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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "gpio_api.h"
#include "pinmap.h"
#include "gpio_addrdefine.h"
uint32_t gpio_set(PinName pin) {
pin_function(pin, 0);
return (1 << PINNO(pin));
}
void gpio_init(gpio_t *obj, PinName pin) {
int group ;
obj->pin = pin;
if(pin == NC) return;
obj->mask = gpio_set(pin);
group = PINGROUP(pin);
if (group > 11) return;
obj->reg_set = (volatile uint32_t *) PSR(group);
obj->reg_in = (volatile uint32_t *) PPR(group);
obj->reg_dir = (volatile uint32_t *)PMSR(group);
obj->reg_buf = (volatile uint32_t *)PIBC(group);
}
void gpio_mode(gpio_t *obj, PinMode mode) {
/* Pull up and Pull down settings aren't supported because RZ/A1H doesn't have pull up/down for pins(signals). */
}
void gpio_dir(gpio_t *obj, PinDirection direction) {
switch (direction) {
case PIN_INPUT :
*obj->reg_dir = (obj->mask << 16) | obj->mask;
*obj->reg_buf |= obj->mask;
break;
case PIN_OUTPUT:
*obj->reg_dir = (obj->mask << 16) | 0;
*obj->reg_buf &= ~obj->mask;
break;
}
}
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