQChannel                   = USB_LP_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority        = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    /* Enable the USB Wake-up interrupt */
    NVIC_InitStructure.NVIC_IRQChannel                   = USBWakeUp_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    /* Configure the EXTI line 17 connected internally to the USB IP */
    EXTI_ClrITPendBit(EXTI_LINE17);
	EXTI_InitStruct(&EXTI_InitStructure);
    EXTI_InitStructure.EXTI_Line = EXTI_LINE17; 
    EXTI_InitStructure.EXTI_Mode    = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_InitPeripheral(&EXTI_InitStructure);
}

/**
 * @brief  Configures USB Clock input (48MHz).
 * @param  sysclk: system clock.
 * @return USBClock set Status.
 */
ErrorStatus USB_Config(uint32_t sysclk)
{
    ErrorStatus status = SUCCESS;

    if(Set_USBClock(sysclk) == SUCCESS)
    {
        RCC_EnableAPB1PeriphClk(RCC_APB1_PERIPH_USB, ENABLE);
        status = SUCCESS;
    }
    else
    {
        status = ERROR;
    }

    return status;
}

/**
  * @brief  Returns the selected Button state.
  * @param  Button: Specifies the Button to be checked.
  *   This parameter can be one of following parameters:    
  *     @arg BUTTON_WAKEUP: Wakeup Push Button
  *     @arg BUTTON_TAMPER: Tamper Push Button  
  *     @arg BUTTON_KEY: Key Push Button 
  *     @arg BUTTON_RIGHT: Joystick Right Push Button 
  *     @arg BUTTON_LEFT: Joystick Left Push Button 
  *     @arg BUTTON_UP: Joystick Up Push Button 
  *     @arg BUTTON_DOWN: Joystick Down Push Button
  *     @arg BUTTON_SEL: Joystick Sel Push Button    
  * @retval The Button GPIO pin value.
  */
uint32_t NATIONS_EVAL_PBGetState(Button_TypeDef Button)
{
    return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]);
}


/**
 * @brief  Decodes the Joystick direction.
 *         that failed. If expr is true, it returns no value.
 * @return The direction value.
 */
uint8_t JoyState(void)
{
    /* "right" key is pressed */
    if (!NATIONS_EVAL_PBGetState(Button_RIGHT))
    {
        return JOY_RIGHT;
    }
    /* "left" key is pressed */
    if (!NATIONS_EVAL_PBGetState(Button_LEFT))
    {
        return JOY_LEFT;
    }
    /* "up" key is pressed */
    if (!NATIONS_EVAL_PBGetState(Button_UP))    
    {
        return JOY_UP;
    }
    /* "down" key is pressed */
    if (!NATIONS_EVAL_PBGetState(Button_DOWN))
    {
        return JOY_DOWN;
    }
    /* No key is pressed */
    else
    {
        return 0;
    } 
}

/**
 * @brief   prepares buffer to be sent containing Joystick event infos.
* @param   Keys: keys received from terminal.
 */
void Joystick_Send(uint8_t Keys)
{
    uint8_t Mouse_Buffer[4] = {0, 0, 0, 0};
    int8_t X = 0, Y = 0;

    switch (Keys)
    {
    case JOY_LEFT:
      X -= CURSOR_STEP;
      break;
    case JOY_RIGHT:
      X += CURSOR_STEP;
      break;
    case JOY_UP:
      Y -= CURSOR_STEP;
      break;
    case JOY_DOWN:
      Y += CURSOR_STEP;
      break;
    default:
      return;
    }
    /* prepare buffer to send */
    Mouse_Buffer[1] = X;
    Mouse_Buffer[2] = Y;
  
    /* Reset the control token to inform upper layer that a transfer is ongoing */
    PrevXferComplete = 0;

    /* Copy mouse position info in ENDP1 Tx Packet Memory Area*/
    USB_SilWrite(EP1_IN, Mouse_Buffer, 4);

    /* Enable endpoint for transmission */
    USB_SetEpTxValid(ENDP1);

}


/**
 * @}
 */

/**
 * @}
 */

/**
 * @}
 */
