mirror of https://github.com/ARMmbed/mbed-os.git
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2006-2015 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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void pin_function(PinName pin, int function) {
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MBED_ASSERT(pin != (PinName)NC);
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uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
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int index = pin_number >> 4;
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int offset = (pin_number & 0xF) << 1;
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PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
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PINCONARRAY->PINSEL[index] |= function << offset;
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}
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void pin_mode(PinName pin, PinMode mode) {
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MBED_ASSERT((pin != (PinName)NC) && (mode != OpenDrain));
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uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
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int index = pin_number >> 5;
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int offset = pin_number & 0x1F;
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uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
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if (!drain) {
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index = pin_number >> 4;
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offset = (pin_number & 0xF) << 1;
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PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
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PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
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}
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}
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