lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC23XX/pinmap.c@227:7bd0639b8911, 2014-06-11 (annotated)

Committer:
mbed_official
Date:
Wed Jun 11 16:00:09 2014 +0100
Revision:
227:7bd0639b8911
Parent:
23:8d50de55f208
Child:
250:a49055e7a707
Synchronized with git revision d58d532ebc0e0a96f4fffb8edefc082b71b964af



Full URL: https://github.com/mbedmicro/mbed/commit/d58d532ebc0e0a96f4fffb8edefc082b71b964af/

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 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
emilmont 10:3bc89ef62ce7 17 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 18 #include "error.h"
emilmont 10:3bc89ef62ce7 19
emilmont 10:3bc89ef62ce7 20 void pin_function(PinName pin, int function) {
mbed_official 227:7bd0639b8911 21 MBED_ASSERT(pin != (PinName)NC);
emilmont 10:3bc89ef62ce7 22
emilmont 10:3bc89ef62ce7 23 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
emilmont 10:3bc89ef62ce7 24 int index = pin_number >> 4;
emilmont 10:3bc89ef62ce7 25 int offset = (pin_number & 0xF) << 1;
emilmont 10:3bc89ef62ce7 26
emilmont 10:3bc89ef62ce7 27 PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
emilmont 10:3bc89ef62ce7 28 PINCONARRAY->PINSEL[index] |= function << offset;
emilmont 10:3bc89ef62ce7 29 }
emilmont 10:3bc89ef62ce7 30
emilmont 10:3bc89ef62ce7 31 void pin_mode(PinName pin, PinMode mode) {
mbed_official 227:7bd0639b8911 32 MBED_ASSERT((pin != (PinName)NC) && (mode != OpenDrain));
mbed_official 227:7bd0639b8911 33
emilmont 10:3bc89ef62ce7 34 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
emilmont 10:3bc89ef62ce7 35 int index = pin_number >> 5;
emilmont 10:3bc89ef62ce7 36 int offset = pin_number & 0x1F;
emilmont 10:3bc89ef62ce7 37 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
mbed_official 227:7bd0639b8911 38
emilmont 10:3bc89ef62ce7 39 if (!drain) {
emilmont 10:3bc89ef62ce7 40 index = pin_number >> 4;
emilmont 10:3bc89ef62ce7 41 offset = (pin_number & 0xF) << 1;
emilmont 10:3bc89ef62ce7 42
emilmont 10:3bc89ef62ce7 43 PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
emilmont 10:3bc89ef62ce7 44 PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
emilmont 10:3bc89ef62ce7 45 }
emilmont 10:3bc89ef62ce7 46 }