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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11XX/pinmap.c@19:398f4c622e1b, 2013-08-19 (annotated)

Committer:
bogdanm
Date:
Mon Aug 19 18:17:02 2013 +0300
Revision:
19:398f4c622e1b
Sync with official mbed library release 66

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 19:398f4c622e1b 1 /* mbed Microcontroller Library
bogdanm 19:398f4c622e1b 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 19:398f4c622e1b 3 *
bogdanm 19:398f4c622e1b 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 19:398f4c622e1b 5 * you may not use this file except in compliance with the License.
bogdanm 19:398f4c622e1b 6 * You may obtain a copy of the License at
bogdanm 19:398f4c622e1b 7 *
bogdanm 19:398f4c622e1b 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 19:398f4c622e1b 9 *
bogdanm 19:398f4c622e1b 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 19:398f4c622e1b 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 19:398f4c622e1b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 19:398f4c622e1b 13 * See the License for the specific language governing permissions and
bogdanm 19:398f4c622e1b 14 * limitations under the License.
bogdanm 19:398f4c622e1b 15 */
bogdanm 19:398f4c622e1b 16 #include "pinmap.h"
bogdanm 19:398f4c622e1b 17 #include "error.h"
bogdanm 19:398f4c622e1b 18
bogdanm 19:398f4c622e1b 19 void pin_function(PinName pin, int function) {
bogdanm 19:398f4c622e1b 20 if (pin == (uint32_t)NC) return;
bogdanm 19:398f4c622e1b 21
bogdanm 19:398f4c622e1b 22 uint32_t offset = (uint32_t)pin & 0xff;
bogdanm 19:398f4c622e1b 23 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + offset);
bogdanm 19:398f4c622e1b 24
bogdanm 19:398f4c622e1b 25 // pin function bits: [2:0] -> 111 = (0x7)
bogdanm 19:398f4c622e1b 26 *reg = (*reg & ~0x7) | (function & 0x7);
bogdanm 19:398f4c622e1b 27 }
bogdanm 19:398f4c622e1b 28
bogdanm 19:398f4c622e1b 29 void pin_mode(PinName pin, PinMode mode) {
bogdanm 19:398f4c622e1b 30 if (pin == (uint32_t)NC) { return; }
bogdanm 19:398f4c622e1b 31
bogdanm 19:398f4c622e1b 32 uint32_t offset = (uint32_t)pin & 0xff;
bogdanm 19:398f4c622e1b 33 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
bogdanm 19:398f4c622e1b 34
bogdanm 19:398f4c622e1b 35 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + offset);
bogdanm 19:398f4c622e1b 36 uint32_t tmp = *reg;
bogdanm 19:398f4c622e1b 37
bogdanm 19:398f4c622e1b 38 // pin mode bits: [4:3] -> 11000 = (0x3 << 3)
bogdanm 19:398f4c622e1b 39 tmp &= ~(0x3 << 3);
bogdanm 19:398f4c622e1b 40 tmp |= (mode & 0x3) << 3;
bogdanm 19:398f4c622e1b 41
bogdanm 19:398f4c622e1b 42 // drain
bogdanm 19:398f4c622e1b 43 tmp &= ~(0x1 << 10);
bogdanm 19:398f4c622e1b 44 tmp |= drain << 10;
bogdanm 19:398f4c622e1b 45
bogdanm 19:398f4c622e1b 46 *reg = tmp;
bogdanm 19:398f4c622e1b 47 }