mbed official / mbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Dependents:   hello SerialTestv11 SerialTestv12 Sierpinski ... more

mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

TARGET_DISCO_L475VG_IOT01A/TARGET_STM/gpio_object.h@147:a97add6d7e64, 2017-07-19 (annotated)

Committer:
Kojto
Date:
Wed Jul 19 16:46:19 2017 +0100
Revision:
147:a97add6d7e64
Parent:
145:64910690c574 
Release 147 of the mbed library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 145:64910690c574 1 /* mbed Microcontroller Library
AnnaBridge 145:64910690c574 2 *******************************************************************************
AnnaBridge 145:64910690c574 3 * Copyright (c) 2016, STMicroelectronics
AnnaBridge 145:64910690c574 4 * All rights reserved.
AnnaBridge 145:64910690c574 5 *
AnnaBridge 145:64910690c574 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 145:64910690c574 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 145:64910690c574 8 *
AnnaBridge 145:64910690c574 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 145:64910690c574 10 * this list of conditions and the following disclaimer.
AnnaBridge 145:64910690c574 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 145:64910690c574 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 145:64910690c574 13 * and/or other materials provided with the distribution.
AnnaBridge 145:64910690c574 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 145:64910690c574 15 * may be used to endorse or promote products derived from this software
AnnaBridge 145:64910690c574 16 * without specific prior written permission.
AnnaBridge 145:64910690c574 17 *
AnnaBridge 145:64910690c574 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 145:64910690c574 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 145:64910690c574 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 145:64910690c574 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 145:64910690c574 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 145:64910690c574 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 145:64910690c574 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 145:64910690c574 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 145:64910690c574 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 145:64910690c574 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 145:64910690c574 28 *******************************************************************************
AnnaBridge 145:64910690c574 29 */
AnnaBridge 145:64910690c574 30 #ifndef MBED_GPIO_OBJECT_H
AnnaBridge 145:64910690c574 31 #define MBED_GPIO_OBJECT_H
AnnaBridge 145:64910690c574 32
AnnaBridge 145:64910690c574 33 #include "mbed_assert.h"
AnnaBridge 145:64910690c574 34 #include "cmsis.h"
AnnaBridge 145:64910690c574 35 #include "PortNames.h"
AnnaBridge 145:64910690c574 36 #include "PeripheralNames.h"
AnnaBridge 145:64910690c574 37 #include "PinNames.h"
AnnaBridge 145:64910690c574 38
AnnaBridge 145:64910690c574 39 #ifdef __cplusplus
AnnaBridge 145:64910690c574 40 extern "C" {
AnnaBridge 145:64910690c574 41 #endif
AnnaBridge 145:64910690c574 42
AnnaBridge 145:64910690c574 43 /*
AnnaBridge 145:64910690c574 44 * Note: reg_clr might actually be same as reg_set.
AnnaBridge 145:64910690c574 45 * Depends on family whether BRR is available on top of BSRR
AnnaBridge 145:64910690c574 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
AnnaBridge 145:64910690c574 47 */
AnnaBridge 145:64910690c574 48 typedef struct {
AnnaBridge 145:64910690c574 49 uint32_t mask;
AnnaBridge 145:64910690c574 50 __IO uint32_t *reg_in;
AnnaBridge 145:64910690c574 51 __IO uint32_t *reg_set;
AnnaBridge 145:64910690c574 52 __IO uint32_t *reg_clr;
AnnaBridge 145:64910690c574 53 PinName pin;
AnnaBridge 145:64910690c574 54 GPIO_TypeDef *gpio;
AnnaBridge 145:64910690c574 55 uint32_t ll_pin;
AnnaBridge 145:64910690c574 56 } gpio_t;
AnnaBridge 145:64910690c574 57
AnnaBridge 145:64910690c574 58 static inline void gpio_write(gpio_t *obj, int value)
AnnaBridge 145:64910690c574 59 {
AnnaBridge 145:64910690c574 60 if (value) {
AnnaBridge 145:64910690c574 61 *obj->reg_set = obj->mask;
AnnaBridge 145:64910690c574 62 } else {
AnnaBridge 145:64910690c574 63 #ifdef GPIO_IP_WITHOUT_BRR
AnnaBridge 145:64910690c574 64 *obj->reg_clr = obj->mask << 16;
AnnaBridge 145:64910690c574 65 #else
AnnaBridge 145:64910690c574 66 *obj->reg_clr = obj->mask;
AnnaBridge 145:64910690c574 67 #endif
AnnaBridge 145:64910690c574 68 }
AnnaBridge 145:64910690c574 69 }
AnnaBridge 145:64910690c574 70
AnnaBridge 145:64910690c574 71 static inline int gpio_read(gpio_t *obj)
AnnaBridge 145:64910690c574 72 {
AnnaBridge 145:64910690c574 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
AnnaBridge 145:64910690c574 74 }
AnnaBridge 145:64910690c574 75
AnnaBridge 145:64910690c574 76 static inline int gpio_is_connected(const gpio_t *obj)
AnnaBridge 145:64910690c574 77 {
AnnaBridge 145:64910690c574 78 return obj->pin != (PinName)NC;
AnnaBridge 145:64910690c574 79 }
AnnaBridge 145:64910690c574 80
AnnaBridge 145:64910690c574 81
AnnaBridge 145:64910690c574 82 #ifdef __cplusplus
AnnaBridge 145:64910690c574 83 }
AnnaBridge 145:64910690c574 84 #endif
AnnaBridge 145:64910690c574 85
AnnaBridge 145:64910690c574 86 #endif