0ef1717155
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82 lines
2.1 KiB
C
82 lines
2.1 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 "mbed_assert.h"
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#include "gpio_api.h"
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#include "pinmap.h"
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#include "fsl_port.h"
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#include "fsl_gpio.h"
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static GPIO_Type * const gpio_addrs[] = GPIO_BASE_PTRS;
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uint32_t gpio_set(PinName pin)
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{
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MBED_ASSERT(pin != (PinName)NC);
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uint32_t pin_num = pin & 0xFF;
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pin_function(pin, (int)kPORT_MuxAsGpio);
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return 1 << pin_num;
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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 (pin == (PinName)NC)
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return;
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pin_function(pin, (int)kPORT_MuxAsGpio);
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}
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void gpio_mode(gpio_t *obj, PinMode mode)
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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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MBED_ASSERT(obj->pin != (PinName)NC);
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uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
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uint32_t pin_num = obj->pin & 0xFF;
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GPIO_Type *base = gpio_addrs[port];
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switch (direction) {
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case PIN_INPUT:
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base->PDDR &= ~(1U << pin_num);
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break;
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case PIN_OUTPUT:
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base->PDDR |= (1U << pin_num);
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break;
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}
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}
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void gpio_write(gpio_t *obj, int value)
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{
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MBED_ASSERT(obj->pin != (PinName)NC);
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uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
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uint32_t pin = obj->pin & 0xFF;
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GPIO_WritePinOutput(gpio_addrs[port], pin, value);
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}
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int gpio_read(gpio_t *obj)
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{
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MBED_ASSERT(obj->pin != (PinName)NC);
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uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
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uint32_t pin = obj->pin & 0xFF;
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return (int)GPIO_ReadPinInput(gpio_addrs[port], pin);
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}
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