Ermanno Brusadin / mbed-src

mbed library sources

targets/hal/TARGET_NXP/TARGET_LPC176X/pinmap.c@0:0a673c671a56, 2016-07-27 (annotated)

Committer:
ebrus
Date:
Wed Jul 27 18:35:32 2016 +0000
Revision:
0:0a673c671a56
4

Who changed what in which revision?

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ebrus 0:0a673c671a56 1 /* mbed Microcontroller Library
ebrus 0:0a673c671a56 2 * Copyright (c) 2006-2013 ARM Limited
ebrus 0:0a673c671a56 3 *
ebrus 0:0a673c671a56 4 * Licensed under the Apache License, Version 2.0 (the "License");
ebrus 0:0a673c671a56 5 * you may not use this file except in compliance with the License.
ebrus 0:0a673c671a56 6 * You may obtain a copy of the License at
ebrus 0:0a673c671a56 7 *
ebrus 0:0a673c671a56 8 * http://www.apache.org/licenses/LICENSE-2.0
ebrus 0:0a673c671a56 9 *
ebrus 0:0a673c671a56 10 * Unless required by applicable law or agreed to in writing, software
ebrus 0:0a673c671a56 11 * distributed under the License is distributed on an "AS IS" BASIS,
ebrus 0:0a673c671a56 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ebrus 0:0a673c671a56 13 * See the License for the specific language governing permissions and
ebrus 0:0a673c671a56 14 * limitations under the License.
ebrus 0:0a673c671a56 15 */
ebrus 0:0a673c671a56 16 #include "mbed_assert.h"
ebrus 0:0a673c671a56 17 #include "pinmap.h"
ebrus 0:0a673c671a56 18 #include "mbed_error.h"
ebrus 0:0a673c671a56 19
ebrus 0:0a673c671a56 20 void pin_function(PinName pin, int function) {
ebrus 0:0a673c671a56 21 MBED_ASSERT(pin != (PinName)NC);
ebrus 0:0a673c671a56 22
ebrus 0:0a673c671a56 23 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
ebrus 0:0a673c671a56 24 int index = pin_number >> 4;
ebrus 0:0a673c671a56 25 int offset = (pin_number & 0xF) << 1;
ebrus 0:0a673c671a56 26
ebrus 0:0a673c671a56 27 PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
ebrus 0:0a673c671a56 28 PINCONARRAY->PINSEL[index] |= function << offset;
ebrus 0:0a673c671a56 29 }
ebrus 0:0a673c671a56 30
ebrus 0:0a673c671a56 31 void pin_mode(PinName pin, PinMode mode) {
ebrus 0:0a673c671a56 32 MBED_ASSERT(pin != (PinName)NC);
ebrus 0:0a673c671a56 33
ebrus 0:0a673c671a56 34 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
ebrus 0:0a673c671a56 35 int index = pin_number >> 5;
ebrus 0:0a673c671a56 36 int offset = pin_number & 0x1F;
ebrus 0:0a673c671a56 37 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
ebrus 0:0a673c671a56 38
ebrus 0:0a673c671a56 39 PINCONARRAY->PINMODE_OD[index] &= ~(drain << offset);
ebrus 0:0a673c671a56 40 PINCONARRAY->PINMODE_OD[index] |= drain << offset;
ebrus 0:0a673c671a56 41
ebrus 0:0a673c671a56 42 if (!drain) {
ebrus 0:0a673c671a56 43 index = pin_number >> 4;
ebrus 0:0a673c671a56 44 offset = (pin_number & 0xF) << 1;
ebrus 0:0a673c671a56 45
ebrus 0:0a673c671a56 46 PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
ebrus 0:0a673c671a56 47 PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
ebrus 0:0a673c671a56 48 }
ebrus 0:0a673c671a56 49 }