[270] | 1 | /* mbed Microcontroller Library
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| 2 | * Copyright (c) 2006-2013 ARM Limited
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | #include "gpio_api.h"
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| 17 | #include "pinmap.h"
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| 18 | #include "gpio_addrdefine.h"
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| 19 |
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| 20 |
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| 21 | uint32_t gpio_set(PinName pin) {
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| 22 | pin_function(pin, 0);
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| 23 | return (1 << PINNO(pin));
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| 24 | }
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| 25 |
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| 26 | void gpio_init(gpio_t *obj, PinName pin) {
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| 27 | int group ;
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| 28 | obj->pin = pin;
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| 29 | if(pin == NC) return;
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| 30 |
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| 31 | obj->mask = gpio_set(pin);
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| 32 |
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| 33 | group = PINGROUP(pin);
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| 34 | if (group > 11) return;
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| 35 |
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| 36 | obj->reg_set = (volatile uint32_t *) PSR(group);
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| 37 | obj->reg_in = (volatile uint32_t *) PPR(group);
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| 38 | obj->reg_dir = (volatile uint32_t *)PMSR(group);
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| 39 | obj->reg_buf = (volatile uint32_t *)PIBC(group);
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| 40 | }
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| 41 |
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| 42 | void gpio_mode(gpio_t *obj, PinMode mode) {
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| 43 | /* Pull up and Pull down settings aren't supported because RZ/A1H doesn't have pull up/down for pins(signals). */
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| 44 | }
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| 45 |
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| 46 | void gpio_dir(gpio_t *obj, PinDirection direction) {
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| 47 | switch (direction) {
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| 48 | case PIN_INPUT :
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| 49 | *obj->reg_dir = (obj->mask << 16) | obj->mask;
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| 50 | *obj->reg_buf |= obj->mask;
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| 51 | break;
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| 52 | case PIN_OUTPUT:
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| 53 | *obj->reg_dir = (obj->mask << 16) | 0;
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| 54 | *obj->reg_buf &= ~obj->mask;
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| 55 | break;
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| 56 | }
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| 57 | }
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