Umar Naeem / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by Umar Naeem

targets/hal/TARGET_NXP/TARGET_LPC176X/pinmap.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 17 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 18 #include "mbed_error.h"
bogdanm 0:9b334a45a8ff 19
bogdanm 0:9b334a45a8ff 20 void pin_function(PinName pin, int function) {
bogdanm 0:9b334a45a8ff 21 MBED_ASSERT(pin != (PinName)NC);
bogdanm 0:9b334a45a8ff 22
bogdanm 0:9b334a45a8ff 23 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
bogdanm 0:9b334a45a8ff 24 int index = pin_number >> 4;
bogdanm 0:9b334a45a8ff 25 int offset = (pin_number & 0xF) << 1;
bogdanm 0:9b334a45a8ff 26
bogdanm 0:9b334a45a8ff 27 PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
bogdanm 0:9b334a45a8ff 28 PINCONARRAY->PINSEL[index] |= function << offset;
bogdanm 0:9b334a45a8ff 29 }
bogdanm 0:9b334a45a8ff 30
bogdanm 0:9b334a45a8ff 31 void pin_mode(PinName pin, PinMode mode) {
bogdanm 0:9b334a45a8ff 32 MBED_ASSERT(pin != (PinName)NC);
bogdanm 0:9b334a45a8ff 33
bogdanm 0:9b334a45a8ff 34 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
bogdanm 0:9b334a45a8ff 35 int index = pin_number >> 5;
bogdanm 0:9b334a45a8ff 36 int offset = pin_number & 0x1F;
bogdanm 0:9b334a45a8ff 37 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
bogdanm 0:9b334a45a8ff 38
bogdanm 0:9b334a45a8ff 39 PINCONARRAY->PINMODE_OD[index] &= ~(drain << offset);
bogdanm 0:9b334a45a8ff 40 PINCONARRAY->PINMODE_OD[index] |= drain << offset;
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 if (!drain) {
bogdanm 0:9b334a45a8ff 43 index = pin_number >> 4;
bogdanm 0:9b334a45a8ff 44 offset = (pin_number & 0xF) << 1;
bogdanm 0:9b334a45a8ff 45
bogdanm 0:9b334a45a8ff 46 PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
bogdanm 0:9b334a45a8ff 47 PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
bogdanm 0:9b334a45a8ff 48 }
bogdanm 0:9b334a45a8ff 49 }