/**
  ******************************************************************************
  * @file    stm8s_gpio.h
  * @author  MCD Application Team
  * @version V2.2.0
  * @date    30-September-2014
  * @brief   This file contains all functions prototype and macros for the GPIO peripheral.
   ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM8S_GPIO_H
#define __STM8S_GPIO_H

/* Includes ------------------------------------------------------------------*/
#include "stm8s.h"

/* Exported variables ------------------------------------------------------- */
/* Exported types ------------------------------------------------------------*/

/** @addtogroup GPIO_Exported_Types
  * @{
  */

/**
  * @brief  GPIO modes
  *
  * Bits definitions:
  * - Bit 7: 0 = INPUT mode
  *          1 = OUTPUT mode
  *          1 = PULL-UP (input) or PUSH-PULL (output)
  * - Bit 5: 0 = No external interrupt (input) or No slope control (output)
  *          1 = External interrupt (input) or Slow control enabled (output)
  * - Bit 4: 0 = Low level (output)
  *          1 = High level (output push-pull) or HI-Z (output open-drain)
  */
typedef enum {
	GPIO_MODE_IN_FL_NO_IT = (uint8_t) 0x00,  /*!< Input floating, no external interrupt */
	GPIO_MODE_IN_PU_NO_IT = (uint8_t) 0x40,  /*!< Input pull-up, no external interrupt */
	GPIO_MODE_IN_FL_IT = (uint8_t) 0x20,  /*!< Input floating, external interrupt */
	GPIO_MODE_IN_PU_IT = (uint8_t) 0x60,  /*!< Input pull-up, external interrupt */
	GPIO_MODE_OUT_OD_LOW_FAST = (uint8_t) 0xA0,  /*!< Output open-drain, low level, 10MHz */
	GPIO_MODE_OUT_PP_LOW_FAST = (uint8_t) 0xE0,  /*!< Output push-pull, low level, 10MHz */
	GPIO_MODE_OUT_OD_LOW_SLOW = (uint8_t) 0x80,  /*!< Output open-drain, low level, 2MHz */
	GPIO_MODE_OUT_PP_LOW_SLOW = (uint8_t) 0xC0,  /*!< Output push-pull, low level, 2MHz */
	GPIO_MODE_OUT_OD_HIZ_FAST = (uint8_t) 0xB0,  /*!< Output open-drain, high-impedance level,10MHz */
	GPIO_MODE_OUT_PP_HIGH_FAST = (uint8_t) 0xF0,  /*!< Output push-pull, high level, 10MHz */
	GPIO_MODE_OUT_OD_HIZ_SLOW = (uint8_t) 0x90,  /*!< Output open-drain, high-impedance level, 2MHz */
	GPIO_MODE_OUT_PP_HIGH_SLOW = (uint8_t) 0xD0   /*!< Output push-pull, high level, 2MHz */
} GPIO_Mode_TypeDef;

/**
  * @brief  Definition of the GPIO pins. Used by the @ref GPIO_Init function in
  * order to select the pins to be initialized.
  */

typedef enum {
	GPIO_PIN_0 = ((uint8_t) 0x01),  /*!< Pin 0 selected */
	GPIO_PIN_1 = ((uint8_t) 0x02),  /*!< Pin 1 selected */
	GPIO_PIN_2 = ((uint8_t) 0x04),  /*!< Pin 2 selected */
	GPIO_PIN_3 = ((uint8_t) 0x08),   /*!< Pin 3 selected */
	GPIO_PIN_4 = ((uint8_t) 0x10),  /*!< Pin 4 selected */
	GPIO_PIN_5 = ((uint8_t) 0x20),  /*!< Pin 5 selected */
	GPIO_PIN_6 = ((uint8_t) 0x40),  /*!< Pin 6 selected */
	GPIO_PIN_7 = ((uint8_t) 0x80),  /*!< Pin 7 selected */
	GPIO_PIN_LNIB = ((uint8_t) 0x0F),  /*!< Low nibble pins selected */
	GPIO_PIN_HNIB = ((uint8_t) 0xF0),  /*!< High nibble pins selected */
	GPIO_PIN_ALL = ((uint8_t) 0xFF)   /*!< All pins selected */
} GPIO_Pin_TypeDef;

/**
  * @}
  */

/* Exported constants --------------------------------------------------------*/
/* Exported macros -----------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/

/** @addtogroup GPIO_Private_Macros
  * @{
  */

/**
  * @brief  Macro used by the assert function to check the different functions parameters.
  */

