/**
  ******************************************************************************
  * @file    stm8s_itc.c
  * @author  MCD Application Team
  * @version V2.1.0
  * @date    18-November-2011
  * @brief   This file contains all the functions for the ITC peripheral.
  ******************************************************************************
  */

// Includes ------------------------------------------------------------------
#include "stm8s_itc.h"

 // @addtogroup STM8S_StdPeriph_Driver
// Private typedef -----------------------------------------------------------
// Private define ------------------------------------------------------------
// Private macro -------------------------------------------------------------
// Private variables ---------------------------------------------------------
// Private function prototypes -----------------------------------------------
// Private functions ---------------------------------------------------------

 // @addtogroup ITC_Private_Functions

/**
  * @brief  Utility function used to read CC register.
  * @param  None
  * @retval CPU CC register value
  */
uint8_t ITC_GetCPUCC(void)
{
#ifdef _COSMIC_
  _asm("push cc");
  _asm("pop a");
  return; /* Ignore compiler warning, the returned value is in A register */
#elif defined _RAISONANCE_ /* _RAISONANCE_ */
  return _getCC_();
#else /* _IAR_ */
  asm("push cc");
  asm("pop a"); /* Ignore compiler warning, the returned value is in A register */
#endif /* _COSMIC_*/
}



// Public functions ----------------------------------------------------------

 // @addtogroup ITC_Public_Functions

/**
  * @brief  Deinitializes the ITC registers to their default reset value.
  * @param  None
  * @retval None
  */
void ITC_DeInit(void)
{
    ITC->ISPR1 = ITC_SPRX_RESET_VALUE;
    ITC->ISPR2 = ITC_SPRX_RESET_VALUE;
    ITC->ISPR3 = ITC_SPRX_RESET_VALUE;
    ITC->ISPR4 = ITC_SPRX_RESET_VALUE;
    ITC->ISPR5 = ITC_SPRX_RESET_VALUE;
    ITC->ISPR6 = ITC_SPRX_RESET_VALUE;
    ITC->ISPR7 = ITC_SPRX_RESET_VALUE;
    ITC->ISPR8 = ITC_SPRX_RESET_VALUE;
}

/**
  * @brief  Gets the interrupt software priority bits (I1, I0) value from CPU CC register.
  * @param  None
  * @retval The interrupt software priority bits value.
  */
uint8_t ITC_GetSoftIntStatus(void)
{
    return (uint8_t)(ITC_GetCPUCC() & CPU_CC_I1I0);
}

/**
  * @brief  Gets the software priority of the specified interrupt source.
  * @param  IrqNum : Specifies the peripheral interrupt source.
  * @retval ITC_PriorityLevel_TypeDef : Specifies the software priority of the interrupt source.
  */
ITC_PriorityLevel_TypeDef ITC_GetSoftwarePriority(ITC_Irq_TypeDef IrqNum)
{

    uint8_t Value = 0;
    uint8_t Mask = 0;

    // Check function parameters 
    assert_param(IS_ITC_IRQ_OK((uint8_t)IrqNum));

    // Define the mask corresponding to the bits position in the SPR register 
    Mask = (uint8_t)(0x03U << (((uint8_t)IrqNum % 4U) * 2U));

    switch (IrqNum)
    {
    case ITC_IRQ_TLI: /* TLI software priority can be read but has no meaning */
    case ITC_IRQ_AWU:
    case ITC_IRQ_CLK:
    case ITC_IRQ_PORTA:
        Value = (uint8_t)(ITC->ISPR1 & Mask); /* Read software priority */
        break;
    case ITC_IRQ_PORTB:
    case ITC_IRQ_PORTC:
    case ITC_IRQ_PORTD:
    case ITC_IRQ_PORTE:
        Value = (uint8_t)(ITC->ISPR2 & Mask); /* Read software priority */
        break;
#if defined(STM8S208) || defined(STM8AF52Ax)
    case ITC_IRQ_CAN_RX:
    case ITC_IRQ_CAN_TX:
#endif /*STM8S208 or STM8AF52Ax */

#ifdef STM8S903
    case ITC_IRQ_PORTF:
#endif /*STM8S903*/

    case ITC_IRQ_SPI:
    case ITC_IRQ_TIM1_OVF:
        Value = (uint8_t)(ITC->ISPR3 & Mask); /* Read software priority */
        break;
    case ITC_IRQ_TIM1_CAPCOM:
#ifdef STM8S903
    case ITC_IRQ_TIM5_OVFTRI:
    case ITC_IRQ_TIM5_CAPCOM:
#else
    case ITC_IRQ_TIM2_OVF:
    case ITC_IRQ_TIM2_CAPCOM:
#endif /*STM8S903*/

    case ITC_IRQ_TIM3_OVF:
        Value = (uint8_t)(ITC->ISPR4 & Mask); /* Read software priority */
        break;
    case ITC_IRQ_TIM3_CAPCOM:
    case ITC_IRQ_UART1_TX:
    case ITC_IRQ_UART1_RX:
    case ITC_IRQ_I2C:
        Value = (uint8_t)(ITC->ISPR5 & Mask); /* Read software priority */
        break;
#if defined(STM8S105) || defined(STM8S005) || defined(STM8AF626x)
    case ITC_IRQ_UART2_TX:
    case ITC_IRQ_UART2_RX:
#endif /*STM8S105 or STM8AF626x*/

#if defined(STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8AF52Ax) || \
    defined(STM8AF62Ax)
    case ITC_IRQ_UART3_TX:
    case ITC_IRQ_UART3_RX:
    case ITC_IRQ_ADC2:
#endif /*STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax */

