text: /* mbed Microcontroller Library
   *******************************************************************************
   * Copyright (c) 2017, STMicroelectronics
   * All rights reserved.
   *
   * 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.
   *******************************************************************************
   */
  #include "pinmap.h"
  //#include "PortNames.h"
  #include "pin_device.h"
  
  #define error MBED_ERROR
  
  extern GPIO_TypeDef *Set_GPIO_Clock(uint32_t port_idx);
  
  const uint32_t ll_pin_defines[16] = {
      LL_GPIO_PIN_0,
      LL_GPIO_PIN_1,
      LL_GPIO_PIN_2,
      LL_GPIO_PIN_3,
      LL_GPIO_PIN_4,
      LL_GPIO_PIN_5,
      LL_GPIO_PIN_6,
      LL_GPIO_PIN_7,
      LL_GPIO_PIN_8,
      LL_GPIO_PIN_9,
      LL_GPIO_PIN_10,
      LL_GPIO_PIN_11,
      LL_GPIO_PIN_12,
      LL_GPIO_PIN_13,
      LL_GPIO_PIN_14,
      LL_GPIO_PIN_15
  };
  
  typedef enum {
      PortA = 0,
      PortB = 1,
      PortC = 2,
      PortD = 3,
      PortE = 4,
      PortF = 5,
      PortG = 6,
      PortH = 7,
      PortI = 8,
      PortJ = 9,
      PortK = 10
  } PortName;
  
  // Enable GPIO clock and return GPIO base address
  GPIO_TypeDef *Set_GPIO_Clock(uint32_t port_idx) {
      uint32_t gpio_add = 0;
      switch (port_idx) {
          case PortA:
              gpio_add = GPIOA_BASE;
              __HAL_RCC_GPIOA_CLK_ENABLE();
              break;
          case PortB:
              gpio_add = GPIOB_BASE;
              __HAL_RCC_GPIOB_CLK_ENABLE();
              break;
  #if defined(GPIOC_BASE)
          case PortC:
              gpio_add = GPIOC_BASE;
              __HAL_RCC_GPIOC_CLK_ENABLE();
              break;
  #endif
  #if defined GPIOD_BASE
          case PortD:
              gpio_add = GPIOD_BASE;
              __HAL_RCC_GPIOD_CLK_ENABLE();
              break;
  #endif
  #if defined GPIOE_BASE
          case PortE:
              gpio_add = GPIOE_BASE;
              __HAL_RCC_GPIOE_CLK_ENABLE();
              break;
  #endif
  #if defined GPIOF_BASE
          case PortF:
              gpio_add = GPIOF_BASE;
              __HAL_RCC_GPIOF_CLK_ENABLE();
              break;
  #endif
  #if defined GPIOG_BASE
          case PortG:
  #if defined TARGET_STM32L4
              __HAL_RCC_PWR_CLK_ENABLE();
              HAL_PWREx_EnableVddIO2();
  #endif
              gpio_add = GPIOG_BASE;
              __HAL_RCC_GPIOG_CLK_ENABLE();
              break;
  #endif
  #if defined GPIOH_BASE
          case PortH:
              gpio_add = GPIOH_BASE;
              __HAL_RCC_GPIOH_CLK_ENABLE();
              break;
  #endif
  #if defined GPIOI_BASE
          case PortI:
              gpio_add = GPIOI_BASE;
              __HAL_RCC_GPIOI_CLK_ENABLE();
              break;
  #endif
  #if defined GPIOJ_BASE
          case PortJ:
              gpio_add = GPIOJ_BASE;
              __HAL_RCC_GPIOJ_CLK_ENABLE();
              break;
  #endif
  #if defined GPIOK_BASE
          case PortK:
              gpio_add = GPIOK_BASE;
              __HAL_RCC_GPIOK_CLK_ENABLE();
              break;
  #endif
          default:
              error("Pinmap error: wrong port number.");
              break;
      }
      return (GPIO_TypeDef *) gpio_add;
  }
  
  
  
