Gan likun / mbed1-dev

001

targets/TARGET_STM/gpio_object.h@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /* mbed Microcontroller Library
ganlikun 0:13413ea9a877 2 *******************************************************************************
ganlikun 0:13413ea9a877 3 * Copyright (c) 2016, STMicroelectronics
ganlikun 0:13413ea9a877 4 * All rights reserved.
ganlikun 0:13413ea9a877 5 *
ganlikun 0:13413ea9a877 6 * Redistribution and use in source and binary forms, with or without
ganlikun 0:13413ea9a877 7 * modification, are permitted provided that the following conditions are met:
ganlikun 0:13413ea9a877 8 *
ganlikun 0:13413ea9a877 9 * 1. Redistributions of source code must retain the above copyright notice,
ganlikun 0:13413ea9a877 10 * this list of conditions and the following disclaimer.
ganlikun 0:13413ea9a877 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
ganlikun 0:13413ea9a877 12 * this list of conditions and the following disclaimer in the documentation
ganlikun 0:13413ea9a877 13 * and/or other materials provided with the distribution.
ganlikun 0:13413ea9a877 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
ganlikun 0:13413ea9a877 15 * may be used to endorse or promote products derived from this software
ganlikun 0:13413ea9a877 16 * without specific prior written permission.
ganlikun 0:13413ea9a877 17 *
ganlikun 0:13413ea9a877 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
ganlikun 0:13413ea9a877 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
ganlikun 0:13413ea9a877 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ganlikun 0:13413ea9a877 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
ganlikun 0:13413ea9a877 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
ganlikun 0:13413ea9a877 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
ganlikun 0:13413ea9a877 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
ganlikun 0:13413ea9a877 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ganlikun 0:13413ea9a877 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
ganlikun 0:13413ea9a877 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ganlikun 0:13413ea9a877 28 *******************************************************************************
ganlikun 0:13413ea9a877 29 */
ganlikun 0:13413ea9a877 30 #ifndef MBED_GPIO_OBJECT_H
ganlikun 0:13413ea9a877 31 #define MBED_GPIO_OBJECT_H
ganlikun 0:13413ea9a877 32
ganlikun 0:13413ea9a877 33 #include "mbed_assert.h"
ganlikun 0:13413ea9a877 34 #include "cmsis.h"
ganlikun 0:13413ea9a877 35 #include "PortNames.h"
ganlikun 0:13413ea9a877 36 #include "PeripheralNames.h"
ganlikun 0:13413ea9a877 37 #include "PinNames.h"
ganlikun 0:13413ea9a877 38
ganlikun 0:13413ea9a877 39 #ifdef __cplusplus
ganlikun 0:13413ea9a877 40 extern "C" {
ganlikun 0:13413ea9a877 41 #endif
ganlikun 0:13413ea9a877 42
ganlikun 0:13413ea9a877 43 /*
ganlikun 0:13413ea9a877 44 * Note: reg_clr might actually be same as reg_set.
ganlikun 0:13413ea9a877 45 * Depends on family whether BRR is available on top of BSRR
ganlikun 0:13413ea9a877 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
ganlikun 0:13413ea9a877 47 */
ganlikun 0:13413ea9a877 48 typedef struct {
ganlikun 0:13413ea9a877 49 uint32_t mask;
ganlikun 0:13413ea9a877 50 __IO uint32_t *reg_in;
ganlikun 0:13413ea9a877 51 __IO uint32_t *reg_set;
ganlikun 0:13413ea9a877 52 __IO uint32_t *reg_clr;
ganlikun 0:13413ea9a877 53 PinName pin;
ganlikun 0:13413ea9a877 54 GPIO_TypeDef *gpio;
ganlikun 0:13413ea9a877 55 uint32_t ll_pin;
ganlikun 0:13413ea9a877 56 } gpio_t;
ganlikun 0:13413ea9a877 57
ganlikun 0:13413ea9a877 58 static inline void gpio_write(gpio_t *obj, int value)
ganlikun 0:13413ea9a877 59 {
ganlikun 0:13413ea9a877 60 if (value) {
ganlikun 0:13413ea9a877 61 *obj->reg_set = obj->mask;
ganlikun 0:13413ea9a877 62 } else {
ganlikun 0:13413ea9a877 63 #ifdef GPIO_IP_WITHOUT_BRR
ganlikun 0:13413ea9a877 64 *obj->reg_clr = obj->mask << 16;
ganlikun 0:13413ea9a877 65 #else
ganlikun 0:13413ea9a877 66 *obj->reg_clr = obj->mask;
ganlikun 0:13413ea9a877 67 #endif
ganlikun 0:13413ea9a877 68 }
ganlikun 0:13413ea9a877 69 }
ganlikun 0:13413ea9a877 70
ganlikun 0:13413ea9a877 71 static inline int gpio_read(gpio_t *obj)
ganlikun 0:13413ea9a877 72 {
ganlikun 0:13413ea9a877 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
ganlikun 0:13413ea9a877 74 }
ganlikun 0:13413ea9a877 75
ganlikun 0:13413ea9a877 76 static inline int gpio_is_connected(const gpio_t *obj)
ganlikun 0:13413ea9a877 77 {
ganlikun 0:13413ea9a877 78 return obj->pin != (PinName)NC;
ganlikun 0:13413ea9a877 79 }
ganlikun 0:13413ea9a877 80
ganlikun 0:13413ea9a877 81
ganlikun 0:13413ea9a877 82 #ifdef __cplusplus
ganlikun 0:13413ea9a877 83 }
ganlikun 0:13413ea9a877 84 #endif
ganlikun 0:13413ea9a877 85
ganlikun 0:13413ea9a877 86 #endif
ganlikun 0:13413ea9a877 87