mirror of https://github.com/ARMmbed/mbed-os.git
87 lines
2.0 KiB
C
87 lines
2.0 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 "gpio_api.h"
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#include "mbed_assert.h"
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#include "pinmap.h"
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#include "mbed_error.h"
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#include "PeripheralPins.h"
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uint32_t gpio_set(PinName pin)
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{
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if (pin == (PinName) NC) {
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return 0;
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}
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uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
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#if 1
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pin_function(pin, 0 << NU_MFP_POS(pin_index));
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#else
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pinmap_pinout(pin, PinMap_GPIO);
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#endif
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return (uint32_t)(1 << pin_index); // Return the pin mask
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}
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void gpio_init(gpio_t *obj, PinName pin)
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{
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obj->pin = pin;
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if (obj->pin == (PinName) NC) {
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return;
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}
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obj->mask = gpio_set(pin);
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}
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void gpio_mode(gpio_t *obj, PinMode mode)
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{
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if (obj->pin == (PinName) NC) {
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return;
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}
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pin_mode(obj->pin, mode);
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}
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void gpio_dir(gpio_t *obj, PinDirection direction)
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{
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if (obj->pin == (PinName) NC) {
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return;
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}
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uint32_t pin_index = NU_PINNAME_TO_PIN(obj->pin);
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uint32_t port_index = NU_PINNAME_TO_PORT(obj->pin);
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GPIO_T *gpio_base = NU_PORT_BASE(port_index);
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uint32_t mode_intern = GPIO_MODE_INPUT;
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switch (direction) {
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case PIN_INPUT:
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mode_intern = GPIO_MODE_INPUT;
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break;
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case PIN_OUTPUT:
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mode_intern = GPIO_MODE_OUTPUT;
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break;
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default:
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return;
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}
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GPIO_SetMode(gpio_base, 1 << pin_index, mode_intern);
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}
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