0ef1717155
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60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2006-2013 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "gpio_api.h"
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#include "pinmap.h"
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#include "gpio_addrdefine.h"
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#include "mbed_drv_cfg.h"
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uint32_t gpio_set(PinName pin) {
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pin_function(pin, 0);
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return (1 << PINNO(pin));
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}
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void gpio_init(gpio_t *obj, PinName pin) {
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int group ;
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obj->pin = pin;
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if(pin == NC) return;
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obj->mask = gpio_set(pin);
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group = PINGROUP(pin);
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if (group > GPIO_GROUP_MAX) return;
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obj->reg_set = (volatile uint32_t *) PSR(group);
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obj->reg_in = (volatile uint32_t *) PPR(group);
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obj->reg_dir = (volatile uint32_t *)PMSR(group);
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obj->reg_buf = (volatile uint32_t *)PIBC(group);
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}
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void gpio_mode(gpio_t *obj, PinMode mode) {
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/* 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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}
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void gpio_dir(gpio_t *obj, PinDirection direction) {
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switch (direction) {
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case PIN_INPUT :
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*obj->reg_dir = (obj->mask << 16) | obj->mask;
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*obj->reg_buf |= obj->mask;
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break;
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case PIN_OUTPUT:
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*obj->reg_dir = (obj->mask << 16) | 0;
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*obj->reg_buf &= ~obj->mask;
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break;
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}
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}
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