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 | #include "mbed_drv_cfg.h"
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20 |
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21 |
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22 | uint32_t gpio_set(PinName pin) {
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23 | pin_function(pin, 0);
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24 | return (1 << PINNO(pin));
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25 | }
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26 |
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27 | void gpio_init(gpio_t *obj, PinName pin) {
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28 | int group ;
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29 | obj->pin = pin;
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30 | if(pin == NC) return;
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31 |
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32 | obj->mask = gpio_set(pin);
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33 |
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34 | group = PINGROUP(pin);
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35 | if (group > GPIO_GROUP_MAX) return;
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36 |
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37 | obj->reg_set = (volatile uint32_t *) PSR(group);
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38 | obj->reg_in = (volatile uint32_t *) PPR(group);
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39 | obj->reg_dir = (volatile uint32_t *)PMSR(group);
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40 | obj->reg_buf = (volatile uint32_t *)PIBC(group);
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41 | }
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42 |
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43 | void gpio_mode(gpio_t *obj, PinMode mode) {
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44 | /* 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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45 | }
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46 |
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47 | void gpio_dir(gpio_t *obj, PinDirection direction) {
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48 | switch (direction) {
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49 | case PIN_INPUT :
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50 | *obj->reg_dir = (obj->mask << 16) | obj->mask;
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51 | *obj->reg_buf |= obj->mask;
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52 | break;
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53 | case PIN_OUTPUT:
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54 | *obj->reg_dir = (obj->mask << 16) | 0;
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55 | *obj->reg_buf &= ~obj->mask;
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56 | break;
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57 | }
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58 | }
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