  /**
   * Configure pin (mode, speed, output type and pull-up/pull-down)
   */
  void pin_function(PinName pin, int data)
  {
      MBED_ASSERT(pin != (PinName)NC);
  
      // Get the pin informations
      uint32_t mode  = STM_PIN_FUNCTION(data);
      uint32_t afnum = STM_PIN_AFNUM(data);
      uint32_t port = STM_PORT(pin);
      uint32_t ll_pin  = ll_pin_defines[STM_PIN(pin)];
      uint32_t ll_mode = 0;
  
      // Enable GPIO clock
      GPIO_TypeDef *gpio = Set_GPIO_Clock(port);
  
      /*  Set default speed to high.
       *  For most families there are dedicated registers so it is
       *  not so important, register can be set at any time.
       *  But for families like F1, speed only applies to output.
       */
  #if defined (TARGET_STM32F1)
  if (mode == STM_PIN_OUTPUT) {
  #endif
      LL_GPIO_SetPinSpeed(gpio, ll_pin, LL_GPIO_SPEED_FREQ_HIGH);
  #if defined (TARGET_STM32F1)
  }
  #endif
  
      switch (mode) {
          case STM_PIN_INPUT:
              ll_mode = LL_GPIO_MODE_INPUT;
              break;
          case STM_PIN_OUTPUT:
              ll_mode = LL_GPIO_MODE_OUTPUT;
              break;
          case STM_PIN_ALTERNATE:
              ll_mode = LL_GPIO_MODE_ALTERNATE;
              // In case of ALT function, also set he afnum
             stm_pin_SetAFPin(gpio, pin, afnum);
              break;
          case STM_PIN_ANALOG:
              ll_mode = LL_GPIO_MODE_ANALOG;
              break;
          default:
              MBED_ASSERT(0);
              break;
      }
      LL_GPIO_SetPinMode(gpio, ll_pin, ll_mode);
  
  #if defined(GPIO_ASCR_ASC0)
      /*  For families where Analog Control ASC0 register is present */
      if (STM_PIN_ANALOG_CONTROL(data)) {
          LL_GPIO_EnablePinAnalogControl(gpio, ll_pin);
      } else {
          LL_GPIO_DisablePinAnalogControl(gpio, ll_pin);
      }
  #endif
  
      /*  For now by default use Speed HIGH for output or alt modes */
      if ((mode == STM_PIN_OUTPUT) ||(mode == STM_PIN_ALTERNATE)) {
      if (STM_PIN_OD(data)) {
              LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_OPENDRAIN);
      } else {
              LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_PUSHPULL);
      }
      }
  
      stm_pin_PullConfig(gpio, ll_pin, STM_PIN_PUPD(data));
  
      stm_pin_DisconnectDebug(pin);
  }
  
  /**
   * Configure pin pull-up/pull-down
   */
  void pin_mode(PinName pin, PinMode mode)
  {
      MBED_ASSERT(pin != (PinName)NC);
  
      uint32_t port_index = STM_PORT(pin);
      uint32_t ll_pin  = ll_pin_defines[STM_PIN(pin)];
      // Enable GPIO clock
      GPIO_TypeDef *gpio = Set_GPIO_Clock(port_index);
      uint32_t function = LL_GPIO_GetPinMode(gpio, ll_pin);
  
      if ((function == LL_GPIO_MODE_OUTPUT) || (function == LL_GPIO_MODE_ALTERNATE))
      {
          if ((mode == OpenDrainNoPull) || (mode == OpenDrainPullUp) || (mode == OpenDrainPullDown)) {
              LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_OPENDRAIN);
          } else {
              LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_PUSHPULL);
          }
      }
  
      if ((mode == OpenDrainPullUp) || (mode == PullUp)) {
          stm_pin_PullConfig(gpio, ll_pin, GPIO_PULLUP);
      } else if ((mode == OpenDrainPullDown) || (mode == PullDown)) {
          stm_pin_PullConfig(gpio, ll_pin, GPIO_PULLDOWN);
      } else {
          stm_pin_PullConfig(gpio, ll_pin, GPIO_NOPULL);
      }
  }
  