/********************************** (C) COPYRIGHT *******************************
* File Name          : ch32v30x_it.c
* Author             : WCH
* Version            : V1.0.0
* Date               : 2022/01/18
* Description        : Main Interrupt Service Routines.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for 
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "eth_driver.h"
#include "ch32v30x_it.h"
#include "FreeRTOS.h"
#include "task.h"

void NMI_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void HardFault_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void ETH_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void TIM2_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void EXTI9_5_IRQHandler(void) __attribute__((interrupt()));

/*********************************************************************
 * 毫秒计数器：由 TIM2_IRQHandler 每 WCHNETTIMERPERIOD ms 累加一次。
 * main.c 通过 extern 声明后直接使用，无需 SysTick_Init()。
 *********************************************************************/
volatile uint32_t sys_tick_ms = 0;

/*********************************************************************
 * @fn      NMI_Handler
 *
 * @brief   This function handles NMI exception.
 *
 * @return  none
 */
void NMI_Handler(void)
{
  while (1)
  {
  }
}

/*********************************************************************
 * @fn      HardFault_Handler
 *
 * @brief   This function handles Hard Fault exception.
 *
 * @return  none
 */
void HardFault_Handler(void)
{
    printf("HardFault_Handler\r\n");
    printf("mepc  :%08x\r\n", __get_MEPC());
    printf("mcause:%08x\r\n", __get_MCAUSE());
    printf("mtval :%08x\r\n", __get_MTVAL());
    NVIC_SystemReset();
    while(1);
}

/*********************************************************************
 * @fn      EXTI9_5_IRQHandler
 *
 * @brief   This function handles GPIO exception.
 *
 * @return  none
 */
void EXTI9_5_IRQHandler(void)
{
    ETH_PHYLink( );
    EXTI_ClearITPendingBit(EXTI_Line7);     /* Clear Flag */
}

/*********************************************************************
 * @fn      ETH_IRQHandler
 *
 * @brief   This function handles ETH exception.
 *
 * @return  none
 */
void ETH_IRQHandler(void)
{
    WCHNET_ETHIsr();
}

/*********************************************************************
 * @fn      TIM2_IRQHandler
 *
 * @brief   This function handles TIM2 exception.
 *
 * @return  none
 */
void TIM2_IRQHandler(void)
{
    static uint8_t wchnet_divider = 0;

    /* 2ms tick for FreeRTOS (configTICK_RATE_HZ = 500) */
    sys_tick_ms += 2;
    xPortSysTickHandler();

    /* Software divider: call WCHNET_TimeIsr every 5 ticks = 10ms */
    if (++wchnet_divider >= 5)
    {
        wchnet_divider = 0;
        WCHNET_TimeIsr(WCHNETTIMERPERIOD);
    }

    TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
}