/**
*     Copyright (c) 2023, Nations Technologies Inc.
* 
*     All rights reserved.
*
*     This software is the exclusive property of Nations Technologies Inc. (Hereinafter 
* referred to as NATIONS). This software, and the product of NATIONS described herein 
* (Hereinafter referred to as the Product) are owned by NATIONS under the laws and treaties
* of the People's Republic of China and other applicable jurisdictions worldwide.
*
*     NATIONS does not grant any license under its patents, copyrights, trademarks, or other 
* intellectual property rights. Names and brands of third party may be mentioned or referred 
* thereto (if any) for identification purposes only.
*
*     NATIONS reserves the right to make changes, corrections, enhancements, modifications, and 
* improvements to this software at any time without notice. Please contact NATIONS and obtain 
* the latest version of this software before placing orders.

*     Although NATIONS has attempted to provide accurate and reliable information, NATIONS assumes 
* no responsibility for the accuracy and reliability of this software.
* 
*     It is the responsibility of the user of this software to properly design, program, and test 
* the functionality and safety of any application made of this information and any resulting product. 
* In no event shall NATIONS be liable for any direct, indirect, incidental, special,exemplary, or 
* consequential damages arising in any way out of the use of this software or the Product.
*
*     NATIONS Products are neither intended nor warranted for usage in systems or equipment, any
* malfunction or failure of which may cause loss of human life, bodily injury or severe property 
* damage. Such applications are deemed, "Insecure Usage".
*
*     All Insecure Usage shall be made at user's risk. User shall indemnify NATIONS and hold NATIONS 
* harmless from and against all claims, costs, damages, and other liabilities, arising from or related 
* to any customer's Insecure Usage.

*     Any express or implied warranty with regard to this software or the Product, including,but not 
* limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement
* are disclaimed to the fullest extent permitted by law.

*     Unless otherwise explicitly permitted by NATIONS, anyone may not duplicate, modify, transcribe
* or otherwise distribute this software for any purposes, in whole or in part.
*
*     NATIONS products and technologies shall not be used for or incorporated into any products or systems
* whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 
* User shall comply with any applicable export control laws and regulations promulgated and administered by 
* the governments of any countries asserting jurisdiction over the parties or transactions.
**/

/**
*\*\file main.c
*\*\author Nations
*\*\version v1.0.0
*\*\copyright Copyright (c) 2023, Nations Technologies Inc. All rights reserved.
**/

#include "n32h47x_48x.h"
#include "usbd_core.h"
#include "usbd_desc.h"
#include "usbd_user.h"
#include "usbd_customhid_core.h"
#include "n32h47x_48x_rcc.h"
#include "n32h47x_48x_gpio.h"
#include "usbhs_bsp.h"

#ifdef USB_INTERNAL_DMA_ENABLED
#if defined ( __ICCARM__ )      /* !< IAR Compiler */
#pragma data_alignment=4
#endif
#endif
__ALIGN_BEGIN USB_CORE_MODULE USB_dev __ALIGN_END;

uint8_t Send_Buffer[2];
uint8_t PrevXferDone = 1;


/**
*\*\name    USBHS_ConfigCLK.
*\*\fun     Configure USBHS clock.
*\*\param   none.
*\*\return  none.
*\*\
**/
static void USBHS_ConfigCLK(void)
{
    /* Select the corresponding bandwidth and frequency*/
    RCC_ConfigUSBHSBandwidth(RCC_USBHS_BW_16M);
    
    /* Select USBHS clock source frequency */
    RCC_ConfigUSBHSFrequency(RCC_USBHS_FREQ_16_OR_32M);

    /* Select HSE as USBHS clock */
    RCC_ConfigUSBHSClk(RCC_USBHS_CLKSRC_HSE);

    /* Reset the USBHS phy clock*/
    RCC_EnableAHBPeriphReset(RCC_AHBPRST_USBHSPHYRST); 
    
    /* Enables the USBHS peripheral clock*/
    RCC_EnableAHBPeriphClk(RCC_AHB_PERIPHEN_USBHS, ENABLE);

    /* Set USBHS timing tune */
    RCC->USBHSCTRL2 = (RCC->USBHSCTRL2 & (~(0xF << 4)))  | (0x5 << 4);  //TX vref TUNE
    RCC->USBHSCTRL2 = (RCC->USBHSCTRL2 & (~(0x3 << 12))) | (0x3 << 12); //TX Rise TUNE
    RCC->USBHSCTRL2 = (RCC->USBHSCTRL2 & (~(0x3 << 14))) | (0x3 << 14); //TX Res TUNE
    RCC->USBHSCTRL2 = (RCC->USBHSCTRL2 & (~(0x3 << 16))) | (0x3 << 16); //TX preempamp TUNE
}

/**
*\*\name    main.
*\*\fun     Main program.
*\*\param   none.
*\*\return  none.
*\*\
**/
int main(void)
{
    USBHS_ConfigCLK();

    USBD_Init(&USB_dev, &USBD_desc, &USBD_CUSTOMHID_cb, &USER_cb);

    while (1)
    {
        if (PrevXferDone && (USB_dev.dev.device_status == USB_CONFIGURED))
        {
            Send_Buffer[0] = KEY_REPORT_ID;

            if (GPIO_ReadInputDataBit(KEY_BUTTON_GPIO_PORT, KEY_BUTTON_PIN) == Bit_RESET)
            {
                Send_Buffer[1] = 0x01;
            }
            else
            {
                Send_Buffer[1] = 0x00;
            }
            USBD_CUSTOM_HID_SendReport(&USB_dev, Send_Buffer, 2);
            PrevXferDone = 0;
        }
    }
}
