59 lines
1.9 KiB
C
59 lines
1.9 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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/*
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Notes for Teacup:
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Copied from $(MBED)/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/pinmap.c.
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Used only to get things running quickly. Without serial it's almost
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impossible to see wether code changes work. Should go away soon, because
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all this MBED stuff is too bloated for Teacup's purposes.
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- Prefixed names of #include files with mbed- to match the names of the
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copies in the Teacup repo.
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- Wrapped the whole file in #ifdef __ARMEL__ to not cause conflicts with
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AVR builds.
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*/
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#ifdef __ARMEL__
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#include "mbed-pinmap.h"
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void pin_function(PinName pin, int function) {
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uint32_t offset = (uint32_t)pin & 0xff;
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__IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + offset);
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// pin function bits: [2:0] -> 111 = (0x7)
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*reg = (*reg & ~0x7) | (function & 0x7);
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}
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void pin_mode(PinName pin, PinMode mode) {
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uint32_t offset = (uint32_t)pin & 0xff;
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uint32_t drain = ((uint32_t)mode & (uint32_t)OpenDrain) >> 2;
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__IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + offset);
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uint32_t tmp = *reg;
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// pin mode bits: [4:3] -> 11000 = (0x3 << 3)
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tmp &= ~(0x3 << 3);
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tmp |= (mode & 0x3) << 3;
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// drain
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tmp &= ~(0x1 << 10);
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tmp |= drain << 10;
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*reg = tmp;
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}
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#endif /* __ARMEL__ */
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