wiring_digital.c

/*
  Copyright (c) 2011 Arduino.  All right reserved.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include "Arduino.h"
#include "PinConfigured.h"

#ifdef __cplusplus
extern "C" {
#endif


extern uint32_t g_anOutputPinConfigured[MAX_NB_PORT];

void pinMode(uint32_t ulPin, uint32_t ulMode)
{
  PinName p = digitalPinToPinName(ulPin);

  if (p != NC) {
    // If the pin that support PWM or DAC output, we need to turn it off
#if (defined(HAL_DAC_MODULE_ENABLED) && !defined(HAL_DAC_MODULE_ONLY)) ||\
    (defined(HAL_TIM_MODULE_ENABLED) && !defined(HAL_TIM_MODULE_ONLY))
    if (is_pin_configured(p, g_anOutputPinConfigured)) {
#if defined(HAL_DAC_MODULE_ENABLED) && !defined(HAL_DAC_MODULE_ONLY)
      if (pin_in_pinmap(p, PinMap_DAC)) {
        dac_stop(p);
      } else
#endif //HAL_DAC_MODULE_ENABLED && !HAL_DAC_MODULE_ONLY
#if defined(HAL_TIM_MODULE_ENABLED) && !defined(HAL_TIM_MODULE_ONLY)
        if (pin_in_pinmap(p, PinMap_TIM)) {
          pwm_stop(p);
        }
#endif //HAL_TIM_MODULE_ENABLED && !HAL_TIM_MODULE_ONLY
      {
        reset_pin_configured(p, g_anOutputPinConfigured);
      }
    }
#endif
    switch (ulMode) {
      case INPUT: /* INPUT_FLOATING */
        pin_function(p, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
        break;
      case INPUT_PULLUP:
        pin_function(p, STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, 0));
        break;
      case INPUT_PULLDOWN:
        pin_function(p, STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLDOWN, 0));
        break;
      case INPUT_ANALOG:
        pin_function(p, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0));
        break;
      case OUTPUT:
        pin_function(p, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
        break;
      case OUTPUT_OPEN_DRAIN:
        pin_function(p, STM_PIN_DATA(STM_MODE_OUTPUT_OD, GPIO_NOPULL, 0));
        break;
      default:
        Error_Handler();
        break;
    }
  }
}

void digitalWrite(uint32_t ulPin, uint32_t ulVal)
{
  PinName p = digitalPinToPinName(ulPin);
  if (p != NC) {
    digitalWriteFast(p, ulVal);
  }
}

int digitalRead(uint32_t ulPin)
{
  PinName p = digitalPinToPinName(ulPin);

  return (p == NC) ? 0 : digitalReadFast(p);
}

void digitalToggle(uint32_t ulPin)
{
  PinName p = digitalPinToPinName(ulPin);
  if (p != NC) {
    digitalToggleFast(digitalPinToPinName(ulPin));
  }
}

#ifdef __cplusplus
}
#endif