/*
  Copyright (c) 2017 Daniel Fekete

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

#include "stm32_gpio.h"

#include "variant.h"

void stm32GpioClockEnable(GPIO_TypeDef *port) {
    
    #ifdef GPIOA
    if (port == GPIOA) __HAL_RCC_GPIOA_CLK_ENABLE();
    #endif
    #ifdef GPIOB
    if (port == GPIOB) __HAL_RCC_GPIOB_CLK_ENABLE();
    #endif
    #ifdef GPIOC
    if (port == GPIOC) __HAL_RCC_GPIOC_CLK_ENABLE();
    #endif
    #ifdef GPIOD
    if (port == GPIOD) __HAL_RCC_GPIOD_CLK_ENABLE();
    #endif
    #ifdef GPIOE
    if (port == GPIOE) __HAL_RCC_GPIOE_CLK_ENABLE();
    #endif
    #ifdef GPIOF
    if (port == GPIOF) __HAL_RCC_GPIOF_CLK_ENABLE();
    #endif
    #ifdef GPIOG
    if (port == GPIOG) __HAL_RCC_GPIOG_CLK_ENABLE();
    #endif
    #ifdef GPIOH
    if (port == GPIOH) __HAL_RCC_GPIOH_CLK_ENABLE();
    #endif
    #ifdef GPIOI
    if (port == GPIOI) __HAL_RCC_GPIOI_CLK_ENABLE();
    #endif
    #ifdef GPIOJ
    if (port == GPIOJ) __HAL_RCC_GPIOJ_CLK_ENABLE();
    #endif
    #ifdef GPIOK
    if (port == GPIOK) __HAL_RCC_GPIOK_CLK_ENABLE();
    #endif
}

void pinMode(uint8_t pin, uint8_t mode) {
    stm32_port_pin_type port_pin = variant_pin_list[pin];
    
    if (stm32_pwm_disable_callback != NULL) {
        (*stm32_pwm_disable_callback)(port_pin.port, port_pin.pin_mask);
    }

    stm32GpioClockEnable(port_pin.port);
    
    GPIO_InitTypeDef init;
    
    init.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    init.Pin = port_pin.pin_mask;
    
    switch ( mode ) {
      case INPUT:
        init.Mode = GPIO_MODE_INPUT;
        init.Pull =  GPIO_NOPULL;
        break;
      
      case INPUT_PULLUP:
        init.Mode = GPIO_MODE_INPUT;
        init.Pull =  GPIO_PULLUP;
        break;
        
      case INPUT_PULLDOWN:
        init.Mode = GPIO_MODE_INPUT;
        init.Pull =  GPIO_PULLDOWN;
        break;
        
      case OUTPUT:
        init.Mode = GPIO_MODE_OUTPUT_PP;
        init.Pull =  GPIO_NOPULL;
        break;
        
      default:
        return;
        break;
    }
    
    HAL_GPIO_Init(port_pin.port, &init);
    
}

void pinModeLL(GPIO_TypeDef *port, uint32_t ll_pin, uint8_t mode) {

    stm32GpioClockEnable(port);

    int pinMode;
    int outputType;
    int pull;

    switch ( mode ) {
      case INPUT:
          pinMode = LL_GPIO_MODE_INPUT;
          outputType = LL_GPIO_OUTPUT_OPENDRAIN;
          pull = LL_GPIO_PULL_DOWN;
        break;

      case INPUT_PULLUP:
          pinMode = LL_GPIO_MODE_INPUT;
          outputType = LL_GPIO_OUTPUT_PUSHPULL;
          pull = LL_GPIO_PULL_UP;
        break;

      case INPUT_PULLDOWN:
          pinMode = LL_GPIO_MODE_INPUT;
          outputType = LL_GPIO_OUTPUT_PUSHPULL;
          pull = LL_GPIO_PULL_DOWN;
        break;

      case OUTPUT:
          pinMode = LL_GPIO_MODE_OUTPUT;
          outputType = LL_GPIO_OUTPUT_PUSHPULL;
          pull = LL_GPIO_PULL_DOWN;
        break;

      default:
        return;
        break;
    }

    LL_GPIO_SetPinMode(port, ll_pin, pinMode);
    LL_GPIO_SetPinPull(port, ll_pin, pull);
    LL_GPIO_SetPinOutputType(port, ll_pin, outputType);
    LL_GPIO_SetPinSpeed(port, ll_pin, LL_GPIO_SPEED_FREQ_HIGH);

}