0ef1717155
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63 lines
1.9 KiB
C
63 lines
1.9 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 "pinmap.h"
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#include "mbed_error.h"
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#include "fsl_common.h"
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void pin_function(PinName pin, int function)
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{
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MBED_ASSERT(pin != (PinName)NC);
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clock_ip_name_t gpio_clocks[] = GPIO_CLOCKS;
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uint32_t pin_number = pin & 0x1F;
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uint8_t port_number = pin / 32;
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uint32_t reg;
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CLOCK_EnableClock(gpio_clocks[port_number]);
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CLOCK_EnableClock(kCLOCK_Iocon);
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/* Set the DIGIMODE bit */
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IOCON->PIO[port_number][pin_number] |= IOCON_PIO_DIGIMODE_MASK;
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reg = IOCON->PIO[port_number][pin_number];
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reg = (reg & ~IOCON_PIO_FUNC_MASK) | (function & IOCON_PIO_FUNC_MASK);
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IOCON->PIO[port_number][pin_number] = reg;
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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 != (PinName)NC);
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uint32_t pin_number = pin & 0x1F;
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uint8_t port_number = pin / 32;
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uint32_t reg = IOCON->PIO[port_number][pin_number] & ~IOCON_PIO_MODE_MASK;
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switch (mode) {
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case PullNone:
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break;
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case PullDown:
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reg |= (1 << IOCON_PIO_MODE_SHIFT);
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break;
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case PullUp:
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reg |= (2 << IOCON_PIO_MODE_SHIFT);
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break;
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default:
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break;
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}
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IOCON->PIO[port_number][pin_number] = reg;
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}
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