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Diff: hal/mbed_pinmap_common.c
- Revision:
- 149:156823d33999
diff -r 21d94c44109e -r 156823d33999 hal/mbed_pinmap_common.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hal/mbed_pinmap_common.c Fri Oct 28 11:17:30 2016 +0100 @@ -0,0 +1,89 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "hal/pinmap.h" +#include "platform/mbed_error.h" + +void pinmap_pinout(PinName pin, const PinMap *map) { + if (pin == NC) + return; + + while (map->pin != NC) { + if (map->pin == pin) { + pin_function(pin, map->function); + + pin_mode(pin, PullNone); + return; + } + map++; + } + error("could not pinout"); +} + +uint32_t pinmap_merge(uint32_t a, uint32_t b) { + // both are the same (inc both NC) + if (a == b) + return a; + + // one (or both) is not connected + if (a == (uint32_t)NC) + return b; + if (b == (uint32_t)NC) + return a; + + // mis-match error case + error("pinmap mis-match"); + return (uint32_t)NC; +} + +uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) { + while (map->pin != NC) { + if (map->pin == pin) + return map->peripheral; + map++; + } + return (uint32_t)NC; +} + +uint32_t pinmap_peripheral(PinName pin, const PinMap* map) { + uint32_t peripheral = (uint32_t)NC; + + if (pin == (PinName)NC) + return (uint32_t)NC; + peripheral = pinmap_find_peripheral(pin, map); + if ((uint32_t)NC == peripheral) // no mapping available + error("pinmap not found for peripheral"); + return peripheral; +} + +uint32_t pinmap_find_function(PinName pin, const PinMap* map) { + while (map->pin != NC) { + if (map->pin == pin) + return map->function; + map++; + } + return (uint32_t)NC; +} + +uint32_t pinmap_function(PinName pin, const PinMap* map) { + uint32_t function = (uint32_t)NC; + + if (pin == (PinName)NC) + return (uint32_t)NC; + function = pinmap_find_function(pin, map); + if ((uint32_t)NC == function) // no mapping available + error("pinmap not found for function"); + return function; +}