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targets/hal/TARGET_NXP/TARGET_LPC176X/pinmap.c@199:aeeefa19f7de, 2014-05-19 (annotated)

Committer:
mbed_official
Date:
Mon May 19 18:30:07 2014 +0100
Revision:
199:aeeefa19f7de
Parent:
19:398f4c622e1b
Child:
227:7bd0639b8911
Synchronized with git revision e686ab92240f88ab3e42f7421cea75c56a49e1a6



Full URL: https://github.com/mbedmicro/mbed/commit/e686ab92240f88ab3e42f7421cea75c56a49e1a6/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
emilmont 10:3bc89ef62ce7 16 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 17 #include "error.h"
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 void pin_function(PinName pin, int function) {
bogdanm 19:398f4c622e1b 20 if (pin == (PinName)NC) return;
emilmont 10:3bc89ef62ce7 21
emilmont 10:3bc89ef62ce7 22 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
emilmont 10:3bc89ef62ce7 23 int index = pin_number >> 4;
emilmont 10:3bc89ef62ce7 24 int offset = (pin_number & 0xF) << 1;
emilmont 10:3bc89ef62ce7 25
emilmont 10:3bc89ef62ce7 26 PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
emilmont 10:3bc89ef62ce7 27 PINCONARRAY->PINSEL[index] |= function << offset;
emilmont 10:3bc89ef62ce7 28 }
emilmont 10:3bc89ef62ce7 29
emilmont 10:3bc89ef62ce7 30 void pin_mode(PinName pin, PinMode mode) {
bogdanm 19:398f4c622e1b 31 if (pin == (PinName)NC) { return; }
emilmont 10:3bc89ef62ce7 32
emilmont 10:3bc89ef62ce7 33 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
emilmont 10:3bc89ef62ce7 34 int index = pin_number >> 5;
emilmont 10:3bc89ef62ce7 35 int offset = pin_number & 0x1F;
emilmont 10:3bc89ef62ce7 36 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
emilmont 10:3bc89ef62ce7 37
emilmont 10:3bc89ef62ce7 38 PINCONARRAY->PINMODE_OD[index] &= ~(drain << offset);
emilmont 10:3bc89ef62ce7 39 PINCONARRAY->PINMODE_OD[index] |= drain << offset;
emilmont 10:3bc89ef62ce7 40
emilmont 10:3bc89ef62ce7 41 if (!drain) {
emilmont 10:3bc89ef62ce7 42 index = pin_number >> 4;
emilmont 10:3bc89ef62ce7 43 offset = (pin_number & 0xF) << 1;
emilmont 10:3bc89ef62ce7 44
emilmont 10:3bc89ef62ce7 45 PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
emilmont 10:3bc89ef62ce7 46 PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
emilmont 10:3bc89ef62ce7 47 }
emilmont 10:3bc89ef62ce7 48 }