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targets/hal/TARGET_Freescale/TARGET_K20XX/gpio_object.h@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2015 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #ifndef MBED_GPIO_OBJECT_H
bogdanm 0:9b334a45a8ff 17 #define MBED_GPIO_OBJECT_H
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 #ifdef __cplusplus
bogdanm 0:9b334a45a8ff 22 extern "C" {
bogdanm 0:9b334a45a8ff 23 #endif
bogdanm 0:9b334a45a8ff 24
bogdanm 0:9b334a45a8ff 25 typedef struct {
bogdanm 0:9b334a45a8ff 26 PinName pin;
bogdanm 0:9b334a45a8ff 27 uint32_t mask;
bogdanm 0:9b334a45a8ff 28 __IO uint32_t *reg_dir;
bogdanm 0:9b334a45a8ff 29 __IO uint32_t *reg_set;
bogdanm 0:9b334a45a8ff 30 __IO uint32_t *reg_clr;
bogdanm 0:9b334a45a8ff 31 __I uint32_t *reg_in;
bogdanm 0:9b334a45a8ff 32 } gpio_t;
bogdanm 0:9b334a45a8ff 33
bogdanm 0:9b334a45a8ff 34 static inline void gpio_write(gpio_t *obj, int value) {
bogdanm 0:9b334a45a8ff 35 MBED_ASSERT(obj->pin != (PinName)NC);
bogdanm 0:9b334a45a8ff 36 if (value) {
bogdanm 0:9b334a45a8ff 37 *obj->reg_set = obj->mask;
bogdanm 0:9b334a45a8ff 38 } else {
bogdanm 0:9b334a45a8ff 39 *obj->reg_clr = obj->mask;
bogdanm 0:9b334a45a8ff 40 }
bogdanm 0:9b334a45a8ff 41 }
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 static inline int gpio_read(gpio_t *obj) {
bogdanm 0:9b334a45a8ff 44 MBED_ASSERT(obj->pin != (PinName)NC);
bogdanm 0:9b334a45a8ff 45 return ((*obj->reg_in & obj->mask) ? 1 : 0);
bogdanm 0:9b334a45a8ff 46 }
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 static inline int gpio_is_connected(const gpio_t *obj) {
bogdanm 0:9b334a45a8ff 49 return obj->pin != (PinName)NC;
bogdanm 0:9b334a45a8ff 50 }
bogdanm 0:9b334a45a8ff 51
bogdanm 0:9b334a45a8ff 52 #ifdef __cplusplus
bogdanm 0:9b334a45a8ff 53 }
bogdanm 0:9b334a45a8ff 54 #endif
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 #endif