/**
  ******************************************************************************
  * @file    Examples_LL/USART/USART_Communication_Rx_IT/Inc/main.h
  * @author  MCD Application Team
  * @brief   Header for main.c module
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

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

/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_ll_bus.h"
#include "stm32f0xx_ll_rcc.h"
#include "stm32f0xx_ll_system.h"
#include "stm32f0xx_ll_utils.h"
#include "stm32f0xx_ll_gpio.h"
#include "stm32f0xx_ll_exti.h"
#include "stm32f0xx_ll_usart.h"
#include "stm32f0xx_ll_pwr.h"
#if defined(USE_FULL_ASSERT)
#include "stm32_assert.h"
#endif /* USE_FULL_ASSERT */

/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/

/* Define used to enable Virtual Com Port use : 
     USE_VCP_CONNECTION == 0
       USART1 instance is used. (TX on PA.09, RX on PA.10)
       (requires wiring USART1 TX/Rx Pins to PC connection (could be achieved thanks to a USB to UART adapter)
     USE_VCP_CONNECTION == 1
       USART2 instance is used. (TX on PA.02, RX on PA.03)
       (please ensure that USART communication between the target MCU and ST-LINK MCU is properly enabled 
       on HW board in order to support Virtual Com Port)
*/
#define USE_VCP_CONNECTION       1

/* Private definitions covering GPIO clock and USART pins 
   depending on selected USART instance. */
#if (USE_VCP_CONNECTION == 0) 

/* USART1 instance is used. (TX on PA.09, RX on PA.10)
   (requires wiring USART1 TX/Rx Pins to USB to UART adapter) */
#define USARTx_INSTANCE               USART1
#define USARTx_CLK_ENABLE()           LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_USART1)
#define USARTx_CLK_SOURCE()           LL_RCC_SetUSARTClockSource(LL_RCC_USART1_CLKSOURCE_PCLK1)
#define USARTx_IRQn                   USART1_IRQn
#define USARTx_IRQHandler             USART1_IRQHandler

#define USARTx_GPIO_CLK_ENABLE()      LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA)   /* Enable the peripheral clock of GPIOA */
#define USARTx_TX_PIN                 LL_GPIO_PIN_9
#define USARTx_TX_GPIO_PORT           GPIOA
#define USARTx_SET_TX_GPIO_AF()       LL_GPIO_SetAFPin_8_15(GPIOA, LL_GPIO_PIN_9, LL_GPIO_AF_1)
#define USARTx_RX_PIN                 LL_GPIO_PIN_10
#define USARTx_RX_GPIO_PORT           GPIOA
#define USARTx_SET_RX_GPIO_AF()       LL_GPIO_SetAFPin_8_15(GPIOA, LL_GPIO_PIN_10, LL_GPIO_AF_1)

#else
    
/* USART2 instance is used. (TX on PA.02, RX on PA.03)
   (please ensure that USART communication between the target MCU and ST-LINK MCU is properly enabled 
    on HW board in order to support Virtual Com Port) */
#define USARTx_INSTANCE               USART2
#define USARTx_CLK_ENABLE()           LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2)
#define USARTx_CLK_SOURCE()           LL_RCC_SetUSARTClockSource(LL_RCC_USART2_CLKSOURCE_PCLK1)
#define USARTx_IRQn                   USART2_IRQn
#define USARTx_IRQHandler             USART2_IRQHandler

#define USARTx_GPIO_CLK_ENABLE()      LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA)   /* Enable the peripheral clock of GPIOA */
#define USARTx_TX_PIN                 LL_GPIO_PIN_2
#define USARTx_TX_GPIO_PORT           GPIOA
#define USARTx_SET_TX_GPIO_AF()       LL_GPIO_SetAFPin_0_7(GPIOA, LL_GPIO_PIN_2, LL_GPIO_AF_1)
#define USARTx_RX_PIN                 LL_GPIO_PIN_3
#define USARTx_RX_GPIO_PORT           GPIOA
#define USARTx_SET_RX_GPIO_AF()       LL_GPIO_SetAFPin_0_7(GPIOA, LL_GPIO_PIN_3, LL_GPIO_AF_1)

#endif /* (USE_VCP_CONNECTION == 0) */

/**
  * @brief LED2 
  */

#define LED2_PIN                           LL_GPIO_PIN_5
#define LED2_GPIO_PORT                     GPIOA
#define LED2_GPIO_CLK_ENABLE()             LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA)

/**
  * @brief Toggle periods for various blinking modes
  */

#define LED_BLINK_FAST  200
#define LED_BLINK_SLOW  500
#define LED_BLINK_ERROR 1000


/**
  * @brief Key push-button
  */
#define USER_BUTTON_PIN                         LL_GPIO_PIN_13
#define USER_BUTTON_GPIO_PORT                   GPIOC
#define USER_BUTTON_GPIO_CLK_ENABLE()           LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOC)   
#define USER_BUTTON_EXTI_LINE                   LL_EXTI_LINE_13
#define USER_BUTTON_EXTI_IRQn                   EXTI4_15_IRQn
#define USER_BUTTON_EXTI_LINE_ENABLE()          LL_EXTI_EnableIT_0_31(USER_BUTTON_EXTI_LINE)   
#define USER_BUTTON_EXTI_FALLING_TRIG_ENABLE()  LL_EXTI_EnableFallingTrig_0_31(USER_BUTTON_EXTI_LINE)   
#define USER_BUTTON_SYSCFG_SET_EXTI()           do {                                                                     \
                                                  LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SYSCFG);                  \
                                                  LL_SYSCFG_SetEXTISource(LL_SYSCFG_EXTI_PORTC, LL_SYSCFG_EXTI_LINE13);  \
                                                } while(0)
#define USER_BUTTON_IRQHANDLER                  EXTI4_15_IRQHandler

/* Exported macro ------------------------------------------------------------*/

/* Exported functions ------------------------------------------------------- */
/* IRQ Handler treatment functions */
void UserButton_Callback(void); 
void USART_CharReception_Callback(void); 
void Error_Callback(void); 

#endif /* __MAIN_H */

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