/**
  * @brief  Macro used by the assert function in order to check the different
  * values of GPIOMode_TypeDef.
  */
#define IS_GPIO_MODE_OK(MODE) \
  (((MODE) == GPIO_MODE_IN_FL_NO_IT)    || \
   ((MODE) == GPIO_MODE_IN_PU_NO_IT)    || \
   ((MODE) == GPIO_MODE_IN_FL_IT)       || \
   ((MODE) == GPIO_MODE_IN_PU_IT)       || \
   ((MODE) == GPIO_MODE_OUT_OD_LOW_FAST)  || \
   ((MODE) == GPIO_MODE_OUT_PP_LOW_FAST)  || \
   ((MODE) == GPIO_MODE_OUT_OD_LOW_SLOW)  || \
   ((MODE) == GPIO_MODE_OUT_PP_LOW_SLOW)  || \
   ((MODE) == GPIO_MODE_OUT_OD_HIZ_FAST)  || \
   ((MODE) == GPIO_MODE_OUT_PP_HIGH_FAST)  || \
   ((MODE) == GPIO_MODE_OUT_OD_HIZ_SLOW)  || \
   ((MODE) == GPIO_MODE_OUT_PP_HIGH_SLOW))

/**
  * @brief  Macro used by the assert function in order to check the different
  * values of GPIO_Pins.
  */
#define IS_GPIO_PIN_OK(PIN)  ((PIN) != (uint8_t)0x00)

/**
  * @}
  */

/* Exported functions ------------------------------------------------------- */
/** @addtogroup GPIO_Exported_Functions
  * @{
  */

#if 0
void GPIO_DeInit(GPIO_TypeDef *GPIOx);

void GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef GPIO_Pin, GPIO_Mode_TypeDef GPIO_Mode);

void GPIO_Write(GPIO_TypeDef *GPIOx, uint8_t PortVal);

void GPIO_WriteHigh(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef PortPins);

void GPIO_WriteLow(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef PortPins);

void GPIO_WriteReverse(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef PortPins);

uint8_t GPIO_ReadInputData(GPIO_TypeDef *GPIOx);

uint8_t GPIO_ReadOutputData(GPIO_TypeDef *GPIOx);

BitStatus GPIO_ReadInputPin(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef GPIO_Pin);

void GPIO_ExternalPullUpConfig(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef GPIO_Pin, FunctionalState NewState);
#endif
/**
  * @}
  */

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

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

/**
  * @addtogroup GPIO_Public_Functions
  * @{
  */

/**
  * @brief  Deinitializes the GPIOx peripheral registers to their default reset values.
  * @param  GPIOx: Select the GPIO peripheral number (x = A to I).
  * @retval None
  */
inline void GPIO_DeInit(GPIO_TypeDef *GPIOx)
{
	GPIOx->ODR = GPIO_ODR_RESET_VALUE; /* Reset Output Data Register */
	GPIOx->DDR = GPIO_DDR_RESET_VALUE; /* Reset Data Direction Register */
	GPIOx->CR1 = GPIO_CR1_RESET_VALUE; /* Reset Control Register 1 */
	GPIOx->CR2 = GPIO_CR2_RESET_VALUE; /* Reset Control Register 2 */
}

/**
  * @brief  Initializes the GPIOx according to the specified parameters.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @param  GPIO_Pin : This parameter contains the pin number, it can be any value
  *         of the @ref GPIO_Pin_TypeDef enumeration.
  * @param  GPIO_Mode : This parameter can be a value of the
  *         @Ref GPIO_Mode_TypeDef enumeration.
  * @retval None
  */

inline void GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef GPIO_Pin, GPIO_Mode_TypeDef GPIO_Mode)
{
	/*----------------------*/
	/* Check the parameters */
	/*----------------------*/

	assert_param(IS_GPIO_MODE_OK(GPIO_Mode));
	assert_param(IS_GPIO_PIN_OK(GPIO_Pin));

	/* Reset corresponding bit to GPIO_Pin in CR2 register */
	GPIOx->CR2 &= (uint8_t) (~(GPIO_Pin));

	/*-----------------------------*/
	/* Input/Output mode selection */
	/*-----------------------------*/

	if ((((uint8_t) (GPIO_Mode)) & (uint8_t) 0x80) != (uint8_t) 0x00) /* Output mode */
	{
		if ((((uint8_t) (GPIO_Mode)) & (uint8_t) 0x10) != (uint8_t) 0x00) /* High level */
		{
			GPIOx->ODR |= (uint8_t) GPIO_Pin;
		} else /* Low level */
		{
			GPIOx->ODR &= (uint8_t) (~(GPIO_Pin));
		}
		/* Set Output mode */
		GPIOx->DDR |= (uint8_t) GPIO_Pin;
	} else /* Input mode */
	{
		/* Set Input mode */
		GPIOx->DDR &= (uint8_t) (~(GPIO_Pin));
	}

