mirror of https://github.com/ARMmbed/mbed-os.git
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2006-2018 ARM Limited
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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 "pinmap.h"
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#include "mbed_error.h"
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#include "objects.h"
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void pin_function(PinName pin, int function)
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{
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struct arm_gpio_dev_t *gpio_dev;
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uint32_t flags;
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MBED_ASSERT(pin != NC);
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/* The pin has to be a GPIO pin */
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if (pin >= EXP0 && pin <= EXP51) {
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switch (function) {
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case ALTERNATE_FUNC:
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flags = ARM_GPIO_PIN_DISABLE;
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break;
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case GPIO_FUNC:
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flags = ARM_GPIO_PIN_ENABLE;
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break;
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default:
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return;
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}
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switch (GPIO_DEV_NUMBER(pin)) {
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#ifdef ARM_GPIO0
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case GPIO0_NUMBER:
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gpio_dev = &ARM_GPIO0_DEV;
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break;
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#endif /* ARM_GPIO0 */
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#ifdef ARM_GPIO1
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case GPIO1_NUMBER:
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gpio_dev = &ARM_GPIO1_DEV;
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break;
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#endif /* ARM_GPIO1 */
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#ifdef ARM_GPIO2
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case GPIO2_NUMBER:
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gpio_dev = &ARM_GPIO2_DEV;
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break;
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#endif /* ARM_GPIO2 */
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#ifdef ARM_GPIO3
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case GPIO3_NUMBER:
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gpio_dev = &ARM_GPIO3_DEV;
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break;
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#endif /* ARM_GPIO3 */
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default:
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error("GPIO %d, associated with expansion pin %d, is disabled",
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pin, GPIO_DEV_NUMBER(pin));
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return;
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}
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arm_gpio_init(gpio_dev);
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(void)arm_gpio_config(gpio_dev, ARM_GPIO_ACCESS_PIN,
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GPIO_PIN_NUMBER(pin), flags);
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}
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}
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void pin_mode(PinName pin, PinMode mode)
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{
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MBED_ASSERT(pin != NC);
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/* PinMode is not supported */
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}
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