Sertel_Srinath Gopalan / TARGET_LPC1768i2c

myi2c test

TARGET_NXP/TARGET_LPC176X/gpio_object.h@0:559a8e4aab60, 2015-06-29 (annotated)

Committer:
mrsoundhar
Date:
Mon Jun 29 12:59:52 2015 +0000
Revision:
0:559a8e4aab60
i2c

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mrsoundhar 0:559a8e4aab60 1 /* mbed Microcontroller Library
mrsoundhar 0:559a8e4aab60 2 * Copyright (c) 2006-2013 ARM Limited
mrsoundhar 0:559a8e4aab60 3 *
mrsoundhar 0:559a8e4aab60 4 * Licensed under the Apache License, Version 2.0 (the "License");
mrsoundhar 0:559a8e4aab60 5 * you may not use this file except in compliance with the License.
mrsoundhar 0:559a8e4aab60 6 * You may obtain a copy of the License at
mrsoundhar 0:559a8e4aab60 7 *
mrsoundhar 0:559a8e4aab60 8 * http://www.apache.org/licenses/LICENSE-2.0
mrsoundhar 0:559a8e4aab60 9 *
mrsoundhar 0:559a8e4aab60 10 * Unless required by applicable law or agreed to in writing, software
mrsoundhar 0:559a8e4aab60 11 * distributed under the License is distributed on an "AS IS" BASIS,
mrsoundhar 0:559a8e4aab60 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mrsoundhar 0:559a8e4aab60 13 * See the License for the specific language governing permissions and
mrsoundhar 0:559a8e4aab60 14 * limitations under the License.
mrsoundhar 0:559a8e4aab60 15 */
mrsoundhar 0:559a8e4aab60 16 #ifndef MBED_GPIO_OBJECT_H
mrsoundhar 0:559a8e4aab60 17 #define MBED_GPIO_OBJECT_H
mrsoundhar 0:559a8e4aab60 18
mrsoundhar 0:559a8e4aab60 19 #include "mbed_assert.h"
mrsoundhar 0:559a8e4aab60 20
mrsoundhar 0:559a8e4aab60 21 #ifdef __cplusplus
mrsoundhar 0:559a8e4aab60 22 extern "C" {
mrsoundhar 0:559a8e4aab60 23 #endif
mrsoundhar 0:559a8e4aab60 24
mrsoundhar 0:559a8e4aab60 25 typedef struct {
mrsoundhar 0:559a8e4aab60 26 PinName pin;
mrsoundhar 0:559a8e4aab60 27 uint32_t mask;
mrsoundhar 0:559a8e4aab60 28
mrsoundhar 0:559a8e4aab60 29 __IO uint32_t *reg_dir;
mrsoundhar 0:559a8e4aab60 30 __IO uint32_t *reg_set;
mrsoundhar 0:559a8e4aab60 31 __IO uint32_t *reg_clr;
mrsoundhar 0:559a8e4aab60 32 __I uint32_t *reg_in;
mrsoundhar 0:559a8e4aab60 33 } gpio_t;
mrsoundhar 0:559a8e4aab60 34
mrsoundhar 0:559a8e4aab60 35 static inline void gpio_write(gpio_t *obj, int value) {
mrsoundhar 0:559a8e4aab60 36 MBED_ASSERT(obj->pin != (PinName)NC);
mrsoundhar 0:559a8e4aab60 37 if (value)
mrsoundhar 0:559a8e4aab60 38 *obj->reg_set = obj->mask;
mrsoundhar 0:559a8e4aab60 39 else
mrsoundhar 0:559a8e4aab60 40 *obj->reg_clr = obj->mask;
mrsoundhar 0:559a8e4aab60 41 }
mrsoundhar 0:559a8e4aab60 42
mrsoundhar 0:559a8e4aab60 43 static inline int gpio_read(gpio_t *obj) {
mrsoundhar 0:559a8e4aab60 44 MBED_ASSERT(obj->pin != (PinName)NC);
mrsoundhar 0:559a8e4aab60 45 return ((*obj->reg_in & obj->mask) ? 1 : 0);
mrsoundhar 0:559a8e4aab60 46 }
mrsoundhar 0:559a8e4aab60 47
mrsoundhar 0:559a8e4aab60 48 #ifdef __cplusplus
mrsoundhar 0:559a8e4aab60 49 }
mrsoundhar 0:559a8e4aab60 50 #endif
mrsoundhar 0:559a8e4aab60 51
mrsoundhar 0:559a8e4aab60 52 #endif