/*****************************************************************************
 * 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"


usb_usart_fifo usb_txfifo;
usb_usart_fifo usb_rxfifo;

/**
 * @brief  Configures USB Clock input (48MHz).
 * @param  sysclk: system clock
 * @return USBClock set Status.
 */
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  conver int to unicode.
* @param value: int value
* @param pbuf: convered data
* @param len: conver data length
 */
static void IntToUnicode (uint32_t value , uint8_t *pbuf , uint8_t len)
{
    uint8_t idx = 0;

    for( idx = 0 ; idx < len ; idx ++)
    {
        if( ((value >> 28)) < 0xA )
        {
            pbuf[ 2* idx] = (value >> 28) + '0';
        }
        else
        {
            pbuf[2* idx] = (value >> 28) + 'A' - 10; 
        }

        value = value << 4;

        pbuf[ 2* idx + 1] = 0;
    }
}



#define VIRTUAL_COM_PORT_SIZ_STRING_SERIAL      26
uint8_t Virtual_Com_Port_StringSerial[VIRTUAL_COM_PORT_SIZ_STRING_SERIAL] =
{
    VIRTUAL_COM_PORT_SIZ_STRING_SERIAL,           /* bLength */
    USB_STRING_DESCRIPTOR_TYPE,                   /* bDescriptorType */
    'N',0, '3', 0, '2',  0 
};
  

/**
  * @brief  Create the serial number string descriptor.
  * @param  None.
  * @retval None.
  */
void Get_SerialNum(void)
{
    u32 Device_Serial0, Device_Serial1, Device_Serial2;

    Device_Serial0 = *(u32*)(0x1FFFF7E8);
    Device_Serial1 = *(u32*)(0x1FFFF7EC);
    Device_Serial2 = *(u32*)(0x1FFFF7F0);

    Device_Serial0 += Device_Serial2;

    if (Device_Serial0 != 0)
    {
        IntToUnicode (Device_Serial0, &Virtual_Com_Port_StringSerial[2] , 8);
        IntToUnicode (Device_Serial1, &Virtual_Com_Port_StringSerial[18], 4);
    }
}




/**
 * @}
 */

/**
 * @}
 */

/**
 * @}
 */
