lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F3/gpio_object.h@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
544:1af5f1c39e80 
l053

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 125:23cc3068a9e4 1 /* mbed Microcontroller Library
mbed_official 125:23cc3068a9e4 2 *******************************************************************************
mbed_official 125:23cc3068a9e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 125:23cc3068a9e4 4 * All rights reserved.
mbed_official 125:23cc3068a9e4 5 *
mbed_official 125:23cc3068a9e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 125:23cc3068a9e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 125:23cc3068a9e4 8 *
mbed_official 125:23cc3068a9e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 125:23cc3068a9e4 10 * this list of conditions and the following disclaimer.
mbed_official 125:23cc3068a9e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 125:23cc3068a9e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 125:23cc3068a9e4 13 * and/or other materials provided with the distribution.
mbed_official 125:23cc3068a9e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 125:23cc3068a9e4 15 * may be used to endorse or promote products derived from this software
mbed_official 125:23cc3068a9e4 16 * without specific prior written permission.
mbed_official 125:23cc3068a9e4 17 *
mbed_official 125:23cc3068a9e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 125:23cc3068a9e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 125:23cc3068a9e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 125:23cc3068a9e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 125:23cc3068a9e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 125:23cc3068a9e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 125:23cc3068a9e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 125:23cc3068a9e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 125:23cc3068a9e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 125:23cc3068a9e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 125:23cc3068a9e4 28 *******************************************************************************
mbed_official 125:23cc3068a9e4 29 */
mbed_official 125:23cc3068a9e4 30 #ifndef MBED_GPIO_OBJECT_H
mbed_official 125:23cc3068a9e4 31 #define MBED_GPIO_OBJECT_H
mbed_official 125:23cc3068a9e4 32
mbed_official 227:7bd0639b8911 33 #include "mbed_assert.h"
mbed_official 125:23cc3068a9e4 34 #include "cmsis.h"
mbed_official 125:23cc3068a9e4 35 #include "PortNames.h"
mbed_official 125:23cc3068a9e4 36 #include "PeripheralNames.h"
mbed_official 125:23cc3068a9e4 37 #include "PinNames.h"
mbed_official 125:23cc3068a9e4 38
mbed_official 125:23cc3068a9e4 39 #ifdef __cplusplus
mbed_official 125:23cc3068a9e4 40 extern "C" {
mbed_official 125:23cc3068a9e4 41 #endif
mbed_official 125:23cc3068a9e4 42
mbed_official 125:23cc3068a9e4 43 typedef struct {
mbed_official 125:23cc3068a9e4 44 PinName pin;
mbed_official 125:23cc3068a9e4 45 uint32_t mask;
mbed_official 330:c80ac197fa6a 46 __IO uint32_t *reg_in;
mbed_official 330:c80ac197fa6a 47 __IO uint16_t *reg_set;
mbed_official 125:23cc3068a9e4 48 __IO uint16_t *reg_clr;
mbed_official 125:23cc3068a9e4 49 } gpio_t;
mbed_official 125:23cc3068a9e4 50
mbed_official 330:c80ac197fa6a 51 static inline void gpio_write(gpio_t *obj, int value)
mbed_official 330:c80ac197fa6a 52 {
mbed_official 227:7bd0639b8911 53 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 125:23cc3068a9e4 54 if (value) {
mbed_official 125:23cc3068a9e4 55 *obj->reg_set = obj->mask;
mbed_official 135:067cc8ba23da 56 } else {
mbed_official 125:23cc3068a9e4 57 *obj->reg_clr = obj->mask;
mbed_official 125:23cc3068a9e4 58 }
mbed_official 125:23cc3068a9e4 59 }
mbed_official 125:23cc3068a9e4 60
mbed_official 330:c80ac197fa6a 61 static inline int gpio_read(gpio_t *obj)
mbed_official 330:c80ac197fa6a 62 {
mbed_official 227:7bd0639b8911 63 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 125:23cc3068a9e4 64 return ((*obj->reg_in & obj->mask) ? 1 : 0);
mbed_official 125:23cc3068a9e4 65 }
mbed_official 125:23cc3068a9e4 66
mbed_official 544:1af5f1c39e80 67 static inline int gpio_is_connected(const gpio_t *obj)
mbed_official 544:1af5f1c39e80 68 {
mbed_official 461:b90c5392bbcd 69 return obj->pin != (PinName)NC;
mbed_official 461:b90c5392bbcd 70 }
mbed_official 461:b90c5392bbcd 71
mbed_official 125:23cc3068a9e4 72 #ifdef __cplusplus
mbed_official 125:23cc3068a9e4 73 }
mbed_official 125:23cc3068a9e4 74 #endif
mbed_official 125:23cc3068a9e4 75
mbed_official 125:23cc3068a9e4 76 #endif