toaster-oven-bluepill/Core/Src/gpio.c

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/**
  ******************************************************************************
  * @file    gpio.c
  * @brief   This file provides code for the configuration
  *          of all used GPIO pins.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
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/* Includes ------------------------------------------------------------------*/
#include "gpio.h"

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/*----------------------------------------------------------------------------*/
/* Configure GPIO                                                             */
/*----------------------------------------------------------------------------*/
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/** Configure pins as
        * Analog
        * Input
        * Output
        * EVENT_OUT
        * EXTI
        * Free pins are configured automatically as Analog (this feature is enabled through
        * the Code Generation settings)
*/
void MX_GPIO_Init(void)
{

  LL_EXTI_InitTypeDef EXTI_InitStruct = {0};
  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOC);
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOD);
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOA);
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOB);

  /**/
  LL_GPIO_ResetOutputPin(LED_GPIO_Port, LED_Pin);

  /**/
  LL_GPIO_ResetOutputPin(OLED_RST_GPIO_Port, OLED_RST_Pin);

  /**/
  LL_GPIO_SetOutputPin(GPIOB, OLED_CS_Pin|OLED_DC_Pin);

  /**/
  GPIO_InitStruct.Pin = LED_Pin;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  LL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);

  /**/
  GPIO_InitStruct.Pin = LL_GPIO_PIN_14|LL_GPIO_PIN_15;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ANALOG;
  LL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  /**/
  GPIO_InitStruct.Pin = LL_GPIO_PIN_0|LL_GPIO_PIN_1;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ANALOG;
  LL_GPIO_Init(GPIOD, &GPIO_InitStruct);

  /**/
  GPIO_InitStruct.Pin = LL_GPIO_PIN_2|LL_GPIO_PIN_3|LL_GPIO_PIN_4|LL_GPIO_PIN_5
                          |LL_GPIO_PIN_7|LL_GPIO_PIN_8|LL_GPIO_PIN_11|LL_GPIO_PIN_12;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ANALOG;
  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /**/
  GPIO_InitStruct.Pin = OLED_CS_Pin|OLED_DC_Pin|OLED_RST_Pin;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  LL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /**/
  GPIO_InitStruct.Pin = LL_GPIO_PIN_2|LL_GPIO_PIN_11|LL_GPIO_PIN_12|LL_GPIO_PIN_14
                          |LL_GPIO_PIN_3|LL_GPIO_PIN_4|LL_GPIO_PIN_5|LL_GPIO_PIN_9;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ANALOG;
  LL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /**/
  LL_GPIO_AF_EnableRemap_PD01();

  /**/
  LL_GPIO_AF_SetEXTISource(LL_GPIO_AF_EXTI_PORTB, LL_GPIO_AF_EXTI_LINE8);

  /**/
  EXTI_InitStruct.Line_0_31 = LL_EXTI_LINE_8;
  EXTI_InitStruct.LineCommand = ENABLE;
  EXTI_InitStruct.Mode = LL_EXTI_MODE_IT;
  EXTI_InitStruct.Trigger = LL_EXTI_TRIGGER_RISING_FALLING;
  LL_EXTI_Init(&EXTI_InitStruct);

  /**/
  LL_GPIO_SetPinPull(KNOB_PUSH_GPIO_Port, KNOB_PUSH_Pin, LL_GPIO_PULL_UP);

  /**/
  LL_GPIO_SetPinMode(KNOB_PUSH_GPIO_Port, KNOB_PUSH_Pin, LL_GPIO_MODE_INPUT);

  /* EXTI interrupt init*/
  NVIC_SetPriority(EXTI9_5_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),5, 0));
  NVIC_EnableIRQ(EXTI9_5_IRQn);

}

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