mirror of https://github.com/ARMmbed/mbed-os.git
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2006-2013 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 "pinmap.h"
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#include "error.h"
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void pinmap_pinout(PinName pin, const PinMap *map) {
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if (pin == NC) return;
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while (map->pin != NC) {
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if (map->pin == pin) {
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pin_function(pin, map->function);
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pin_mode(pin, PullNone);
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return;
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}
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map++;
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}
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error("could not pinout");
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}
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uint32_t pinmap_merge(uint32_t a, uint32_t b) {
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// both are the same (inc both NC)
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if (a == b) return a;
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// one (or both) is not connected
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if (a == (uint32_t)NC) return b;
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if (b == (uint32_t)NC) return a;
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// mis-match error case
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error("pinmap mis-match");
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return (uint32_t)NC;
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}
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uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
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if (pin == (PinName)NC)
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return (uint32_t)NC;
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while (map->pin != NC) {
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if (map->pin == pin)
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return map->peripheral;
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map++;
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}
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// no mapping available
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error("pinmap not found for peripheral");
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return (uint32_t)NC;
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}
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