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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

TARGET_DISCO_L072CZ_LRWAN1/TARGET_STM/gpio_object.h@143:86740a56073b, 2017-05-26 (annotated)

Committer:
AnnaBridge
Date:
Fri May 26 12:30:20 2017 +0100
Revision:
143:86740a56073b
Release 143 of the mbed library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 143:86740a56073b 1 /* mbed Microcontroller Library
AnnaBridge 143:86740a56073b 2 *******************************************************************************
AnnaBridge 143:86740a56073b 3 * Copyright (c) 2016, STMicroelectronics
AnnaBridge 143:86740a56073b 4 * All rights reserved.
AnnaBridge 143:86740a56073b 5 *
AnnaBridge 143:86740a56073b 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 143:86740a56073b 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 143:86740a56073b 8 *
AnnaBridge 143:86740a56073b 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 143:86740a56073b 10 * this list of conditions and the following disclaimer.
AnnaBridge 143:86740a56073b 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 143:86740a56073b 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 143:86740a56073b 13 * and/or other materials provided with the distribution.
AnnaBridge 143:86740a56073b 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 143:86740a56073b 15 * may be used to endorse or promote products derived from this software
AnnaBridge 143:86740a56073b 16 * without specific prior written permission.
AnnaBridge 143:86740a56073b 17 *
AnnaBridge 143:86740a56073b 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 143:86740a56073b 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 143:86740a56073b 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 143:86740a56073b 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 143:86740a56073b 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 143:86740a56073b 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 143:86740a56073b 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 143:86740a56073b 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 143:86740a56073b 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 143:86740a56073b 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 143:86740a56073b 28 *******************************************************************************
AnnaBridge 143:86740a56073b 29 */
AnnaBridge 143:86740a56073b 30 #ifndef MBED_GPIO_OBJECT_H
AnnaBridge 143:86740a56073b 31 #define MBED_GPIO_OBJECT_H
AnnaBridge 143:86740a56073b 32
AnnaBridge 143:86740a56073b 33 #include "mbed_assert.h"
AnnaBridge 143:86740a56073b 34 #include "cmsis.h"
AnnaBridge 143:86740a56073b 35 #include "PortNames.h"
AnnaBridge 143:86740a56073b 36 #include "PeripheralNames.h"
AnnaBridge 143:86740a56073b 37 #include "PinNames.h"
AnnaBridge 143:86740a56073b 38
AnnaBridge 143:86740a56073b 39 #ifdef __cplusplus
AnnaBridge 143:86740a56073b 40 extern "C" {
AnnaBridge 143:86740a56073b 41 #endif
AnnaBridge 143:86740a56073b 42
AnnaBridge 143:86740a56073b 43 /*
AnnaBridge 143:86740a56073b 44 * Note: reg_clr might actually be same as reg_set.
AnnaBridge 143:86740a56073b 45 * Depends on family whether BRR is available on top of BSRR
AnnaBridge 143:86740a56073b 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
AnnaBridge 143:86740a56073b 47 */
AnnaBridge 143:86740a56073b 48 typedef struct {
AnnaBridge 143:86740a56073b 49 uint32_t mask;
AnnaBridge 143:86740a56073b 50 __IO uint32_t *reg_in;
AnnaBridge 143:86740a56073b 51 __IO uint32_t *reg_set;
AnnaBridge 143:86740a56073b 52 __IO uint32_t *reg_clr;
AnnaBridge 143:86740a56073b 53 PinName pin;
AnnaBridge 143:86740a56073b 54 GPIO_TypeDef *gpio;
AnnaBridge 143:86740a56073b 55 uint32_t ll_pin;
AnnaBridge 143:86740a56073b 56 } gpio_t;
AnnaBridge 143:86740a56073b 57
AnnaBridge 143:86740a56073b 58 static inline void gpio_write(gpio_t *obj, int value)
AnnaBridge 143:86740a56073b 59 {
AnnaBridge 143:86740a56073b 60 if (value) {
AnnaBridge 143:86740a56073b 61 *obj->reg_set = obj->mask;
AnnaBridge 143:86740a56073b 62 } else {
AnnaBridge 143:86740a56073b 63 #ifdef GPIO_IP_WITHOUT_BRR
AnnaBridge 143:86740a56073b 64 *obj->reg_clr = obj->mask << 16;
AnnaBridge 143:86740a56073b 65 #else
AnnaBridge 143:86740a56073b 66 *obj->reg_clr = obj->mask;
AnnaBridge 143:86740a56073b 67 #endif
AnnaBridge 143:86740a56073b 68 }
AnnaBridge 143:86740a56073b 69 }
AnnaBridge 143:86740a56073b 70
AnnaBridge 143:86740a56073b 71 static inline int gpio_read(gpio_t *obj)
AnnaBridge 143:86740a56073b 72 {
AnnaBridge 143:86740a56073b 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
AnnaBridge 143:86740a56073b 74 }
AnnaBridge 143:86740a56073b 75
AnnaBridge 143:86740a56073b 76 static inline int gpio_is_connected(const gpio_t *obj)
AnnaBridge 143:86740a56073b 77 {
AnnaBridge 143:86740a56073b 78 return obj->pin != (PinName)NC;
AnnaBridge 143:86740a56073b 79 }
AnnaBridge 143:86740a56073b 80
AnnaBridge 143:86740a56073b 81
AnnaBridge 143:86740a56073b 82 #ifdef __cplusplus
AnnaBridge 143:86740a56073b 83 }
AnnaBridge 143:86740a56073b 84 #endif
AnnaBridge 143:86740a56073b 85
AnnaBridge 143:86740a56073b 86 #endif