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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_SAKURAIO_EVB_01/TARGET_STM/gpio_object.h@159:7130f322cb7e, 2017-12-21 (annotated)

Committer:
mbed_official
Date:
Thu Dec 21 18:20:02 2017 +0000
Revision:
159:7130f322cb7e
mbed library version 157

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 159:7130f322cb7e 1 /* mbed Microcontroller Library
mbed_official 159:7130f322cb7e 2 *******************************************************************************
mbed_official 159:7130f322cb7e 3 * Copyright (c) 2016, STMicroelectronics
mbed_official 159:7130f322cb7e 4 * All rights reserved.
mbed_official 159:7130f322cb7e 5 *
mbed_official 159:7130f322cb7e 6 * Redistribution and use in source and binary forms, with or without
mbed_official 159:7130f322cb7e 7 * modification, are permitted provided that the following conditions are met:
mbed_official 159:7130f322cb7e 8 *
mbed_official 159:7130f322cb7e 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 159:7130f322cb7e 10 * this list of conditions and the following disclaimer.
mbed_official 159:7130f322cb7e 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 159:7130f322cb7e 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 159:7130f322cb7e 13 * and/or other materials provided with the distribution.
mbed_official 159:7130f322cb7e 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 159:7130f322cb7e 15 * may be used to endorse or promote products derived from this software
mbed_official 159:7130f322cb7e 16 * without specific prior written permission.
mbed_official 159:7130f322cb7e 17 *
mbed_official 159:7130f322cb7e 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 159:7130f322cb7e 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 159:7130f322cb7e 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 159:7130f322cb7e 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 159:7130f322cb7e 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 159:7130f322cb7e 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 159:7130f322cb7e 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 159:7130f322cb7e 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 159:7130f322cb7e 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 159:7130f322cb7e 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 159:7130f322cb7e 28 *******************************************************************************
mbed_official 159:7130f322cb7e 29 */
mbed_official 159:7130f322cb7e 30 #ifndef MBED_GPIO_OBJECT_H
mbed_official 159:7130f322cb7e 31 #define MBED_GPIO_OBJECT_H
mbed_official 159:7130f322cb7e 32
mbed_official 159:7130f322cb7e 33 #include "mbed_assert.h"
mbed_official 159:7130f322cb7e 34 #include "cmsis.h"
mbed_official 159:7130f322cb7e 35 #include "PortNames.h"
mbed_official 159:7130f322cb7e 36 #include "PeripheralNames.h"
mbed_official 159:7130f322cb7e 37 #include "PinNames.h"
mbed_official 159:7130f322cb7e 38
mbed_official 159:7130f322cb7e 39 #ifdef __cplusplus
mbed_official 159:7130f322cb7e 40 extern "C" {
mbed_official 159:7130f322cb7e 41 #endif
mbed_official 159:7130f322cb7e 42
mbed_official 159:7130f322cb7e 43 /*
mbed_official 159:7130f322cb7e 44 * Note: reg_clr might actually be same as reg_set.
mbed_official 159:7130f322cb7e 45 * Depends on family whether BRR is available on top of BSRR
mbed_official 159:7130f322cb7e 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
mbed_official 159:7130f322cb7e 47 */
mbed_official 159:7130f322cb7e 48 typedef struct {
mbed_official 159:7130f322cb7e 49 uint32_t mask;
mbed_official 159:7130f322cb7e 50 __IO uint32_t *reg_in;
mbed_official 159:7130f322cb7e 51 __IO uint32_t *reg_set;
mbed_official 159:7130f322cb7e 52 __IO uint32_t *reg_clr;
mbed_official 159:7130f322cb7e 53 PinName pin;
mbed_official 159:7130f322cb7e 54 GPIO_TypeDef *gpio;
mbed_official 159:7130f322cb7e 55 uint32_t ll_pin;
mbed_official 159:7130f322cb7e 56 } gpio_t;
mbed_official 159:7130f322cb7e 57
mbed_official 159:7130f322cb7e 58 static inline void gpio_write(gpio_t *obj, int value)
mbed_official 159:7130f322cb7e 59 {
mbed_official 159:7130f322cb7e 60 if (value) {
mbed_official 159:7130f322cb7e 61 *obj->reg_set = obj->mask;
mbed_official 159:7130f322cb7e 62 } else {
mbed_official 159:7130f322cb7e 63 #ifdef GPIO_IP_WITHOUT_BRR
mbed_official 159:7130f322cb7e 64 *obj->reg_clr = obj->mask << 16;
mbed_official 159:7130f322cb7e 65 #else
mbed_official 159:7130f322cb7e 66 *obj->reg_clr = obj->mask;
mbed_official 159:7130f322cb7e 67 #endif
mbed_official 159:7130f322cb7e 68 }
mbed_official 159:7130f322cb7e 69 }
mbed_official 159:7130f322cb7e 70
mbed_official 159:7130f322cb7e 71 static inline int gpio_read(gpio_t *obj)
mbed_official 159:7130f322cb7e 72 {
mbed_official 159:7130f322cb7e 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
mbed_official 159:7130f322cb7e 74 }
mbed_official 159:7130f322cb7e 75
mbed_official 159:7130f322cb7e 76 static inline int gpio_is_connected(const gpio_t *obj)
mbed_official 159:7130f322cb7e 77 {
mbed_official 159:7130f322cb7e 78 return obj->pin != (PinName)NC;
mbed_official 159:7130f322cb7e 79 }
mbed_official 159:7130f322cb7e 80
mbed_official 159:7130f322cb7e 81
mbed_official 159:7130f322cb7e 82 #ifdef __cplusplus
mbed_official 159:7130f322cb7e 83 }
mbed_official 159:7130f322cb7e 84 #endif
mbed_official 159:7130f322cb7e 85
mbed_official 159:7130f322cb7e 86 #endif