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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_NUCLEO_L496ZG_P/TOOLCHAIN_IAR/gpio_object.h@171:3a7713b1edbc, 2018-11-08 (annotated)

Committer:
AnnaBridge
Date:
Thu Nov 08 11:45:42 2018 +0000
Revision:
171:3a7713b1edbc
Parent:
TARGET_NUCLEO_F413ZH/TARGET_STM/gpio_object.h@160:5571c4ff569f 
mbed library. Release version 164

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Anna Bridge 160:5571c4ff569f 1 /* mbed Microcontroller Library
Anna Bridge 160:5571c4ff569f 2 *******************************************************************************
Anna Bridge 160:5571c4ff569f 3 * Copyright (c) 2016, STMicroelectronics
Anna Bridge 160:5571c4ff569f 4 * All rights reserved.
Anna Bridge 160:5571c4ff569f 5 *
Anna Bridge 160:5571c4ff569f 6 * Redistribution and use in source and binary forms, with or without
Anna Bridge 160:5571c4ff569f 7 * modification, are permitted provided that the following conditions are met:
Anna Bridge 160:5571c4ff569f 8 *
Anna Bridge 160:5571c4ff569f 9 * 1. Redistributions of source code must retain the above copyright notice,
Anna Bridge 160:5571c4ff569f 10 * this list of conditions and the following disclaimer.
Anna Bridge 160:5571c4ff569f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
Anna Bridge 160:5571c4ff569f 12 * this list of conditions and the following disclaimer in the documentation
Anna Bridge 160:5571c4ff569f 13 * and/or other materials provided with the distribution.
Anna Bridge 160:5571c4ff569f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
Anna Bridge 160:5571c4ff569f 15 * may be used to endorse or promote products derived from this software
Anna Bridge 160:5571c4ff569f 16 * without specific prior written permission.
Anna Bridge 160:5571c4ff569f 17 *
Anna Bridge 160:5571c4ff569f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Anna Bridge 160:5571c4ff569f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Anna Bridge 160:5571c4ff569f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Anna Bridge 160:5571c4ff569f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
Anna Bridge 160:5571c4ff569f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
Anna Bridge 160:5571c4ff569f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
Anna Bridge 160:5571c4ff569f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
Anna Bridge 160:5571c4ff569f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
Anna Bridge 160:5571c4ff569f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Anna Bridge 160:5571c4ff569f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Anna Bridge 160:5571c4ff569f 28 *******************************************************************************
Anna Bridge 160:5571c4ff569f 29 */
Anna Bridge 160:5571c4ff569f 30 #ifndef MBED_GPIO_OBJECT_H
Anna Bridge 160:5571c4ff569f 31 #define MBED_GPIO_OBJECT_H
Anna Bridge 160:5571c4ff569f 32
Anna Bridge 160:5571c4ff569f 33 #include "mbed_assert.h"
Anna Bridge 160:5571c4ff569f 34 #include "cmsis.h"
Anna Bridge 160:5571c4ff569f 35 #include "PortNames.h"
Anna Bridge 160:5571c4ff569f 36 #include "PeripheralNames.h"
Anna Bridge 160:5571c4ff569f 37 #include "PinNames.h"
Anna Bridge 160:5571c4ff569f 38
Anna Bridge 160:5571c4ff569f 39 #ifdef __cplusplus
Anna Bridge 160:5571c4ff569f 40 extern "C" {
Anna Bridge 160:5571c4ff569f 41 #endif
Anna Bridge 160:5571c4ff569f 42
Anna Bridge 160:5571c4ff569f 43 /*
Anna Bridge 160:5571c4ff569f 44 * Note: reg_clr might actually be same as reg_set.
Anna Bridge 160:5571c4ff569f 45 * Depends on family whether BRR is available on top of BSRR
Anna Bridge 160:5571c4ff569f 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
Anna Bridge 160:5571c4ff569f 47 */
Anna Bridge 160:5571c4ff569f 48 typedef struct {
Anna Bridge 160:5571c4ff569f 49 uint32_t mask;
Anna Bridge 160:5571c4ff569f 50 __IO uint32_t *reg_in;
Anna Bridge 160:5571c4ff569f 51 __IO uint32_t *reg_set;
Anna Bridge 160:5571c4ff569f 52 __IO uint32_t *reg_clr;
Anna Bridge 160:5571c4ff569f 53 PinName pin;
Anna Bridge 160:5571c4ff569f 54 GPIO_TypeDef *gpio;
Anna Bridge 160:5571c4ff569f 55 uint32_t ll_pin;
Anna Bridge 160:5571c4ff569f 56 } gpio_t;
Anna Bridge 160:5571c4ff569f 57
Anna Bridge 160:5571c4ff569f 58 static inline void gpio_write(gpio_t *obj, int value)
Anna Bridge 160:5571c4ff569f 59 {
Anna Bridge 160:5571c4ff569f 60 if (value) {
Anna Bridge 160:5571c4ff569f 61 *obj->reg_set = obj->mask;
Anna Bridge 160:5571c4ff569f 62 } else {
Anna Bridge 160:5571c4ff569f 63 #ifdef GPIO_IP_WITHOUT_BRR
Anna Bridge 160:5571c4ff569f 64 *obj->reg_clr = obj->mask << 16;
Anna Bridge 160:5571c4ff569f 65 #else
Anna Bridge 160:5571c4ff569f 66 *obj->reg_clr = obj->mask;
Anna Bridge 160:5571c4ff569f 67 #endif
Anna Bridge 160:5571c4ff569f 68 }
Anna Bridge 160:5571c4ff569f 69 }
Anna Bridge 160:5571c4ff569f 70
Anna Bridge 160:5571c4ff569f 71 static inline int gpio_read(gpio_t *obj)
Anna Bridge 160:5571c4ff569f 72 {
Anna Bridge 160:5571c4ff569f 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
Anna Bridge 160:5571c4ff569f 74 }
Anna Bridge 160:5571c4ff569f 75
Anna Bridge 160:5571c4ff569f 76 static inline int gpio_is_connected(const gpio_t *obj)
Anna Bridge 160:5571c4ff569f 77 {
Anna Bridge 160:5571c4ff569f 78 return obj->pin != (PinName)NC;
Anna Bridge 160:5571c4ff569f 79 }
Anna Bridge 160:5571c4ff569f 80
Anna Bridge 160:5571c4ff569f 81
Anna Bridge 160:5571c4ff569f 82 #ifdef __cplusplus
Anna Bridge 160:5571c4ff569f 83 }
Anna Bridge 160:5571c4ff569f 84 #endif
Anna Bridge 160:5571c4ff569f 85
Anna Bridge 160:5571c4ff569f 86 #endif