b luo / mbed-dev

mbed library sources. With a patch for the can_api

Fork of mbed-dev by mbed official

targets/TARGET_STM/TARGET_STM32L4/gpio_object.h@151:91825d030f9b, 2016-11-14 (annotated)

Committer:
DangerousElectrician
Date:
Mon Nov 14 04:39:23 2016 +0000
Revision:
151:91825d030f9b
Parent:
149:156823d33999 
stuff changed?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 *******************************************************************************
<> 144:ef7eb2e8f9f7 3 * Copyright (c) 2015, STMicroelectronics
<> 144:ef7eb2e8f9f7 4 * All rights reserved.
<> 144:ef7eb2e8f9f7 5 *
<> 144:ef7eb2e8f9f7 6 * Redistribution and use in source and binary forms, with or without
<> 144:ef7eb2e8f9f7 7 * modification, are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 8 *
<> 144:ef7eb2e8f9f7 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 10 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 12 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 13 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 15 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 16 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 17 *
<> 144:ef7eb2e8f9f7 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 28 *******************************************************************************
<> 144:ef7eb2e8f9f7 29 */
<> 144:ef7eb2e8f9f7 30 #ifndef MBED_GPIO_OBJECT_H
<> 144:ef7eb2e8f9f7 31 #define MBED_GPIO_OBJECT_H
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 #include "mbed_assert.h"
<> 144:ef7eb2e8f9f7 34 #include "cmsis.h"
<> 144:ef7eb2e8f9f7 35 #include "PortNames.h"
<> 144:ef7eb2e8f9f7 36 #include "PeripheralNames.h"
<> 144:ef7eb2e8f9f7 37 #include "PinNames.h"
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 40 extern "C" {
<> 144:ef7eb2e8f9f7 41 #endif
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 typedef struct {
<> 144:ef7eb2e8f9f7 44 PinName pin;
<> 144:ef7eb2e8f9f7 45 uint32_t mask;
<> 144:ef7eb2e8f9f7 46 __IO uint32_t *reg_in;
<> 144:ef7eb2e8f9f7 47 __IO uint32_t *reg_set;
<> 144:ef7eb2e8f9f7 48 __IO uint32_t *reg_clr;
<> 144:ef7eb2e8f9f7 49 } gpio_t;
<> 144:ef7eb2e8f9f7 50
<> 144:ef7eb2e8f9f7 51 static inline void gpio_write(gpio_t *obj, int value)
<> 144:ef7eb2e8f9f7 52 {
<> 144:ef7eb2e8f9f7 53 MBED_ASSERT(obj->pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 54 if (value) {
<> 144:ef7eb2e8f9f7 55 *obj->reg_set = obj->mask;
<> 144:ef7eb2e8f9f7 56 } else {
<> 144:ef7eb2e8f9f7 57 *obj->reg_clr = obj->mask;
<> 144:ef7eb2e8f9f7 58 }
<> 144:ef7eb2e8f9f7 59 }
<> 144:ef7eb2e8f9f7 60
<> 144:ef7eb2e8f9f7 61 static inline int gpio_read(gpio_t *obj)
<> 144:ef7eb2e8f9f7 62 {
<> 144:ef7eb2e8f9f7 63 MBED_ASSERT(obj->pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 64 return ((*obj->reg_in & obj->mask) ? 1 : 0);
<> 144:ef7eb2e8f9f7 65 }
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 static inline int gpio_is_connected(const gpio_t *obj)
<> 144:ef7eb2e8f9f7 68 {
<> 144:ef7eb2e8f9f7 69 return obj->pin != (PinName)NC;
<> 144:ef7eb2e8f9f7 70 }
<> 144:ef7eb2e8f9f7 71
<> 144:ef7eb2e8f9f7 72 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 73 }
<> 144:ef7eb2e8f9f7 74 #endif
<> 144:ef7eb2e8f9f7 75
<> 144:ef7eb2e8f9f7 76 #endif