	/*------------------------------------------------------------------------*/
	/* Pull-Up/Float (Input) or Push-Pull/Open-Drain (Output) modes selection */
	/*------------------------------------------------------------------------*/

	if ((((uint8_t) (GPIO_Mode)) & (uint8_t) 0x40) != (uint8_t) 0x00) /* Pull-Up or Push-Pull */
	{
		GPIOx->CR1 |= (uint8_t) GPIO_Pin;
	} else /* Float or Open-Drain */
	{
		GPIOx->CR1 &= (uint8_t) (~(GPIO_Pin));
	}

	/*-----------------------------------------------------*/
	/* Interrupt (Input) or Slope (Output) modes selection */
	/*-----------------------------------------------------*/

	if ((((uint8_t) (GPIO_Mode)) & (uint8_t) 0x20) != (uint8_t) 0x00) /* Interrupt or Slow slope */
	{
		GPIOx->CR2 |= (uint8_t) GPIO_Pin;
	} else /* No external interrupt or No slope control */
	{
		GPIOx->CR2 &= (uint8_t) (~(GPIO_Pin));
	}
}

/**
  * @brief  Writes data to the specified GPIO data port.
  * @note   The port must be configured in output mode.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @param  GPIO_PortVal : Specifies the value to be written to the port output
  *         data register.
  * @retval None
  */
inline void GPIO_Write(GPIO_TypeDef *GPIOx, uint8_t PortVal)
{
	GPIOx->ODR = PortVal;
}

/**
  * @brief  Writes high level to the specified GPIO pins.
  * @note   The port must be configured in output mode.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @param  PortPins : Specifies the pins to be turned high to the port output.
  *         data register.
  * @retval None
  */
inline void GPIO_WriteHigh(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef PortPins)
{
	GPIOx->ODR |= (uint8_t) PortPins;
}

/**
  * @brief  Writes low level to the specified GPIO pins.
  * @note   The port must be configured in output mode.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @param  PortPins : Specifies the pins to be turned low to the port output.
  *         data register.
  * @retval None
  */
inline void GPIO_WriteLow(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef PortPins)
{
	GPIOx->ODR &= (uint8_t) (~PortPins);
}

/**
  * @brief  Writes reverse level to the specified GPIO pins.
  * @note   The port must be configured in output mode.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @param  PortPins : Specifies the pins to be reversed to the port output.
  *         data register.
  * @retval None
  */
inline void GPIO_WriteReverse(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef PortPins)
{
	GPIOx->ODR ^= (uint8_t) PortPins;
}

/**
  * @brief  Reads the specified GPIO output data port.
  * @note   The port must be configured in input mode.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @retval GPIO output data port value.
  */
inline uint8_t GPIO_ReadOutputData(GPIO_TypeDef *GPIOx)
{
	return ((uint8_t) GPIOx->ODR);
}

/**
  * @brief  Reads the specified GPIO input data port.
  * @note   The port must be configured in input mode.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @retval GPIO input data port value.
  */
inline uint8_t GPIO_ReadInputData(GPIO_TypeDef *GPIOx)
{
	return ((uint8_t) GPIOx->IDR);
}

/**
  * @brief  Reads the specified GPIO input data pin.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @param  GPIO_Pin : Specifies the pin number.
  * @retval BitStatus : GPIO input pin status.
  */
inline BitStatus GPIO_ReadInputPin(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef GPIO_Pin)
{
	return ((BitStatus) (GPIOx->IDR & (uint8_t) GPIO_Pin));
}

/**
  * @brief  Configures the external pull-up on GPIOx pins.
  * @param  GPIOx : Select the GPIO peripheral number (x = A to I).
  * @param  GPIO_Pin : Specifies the pin number
  * @param  NewState : The new state of the pull up pin.
  * @retval None
  */
inline void GPIO_ExternalPullUpConfig(GPIO_TypeDef *GPIOx, GPIO_Pin_TypeDef GPIO_Pin, FunctionalState NewState)
{
	/* Check the parameters */
	assert_param(IS_GPIO_PIN_OK(GPIO_Pin));
	assert_param(IS_FUNCTIONALSTATE_OK(NewState));

	if (NewState != DISABLE) /* External Pull-Up Set*/
	{
		GPIOx->CR1 |= (uint8_t) GPIO_Pin;
	} else /* External Pull-Up Reset*/
	{
		GPIOx->CR1 &= (uint8_t) (~(GPIO_Pin));
	}
}

/**
  * @}
  */

/**
  * @}
  */


/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

#endif /* __STM8L_GPIO_H */


/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/