#if defined(STM8S105) || defined(STM8S005) || defined(STM8S103) || defined(STM8S003) || \
    defined(STM8S903) || defined(STM8AF626x)
    case ITC_IRQ_ADC1:
#endif /*STM8S105, STM8S103 or STM8S905 or STM8AF626x */

#ifdef STM8S903
    case ITC_IRQ_TIM6_OVFTRI:
#else
    case ITC_IRQ_TIM4_OVF:
#endif /*STM8S903*/
        Value = (uint8_t)(ITC->ISPR6 & Mask); /* Read software priority */
        break;
    case ITC_IRQ_EEPROM_EEC:
        Value = (uint8_t)(ITC->ISPR7 & Mask); /* Read software priority */
        break;
    default:
        break;
    }

    Value >>= (uint8_t)(((uint8_t)IrqNum % 4u) * 2u);

    return((ITC_PriorityLevel_TypeDef)Value);

}

/**
  * @brief  Sets the software priority of the specified interrupt source.
  * @note   - The modification of the software priority is only possible when
  *         the interrupts are disabled.
  *         - The normal behavior is to disable the interrupt before calling
  *         this function, and re-enable it after.
  *         - The priority level 0 cannot be set (see product specification
  *         for more details).
  * @param  IrqNum : Specifies the peripheral interrupt source.
  * @param  PriorityValue : Specifies the software priority value to set,
  *         can be a value of @ref  ITC_PriorityLevel_TypeDef .
  * @retval None
*/
void ITC_SetSoftwarePriority(ITC_Irq_TypeDef IrqNum, ITC_PriorityLevel_TypeDef PriorityValue)
{

    uint8_t Mask = 0;
    uint8_t NewPriority = 0;

    // Check function parameters 
    assert_param(IS_ITC_IRQ_OK((uint8_t)IrqNum));
    assert_param(IS_ITC_PRIORITY_OK(PriorityValue));

    // Check if interrupts are disabled 
    assert_param(IS_ITC_INTERRUPTS_DISABLED);

    // Define the mask corresponding to the bits position in the SPR register 
    // The mask is reversed in order to clear the 2 bits after more easily 
    Mask = (uint8_t)(~(uint8_t)(0x03U << (((uint8_t)IrqNum % 4U) * 2U)));

    // Define the new priority to write 
    NewPriority = (uint8_t)((uint8_t)(PriorityValue) << (((uint8_t)IrqNum % 4U) * 2U));

    switch (IrqNum)
    {

    case ITC_IRQ_TLI: /* TLI software priority can be written but has no meaning */
    case ITC_IRQ_AWU:
    case ITC_IRQ_CLK:
    case ITC_IRQ_PORTA:
        ITC->ISPR1 &= Mask;
        ITC->ISPR1 |= NewPriority;
        break;

    case ITC_IRQ_PORTB:
    case ITC_IRQ_PORTC:
    case ITC_IRQ_PORTD:
    case ITC_IRQ_PORTE:
        ITC->ISPR2 &= Mask;
        ITC->ISPR2 |= NewPriority;
        break;

#if defined(STM8S208) || defined(STM8AF52Ax)
    case ITC_IRQ_CAN_RX:
    case ITC_IRQ_CAN_TX:
#endif /*STM8S208 or STM8AF52Ax */

#ifdef STM8S903
    case ITC_IRQ_PORTF:
#endif /*STM8S903*/
    case ITC_IRQ_SPI:
    case ITC_IRQ_TIM1_OVF:
        ITC->ISPR3 &= Mask;
        ITC->ISPR3 |= NewPriority;
        break;

    case ITC_IRQ_TIM1_CAPCOM:
#ifdef STM8S903
    case ITC_IRQ_TIM5_OVFTRI:
    case ITC_IRQ_TIM5_CAPCOM:
#else
    case ITC_IRQ_TIM2_OVF:
    case ITC_IRQ_TIM2_CAPCOM:
#endif /*STM8S903*/

    case ITC_IRQ_TIM3_OVF:
        ITC->ISPR4 &= Mask;
        ITC->ISPR4 |= NewPriority;
        break;

    case ITC_IRQ_TIM3_CAPCOM:
    case ITC_IRQ_UART1_TX:
    case ITC_IRQ_UART1_RX:
    case ITC_IRQ_I2C:
        ITC->ISPR5 &= Mask;
        ITC->ISPR5 |= NewPriority;
        break;

#if defined(STM8S105) || defined(STM8S005) || defined(STM8AF626x)
    case ITC_IRQ_UART2_TX:
    case ITC_IRQ_UART2_RX:
#endif /*STM8S105 or STM8AF626x */

#if defined(STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8AF52Ax) || \
    defined(STM8AF62Ax)
    case ITC_IRQ_UART3_TX:
    case ITC_IRQ_UART3_RX:
    case ITC_IRQ_ADC2:
#endif /*STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax */

#if defined(STM8S105) || defined(STM8S005) || defined(STM8S103) || defined(STM8S003) || \
    defined(STM8S903) || defined(STM8AF626x)
    case ITC_IRQ_ADC1:
#endif /*STM8S105, STM8S103 or STM8S905 or STM8AF626x */

#ifdef STM8S903
    case ITC_IRQ_TIM6_OVFTRI:
#else
    case ITC_IRQ_TIM4_OVF:
#endif /*STM8S903*/
        ITC->ISPR6 &= Mask;
        ITC->ISPR6 |= NewPriority;
        break;

    case ITC_IRQ_EEPROM_EEC:
        ITC->ISPR7 &= Mask;
        ITC->ISPR7 |= NewPriority;
        break;

    default:
        break;

    }

}

  
  
