lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC15XX/pinmap.c@103:9b881da47c92, 2014-02-20 (annotated)

Committer:
mbed_official
Date:
Thu Feb 20 23:00:08 2014 +0000
Revision:
103:9b881da47c92
Child:
227:7bd0639b8911
Synchronized with git revision 1f2da5f6047218c8c45334c11bdaaaeab3c18841



Full URL: https://github.com/mbedmicro/mbed/commit/1f2da5f6047218c8c45334c11bdaaaeab3c18841/



NXP master merge

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 103:9b881da47c92 1 /* mbed Microcontroller Library
mbed_official 103:9b881da47c92 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 103:9b881da47c92 3 *
mbed_official 103:9b881da47c92 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 103:9b881da47c92 5 * you may not use this file except in compliance with the License.
mbed_official 103:9b881da47c92 6 * You may obtain a copy of the License at
mbed_official 103:9b881da47c92 7 *
mbed_official 103:9b881da47c92 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 103:9b881da47c92 9 *
mbed_official 103:9b881da47c92 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 103:9b881da47c92 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 103:9b881da47c92 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 103:9b881da47c92 13 * See the License for the specific language governing permissions and
mbed_official 103:9b881da47c92 14 * limitations under the License.
mbed_official 103:9b881da47c92 15 */
mbed_official 103:9b881da47c92 16 #include "pinmap.h"
mbed_official 103:9b881da47c92 17 #include "error.h"
mbed_official 103:9b881da47c92 18
mbed_official 103:9b881da47c92 19 void pin_function(PinName pin, int function) {
mbed_official 103:9b881da47c92 20 }
mbed_official 103:9b881da47c92 21
mbed_official 103:9b881da47c92 22 void pin_mode(PinName pin, PinMode mode) {
mbed_official 103:9b881da47c92 23 if (pin == (uint32_t)NC) { return; }
mbed_official 103:9b881da47c92 24
mbed_official 103:9b881da47c92 25 if ((pin == P0_22) || (pin == P0_23)) {
mbed_official 103:9b881da47c92 26 // The true open-drain pins PIO0_22 and PIO0_23 can be configured for different I2C-bus speeds.
mbed_official 103:9b881da47c92 27 return;
mbed_official 103:9b881da47c92 28 }
mbed_official 103:9b881da47c92 29
mbed_official 103:9b881da47c92 30 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin * 4));
mbed_official 103:9b881da47c92 31
mbed_official 103:9b881da47c92 32 if (mode == OpenDrain) {
mbed_official 103:9b881da47c92 33 *reg |= (1 << 10);
mbed_official 103:9b881da47c92 34 } else {
mbed_official 103:9b881da47c92 35 uint32_t tmp = *reg;
mbed_official 103:9b881da47c92 36 tmp &= ~(0x3 << 3);
mbed_official 103:9b881da47c92 37 tmp |= (mode & 0x3) << 3;
mbed_official 103:9b881da47c92 38 *reg = tmp;
mbed_official 103:9b881da47c92 39 }
mbed_official 103:9b881da47c92 40 }