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Commit Iniziale, progetto funzionante caricato su box ETcontroller in

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Emanuele
2019-10-09 23:25:44 +02:00
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mbed/TARGET_NUCLEO_F401RE/TARGET_STM/gpio_object.h Normal file
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/* mbed Microcontroller Library
*******************************************************************************
* Copyright (c) 2016, 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.
*******************************************************************************
*/
#ifndef MBED_GPIO_OBJECT_H
#define MBED_GPIO_OBJECT_H
#include "mbed_assert.h"
#include "cmsis.h"
#include "PortNames.h"
#include "PeripheralNames.h"
#include "PinNames.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Note: reg_clr might actually be same as reg_set.
* Depends on family whether BRR is available on top of BSRR
* if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
*/
typedef struct {
uint32_t mask;
__IO uint32_t *reg_in;
__IO uint32_t *reg_set;
__IO uint32_t *reg_clr;
PinName pin;
GPIO_TypeDef *gpio;
uint32_t ll_pin;
} gpio_t;
static inline void gpio_write(gpio_t *obj, int value)
{
if (value) {
*obj->reg_set = obj->mask;
} else {
#ifdef GPIO_IP_WITHOUT_BRR
*obj->reg_clr = obj->mask << 16;
#else
*obj->reg_clr = obj->mask;
#endif
}
}
static inline int gpio_read(gpio_t *obj)
{
return ((*obj->reg_in & obj->mask) ? 1 : 0);
}
static inline int gpio_is_connected(const gpio_t *obj)
{
return obj->pin != (PinName)NC;
}
#ifdef __cplusplus
}
#endif
#endif