Marco Zecchini / Mbed OS Example_RTOS

Rtos API example

mbed-os/targets/TARGET_STM/gpio_object.h@0:9fca2b23d0ba, 2019-02-23 (annotated)

Committer:
marcozecchini
Date:
Sat Feb 23 12:13:36 2019 +0000
Revision:
0:9fca2b23d0ba
final commit

Who changed what in which revision?

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marcozecchini 0:9fca2b23d0ba 1 /* mbed Microcontroller Library
marcozecchini 0:9fca2b23d0ba 2 *******************************************************************************
marcozecchini 0:9fca2b23d0ba 3 * Copyright (c) 2016, STMicroelectronics
marcozecchini 0:9fca2b23d0ba 4 * All rights reserved.
marcozecchini 0:9fca2b23d0ba 5 *
marcozecchini 0:9fca2b23d0ba 6 * Redistribution and use in source and binary forms, with or without
marcozecchini 0:9fca2b23d0ba 7 * modification, are permitted provided that the following conditions are met:
marcozecchini 0:9fca2b23d0ba 8 *
marcozecchini 0:9fca2b23d0ba 9 * 1. Redistributions of source code must retain the above copyright notice,
marcozecchini 0:9fca2b23d0ba 10 * this list of conditions and the following disclaimer.
marcozecchini 0:9fca2b23d0ba 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
marcozecchini 0:9fca2b23d0ba 12 * this list of conditions and the following disclaimer in the documentation
marcozecchini 0:9fca2b23d0ba 13 * and/or other materials provided with the distribution.
marcozecchini 0:9fca2b23d0ba 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
marcozecchini 0:9fca2b23d0ba 15 * may be used to endorse or promote products derived from this software
marcozecchini 0:9fca2b23d0ba 16 * without specific prior written permission.
marcozecchini 0:9fca2b23d0ba 17 *
marcozecchini 0:9fca2b23d0ba 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
marcozecchini 0:9fca2b23d0ba 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
marcozecchini 0:9fca2b23d0ba 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
marcozecchini 0:9fca2b23d0ba 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
marcozecchini 0:9fca2b23d0ba 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
marcozecchini 0:9fca2b23d0ba 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
marcozecchini 0:9fca2b23d0ba 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
marcozecchini 0:9fca2b23d0ba 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
marcozecchini 0:9fca2b23d0ba 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
marcozecchini 0:9fca2b23d0ba 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
marcozecchini 0:9fca2b23d0ba 28 *******************************************************************************
marcozecchini 0:9fca2b23d0ba 29 */
marcozecchini 0:9fca2b23d0ba 30 #ifndef MBED_GPIO_OBJECT_H
marcozecchini 0:9fca2b23d0ba 31 #define MBED_GPIO_OBJECT_H
marcozecchini 0:9fca2b23d0ba 32
marcozecchini 0:9fca2b23d0ba 33 #include "mbed_assert.h"
marcozecchini 0:9fca2b23d0ba 34 #include "cmsis.h"
marcozecchini 0:9fca2b23d0ba 35 #include "PortNames.h"
marcozecchini 0:9fca2b23d0ba 36 #include "PeripheralNames.h"
marcozecchini 0:9fca2b23d0ba 37 #include "PinNames.h"
marcozecchini 0:9fca2b23d0ba 38
marcozecchini 0:9fca2b23d0ba 39 #ifdef __cplusplus
marcozecchini 0:9fca2b23d0ba 40 extern "C" {
marcozecchini 0:9fca2b23d0ba 41 #endif
marcozecchini 0:9fca2b23d0ba 42
marcozecchini 0:9fca2b23d0ba 43 /*
marcozecchini 0:9fca2b23d0ba 44 * Note: reg_clr might actually be same as reg_set.
marcozecchini 0:9fca2b23d0ba 45 * Depends on family whether BRR is available on top of BSRR
marcozecchini 0:9fca2b23d0ba 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
marcozecchini 0:9fca2b23d0ba 47 */
marcozecchini 0:9fca2b23d0ba 48 typedef struct {
marcozecchini 0:9fca2b23d0ba 49 uint32_t mask;
marcozecchini 0:9fca2b23d0ba 50 __IO uint32_t *reg_in;
marcozecchini 0:9fca2b23d0ba 51 __IO uint32_t *reg_set;
marcozecchini 0:9fca2b23d0ba 52 __IO uint32_t *reg_clr;
marcozecchini 0:9fca2b23d0ba 53 PinName pin;
marcozecchini 0:9fca2b23d0ba 54 GPIO_TypeDef *gpio;
marcozecchini 0:9fca2b23d0ba 55 uint32_t ll_pin;
marcozecchini 0:9fca2b23d0ba 56 } gpio_t;
marcozecchini 0:9fca2b23d0ba 57
marcozecchini 0:9fca2b23d0ba 58 static inline void gpio_write(gpio_t *obj, int value)
marcozecchini 0:9fca2b23d0ba 59 {
marcozecchini 0:9fca2b23d0ba 60 if (value) {
marcozecchini 0:9fca2b23d0ba 61 *obj->reg_set = obj->mask;
marcozecchini 0:9fca2b23d0ba 62 } else {
marcozecchini 0:9fca2b23d0ba 63 #ifdef GPIO_IP_WITHOUT_BRR
marcozecchini 0:9fca2b23d0ba 64 *obj->reg_clr = obj->mask << 16;
marcozecchini 0:9fca2b23d0ba 65 #else
marcozecchini 0:9fca2b23d0ba 66 *obj->reg_clr = obj->mask;
marcozecchini 0:9fca2b23d0ba 67 #endif
marcozecchini 0:9fca2b23d0ba 68 }
marcozecchini 0:9fca2b23d0ba 69 }
marcozecchini 0:9fca2b23d0ba 70
marcozecchini 0:9fca2b23d0ba 71 static inline int gpio_read(gpio_t *obj)
marcozecchini 0:9fca2b23d0ba 72 {
marcozecchini 0:9fca2b23d0ba 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
marcozecchini 0:9fca2b23d0ba 74 }
marcozecchini 0:9fca2b23d0ba 75
marcozecchini 0:9fca2b23d0ba 76 static inline int gpio_is_connected(const gpio_t *obj)
marcozecchini 0:9fca2b23d0ba 77 {
marcozecchini 0:9fca2b23d0ba 78 return obj->pin != (PinName)NC;
marcozecchini 0:9fca2b23d0ba 79 }
marcozecchini 0:9fca2b23d0ba 80
marcozecchini 0:9fca2b23d0ba 81
marcozecchini 0:9fca2b23d0ba 82 #ifdef __cplusplus
marcozecchini 0:9fca2b23d0ba 83 }
marcozecchini 0:9fca2b23d0ba 84 #endif
marcozecchini 0:9fca2b23d0ba 85
marcozecchini 0:9fca2b23d0ba 86 #endif