mirror of https://github.com/ARMmbed/mbed-os.git
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2015-2016 Nuvoton
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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 "port_api.h"
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#include "gpio_api.h"
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#include "pinmap.h"
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#include "mbed_error.h"
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#if DEVICE_PORTIN || DEVICE_PORTOUT || DEVICE_PORTINOUT
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PinName port_pin(PortName port, int pin_n)
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{
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return (PinName) NU_PORT_N_PIN_TO_PINNAME(port, pin_n);
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}
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void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
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{
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obj->port = port;
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obj->mask = mask;
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obj->direction = dir;
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uint32_t i;
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obj->direction = dir;
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for (i = 0; i < GPIO_PIN_MAX; i++) {
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if (obj->mask & (1 << i)) {
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gpio_set(port_pin(port, i));
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}
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}
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port_dir(obj, dir);
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}
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void port_dir(port_t *obj, PinDirection dir)
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{
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uint32_t i;
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obj->direction = dir;
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for (i = 0; i < GPIO_PIN_MAX; i++) {
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if (obj->mask & (1 << i)) {
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if (dir == PIN_OUTPUT) {
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GPIO_SetMode(NU_PORT_BASE(obj->port), 1 << i, GPIO_MODE_OUTPUT);
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} else { // PIN_INPUT
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GPIO_SetMode(NU_PORT_BASE(obj->port), 1 << i, GPIO_MODE_INPUT);
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}
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}
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}
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}
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void port_mode(port_t *obj, PinMode mode)
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{
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uint32_t i;
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for (i = 0; i < GPIO_PIN_MAX; i++) {
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if (obj->mask & (1 << i)) {
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pin_mode(port_pin(obj->port, i), mode);
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}
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}
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}
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void port_write(port_t *obj, int value)
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{
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uint32_t i;
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uint32_t port_index = obj->port;
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for (i = 0; i < GPIO_PIN_MAX; i++) {
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if (obj->mask & (1 << i)) {
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GPIO_PIN_ADDR(port_index, i) = (value & obj->mask) ? 1 : 0;
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}
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}
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}
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int port_read(port_t *obj)
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{
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uint32_t i;
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uint32_t port_index = obj->port;
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int value = 0;
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for (i = 0; i < GPIO_PIN_MAX; i++) {
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if (obj->mask & (1 << i)) {
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value = value | (GPIO_PIN_ADDR(port_index, i) << i);
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}
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}
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return value;
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}
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#endif
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