/*! ----------------------------------------------------------------------------
 * @file	port.c
 * @brief	HW specific definitions and functions for portability
 *
 * @attention
 *
 * Copyright 2015 (c) DecaWave Ltd, Dublin, Ireland.
 *
 * All rights reserved.
 *
 * @author DecaWave
 */

#include "bsp.h"
#include "compiler.h"
#include "port.h"



/**
  * @brief  Checks whether the specified EXTI line is enabled or not.
  * @param  EXTI_Line: specifies the EXTI line to check.
  *   This parameter can be:
  *     @arg EXTI_Linex: External interrupt line x where x(0..19)
  * @retval The "enable" state of EXTI_Line (SET or RESET).
  */
ITStatus EXTI_GetITEnStatus(uint32_t EXTI_Line)
{
  ITStatus bitstatus = RESET;
  uint32_t enablestatus = 0;
  /* Check the parameters */
  assert_param(IS_GET_EXTI_LINE(EXTI_Line));

  enablestatus =  EXTI->IMR & EXTI_Line;
  if (enablestatus != (uint32_t)RESET)
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  return bitstatus;
}

void reset_DW1000(void)
{
	port_SPIx_RST_clear();
    Sleep(2);

	port_SPIx_RST_set();
	Sleep(3);
}

/*
* RST irq
* When reset, this PIN is pulled down by DW1000, then rising up
*/
void setup_DW1000RSTnIRQ(int enable)
{
    GPIO_InitTypeDef  GPIO_InitStruct;

    DWM_RST_CLK_ENABLE();
	if(enable) //Enable RST irq
	{
        GPIO_InitStruct.Pin         = DWM_RST_PIN;
        //MP IRQ polarity is high by default
        GPIO_InitStruct.Mode        = GPIO_MODE_IT_RISING;
        //IRQ pin should be Pull Down to prevent unnecessary EXT IRQ while DW1000 goes to sleep mode
        GPIO_InitStruct.Pull        = GPIO_PULLDOWN;
        GPIO_InitStruct.Speed       = GPIO_SPEED_FREQ_HIGH;
        GPIO_InitStruct.Alternate   = 0;
        HAL_GPIO_Init(DWM_RST_PORT, &GPIO_InitStruct);

        HAL_NVIC_SetPriority(DWM_RST_IRQ, DWM_RST_PRIORITY, 0);
        HAL_NVIC_EnableIRQ(DWM_RST_IRQ);
	}
	else
	{
        GPIO_InitStruct.Pin         = DWM_RST_PIN;
        GPIO_InitStruct.Mode        = GPIO_MODE_INPUT;
        GPIO_InitStruct.Pull        = GPIO_PULLDOWN;//Keep pulldown
        GPIO_InitStruct.Speed       = GPIO_SPEED_FREQ_HIGH;
        GPIO_InitStruct.Alternate   = 0;
        HAL_GPIO_Init(DWM_RST_PORT, &GPIO_InitStruct);

        HAL_NVIC_DisableIRQ(DWM_RST_IRQ);
	}
}
void setup_DW1000RSTnPin(uint8_t input)
{
    GPIO_InitTypeDef  GPIO_InitStruct;
    DWM_RST_CLK_ENABLE();
    GPIO_InitStruct.Pin         = DWM_RST_PIN;
    if(input)
    {
        GPIO_InitStruct.Mode        = GPIO_MODE_INPUT;
        GPIO_InitStruct.Pull        = GPIO_PULLDOWN;
        //GPIO_InitStruct.Pull        = GPIO_PULLUP;
	}
    else
    {
        GPIO_InitStruct.Mode        = GPIO_MODE_OUTPUT_PP;
        //GPIO_InitStruct.Pull        = GPIO_PULLDOWN;
        //GPIO_InitStruct.Pull        = GPIO_PULLUP;
        GPIO_InitStruct.Pull        = GPIO_NOPULL;
	}
    GPIO_InitStruct.Speed       = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate   = 0;
    HAL_GPIO_Init(DWM_RST_PORT, &GPIO_InitStruct);
}
uint32_t read_DW1000RstnPin(void)
{
    return HAL_GPIO_ReadPin(DWM_RST_PORT, DWM_RST_PIN);
}
void write_DW1000RstnPin(uint8_t pin)
{
    if(pin)
    {
        HAL_GPIO_WritePin(DWM_RST_PORT, DWM_RST_PIN, GPIO_PIN_SET);
    }
    else
    {
        HAL_GPIO_WritePin(DWM_RST_PORT, DWM_RST_PIN, GPIO_PIN_RESET);
    }
}

int is_IRQ_enabled(void)
{
	return (( NVIC->ISER[((uint32_t)(DWM_IRQ_EXTI) >> 5)]
	           & (uint32_t)(0x01 << (DWM_IRQ_EXTI & (uint8_t)0x1F))  ) ? 1 : 0) ;
}