Fawwaz Nadzmy / mbed-src

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targets/hal/TARGET_STM/TARGET_STM32F4/gpio_object.h@636:de8f3520e5c1, 2016-12-21 (annotated)

Committer:
fwndz
Date:
Wed Dec 21 12:47:52 2016 +0000
Revision:
636:de8f3520e5c1
Parent:
532:fe11edbda85c 
init

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 235:685d5f11838f 1 /* mbed Microcontroller Library
mbed_official 235:685d5f11838f 2 *******************************************************************************
mbed_official 235:685d5f11838f 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 235:685d5f11838f 4 * All rights reserved.
mbed_official 235:685d5f11838f 5 *
mbed_official 235:685d5f11838f 6 * Redistribution and use in source and binary forms, with or without
mbed_official 235:685d5f11838f 7 * modification, are permitted provided that the following conditions are met:
mbed_official 235:685d5f11838f 8 *
mbed_official 235:685d5f11838f 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 235:685d5f11838f 10 * this list of conditions and the following disclaimer.
mbed_official 235:685d5f11838f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 235:685d5f11838f 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 235:685d5f11838f 13 * and/or other materials provided with the distribution.
mbed_official 235:685d5f11838f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 235:685d5f11838f 15 * may be used to endorse or promote products derived from this software
mbed_official 235:685d5f11838f 16 * without specific prior written permission.
mbed_official 235:685d5f11838f 17 *
mbed_official 235:685d5f11838f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 235:685d5f11838f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 235:685d5f11838f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 235:685d5f11838f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 235:685d5f11838f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 235:685d5f11838f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 235:685d5f11838f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 235:685d5f11838f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 235:685d5f11838f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 235:685d5f11838f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 235:685d5f11838f 28 *******************************************************************************
mbed_official 235:685d5f11838f 29 */
mbed_official 235:685d5f11838f 30 #ifndef MBED_GPIO_OBJECT_H
mbed_official 235:685d5f11838f 31 #define MBED_GPIO_OBJECT_H
mbed_official 235:685d5f11838f 32
mbed_official 235:685d5f11838f 33 #include "mbed_assert.h"
mbed_official 235:685d5f11838f 34 #include "cmsis.h"
mbed_official 235:685d5f11838f 35 #include "PortNames.h"
mbed_official 235:685d5f11838f 36 #include "PeripheralNames.h"
mbed_official 235:685d5f11838f 37 #include "PinNames.h"
mbed_official 235:685d5f11838f 38
mbed_official 235:685d5f11838f 39 #ifdef __cplusplus
mbed_official 235:685d5f11838f 40 extern "C" {
mbed_official 235:685d5f11838f 41 #endif
mbed_official 235:685d5f11838f 42
mbed_official 235:685d5f11838f 43 typedef struct {
mbed_official 235:685d5f11838f 44 PinName pin;
mbed_official 235:685d5f11838f 45 uint32_t mask;
mbed_official 235:685d5f11838f 46 __IO uint32_t *reg_in;
mbed_official 532:fe11edbda85c 47 __IO uint32_t *reg_set_clr;
mbed_official 235:685d5f11838f 48 } gpio_t;
mbed_official 235:685d5f11838f 49
mbed_official 235:685d5f11838f 50 static inline void gpio_write(gpio_t *obj, int value)
mbed_official 235:685d5f11838f 51 {
mbed_official 235:685d5f11838f 52 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 235:685d5f11838f 53 if (value) {
mbed_official 532:fe11edbda85c 54 *obj->reg_set_clr = obj->mask;
mbed_official 235:685d5f11838f 55 } else {
mbed_official 532:fe11edbda85c 56 *obj->reg_set_clr = obj->mask << 16;
mbed_official 235:685d5f11838f 57 }
mbed_official 235:685d5f11838f 58 }
mbed_official 235:685d5f11838f 59
mbed_official 235:685d5f11838f 60 static inline int gpio_read(gpio_t *obj)
mbed_official 235:685d5f11838f 61 {
mbed_official 235:685d5f11838f 62 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 235:685d5f11838f 63 return ((*obj->reg_in & obj->mask) ? 1 : 0);
mbed_official 235:685d5f11838f 64 }
mbed_official 235:685d5f11838f 65
mbed_official 455:8bc3a354916d 66 static inline int gpio_is_connected(const gpio_t *obj) {
mbed_official 455:8bc3a354916d 67 return obj->pin != (PinName)NC;
mbed_official 455:8bc3a354916d 68 }
mbed_official 455:8bc3a354916d 69
mbed_official 235:685d5f11838f 70 #ifdef __cplusplus
mbed_official 235:685d5f11838f 71 }
mbed_official 235:685d5f11838f 72 #endif
mbed_official 235:685d5f11838f 73
mbed_official 235:685d5f11838f 74 #endif