1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include "gpio_addrdefine.h"
21 uint32_t gpio_set(PinName pin) {
23 return (1 << PINNO(pin));
26 void gpio_init(gpio_t *obj, PinName pin) {
31 obj->mask = gpio_set(pin);
33 group = PINGROUP(pin);
34 if (group > 11) return;
36 obj->reg_set = (volatile uint32_t *) PSR(group);
37 obj->reg_in = (volatile uint32_t *) PPR(group);
38 obj->reg_dir = (volatile uint32_t *)PMSR(group);
39 obj->reg_buf = (volatile uint32_t *)PIBC(group);
42 void gpio_mode(gpio_t *obj, PinMode mode) {
43 /* Pull up and Pull down settings aren't supported because RZ/A1H doesn't have pull up/down for pins(signals). */
46 void gpio_dir(gpio_t *obj, PinDirection direction) {
49 *obj->reg_dir = (obj->mask << 16) | obj->mask;
50 *obj->reg_buf |= obj->mask;
53 *obj->reg_dir = (obj->mask << 16) | 0;
54 *obj->reg_buf &= ~obj->mask;